diff options
Diffstat (limited to 'libvpx/vp9/encoder/vp9_firstpass.c')
-rw-r--r-- | libvpx/vp9/encoder/vp9_firstpass.c | 2173 |
1 files changed, 871 insertions, 1302 deletions
diff --git a/libvpx/vp9/encoder/vp9_firstpass.c b/libvpx/vp9/encoder/vp9_firstpass.c index 974c300..acb5a09 100644 --- a/libvpx/vp9/encoder/vp9_firstpass.c +++ b/libvpx/vp9/encoder/vp9_firstpass.c @@ -8,32 +8,34 @@ * be found in the AUTHORS file in the root of the source tree. */ -#include <math.h> #include <limits.h> +#include <math.h> #include <stdio.h> -#include "vp9/encoder/vp9_block.h" -#include "vp9/encoder/vp9_onyx_int.h" -#include "vp9/encoder/vp9_variance.h" -#include "vp9/encoder/vp9_encodeintra.h" -#include "vp9/encoder/vp9_mcomp.h" -#include "vp9/encoder/vp9_firstpass.h" + +#include "./vpx_scale_rtcd.h" + +#include "vpx_mem/vpx_mem.h" #include "vpx_scale/vpx_scale.h" +#include "vpx_scale/yv12config.h" + +#include "vp9/common/vp9_entropymv.h" +#include "vp9/common/vp9_quant_common.h" +#include "vp9/common/vp9_reconinter.h" // vp9_setup_dst_planes() +#include "vp9/common/vp9_systemdependent.h" + +#include "vp9/encoder/vp9_block.h" #include "vp9/encoder/vp9_encodeframe.h" #include "vp9/encoder/vp9_encodemb.h" -#include "vp9/common/vp9_extend.h" -#include "vp9/common/vp9_systemdependent.h" -#include "vpx_mem/vpx_mem.h" -#include "vpx_scale/yv12config.h" +#include "vp9/encoder/vp9_encodemv.h" +#include "vp9/encoder/vp9_extend.h" +#include "vp9/encoder/vp9_firstpass.h" +#include "vp9/encoder/vp9_mcomp.h" +#include "vp9/encoder/vp9_onyx_int.h" #include "vp9/encoder/vp9_quantize.h" -#include "vp9/encoder/vp9_rdopt.h" #include "vp9/encoder/vp9_ratectrl.h" -#include "vp9/common/vp9_quant_common.h" -#include "vp9/common/vp9_entropymv.h" -#include "vp9/encoder/vp9_encodemv.h" +#include "vp9/encoder/vp9_rdopt.h" #include "vp9/encoder/vp9_vaq.h" -#include "./vpx_scale_rtcd.h" -// TODO(jkoleszar): for setup_dst_planes -#include "vp9/common/vp9_reconinter.h" +#include "vp9/encoder/vp9_variance.h" #define OUTPUT_FPF 0 @@ -50,8 +52,9 @@ #define DOUBLE_DIVIDE_CHECK(x) ((x) < 0 ? (x) - 0.000001 : (x) + 0.000001) -#define POW1 (double)cpi->oxcf.two_pass_vbrbias/100.0 -#define POW2 (double)cpi->oxcf.two_pass_vbrbias/100.0 +#define MIN_KF_BOOST 300 + +#define DISABLE_RC_LONG_TERM_MEM 0 static void swap_yv12(YV12_BUFFER_CONFIG *a, YV12_BUFFER_CONFIG *b) { YV12_BUFFER_CONFIG temp = *a; @@ -59,15 +62,13 @@ static void swap_yv12(YV12_BUFFER_CONFIG *a, YV12_BUFFER_CONFIG *b) { *b = temp; } -static void find_next_key_frame(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame); - static int select_cq_level(int qindex) { int ret_val = QINDEX_RANGE - 1; int i; double target_q = (vp9_convert_qindex_to_q(qindex) * 0.5847) + 1.0; - for (i = 0; i < QINDEX_RANGE; i++) { + for (i = 0; i < QINDEX_RANGE; ++i) { if (target_q <= vp9_convert_qindex_to_q(i)) { ret_val = i; break; @@ -77,33 +78,48 @@ static int select_cq_level(int qindex) { return ret_val; } +static int gfboost_qadjust(int qindex) { + const double q = vp9_convert_qindex_to_q(qindex); + return (int)((0.00000828 * q * q * q) + + (-0.0055 * q * q) + + (1.32 * q) + 79.3); +} + +static int kfboost_qadjust(int qindex) { + const double q = vp9_convert_qindex_to_q(qindex); + return (int)((0.00000973 * q * q * q) + + (-0.00613 * q * q) + + (1.316 * q) + 121.2); +} // Resets the first pass file to the given position using a relative seek from // the current position. -static void reset_fpf_position(VP9_COMP *cpi, FIRSTPASS_STATS *position) { - cpi->twopass.stats_in = position; +static void reset_fpf_position(struct twopass_rc *p, + const FIRSTPASS_STATS *position) { + p->stats_in = position; } -static int lookup_next_frame_stats(VP9_COMP *cpi, FIRSTPASS_STATS *next_frame) { - if (cpi->twopass.stats_in >= cpi->twopass.stats_in_end) +static int lookup_next_frame_stats(const struct twopass_rc *p, + FIRSTPASS_STATS *next_frame) { + if (p->stats_in >= p->stats_in_end) return EOF; - *next_frame = *cpi->twopass.stats_in; + *next_frame = *p->stats_in; return 1; } -// Read frame stats at an offset from the current position -static int read_frame_stats(VP9_COMP *cpi, - FIRSTPASS_STATS *frame_stats, - int offset) { - FIRSTPASS_STATS *fps_ptr = cpi->twopass.stats_in; - // Check legality of offset +// Read frame stats at an offset from the current position. +static int read_frame_stats(const struct twopass_rc *p, + FIRSTPASS_STATS *frame_stats, int offset) { + const FIRSTPASS_STATS *fps_ptr = p->stats_in; + + // Check legality of offset. if (offset >= 0) { - if (&fps_ptr[offset] >= cpi->twopass.stats_in_end) + if (&fps_ptr[offset] >= p->stats_in_end) return EOF; } else if (offset < 0) { - if (&fps_ptr[offset] < cpi->twopass.stats_in_start) + if (&fps_ptr[offset] < p->stats_in_start) return EOF; } @@ -111,19 +127,17 @@ static int read_frame_stats(VP9_COMP *cpi, return 1; } -static int input_stats(VP9_COMP *cpi, FIRSTPASS_STATS *fps) { - if (cpi->twopass.stats_in >= cpi->twopass.stats_in_end) +static int input_stats(struct twopass_rc *p, FIRSTPASS_STATS *fps) { + if (p->stats_in >= p->stats_in_end) return EOF; - *fps = *cpi->twopass.stats_in; - cpi->twopass.stats_in = - (void *)((char *)cpi->twopass.stats_in + sizeof(FIRSTPASS_STATS)); + *fps = *p->stats_in; + ++p->stats_in; return 1; } -static void output_stats(const VP9_COMP *cpi, - struct vpx_codec_pkt_list *pktlist, - FIRSTPASS_STATS *stats) { +static void output_stats(FIRSTPASS_STATS *stats, + struct vpx_codec_pkt_list *pktlist) { struct vpx_codec_cx_pkt pkt; pkt.kind = VPX_CODEC_STATS_PKT; pkt.data.twopass_stats.buf = stats; @@ -132,12 +146,11 @@ static void output_stats(const VP9_COMP *cpi, // TEMP debug code #if OUTPUT_FPF - { FILE *fpfile; fpfile = fopen("firstpass.stt", "a"); - fprintf(stdout, "%12.0f %12.0f %12.0f %12.0f %12.0f %12.4f %12.4f" + fprintf(fpfile, "%12.0f %12.0f %12.0f %12.0f %12.0f %12.4f %12.4f" "%12.4f %12.4f %12.4f %12.4f %12.4f %12.4f %12.4f" "%12.0f %12.0f %12.4f %12.0f %12.0f %12.4f\n", stats->frame, @@ -254,13 +267,17 @@ static void avg_stats(FIRSTPASS_STATS *section) { // Calculate a modified Error used in distributing bits between easier and // harder frames. -static double calculate_modified_err(VP9_COMP *cpi, - FIRSTPASS_STATS *this_frame) { - const FIRSTPASS_STATS *const stats = &cpi->twopass.total_stats; +static double calculate_modified_err(const VP9_COMP *cpi, + const FIRSTPASS_STATS *this_frame) { + const struct twopass_rc *const twopass = &cpi->twopass; + const FIRSTPASS_STATS *const stats = &twopass->total_stats; const double av_err = stats->ssim_weighted_pred_err / stats->count; - const double this_err = this_frame->ssim_weighted_pred_err; - return av_err * pow(this_err / DOUBLE_DIVIDE_CHECK(av_err), - this_err > av_err ? POW1 : POW2); + double modified_error = av_err * pow(this_frame->ssim_weighted_pred_err / + DOUBLE_DIVIDE_CHECK(av_err), + cpi->oxcf.two_pass_vbrbias / 100.0); + + return fclamp(modified_error, + twopass->modified_error_min, twopass->modified_error_max); } static const double weight_table[256] = { @@ -303,43 +320,35 @@ static const double weight_table[256] = { 1.000000, 1.000000, 1.000000, 1.000000 }; -static double simple_weight(YV12_BUFFER_CONFIG *source) { +static double simple_weight(const YV12_BUFFER_CONFIG *buf) { int i, j; + double sum = 0.0; + const int w = buf->y_crop_width; + const int h = buf->y_crop_height; + const uint8_t *row = buf->y_buffer; + + for (i = 0; i < h; ++i) { + const uint8_t *pixel = row; + for (j = 0; j < w; ++j) + sum += weight_table[*pixel++]; + row += buf->y_stride; + } - uint8_t *src = source->y_buffer; - double sum_weights = 0.0; - - // Loop through the Y plane examining levels and creating a weight for - // the image. - i = source->y_height; - do { - j = source->y_width; - do { - sum_weights += weight_table[ *src]; - src++; - } while (--j); - src -= source->y_width; - src += source->y_stride; - } while (--i); - - sum_weights /= (source->y_height * source->y_width); - - return sum_weights; + return MAX(0.1, sum / (w * h)); } +// This function returns the maximum target rate per frame. +static int frame_max_bits(const VP9_COMP *cpi) { + int64_t max_bits = + ((int64_t)cpi->rc.av_per_frame_bandwidth * + (int64_t)cpi->oxcf.two_pass_vbrmax_section) / 100; -// This function returns the current per frame maximum bitrate target. -static int frame_max_bits(VP9_COMP *cpi) { - // Max allocation for a single frame based on the max section guidelines - // passed in and how many bits are left. - // For VBR base this on the bits and frames left plus the - // two_pass_vbrmax_section rate passed in by the user. - const double max_bits = (1.0 * cpi->twopass.bits_left / - (cpi->twopass.total_stats.count - cpi->common.current_video_frame)) * - (cpi->oxcf.two_pass_vbrmax_section / 100.0); + if (max_bits < 0) + max_bits = 0; + else if (max_bits > cpi->rc.max_frame_bandwidth) + max_bits = cpi->rc.max_frame_bandwidth; - // Trap case where we are out of bits. - return MAX((int)max_bits, 0); + return (int)max_bits; } void vp9_init_first_pass(VP9_COMP *cpi) { @@ -347,135 +356,115 @@ void vp9_init_first_pass(VP9_COMP *cpi) { } void vp9_end_first_pass(VP9_COMP *cpi) { - output_stats(cpi, cpi->output_pkt_list, &cpi->twopass.total_stats); + output_stats(&cpi->twopass.total_stats, cpi->output_pkt_list); } -static void zz_motion_search(VP9_COMP *cpi, MACROBLOCK *x, - YV12_BUFFER_CONFIG *recon_buffer, - int *best_motion_err, int recon_yoffset) { - MACROBLOCKD *const xd = &x->e_mbd; - - // Set up pointers for this macro block recon buffer - xd->plane[0].pre[0].buf = recon_buffer->y_buffer + recon_yoffset; - - switch (xd->mi_8x8[0]->mbmi.sb_type) { +static vp9_variance_fn_t get_block_variance_fn(BLOCK_SIZE bsize) { + switch (bsize) { case BLOCK_8X8: - vp9_mse8x8(x->plane[0].src.buf, x->plane[0].src.stride, - xd->plane[0].pre[0].buf, xd->plane[0].pre[0].stride, - (unsigned int *)(best_motion_err)); - break; + return vp9_mse8x8; case BLOCK_16X8: - vp9_mse16x8(x->plane[0].src.buf, x->plane[0].src.stride, - xd->plane[0].pre[0].buf, xd->plane[0].pre[0].stride, - (unsigned int *)(best_motion_err)); - break; + return vp9_mse16x8; case BLOCK_8X16: - vp9_mse8x16(x->plane[0].src.buf, x->plane[0].src.stride, - xd->plane[0].pre[0].buf, xd->plane[0].pre[0].stride, - (unsigned int *)(best_motion_err)); - break; + return vp9_mse8x16; default: - vp9_mse16x16(x->plane[0].src.buf, x->plane[0].src.stride, - xd->plane[0].pre[0].buf, xd->plane[0].pre[0].stride, - (unsigned int *)(best_motion_err)); - break; + return vp9_mse16x16; } } +static unsigned int zz_motion_search(const MACROBLOCK *x) { + const MACROBLOCKD *const xd = &x->e_mbd; + const uint8_t *const src = x->plane[0].src.buf; + const int src_stride = x->plane[0].src.stride; + const uint8_t *const ref = xd->plane[0].pre[0].buf; + const int ref_stride = xd->plane[0].pre[0].stride; + unsigned int sse; + vp9_variance_fn_t fn = get_block_variance_fn(xd->mi_8x8[0]->mbmi.sb_type); + fn(src, src_stride, ref, ref_stride, &sse); + return sse; +} + static void first_pass_motion_search(VP9_COMP *cpi, MACROBLOCK *x, - int_mv *ref_mv, MV *best_mv, - YV12_BUFFER_CONFIG *recon_buffer, - int *best_motion_err, int recon_yoffset) { + const MV *ref_mv, MV *best_mv, + int *best_motion_err) { MACROBLOCKD *const xd = &x->e_mbd; - int num00; - - int_mv tmp_mv; - int_mv ref_mv_full; - - int tmp_err; + MV tmp_mv = {0, 0}; + MV ref_mv_full = {ref_mv->row >> 3, ref_mv->col >> 3}; + int num00, tmp_err, n, sr = 0; int step_param = 3; int further_steps = (MAX_MVSEARCH_STEPS - 1) - step_param; - int n; - vp9_variance_fn_ptr_t v_fn_ptr = - cpi->fn_ptr[xd->mi_8x8[0]->mbmi.sb_type]; + const BLOCK_SIZE bsize = xd->mi_8x8[0]->mbmi.sb_type; + vp9_variance_fn_ptr_t v_fn_ptr = cpi->fn_ptr[bsize]; int new_mv_mode_penalty = 256; + const int quart_frm = MIN(cpi->common.width, cpi->common.height); - int sr = 0; - int quart_frm = MIN(cpi->common.width, cpi->common.height); - - // refine the motion search range accroding to the frame dimension - // for first pass test + // Refine the motion search range according to the frame dimension + // for first pass test. while ((quart_frm << sr) < MAX_FULL_PEL_VAL) - sr++; - if (sr) - sr--; + ++sr; - step_param += sr; + step_param += sr; further_steps -= sr; - // override the default variance function to use MSE - switch (xd->mi_8x8[0]->mbmi.sb_type) { - case BLOCK_8X8: - v_fn_ptr.vf = vp9_mse8x8; - break; - case BLOCK_16X8: - v_fn_ptr.vf = vp9_mse16x8; - break; - case BLOCK_8X16: - v_fn_ptr.vf = vp9_mse8x16; - break; - default: - v_fn_ptr.vf = vp9_mse16x16; - break; - } + // Override the default variance function to use MSE. + v_fn_ptr.vf = get_block_variance_fn(bsize); - // Set up pointers for this macro block recon buffer - xd->plane[0].pre[0].buf = recon_buffer->y_buffer + recon_yoffset; - - // Initial step/diamond search centred on best mv - tmp_mv.as_int = 0; - ref_mv_full.as_mv.col = ref_mv->as_mv.col >> 3; - ref_mv_full.as_mv.row = ref_mv->as_mv.row >> 3; - tmp_err = cpi->diamond_search_sad(x, &ref_mv_full, &tmp_mv, step_param, + // Center the initial step/diamond search on best mv. + tmp_err = cpi->diamond_search_sad(x, &ref_mv_full, &tmp_mv, + step_param, x->sadperbit16, &num00, &v_fn_ptr, x->nmvjointcost, x->mvcost, ref_mv); + if (tmp_err < INT_MAX) + tmp_err = vp9_get_mvpred_var(x, &tmp_mv, ref_mv, &v_fn_ptr, 1); if (tmp_err < INT_MAX - new_mv_mode_penalty) tmp_err += new_mv_mode_penalty; if (tmp_err < *best_motion_err) { *best_motion_err = tmp_err; - best_mv->row = tmp_mv.as_mv.row; - best_mv->col = tmp_mv.as_mv.col; + best_mv->row = tmp_mv.row; + best_mv->col = tmp_mv.col; } - // Further step/diamond searches as necessary + // Carry out further step/diamond searches as necessary. n = num00; num00 = 0; while (n < further_steps) { - n++; + ++n; if (num00) { - num00--; + --num00; } else { tmp_err = cpi->diamond_search_sad(x, &ref_mv_full, &tmp_mv, step_param + n, x->sadperbit16, &num00, &v_fn_ptr, x->nmvjointcost, x->mvcost, ref_mv); + if (tmp_err < INT_MAX) + tmp_err = vp9_get_mvpred_var(x, &tmp_mv, ref_mv, &v_fn_ptr, 1); if (tmp_err < INT_MAX - new_mv_mode_penalty) tmp_err += new_mv_mode_penalty; if (tmp_err < *best_motion_err) { *best_motion_err = tmp_err; - best_mv->row = tmp_mv.as_mv.row; - best_mv->col = tmp_mv.as_mv.col; + best_mv->row = tmp_mv.row; + best_mv->col = tmp_mv.col; } } } } +static BLOCK_SIZE get_bsize(const VP9_COMMON *cm, int mb_row, int mb_col) { + if (2 * mb_col + 1 < cm->mi_cols) { + return 2 * mb_row + 1 < cm->mi_rows ? BLOCK_16X16 + : BLOCK_16X8; + } else { + return 2 * mb_row + 1 < cm->mi_rows ? BLOCK_8X16 + : BLOCK_8X8; + } +} + void vp9_first_pass(VP9_COMP *cpi) { int mb_row, mb_col; MACROBLOCK *const x = &cpi->mb; @@ -484,24 +473,23 @@ void vp9_first_pass(VP9_COMP *cpi) { TileInfo tile; struct macroblock_plane *const p = x->plane; struct macroblockd_plane *const pd = xd->plane; - PICK_MODE_CONTEXT *ctx = &x->sb64_context; + const PICK_MODE_CONTEXT *ctx = &x->sb64_context; int i; int recon_yoffset, recon_uvoffset; - const int lst_yv12_idx = cm->ref_frame_map[cpi->lst_fb_idx]; - const int gld_yv12_idx = cm->ref_frame_map[cpi->gld_fb_idx]; - YV12_BUFFER_CONFIG *const lst_yv12 = &cm->yv12_fb[lst_yv12_idx]; - YV12_BUFFER_CONFIG *const gld_yv12 = &cm->yv12_fb[gld_yv12_idx]; + YV12_BUFFER_CONFIG *const lst_yv12 = get_ref_frame_buffer(cpi, LAST_FRAME); + YV12_BUFFER_CONFIG *const gld_yv12 = get_ref_frame_buffer(cpi, GOLDEN_FRAME); YV12_BUFFER_CONFIG *const new_yv12 = get_frame_new_buffer(cm); const int recon_y_stride = lst_yv12->y_stride; const int recon_uv_stride = lst_yv12->uv_stride; + const int uv_mb_height = 16 >> (lst_yv12->y_height > lst_yv12->uv_height); int64_t intra_error = 0; int64_t coded_error = 0; int64_t sr_coded_error = 0; int sum_mvr = 0, sum_mvc = 0; int sum_mvr_abs = 0, sum_mvc_abs = 0; - int sum_mvrs = 0, sum_mvcs = 0; + int64_t sum_mvrs = 0, sum_mvcs = 0; int mvcount = 0; int intercount = 0; int second_ref_count = 0; @@ -510,112 +498,85 @@ void vp9_first_pass(VP9_COMP *cpi) { int new_mv_count = 0; int sum_in_vectors = 0; uint32_t lastmv_as_int = 0; + struct twopass_rc *const twopass = &cpi->twopass; + const MV zero_mv = {0, 0}; - int_mv zero_ref_mv; - - zero_ref_mv.as_int = 0; - - vp9_clear_system_state(); // __asm emms; + vp9_clear_system_state(); vp9_setup_src_planes(x, cpi->Source, 0, 0); - setup_pre_planes(xd, 0, lst_yv12, 0, 0, NULL); - setup_dst_planes(xd, new_yv12, 0, 0); + vp9_setup_pre_planes(xd, 0, lst_yv12, 0, 0, NULL); + vp9_setup_dst_planes(xd, new_yv12, 0, 0); xd->mi_8x8 = cm->mi_grid_visible; - // required for vp9_frame_init_quantizer xd->mi_8x8[0] = cm->mi; - setup_block_dptrs(&x->e_mbd, cm->subsampling_x, cm->subsampling_y); + vp9_setup_block_planes(&x->e_mbd, cm->subsampling_x, cm->subsampling_y); vp9_frame_init_quantizer(cpi); for (i = 0; i < MAX_MB_PLANE; ++i) { p[i].coeff = ctx->coeff_pbuf[i][1]; - pd[i].qcoeff = ctx->qcoeff_pbuf[i][1]; + p[i].qcoeff = ctx->qcoeff_pbuf[i][1]; pd[i].dqcoeff = ctx->dqcoeff_pbuf[i][1]; - pd[i].eobs = ctx->eobs_pbuf[i][1]; + p[i].eobs = ctx->eobs_pbuf[i][1]; } x->skip_recode = 0; + vp9_init_mv_probs(cm); + vp9_initialize_rd_consts(cpi); - // Initialise the MV cost table to the defaults - // if( cm->current_video_frame == 0) - // if ( 0 ) - { - vp9_init_mv_probs(cm); - vp9_initialize_rd_consts(cpi); - } - - // tiling is ignored in the first pass + // Tiling is ignored in the first pass. vp9_tile_init(&tile, cm, 0, 0); - // for each macroblock row in image - for (mb_row = 0; mb_row < cm->mb_rows; mb_row++) { + for (mb_row = 0; mb_row < cm->mb_rows; ++mb_row) { int_mv best_ref_mv; best_ref_mv.as_int = 0; - // reset above block coeffs + // Reset above block coeffs. xd->up_available = (mb_row != 0); recon_yoffset = (mb_row * recon_y_stride * 16); - recon_uvoffset = (mb_row * recon_uv_stride * 8); + recon_uvoffset = (mb_row * recon_uv_stride * uv_mb_height); // Set up limit values for motion vectors to prevent them extending - // outside the UMV borders + // outside the UMV borders. x->mv_row_min = -((mb_row * 16) + BORDER_MV_PIXELS_B16); x->mv_row_max = ((cm->mb_rows - 1 - mb_row) * 16) + BORDER_MV_PIXELS_B16; - // for each macroblock col in image - for (mb_col = 0; mb_col < cm->mb_cols; mb_col++) { + for (mb_col = 0; mb_col < cm->mb_cols; ++mb_col) { int this_error; - int gf_motion_error = INT_MAX; - int use_dc_pred = (mb_col || mb_row) && (!mb_col || !mb_row); - double error_weight; + const int use_dc_pred = (mb_col || mb_row) && (!mb_col || !mb_row); + double error_weight = 1.0; + const BLOCK_SIZE bsize = get_bsize(cm, mb_row, mb_col); - vp9_clear_system_state(); // __asm emms; - error_weight = 1.0; // avoid uninitialized warnings + vp9_clear_system_state(); xd->plane[0].dst.buf = new_yv12->y_buffer + recon_yoffset; xd->plane[1].dst.buf = new_yv12->u_buffer + recon_uvoffset; xd->plane[2].dst.buf = new_yv12->v_buffer + recon_uvoffset; xd->left_available = (mb_col != 0); - - if (mb_col * 2 + 1 < cm->mi_cols) { - if (mb_row * 2 + 1 < cm->mi_rows) { - xd->mi_8x8[0]->mbmi.sb_type = BLOCK_16X16; - } else { - xd->mi_8x8[0]->mbmi.sb_type = BLOCK_16X8; - } - } else { - if (mb_row * 2 + 1 < cm->mi_rows) { - xd->mi_8x8[0]->mbmi.sb_type = BLOCK_8X16; - } else { - xd->mi_8x8[0]->mbmi.sb_type = BLOCK_8X8; - } - } + xd->mi_8x8[0]->mbmi.sb_type = bsize; xd->mi_8x8[0]->mbmi.ref_frame[0] = INTRA_FRAME; set_mi_row_col(xd, &tile, - mb_row << 1, - num_8x8_blocks_high_lookup[xd->mi_8x8[0]->mbmi.sb_type], - mb_col << 1, - num_8x8_blocks_wide_lookup[xd->mi_8x8[0]->mbmi.sb_type], + mb_row << 1, num_8x8_blocks_high_lookup[bsize], + mb_col << 1, num_8x8_blocks_wide_lookup[bsize], cm->mi_rows, cm->mi_cols); - if (cpi->sf.variance_adaptive_quantization) { - int energy = vp9_block_energy(cpi, x, xd->mi_8x8[0]->mbmi.sb_type); + if (cpi->oxcf.aq_mode == VARIANCE_AQ) { + const int energy = vp9_block_energy(cpi, x, bsize); error_weight = vp9_vaq_inv_q_ratio(energy); } - // do intra 16x16 prediction + // Do intra 16x16 prediction. this_error = vp9_encode_intra(x, use_dc_pred); - if (cpi->sf.variance_adaptive_quantization) { - vp9_clear_system_state(); // __asm emms; - this_error *= error_weight; + if (cpi->oxcf.aq_mode == VARIANCE_AQ) { + vp9_clear_system_state(); + this_error = (int)(this_error * error_weight); } - // intrapenalty below deals with situations where the intra and inter - // error scores are very low (eg a plain black frame). + // Intrapenalty below deals with situations where the intra and inter + // error scores are very low (e.g. a plain black frame). // We do not have special cases in first pass for 0,0 and nearest etc so // all inter modes carry an overhead cost estimate for the mv. // When the error score is very low this causes us to pick all or lots of @@ -623,44 +584,42 @@ void vp9_first_pass(VP9_COMP *cpi) { // This penalty adds a cost matching that of a 0,0 mv to the intra case. this_error += intrapenalty; - // Cumulative intra error total + // Accumulate the intra error. intra_error += (int64_t)this_error; // Set up limit values for motion vectors to prevent them extending // outside the UMV borders. x->mv_col_min = -((mb_col * 16) + BORDER_MV_PIXELS_B16); - x->mv_col_max = ((cm->mb_cols - 1 - mb_col) * 16) - + BORDER_MV_PIXELS_B16; + x->mv_col_max = ((cm->mb_cols - 1 - mb_col) * 16) + BORDER_MV_PIXELS_B16; - // Other than for the first frame do a motion search + // Other than for the first frame do a motion search. if (cm->current_video_frame > 0) { - int tmp_err; - int motion_error = INT_MAX; + int tmp_err, motion_error; int_mv mv, tmp_mv; - // Simple 0,0 motion with no mv overhead - zz_motion_search(cpi, x, lst_yv12, &motion_error, recon_yoffset); + xd->plane[0].pre[0].buf = lst_yv12->y_buffer + recon_yoffset; + motion_error = zz_motion_search(x); + // Assume 0,0 motion with no mv overhead. mv.as_int = tmp_mv.as_int = 0; // Test last reference frame using the previous best mv as the - // starting point (best reference) for the search - first_pass_motion_search(cpi, x, &best_ref_mv, - &mv.as_mv, lst_yv12, - &motion_error, recon_yoffset); - if (cpi->sf.variance_adaptive_quantization) { - vp9_clear_system_state(); // __asm emms; - motion_error *= error_weight; + // starting point (best reference) for the search. + first_pass_motion_search(cpi, x, &best_ref_mv.as_mv, &mv.as_mv, + &motion_error); + if (cpi->oxcf.aq_mode == VARIANCE_AQ) { + vp9_clear_system_state(); + motion_error = (int)(motion_error * error_weight); } // If the current best reference mv is not centered on 0,0 then do a 0,0 // based search as well. if (best_ref_mv.as_int) { tmp_err = INT_MAX; - first_pass_motion_search(cpi, x, &zero_ref_mv, &tmp_mv.as_mv, - lst_yv12, &tmp_err, recon_yoffset); - if (cpi->sf.variance_adaptive_quantization) { - vp9_clear_system_state(); // __asm emms; - tmp_err *= error_weight; + first_pass_motion_search(cpi, x, &zero_mv, &tmp_mv.as_mv, + &tmp_err); + if (cpi->oxcf.aq_mode == VARIANCE_AQ) { + vp9_clear_system_state(); + tmp_err = (int)(tmp_err * error_weight); } if (tmp_err < motion_error) { @@ -669,34 +628,33 @@ void vp9_first_pass(VP9_COMP *cpi) { } } - // Experimental search in an older reference frame + // Search in an older reference frame. if (cm->current_video_frame > 1) { - // Simple 0,0 motion with no mv overhead - zz_motion_search(cpi, x, gld_yv12, - &gf_motion_error, recon_yoffset); - - first_pass_motion_search(cpi, x, &zero_ref_mv, - &tmp_mv.as_mv, gld_yv12, - &gf_motion_error, recon_yoffset); - if (cpi->sf.variance_adaptive_quantization) { - vp9_clear_system_state(); // __asm emms; - gf_motion_error *= error_weight; - } + // Assume 0,0 motion with no mv overhead. + int gf_motion_error; + + xd->plane[0].pre[0].buf = gld_yv12->y_buffer + recon_yoffset; + gf_motion_error = zz_motion_search(x); - if ((gf_motion_error < motion_error) && - (gf_motion_error < this_error)) { - second_ref_count++; + first_pass_motion_search(cpi, x, &zero_mv, &tmp_mv.as_mv, + &gf_motion_error); + if (cpi->oxcf.aq_mode == VARIANCE_AQ) { + vp9_clear_system_state(); + gf_motion_error = (int)(gf_motion_error * error_weight); } - // Reset to last frame as reference buffer + if (gf_motion_error < motion_error && gf_motion_error < this_error) + ++second_ref_count; + + // Reset to last frame as reference buffer. xd->plane[0].pre[0].buf = lst_yv12->y_buffer + recon_yoffset; xd->plane[1].pre[0].buf = lst_yv12->u_buffer + recon_uvoffset; xd->plane[2].pre[0].buf = lst_yv12->v_buffer + recon_uvoffset; - // In accumulating a score for the older reference frame - // take the best of the motion predicted score and - // the intra coded error (just as will be done for) - // accumulation of "coded_error" for the last frame. + // In accumulating a score for the older reference frame take the + // best of the motion predicted score and the intra coded error + // (just as will be done for) accumulation of "coded_error" for + // the last frame. if (gf_motion_error < this_error) sr_coded_error += gf_motion_error; else @@ -704,74 +662,69 @@ void vp9_first_pass(VP9_COMP *cpi) { } else { sr_coded_error += motion_error; } - /* Intra assumed best */ + // Start by assuming that intra mode is best. best_ref_mv.as_int = 0; if (motion_error <= this_error) { - // Keep a count of cases where the inter and intra were - // very close and very low. This helps with scene cut - // detection for example in cropped clips with black bars - // at the sides or top and bottom. - if ((((this_error - intrapenalty) * 9) <= - (motion_error * 10)) && - (this_error < (2 * intrapenalty))) { - neutral_count++; - } + // Keep a count of cases where the inter and intra were very close + // and very low. This helps with scene cut detection for example in + // cropped clips with black bars at the sides or top and bottom. + if (((this_error - intrapenalty) * 9 <= motion_error * 10) && + this_error < 2 * intrapenalty) + ++neutral_count; mv.as_mv.row *= 8; mv.as_mv.col *= 8; this_error = motion_error; - vp9_set_mbmode_and_mvs(x, NEWMV, &mv); + xd->mi_8x8[0]->mbmi.mode = NEWMV; + xd->mi_8x8[0]->mbmi.mv[0] = mv; xd->mi_8x8[0]->mbmi.tx_size = TX_4X4; xd->mi_8x8[0]->mbmi.ref_frame[0] = LAST_FRAME; xd->mi_8x8[0]->mbmi.ref_frame[1] = NONE; - vp9_build_inter_predictors_sby(xd, mb_row << 1, - mb_col << 1, - xd->mi_8x8[0]->mbmi.sb_type); - vp9_encode_sby(x, xd->mi_8x8[0]->mbmi.sb_type); + vp9_build_inter_predictors_sby(xd, mb_row << 1, mb_col << 1, bsize); + vp9_encode_sby_pass1(x, bsize); sum_mvr += mv.as_mv.row; sum_mvr_abs += abs(mv.as_mv.row); sum_mvc += mv.as_mv.col; sum_mvc_abs += abs(mv.as_mv.col); sum_mvrs += mv.as_mv.row * mv.as_mv.row; sum_mvcs += mv.as_mv.col * mv.as_mv.col; - intercount++; + ++intercount; best_ref_mv.as_int = mv.as_int; - // Was the vector non-zero if (mv.as_int) { - mvcount++; + ++mvcount; - // Was it different from the last non zero vector + // Non-zero vector, was it different from the last non zero vector? if (mv.as_int != lastmv_as_int) - new_mv_count++; + ++new_mv_count; lastmv_as_int = mv.as_int; - // Does the Row vector point inwards or outwards + // Does the row vector point inwards or outwards? if (mb_row < cm->mb_rows / 2) { if (mv.as_mv.row > 0) - sum_in_vectors--; + --sum_in_vectors; else if (mv.as_mv.row < 0) - sum_in_vectors++; + ++sum_in_vectors; } else if (mb_row > cm->mb_rows / 2) { if (mv.as_mv.row > 0) - sum_in_vectors++; + ++sum_in_vectors; else if (mv.as_mv.row < 0) - sum_in_vectors--; + --sum_in_vectors; } - // Does the Row vector point inwards or outwards + // Does the col vector point inwards or outwards? if (mb_col < cm->mb_cols / 2) { if (mv.as_mv.col > 0) - sum_in_vectors--; + --sum_in_vectors; else if (mv.as_mv.col < 0) - sum_in_vectors++; + ++sum_in_vectors; } else if (mb_col > cm->mb_cols / 2) { if (mv.as_mv.col > 0) - sum_in_vectors++; + ++sum_in_vectors; else if (mv.as_mv.col < 0) - sum_in_vectors--; + --sum_in_vectors; } } } @@ -780,108 +733,95 @@ void vp9_first_pass(VP9_COMP *cpi) { } coded_error += (int64_t)this_error; - // adjust to the next column of macroblocks + // Adjust to the next column of MBs. x->plane[0].src.buf += 16; - x->plane[1].src.buf += 8; - x->plane[2].src.buf += 8; + x->plane[1].src.buf += uv_mb_height; + x->plane[2].src.buf += uv_mb_height; recon_yoffset += 16; - recon_uvoffset += 8; + recon_uvoffset += uv_mb_height; } - // adjust to the next row of mbs + // Adjust to the next row of MBs. x->plane[0].src.buf += 16 * x->plane[0].src.stride - 16 * cm->mb_cols; - x->plane[1].src.buf += 8 * x->plane[1].src.stride - 8 * cm->mb_cols; - x->plane[2].src.buf += 8 * x->plane[1].src.stride - 8 * cm->mb_cols; + x->plane[1].src.buf += uv_mb_height * x->plane[1].src.stride - + uv_mb_height * cm->mb_cols; + x->plane[2].src.buf += uv_mb_height * x->plane[1].src.stride - + uv_mb_height * cm->mb_cols; - vp9_clear_system_state(); // __asm emms; + vp9_clear_system_state(); } - vp9_clear_system_state(); // __asm emms; + vp9_clear_system_state(); { - double weight = 0.0; - FIRSTPASS_STATS fps; - fps.frame = cm->current_video_frame; + fps.frame = cm->current_video_frame; fps.intra_error = (double)(intra_error >> 8); fps.coded_error = (double)(coded_error >> 8); fps.sr_coded_error = (double)(sr_coded_error >> 8); - weight = simple_weight(cpi->Source); - - - if (weight < 0.1) - weight = 0.1; - - fps.ssim_weighted_pred_err = fps.coded_error * weight; - - fps.pcnt_inter = 0.0; - fps.pcnt_motion = 0.0; - fps.MVr = 0.0; - fps.mvr_abs = 0.0; - fps.MVc = 0.0; - fps.mvc_abs = 0.0; - fps.MVrv = 0.0; - fps.MVcv = 0.0; - fps.mv_in_out_count = 0.0; - fps.new_mv_count = 0.0; - fps.count = 1.0; - - fps.pcnt_inter = 1.0 * (double)intercount / cm->MBs; - fps.pcnt_second_ref = 1.0 * (double)second_ref_count / cm->MBs; - fps.pcnt_neutral = 1.0 * (double)neutral_count / cm->MBs; + fps.ssim_weighted_pred_err = fps.coded_error * simple_weight(cpi->Source); + fps.count = 1.0; + fps.pcnt_inter = (double)intercount / cm->MBs; + fps.pcnt_second_ref = (double)second_ref_count / cm->MBs; + fps.pcnt_neutral = (double)neutral_count / cm->MBs; if (mvcount > 0) { - fps.MVr = (double)sum_mvr / (double)mvcount; - fps.mvr_abs = (double)sum_mvr_abs / (double)mvcount; - fps.MVc = (double)sum_mvc / (double)mvcount; - fps.mvc_abs = (double)sum_mvc_abs / (double)mvcount; - fps.MVrv = ((double)sum_mvrs - (fps.MVr * fps.MVr / (double)mvcount)) / - (double)mvcount; - fps.MVcv = ((double)sum_mvcs - (fps.MVc * fps.MVc / (double)mvcount)) / - (double)mvcount; - fps.mv_in_out_count = (double)sum_in_vectors / (double)(mvcount * 2); + fps.MVr = (double)sum_mvr / mvcount; + fps.mvr_abs = (double)sum_mvr_abs / mvcount; + fps.MVc = (double)sum_mvc / mvcount; + fps.mvc_abs = (double)sum_mvc_abs / mvcount; + fps.MVrv = ((double)sum_mvrs - (fps.MVr * fps.MVr / mvcount)) / mvcount; + fps.MVcv = ((double)sum_mvcs - (fps.MVc * fps.MVc / mvcount)) / mvcount; + fps.mv_in_out_count = (double)sum_in_vectors / (mvcount * 2); fps.new_mv_count = new_mv_count; - - fps.pcnt_motion = 1.0 * (double)mvcount / cpi->common.MBs; + fps.pcnt_motion = (double)mvcount / cm->MBs; + } else { + fps.MVr = 0.0; + fps.mvr_abs = 0.0; + fps.MVc = 0.0; + fps.mvc_abs = 0.0; + fps.MVrv = 0.0; + fps.MVcv = 0.0; + fps.mv_in_out_count = 0.0; + fps.new_mv_count = 0.0; + fps.pcnt_motion = 0.0; } // TODO(paulwilkins): Handle the case when duration is set to 0, or // something less than the full time between subsequent values of // cpi->source_time_stamp. - fps.duration = (double)(cpi->source->ts_end - - cpi->source->ts_start); + fps.duration = (double)(cpi->source->ts_end - cpi->source->ts_start); - // don't want to do output stats with a stack variable! - cpi->twopass.this_frame_stats = fps; - output_stats(cpi, cpi->output_pkt_list, &cpi->twopass.this_frame_stats); - accumulate_stats(&cpi->twopass.total_stats, &fps); + // Don't want to do output stats with a stack variable! + twopass->this_frame_stats = fps; + output_stats(&twopass->this_frame_stats, cpi->output_pkt_list); + accumulate_stats(&twopass->total_stats, &fps); } // Copy the previous Last Frame back into gf and and arf buffers if - // the prediction is good enough... but also dont allow it to lag too far - if ((cpi->twopass.sr_update_lag > 3) || + // the prediction is good enough... but also don't allow it to lag too far. + if ((twopass->sr_update_lag > 3) || ((cm->current_video_frame > 0) && - (cpi->twopass.this_frame_stats.pcnt_inter > 0.20) && - ((cpi->twopass.this_frame_stats.intra_error / - DOUBLE_DIVIDE_CHECK(cpi->twopass.this_frame_stats.coded_error)) > - 2.0))) { + (twopass->this_frame_stats.pcnt_inter > 0.20) && + ((twopass->this_frame_stats.intra_error / + DOUBLE_DIVIDE_CHECK(twopass->this_frame_stats.coded_error)) > 2.0))) { vp8_yv12_copy_frame(lst_yv12, gld_yv12); - cpi->twopass.sr_update_lag = 1; + twopass->sr_update_lag = 1; } else { - cpi->twopass.sr_update_lag++; + ++twopass->sr_update_lag; } - // swap frame pointers so last frame refers to the frame we just compressed + // Swap frame pointers so last frame refers to the frame we just compressed. swap_yv12(lst_yv12, new_yv12); - vp9_extend_frame_borders(lst_yv12, cm->subsampling_x, cm->subsampling_y); + vp9_extend_frame_borders(lst_yv12); // Special case for the first frame. Copy into the GF buffer as a second // reference. if (cm->current_video_frame == 0) vp8_yv12_copy_frame(lst_yv12, gld_yv12); - // use this to see what the first pass reconstruction looks like + // Use this to see what the first pass reconstruction looks like. if (0) { char filename[512]; FILE *recon_file; @@ -897,54 +837,15 @@ void vp9_first_pass(VP9_COMP *cpi) { fclose(recon_file); } - cm->current_video_frame++; + ++cm->current_video_frame; } -// Estimate a cost per mb attributable to overheads such as the coding of -// modes and motion vectors. -// Currently simplistic in its assumptions for testing. -// - - +// Estimate a cost per mb attributable to overheads such as the coding of modes +// and motion vectors. This currently makes simplistic assumptions for testing. static double bitcost(double prob) { return -(log(prob) / log(2.0)); } -static int64_t estimate_modemvcost(VP9_COMP *cpi, - FIRSTPASS_STATS *fpstats) { -#if 0 - int mv_cost; - int mode_cost; - - double av_pct_inter = fpstats->pcnt_inter / fpstats->count; - double av_pct_motion = fpstats->pcnt_motion / fpstats->count; - double av_intra = (1.0 - av_pct_inter); - - double zz_cost; - double motion_cost; - double intra_cost; - - zz_cost = bitcost(av_pct_inter - av_pct_motion); - motion_cost = bitcost(av_pct_motion); - intra_cost = bitcost(av_intra); - - // Estimate of extra bits per mv overhead for mbs - // << 9 is the normalization to the (bits * 512) used in vp9_bits_per_mb - mv_cost = ((int)(fpstats->new_mv_count / fpstats->count) * 8) << 9; - - // Crude estimate of overhead cost from modes - // << 9 is the normalization to (bits * 512) used in vp9_bits_per_mb - mode_cost = - (int)((((av_pct_inter - av_pct_motion) * zz_cost) + - (av_pct_motion * motion_cost) + - (av_intra * intra_cost)) * cpi->common.MBs) << 9; - - // return mv_cost + mode_cost; - // TODO(paulwilkins): Fix overhead costs for extended Q range. -#endif - return 0; -} - static double calc_correction_factor(double err_per_mb, double err_divisor, double pt_low, @@ -953,206 +854,47 @@ static double calc_correction_factor(double err_per_mb, const double error_term = err_per_mb / err_divisor; // Adjustment based on actual quantizer to power term. - const double power_term = MIN(vp9_convert_qindex_to_q(q) * 0.01 + pt_low, + const double power_term = MIN(vp9_convert_qindex_to_q(q) * 0.0125 + pt_low, pt_high); - // Calculate correction factor + // Calculate correction factor. if (power_term < 1.0) assert(error_term >= 0.0); return fclamp(pow(error_term, power_term), 0.05, 5.0); } -// Given a current maxQ value sets a range for future values. -// PGW TODO.. -// This code removes direct dependency on QIndex to determine the range -// (now uses the actual quantizer) but has not been tuned. -static void adjust_maxq_qrange(VP9_COMP *cpi) { - int i; - // Set the max corresponding to cpi->avg_q * 2.0 - double q = cpi->avg_q * 2.0; - cpi->twopass.maxq_max_limit = cpi->worst_quality; - for (i = cpi->best_quality; i <= cpi->worst_quality; i++) { - cpi->twopass.maxq_max_limit = i; - if (vp9_convert_qindex_to_q(i) >= q) - break; - } - - // Set the min corresponding to cpi->avg_q * 0.5 - q = cpi->avg_q * 0.5; - cpi->twopass.maxq_min_limit = cpi->best_quality; - for (i = cpi->worst_quality; i >= cpi->best_quality; i--) { - cpi->twopass.maxq_min_limit = i; - if (vp9_convert_qindex_to_q(i) <= q) - break; - } -} - -static int estimate_max_q(VP9_COMP *cpi, - FIRSTPASS_STATS *fpstats, - int section_target_bandwitdh) { +int vp9_twopass_worst_quality(VP9_COMP *cpi, FIRSTPASS_STATS *fpstats, + int section_target_bandwitdh) { int q; - int num_mbs = cpi->common.MBs; + const int num_mbs = cpi->common.MBs; int target_norm_bits_per_mb; + const RATE_CONTROL *const rc = &cpi->rc; - double section_err = fpstats->coded_error / fpstats->count; - double sr_correction; - double err_per_mb = section_err / num_mbs; - double err_correction_factor; - double speed_correction = 1.0; + const double section_err = fpstats->coded_error / fpstats->count; + const double err_per_mb = section_err / num_mbs; if (section_target_bandwitdh <= 0) - return cpi->twopass.maxq_max_limit; // Highest value allowed + return rc->worst_quality; // Highest value allowed target_norm_bits_per_mb = section_target_bandwitdh < (1 << 20) ? (512 * section_target_bandwitdh) / num_mbs : 512 * (section_target_bandwitdh / num_mbs); - // Look at the drop in prediction quality between the last frame - // and the GF buffer (which contained an older frame). - if (fpstats->sr_coded_error > fpstats->coded_error) { - double sr_err_diff = (fpstats->sr_coded_error - fpstats->coded_error) / - (fpstats->count * cpi->common.MBs); - sr_correction = fclamp(pow(sr_err_diff / 32.0, 0.25), 0.75, 1.25); - } else { - sr_correction = 0.75; - } - - // Calculate a corrective factor based on a rolling ratio of bits spent - // vs target bits - if (cpi->rolling_target_bits > 0 && - cpi->active_worst_quality < cpi->worst_quality) { - double rolling_ratio = (double)cpi->rolling_actual_bits / - (double)cpi->rolling_target_bits; - - if (rolling_ratio < 0.95) - cpi->twopass.est_max_qcorrection_factor -= 0.005; - else if (rolling_ratio > 1.05) - cpi->twopass.est_max_qcorrection_factor += 0.005; - - cpi->twopass.est_max_qcorrection_factor = fclamp( - cpi->twopass.est_max_qcorrection_factor, 0.1, 10.0); - } - - // Corrections for higher compression speed settings - // (reduced compression expected) - // FIXME(jimbankoski): Once we settle on vp9 speed features we need to - // change this code. - if (cpi->compressor_speed == 1) - speed_correction = cpi->oxcf.cpu_used <= 5 ? - 1.04 + (/*cpi->oxcf.cpu_used*/0 * 0.04) : - 1.25; - // Try and pick a max Q that will be high enough to encode the // content at the given rate. - for (q = cpi->twopass.maxq_min_limit; q < cpi->twopass.maxq_max_limit; q++) { - int bits_per_mb_at_this_q; - - err_correction_factor = calc_correction_factor(err_per_mb, - ERR_DIVISOR, 0.4, 0.90, q) * - sr_correction * speed_correction * - cpi->twopass.est_max_qcorrection_factor; - - bits_per_mb_at_this_q = vp9_bits_per_mb(INTER_FRAME, q, - err_correction_factor); - + for (q = rc->best_quality; q < rc->worst_quality; ++q) { + const double err_correction_factor = calc_correction_factor(err_per_mb, + ERR_DIVISOR, 0.5, 0.90, q); + const int bits_per_mb_at_this_q = vp9_rc_bits_per_mb(INTER_FRAME, q, + err_correction_factor); if (bits_per_mb_at_this_q <= target_norm_bits_per_mb) break; } // Restriction on active max q for constrained quality mode. - if (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY && - q < cpi->cq_target_quality) - q = cpi->cq_target_quality; - - // Adjust maxq_min_limit and maxq_max_limit limits based on - // average q observed in clip for non kf/gf/arf frames - // Give average a chance to settle though. - // PGW TODO.. This code is broken for the extended Q range - if (cpi->ni_frames > ((int)cpi->twopass.total_stats.count >> 8) && - cpi->ni_frames > 25) - adjust_maxq_qrange(cpi); - - return q; -} - -// For cq mode estimate a cq level that matches the observed -// complexity and data rate. -static int estimate_cq(VP9_COMP *cpi, - FIRSTPASS_STATS *fpstats, - int section_target_bandwitdh) { - int q; - int num_mbs = cpi->common.MBs; - int target_norm_bits_per_mb; - - double section_err = (fpstats->coded_error / fpstats->count); - double err_per_mb = section_err / num_mbs; - double err_correction_factor; - double sr_err_diff; - double sr_correction; - double speed_correction = 1.0; - double clip_iiratio; - double clip_iifactor; - - target_norm_bits_per_mb = (section_target_bandwitdh < (1 << 20)) - ? (512 * section_target_bandwitdh) / num_mbs - : 512 * (section_target_bandwitdh / num_mbs); - - - // Corrections for higher compression speed settings - // (reduced compression expected) - if (cpi->compressor_speed == 1) { - if (cpi->oxcf.cpu_used <= 5) - speed_correction = 1.04 + (/*cpi->oxcf.cpu_used*/ 0 * 0.04); - else - speed_correction = 1.25; - } - - // Look at the drop in prediction quality between the last frame - // and the GF buffer (which contained an older frame). - if (fpstats->sr_coded_error > fpstats->coded_error) { - sr_err_diff = - (fpstats->sr_coded_error - fpstats->coded_error) / - (fpstats->count * cpi->common.MBs); - sr_correction = (sr_err_diff / 32.0); - sr_correction = pow(sr_correction, 0.25); - if (sr_correction < 0.75) - sr_correction = 0.75; - else if (sr_correction > 1.25) - sr_correction = 1.25; - } else { - sr_correction = 0.75; - } - - // II ratio correction factor for clip as a whole - clip_iiratio = cpi->twopass.total_stats.intra_error / - DOUBLE_DIVIDE_CHECK(cpi->twopass.total_stats.coded_error); - clip_iifactor = 1.0 - ((clip_iiratio - 10.0) * 0.025); - if (clip_iifactor < 0.80) - clip_iifactor = 0.80; - - // Try and pick a Q that can encode the content at the given rate. - for (q = 0; q < MAXQ; q++) { - int bits_per_mb_at_this_q; - - // Error per MB based correction factor - err_correction_factor = - calc_correction_factor(err_per_mb, 100.0, 0.4, 0.90, q) * - sr_correction * speed_correction * clip_iifactor; - - bits_per_mb_at_this_q = - vp9_bits_per_mb(INTER_FRAME, q, err_correction_factor); - - if (bits_per_mb_at_this_q <= target_norm_bits_per_mb) - break; - } - - // Clip value to range "best allowed to (worst allowed - 1)" - q = select_cq_level(q); - if (q >= cpi->worst_quality) - q = cpi->worst_quality - 1; - if (q < cpi->best_quality) - q = cpi->best_quality; + if (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY) + q = MAX(q, cpi->cq_target_quality); return q; } @@ -1161,132 +903,105 @@ extern void vp9_new_framerate(VP9_COMP *cpi, double framerate); void vp9_init_second_pass(VP9_COMP *cpi) { FIRSTPASS_STATS this_frame; - FIRSTPASS_STATS *start_pos; - - double lower_bounds_min_rate = FRAME_OVERHEAD_BITS * cpi->oxcf.framerate; - double two_pass_min_rate = (double)(cpi->oxcf.target_bandwidth * - cpi->oxcf.two_pass_vbrmin_section / 100); + const FIRSTPASS_STATS *start_pos; + struct twopass_rc *const twopass = &cpi->twopass; + const VP9_CONFIG *const oxcf = &cpi->oxcf; - if (two_pass_min_rate < lower_bounds_min_rate) - two_pass_min_rate = lower_bounds_min_rate; + zero_stats(&twopass->total_stats); + zero_stats(&twopass->total_left_stats); - zero_stats(&cpi->twopass.total_stats); - zero_stats(&cpi->twopass.total_left_stats); - - if (!cpi->twopass.stats_in_end) + if (!twopass->stats_in_end) return; - cpi->twopass.total_stats = *cpi->twopass.stats_in_end; - cpi->twopass.total_left_stats = cpi->twopass.total_stats; + twopass->total_stats = *twopass->stats_in_end; + twopass->total_left_stats = twopass->total_stats; - // each frame can have a different duration, as the frame rate in the source - // isn't guaranteed to be constant. The frame rate prior to the first frame - // encoded in the second pass is a guess. However the sum duration is not. - // Its calculated based on the actual durations of all frames from the first - // pass. - vp9_new_framerate(cpi, 10000000.0 * cpi->twopass.total_stats.count / - cpi->twopass.total_stats.duration); + // Each frame can have a different duration, as the frame rate in the source + // isn't guaranteed to be constant. The frame rate prior to the first frame + // encoded in the second pass is a guess. However, the sum duration is not. + // It is calculated based on the actual durations of all frames from the + // first pass. + vp9_new_framerate(cpi, 10000000.0 * twopass->total_stats.count / + twopass->total_stats.duration); - cpi->output_framerate = cpi->oxcf.framerate; - cpi->twopass.bits_left = (int64_t)(cpi->twopass.total_stats.duration * - cpi->oxcf.target_bandwidth / 10000000.0); - cpi->twopass.bits_left -= (int64_t)(cpi->twopass.total_stats.duration * - two_pass_min_rate / 10000000.0); + cpi->output_framerate = oxcf->framerate; + twopass->bits_left = (int64_t)(twopass->total_stats.duration * + oxcf->target_bandwidth / 10000000.0); // Calculate a minimum intra value to be used in determining the IIratio // scores used in the second pass. We have this minimum to make sure // that clips that are static but "low complexity" in the intra domain - // are still boosted appropriately for KF/GF/ARF - cpi->twopass.kf_intra_err_min = KF_MB_INTRA_MIN * cpi->common.MBs; - cpi->twopass.gf_intra_err_min = GF_MB_INTRA_MIN * cpi->common.MBs; + // are still boosted appropriately for KF/GF/ARF. + twopass->kf_intra_err_min = KF_MB_INTRA_MIN * cpi->common.MBs; + twopass->gf_intra_err_min = GF_MB_INTRA_MIN * cpi->common.MBs; - // This variable monitors how far behind the second ref update is lagging - cpi->twopass.sr_update_lag = 1; + // This variable monitors how far behind the second ref update is lagging. + twopass->sr_update_lag = 1; // Scan the first pass file and calculate an average Intra / Inter error score // ratio for the sequence. { double sum_iiratio = 0.0; - double IIRatio; - - start_pos = cpi->twopass.stats_in; // Note the starting "file" position. + start_pos = twopass->stats_in; - while (input_stats(cpi, &this_frame) != EOF) { - IIRatio = this_frame.intra_error - / DOUBLE_DIVIDE_CHECK(this_frame.coded_error); - IIRatio = (IIRatio < 1.0) ? 1.0 : (IIRatio > 20.0) ? 20.0 : IIRatio; - sum_iiratio += IIRatio; + while (input_stats(twopass, &this_frame) != EOF) { + const double iiratio = this_frame.intra_error / + DOUBLE_DIVIDE_CHECK(this_frame.coded_error); + sum_iiratio += fclamp(iiratio, 1.0, 20.0); } - cpi->twopass.avg_iiratio = sum_iiratio / - DOUBLE_DIVIDE_CHECK((double)cpi->twopass.total_stats.count); + twopass->avg_iiratio = sum_iiratio / + DOUBLE_DIVIDE_CHECK((double)twopass->total_stats.count); - // Reset file position - reset_fpf_position(cpi, start_pos); + reset_fpf_position(twopass, start_pos); } // Scan the first pass file and calculate a modified total error based upon // the bias/power function used to allocate bits. { - start_pos = cpi->twopass.stats_in; // Note starting "file" position + double av_error = twopass->total_stats.ssim_weighted_pred_err / + DOUBLE_DIVIDE_CHECK(twopass->total_stats.count); - cpi->twopass.modified_error_total = 0.0; - cpi->twopass.modified_error_used = 0.0; + start_pos = twopass->stats_in; - while (input_stats(cpi, &this_frame) != EOF) { - cpi->twopass.modified_error_total += + twopass->modified_error_total = 0.0; + twopass->modified_error_min = + (av_error * oxcf->two_pass_vbrmin_section) / 100; + twopass->modified_error_max = + (av_error * oxcf->two_pass_vbrmax_section) / 100; + + while (input_stats(twopass, &this_frame) != EOF) { + twopass->modified_error_total += calculate_modified_err(cpi, &this_frame); } - cpi->twopass.modified_error_left = cpi->twopass.modified_error_total; + twopass->modified_error_left = twopass->modified_error_total; - reset_fpf_position(cpi, start_pos); // Reset file position + reset_fpf_position(twopass, start_pos); } } -void vp9_end_second_pass(VP9_COMP *cpi) { -} - -// This function gives and estimate of how badly we believe -// the prediction quality is decaying from frame to frame. -static double get_prediction_decay_rate(VP9_COMP *cpi, - FIRSTPASS_STATS *next_frame) { - double prediction_decay_rate; - double second_ref_decay; - double mb_sr_err_diff; - - // Initial basis is the % mbs inter coded - prediction_decay_rate = next_frame->pcnt_inter; - +// This function gives an estimate of how badly we believe the prediction +// quality is decaying from frame to frame. +static double get_prediction_decay_rate(const VP9_COMMON *cm, + const FIRSTPASS_STATS *next_frame) { // Look at the observed drop in prediction quality between the last frame // and the GF buffer (which contains an older frame). - mb_sr_err_diff = (next_frame->sr_coded_error - next_frame->coded_error) / - cpi->common.MBs; - if (mb_sr_err_diff <= 512.0) { - second_ref_decay = 1.0 - (mb_sr_err_diff / 512.0); - second_ref_decay = pow(second_ref_decay, 0.5); - if (second_ref_decay < 0.85) - second_ref_decay = 0.85; - else if (second_ref_decay > 1.0) - second_ref_decay = 1.0; - } else { - second_ref_decay = 0.85; - } - - if (second_ref_decay < prediction_decay_rate) - prediction_decay_rate = second_ref_decay; + const double mb_sr_err_diff = (next_frame->sr_coded_error - + next_frame->coded_error) / cm->MBs; + const double second_ref_decay = mb_sr_err_diff <= 512.0 + ? fclamp(pow(1.0 - (mb_sr_err_diff / 512.0), 0.5), 0.85, 1.0) + : 0.85; - return prediction_decay_rate; + return MIN(second_ref_decay, next_frame->pcnt_inter); } // Function to test for a condition where a complex transition is followed // by a static section. For example in slide shows where there is a fade // between slides. This is to help with more optimal kf and gf positioning. -static int detect_transition_to_still( - VP9_COMP *cpi, - int frame_interval, - int still_interval, - double loop_decay_rate, - double last_decay_rate) { +static int detect_transition_to_still(VP9_COMP *cpi, int frame_interval, + int still_interval, + double loop_decay_rate, + double last_decay_rate) { int trans_to_still = 0; // Break clause to detect very still sections after motion @@ -1296,25 +1011,21 @@ static int detect_transition_to_still( loop_decay_rate >= 0.999 && last_decay_rate < 0.9) { int j; - FIRSTPASS_STATS *position = cpi->twopass.stats_in; + const FIRSTPASS_STATS *position = cpi->twopass.stats_in; FIRSTPASS_STATS tmp_next_frame; - double zz_inter; - // Look ahead a few frames to see if static condition - // persists... - for (j = 0; j < still_interval; j++) { - if (EOF == input_stats(cpi, &tmp_next_frame)) + // Look ahead a few frames to see if static condition persists... + for (j = 0; j < still_interval; ++j) { + if (EOF == input_stats(&cpi->twopass, &tmp_next_frame)) break; - zz_inter = - (tmp_next_frame.pcnt_inter - tmp_next_frame.pcnt_motion); - if (zz_inter < 0.999) + if (tmp_next_frame.pcnt_inter - tmp_next_frame.pcnt_motion < 0.999) break; } - // Reset file position - reset_fpf_position(cpi, position); - // Only if it does do we signal a transition to still + reset_fpf_position(&cpi->twopass, position); + + // Only if it does do we signal a transition to still. if (j == still_interval) trans_to_still = 1; } @@ -1324,20 +1035,20 @@ static int detect_transition_to_still( // This function detects a flash through the high relative pcnt_second_ref // score in the frame following a flash frame. The offset passed in should -// reflect this -static int detect_flash(VP9_COMP *cpi, int offset) { +// reflect this. +static int detect_flash(const struct twopass_rc *twopass, int offset) { FIRSTPASS_STATS next_frame; int flash_detected = 0; // Read the frame data. // The return is FALSE (no flash detected) if not a valid frame - if (read_frame_stats(cpi, &next_frame, offset) != EOF) { + if (read_frame_stats(twopass, &next_frame, offset) != EOF) { // What we are looking for here is a situation where there is a // brief break in prediction (such as a flash) but subsequent frames // are reasonably well predicted by an earlier (pre flash) frame. // The recovery after a flash is indicated by a high pcnt_second_ref - // comapred to pcnt_inter. + // compared to pcnt_inter. if (next_frame.pcnt_second_ref > next_frame.pcnt_inter && next_frame.pcnt_second_ref >= 0.5) flash_detected = 1; @@ -1346,56 +1057,48 @@ static int detect_flash(VP9_COMP *cpi, int offset) { return flash_detected; } -// Update the motion related elements to the GF arf boost calculation +// Update the motion related elements to the GF arf boost calculation. static void accumulate_frame_motion_stats( FIRSTPASS_STATS *this_frame, double *this_frame_mv_in_out, double *mv_in_out_accumulator, double *abs_mv_in_out_accumulator, double *mv_ratio_accumulator) { - // double this_frame_mv_in_out; - double this_frame_mvr_ratio; - double this_frame_mvc_ratio; double motion_pct; // Accumulate motion stats. motion_pct = this_frame->pcnt_motion; - // Accumulate Motion In/Out of frame stats + // Accumulate Motion In/Out of frame stats. *this_frame_mv_in_out = this_frame->mv_in_out_count * motion_pct; *mv_in_out_accumulator += this_frame->mv_in_out_count * motion_pct; - *abs_mv_in_out_accumulator += - fabs(this_frame->mv_in_out_count * motion_pct); + *abs_mv_in_out_accumulator += fabs(this_frame->mv_in_out_count * motion_pct); // Accumulate a measure of how uniform (or conversely how random) - // the motion field is. (A ratio of absmv / mv) + // the motion field is (a ratio of absmv / mv). if (motion_pct > 0.05) { - this_frame_mvr_ratio = fabs(this_frame->mvr_abs) / + const double this_frame_mvr_ratio = fabs(this_frame->mvr_abs) / DOUBLE_DIVIDE_CHECK(fabs(this_frame->MVr)); - this_frame_mvc_ratio = fabs(this_frame->mvc_abs) / + const double this_frame_mvc_ratio = fabs(this_frame->mvc_abs) / DOUBLE_DIVIDE_CHECK(fabs(this_frame->MVc)); - *mv_ratio_accumulator += - (this_frame_mvr_ratio < this_frame->mvr_abs) + *mv_ratio_accumulator += (this_frame_mvr_ratio < this_frame->mvr_abs) ? (this_frame_mvr_ratio * motion_pct) : this_frame->mvr_abs * motion_pct; - *mv_ratio_accumulator += - (this_frame_mvc_ratio < this_frame->mvc_abs) + *mv_ratio_accumulator += (this_frame_mvc_ratio < this_frame->mvc_abs) ? (this_frame_mvc_ratio * motion_pct) : this_frame->mvc_abs * motion_pct; } } // Calculate a baseline boost number for the current frame. -static double calc_frame_boost( - VP9_COMP *cpi, - FIRSTPASS_STATS *this_frame, - double this_frame_mv_in_out) { +static double calc_frame_boost(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame, + double this_frame_mv_in_out) { double frame_boost; - // Underlying boost factor is based on inter intra error ratio + // Underlying boost factor is based on inter intra error ratio. if (this_frame->intra_error > cpi->twopass.gf_intra_err_min) frame_boost = (IIFACTOR * this_frame->intra_error / DOUBLE_DIVIDE_CHECK(this_frame->coded_error)); @@ -1403,28 +1106,23 @@ static double calc_frame_boost( frame_boost = (IIFACTOR * cpi->twopass.gf_intra_err_min / DOUBLE_DIVIDE_CHECK(this_frame->coded_error)); - // Increase boost for frames where new data coming into frame - // (eg zoom out). Slightly reduce boost if there is a net balance - // of motion out of the frame (zoom in). - // The range for this_frame_mv_in_out is -1.0 to +1.0 + // Increase boost for frames where new data coming into frame (e.g. zoom out). + // Slightly reduce boost if there is a net balance of motion out of the frame + // (zoom in). The range for this_frame_mv_in_out is -1.0 to +1.0. if (this_frame_mv_in_out > 0.0) frame_boost += frame_boost * (this_frame_mv_in_out * 2.0); - // In extreme case boost is halved + // In the extreme case the boost is halved. else frame_boost += frame_boost * (this_frame_mv_in_out / 2.0); - // Clip to maximum - if (frame_boost > GF_RMAX) - frame_boost = GF_RMAX; - - return frame_boost; + return MIN(frame_boost, GF_RMAX); } static int calc_arf_boost(VP9_COMP *cpi, int offset, int f_frames, int b_frames, int *f_boost, int *b_boost) { FIRSTPASS_STATS this_frame; - + struct twopass_rc *const twopass = &cpi->twopass; int i; double boost_score = 0.0; double mv_ratio_accumulator = 0.0; @@ -1435,12 +1133,12 @@ static int calc_arf_boost(VP9_COMP *cpi, int offset, int arf_boost; int flash_detected = 0; - // Search forward from the proposed arf/next gf position - for (i = 0; i < f_frames; i++) { - if (read_frame_stats(cpi, &this_frame, (i + offset)) == EOF) + // Search forward from the proposed arf/next gf position. + for (i = 0; i < f_frames; ++i) { + if (read_frame_stats(twopass, &this_frame, (i + offset)) == EOF) break; - // Update the motion related elements to the boost calculation + // Update the motion related elements to the boost calculation. accumulate_frame_motion_stats(&this_frame, &this_frame_mv_in_out, &mv_in_out_accumulator, &abs_mv_in_out_accumulator, @@ -1448,12 +1146,12 @@ static int calc_arf_boost(VP9_COMP *cpi, int offset, // We want to discount the flash frame itself and the recovery // frame that follows as both will have poor scores. - flash_detected = detect_flash(cpi, (i + offset)) || - detect_flash(cpi, (i + offset + 1)); + flash_detected = detect_flash(twopass, i + offset) || + detect_flash(twopass, i + offset + 1); - // Cumulative effect of prediction quality decay + // Accumulate the effect of prediction quality decay. if (!flash_detected) { - decay_accumulator *= get_prediction_decay_rate(cpi, &this_frame); + decay_accumulator *= get_prediction_decay_rate(&cpi->common, &this_frame); decay_accumulator = decay_accumulator < MIN_DECAY_FACTOR ? MIN_DECAY_FACTOR : decay_accumulator; } @@ -1464,7 +1162,7 @@ static int calc_arf_boost(VP9_COMP *cpi, int offset, *f_boost = (int)boost_score; - // Reset for backward looking loop + // Reset for backward looking loop. boost_score = 0.0; mv_ratio_accumulator = 0.0; decay_accumulator = 1.0; @@ -1472,12 +1170,12 @@ static int calc_arf_boost(VP9_COMP *cpi, int offset, mv_in_out_accumulator = 0.0; abs_mv_in_out_accumulator = 0.0; - // Search backward towards last gf position - for (i = -1; i >= -b_frames; i--) { - if (read_frame_stats(cpi, &this_frame, (i + offset)) == EOF) + // Search backward towards last gf position. + for (i = -1; i >= -b_frames; --i) { + if (read_frame_stats(twopass, &this_frame, (i + offset)) == EOF) break; - // Update the motion related elements to the boost calculation + // Update the motion related elements to the boost calculation. accumulate_frame_motion_stats(&this_frame, &this_frame_mv_in_out, &mv_in_out_accumulator, &abs_mv_in_out_accumulator, @@ -1485,12 +1183,12 @@ static int calc_arf_boost(VP9_COMP *cpi, int offset, // We want to discount the the flash frame itself and the recovery // frame that follows as both will have poor scores. - flash_detected = detect_flash(cpi, (i + offset)) || - detect_flash(cpi, (i + offset + 1)); + flash_detected = detect_flash(twopass, i + offset) || + detect_flash(twopass, i + offset + 1); - // Cumulative effect of prediction quality decay + // Cumulative effect of prediction quality decay. if (!flash_detected) { - decay_accumulator *= get_prediction_decay_rate(cpi, &this_frame); + decay_accumulator *= get_prediction_decay_rate(&cpi->common, &this_frame); decay_accumulator = decay_accumulator < MIN_DECAY_FACTOR ? MIN_DECAY_FACTOR : decay_accumulator; } @@ -1538,8 +1236,7 @@ static void schedule_frames(VP9_COMP *cpi, const int start, const int end, return; } - // ARF Group: work out the ARF schedule. - // Mark ARF frames as negative. + // ARF Group: Work out the ARF schedule and mark ARF frames as negative. if (end < 0) { // printf("start:%d end:%d\n", -end, -end); // ARF frame is at the end of the range. @@ -1591,6 +1288,8 @@ void define_fixed_arf_period(VP9_COMP *cpi) { cpi->this_frame_weight = cpi->arf_weight[cpi->sequence_number]; assert(cpi->this_frame_weight >= 0); + cpi->twopass.gf_zeromotion_pct = 0; + // Initialize frame coding order variables. cpi->new_frame_coding_order_period = 0; cpi->next_frame_in_order = 0; @@ -1599,16 +1298,16 @@ void define_fixed_arf_period(VP9_COMP *cpi) { vp9_zero(cpi->arf_buffer_idx); vpx_memset(cpi->arf_weight, -1, sizeof(cpi->arf_weight)); - if (cpi->twopass.frames_to_key <= (FIXED_ARF_GROUP_SIZE + 8)) { + if (cpi->rc.frames_to_key <= (FIXED_ARF_GROUP_SIZE + 8)) { // Setup a GF group close to the keyframe. - cpi->source_alt_ref_pending = 0; - cpi->baseline_gf_interval = cpi->twopass.frames_to_key; - schedule_frames(cpi, 0, (cpi->baseline_gf_interval - 1), 2, 0, 0); + cpi->rc.source_alt_ref_pending = 0; + cpi->rc.baseline_gf_interval = cpi->rc.frames_to_key; + schedule_frames(cpi, 0, (cpi->rc.baseline_gf_interval - 1), 2, 0, 0); } else { // Setup a fixed period ARF group. - cpi->source_alt_ref_pending = 1; - cpi->baseline_gf_interval = FIXED_ARF_GROUP_SIZE; - schedule_frames(cpi, 0, -(cpi->baseline_gf_interval - 1), 2, 1, 0); + cpi->rc.source_alt_ref_pending = 1; + cpi->rc.baseline_gf_interval = FIXED_ARF_GROUP_SIZE; + schedule_frames(cpi, 0, -(cpi->rc.baseline_gf_interval - 1), 2, 1, 0); } // Replace level indicator of -1 with correct level. @@ -1647,7 +1346,8 @@ void define_fixed_arf_period(VP9_COMP *cpi) { // Analyse and define a gf/arf group. static void define_gf_group(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { FIRSTPASS_STATS next_frame = { 0 }; - FIRSTPASS_STATS *start_pos; + const FIRSTPASS_STATS *start_pos; + struct twopass_rc *const twopass = &cpi->twopass; int i; double boost_score = 0.0; double old_boost_score = 0.0; @@ -1659,40 +1359,40 @@ static void define_gf_group(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { double decay_accumulator = 1.0; double zero_motion_accumulator = 1.0; - double loop_decay_rate = 1.00; // Starting decay rate + double loop_decay_rate = 1.00; double last_loop_decay_rate = 1.00; double this_frame_mv_in_out = 0.0; double mv_in_out_accumulator = 0.0; double abs_mv_in_out_accumulator = 0.0; double mv_ratio_accumulator_thresh; - int max_bits = frame_max_bits(cpi); // Max for a single frame + const int max_bits = frame_max_bits(cpi); // Max bits for a single frame. - unsigned int allow_alt_ref = - cpi->oxcf.play_alternate && cpi->oxcf.lag_in_frames; + unsigned int allow_alt_ref = cpi->oxcf.play_alternate && + cpi->oxcf.lag_in_frames; int f_boost = 0; int b_boost = 0; int flash_detected; int active_max_gf_interval; + RATE_CONTROL *const rc = &cpi->rc; - cpi->twopass.gf_group_bits = 0; + twopass->gf_group_bits = 0; - vp9_clear_system_state(); // __asm emms; + vp9_clear_system_state(); - start_pos = cpi->twopass.stats_in; + start_pos = twopass->stats_in; // Load stats for the current frame. mod_frame_err = calculate_modified_err(cpi, this_frame); - // Note the error of the frame at the start of the group (this will be - // the GF frame error if we code a normal gf + // Note the error of the frame at the start of the group. This will be + // the GF frame error if we code a normal gf. gf_first_frame_err = mod_frame_err; - // Special treatment if the current frame is a key frame (which is also - // a gf). If it is then its error score (and hence bit allocation) need - // to be subtracted out from the calculation for the GF group - if (cpi->common.frame_type == KEY_FRAME) + // If this is a key frame or the overlay from a previous arf then + // the error score / cost of this frame has already been accounted for. + if (cpi->common.frame_type == KEY_FRAME || rc->source_alt_ref_active) gf_group_err -= gf_first_frame_err; // Motion breakout threshold for loop below depends on image size. @@ -1704,50 +1404,49 @@ static void define_gf_group(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { // bits to spare and are better with a smaller interval and smaller boost. // At high Q when there are few bits to spare we are better with a longer // interval to spread the cost of the GF. + // active_max_gf_interval = - 12 + ((int)vp9_convert_qindex_to_q(cpi->active_worst_quality) >> 5); + 12 + ((int)vp9_convert_qindex_to_q(rc->last_q[INTER_FRAME]) >> 5); - if (active_max_gf_interval > cpi->max_gf_interval) - active_max_gf_interval = cpi->max_gf_interval; + if (active_max_gf_interval > rc->max_gf_interval) + active_max_gf_interval = rc->max_gf_interval; i = 0; - while (((i < cpi->twopass.static_scene_max_gf_interval) || - ((cpi->twopass.frames_to_key - i) < MIN_GF_INTERVAL)) && - (i < cpi->twopass.frames_to_key)) { - i++; // Increment the loop counter + while (i < rc->static_scene_max_gf_interval && i < rc->frames_to_key) { + ++i; - // Accumulate error score of frames in this gf group + // Accumulate error score of frames in this gf group. mod_frame_err = calculate_modified_err(cpi, this_frame); gf_group_err += mod_frame_err; - if (EOF == input_stats(cpi, &next_frame)) + if (EOF == input_stats(twopass, &next_frame)) break; // Test for the case where there is a brief flash but the prediction // quality back to an earlier frame is then restored. - flash_detected = detect_flash(cpi, 0); + flash_detected = detect_flash(twopass, 0); - // Update the motion related elements to the boost calculation + // Update the motion related elements to the boost calculation. accumulate_frame_motion_stats(&next_frame, &this_frame_mv_in_out, &mv_in_out_accumulator, &abs_mv_in_out_accumulator, &mv_ratio_accumulator); - // Cumulative effect of prediction quality decay + // Accumulate the effect of prediction quality decay. if (!flash_detected) { last_loop_decay_rate = loop_decay_rate; - loop_decay_rate = get_prediction_decay_rate(cpi, &next_frame); + loop_decay_rate = get_prediction_decay_rate(&cpi->common, &next_frame); decay_accumulator = decay_accumulator * loop_decay_rate; // Monitor for static sections. if ((next_frame.pcnt_inter - next_frame.pcnt_motion) < zero_motion_accumulator) { - zero_motion_accumulator = - (next_frame.pcnt_inter - next_frame.pcnt_motion); + zero_motion_accumulator = next_frame.pcnt_inter - + next_frame.pcnt_motion; } - // Break clause to detect very still sections after motion - // (for example a static image after a fade or other transition). + // Break clause to detect very still sections after motion. For example, + // a static image after a fade or other transition. if (detect_transition_to_still(cpi, i, 5, loop_decay_rate, last_loop_decay_rate)) { allow_alt_ref = 0; @@ -1755,20 +1454,17 @@ static void define_gf_group(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { } } - // Calculate a boost number for this frame - boost_score += - (decay_accumulator * + // Calculate a boost number for this frame. + boost_score += (decay_accumulator * calc_frame_boost(cpi, &next_frame, this_frame_mv_in_out)); // Break out conditions. if ( - // Break at cpi->max_gf_interval unless almost totally static + // Break at cpi->max_gf_interval unless almost totally static. (i >= active_max_gf_interval && (zero_motion_accumulator < 0.995)) || ( - // Don't break out with a very short interval + // Don't break out with a very short interval. (i > MIN_GF_INTERVAL) && - // Don't break out very close to a key frame - ((cpi->twopass.frames_to_key - i) >= MIN_GF_INTERVAL) && ((boost_score > 125.0) || (next_frame.pcnt_inter < 0.75)) && (!flash_detected) && ((mv_ratio_accumulator > mv_ratio_accumulator_thresh) || @@ -1784,26 +1480,23 @@ static void define_gf_group(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { old_boost_score = boost_score; } - cpi->gf_zeromotion_pct = (int)(zero_motion_accumulator * 1000.0); + twopass->gf_zeromotion_pct = (int)(zero_motion_accumulator * 1000.0); - // Don't allow a gf too near the next kf - if ((cpi->twopass.frames_to_key - i) < MIN_GF_INTERVAL) { - while (i < cpi->twopass.frames_to_key) { - i++; + // Don't allow a gf too near the next kf. + if ((rc->frames_to_key - i) < MIN_GF_INTERVAL) { + while (i < (rc->frames_to_key + !rc->next_key_frame_forced)) { + ++i; - if (EOF == input_stats(cpi, this_frame)) + if (EOF == input_stats(twopass, this_frame)) break; - if (i < cpi->twopass.frames_to_key) { + if (i < rc->frames_to_key) { mod_frame_err = calculate_modified_err(cpi, this_frame); gf_group_err += mod_frame_err; } } } - // Set the interval until the next gf or arf. - cpi->baseline_gf_interval = i; - #if CONFIG_MULTIPLE_ARF if (cpi->multi_arf_enabled) { // Initialize frame coding order variables. @@ -1816,36 +1509,39 @@ static void define_gf_group(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { } #endif - // Should we use the alternate reference frame + // Set the interval until the next gf. + if (cpi->common.frame_type == KEY_FRAME || rc->source_alt_ref_active) + rc->baseline_gf_interval = i - 1; + else + rc->baseline_gf_interval = i; + + // Should we use the alternate reference frame. if (allow_alt_ref && (i < cpi->oxcf.lag_in_frames) && (i >= MIN_GF_INTERVAL) && - // dont use ARF very near next kf - (i <= (cpi->twopass.frames_to_key - MIN_GF_INTERVAL)) && - ((next_frame.pcnt_inter > 0.75) || - (next_frame.pcnt_second_ref > 0.5)) && - ((mv_in_out_accumulator / (double)i > -0.2) || - (mv_in_out_accumulator > -2.0)) && - (boost_score > 100)) { - // Alternative boost calculation for alt ref - cpi->gfu_boost = calc_arf_boost(cpi, 0, (i - 1), (i - 1), &f_boost, - &b_boost); - cpi->source_alt_ref_pending = 1; + // For real scene cuts (not forced kfs) don't allow arf very near kf. + (rc->next_key_frame_forced || + (i <= (rc->frames_to_key - MIN_GF_INTERVAL)))) { + // Calculate the boost for alt ref. + rc->gfu_boost = calc_arf_boost(cpi, 0, (i - 1), (i - 1), &f_boost, + &b_boost); + rc->source_alt_ref_pending = 1; #if CONFIG_MULTIPLE_ARF // Set the ARF schedule. if (cpi->multi_arf_enabled) { - schedule_frames(cpi, 0, -(cpi->baseline_gf_interval - 1), 2, 1, 0); + schedule_frames(cpi, 0, -(rc->baseline_gf_interval - 1), 2, 1, 0); } #endif } else { - cpi->gfu_boost = (int)boost_score; - cpi->source_alt_ref_pending = 0; + rc->gfu_boost = (int)boost_score; + rc->source_alt_ref_pending = 0; #if CONFIG_MULTIPLE_ARF // Set the GF schedule. if (cpi->multi_arf_enabled) { - schedule_frames(cpi, 0, cpi->baseline_gf_interval - 1, 2, 0, 0); - assert(cpi->new_frame_coding_order_period == cpi->baseline_gf_interval); + schedule_frames(cpi, 0, rc->baseline_gf_interval - 1, 2, 0, 0); + assert(cpi->new_frame_coding_order_period == + rc->baseline_gf_interval); } #endif } @@ -1888,65 +1584,43 @@ static void define_gf_group(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { #endif #endif - // Now decide how many bits should be allocated to the GF group as a - // proportion of those remaining in the kf group. - // The final key frame group in the clip is treated as a special case - // where cpi->twopass.kf_group_bits is tied to cpi->twopass.bits_left. - // This is also important for short clips where there may only be one - // key frame. - if (cpi->twopass.frames_to_key >= (int)(cpi->twopass.total_stats.count - - cpi->common.current_video_frame)) { - cpi->twopass.kf_group_bits = - (cpi->twopass.bits_left > 0) ? cpi->twopass.bits_left : 0; - } - - // Calculate the bits to be allocated to the group as a whole - if ((cpi->twopass.kf_group_bits > 0) && - (cpi->twopass.kf_group_error_left > 0)) { - cpi->twopass.gf_group_bits = - (int64_t)(cpi->twopass.kf_group_bits * + // Calculate the bits to be allocated to the group as a whole. + if (twopass->kf_group_bits > 0 && twopass->kf_group_error_left > 0) { + twopass->gf_group_bits = (int64_t)(cpi->twopass.kf_group_bits * (gf_group_err / cpi->twopass.kf_group_error_left)); } else { - cpi->twopass.gf_group_bits = 0; + twopass->gf_group_bits = 0; } - cpi->twopass.gf_group_bits = - (cpi->twopass.gf_group_bits < 0) - ? 0 - : (cpi->twopass.gf_group_bits > cpi->twopass.kf_group_bits) - ? cpi->twopass.kf_group_bits : cpi->twopass.gf_group_bits; + twopass->gf_group_bits = (twopass->gf_group_bits < 0) ? + 0 : (twopass->gf_group_bits > twopass->kf_group_bits) ? + twopass->kf_group_bits : twopass->gf_group_bits; // Clip cpi->twopass.gf_group_bits based on user supplied data rate - // variability limit (cpi->oxcf.two_pass_vbrmax_section) - if (cpi->twopass.gf_group_bits > - (int64_t)max_bits * cpi->baseline_gf_interval) - cpi->twopass.gf_group_bits = (int64_t)max_bits * cpi->baseline_gf_interval; - - // Reset the file position - reset_fpf_position(cpi, start_pos); + // variability limit, cpi->oxcf.two_pass_vbrmax_section. + if (twopass->gf_group_bits > (int64_t)max_bits * rc->baseline_gf_interval) + twopass->gf_group_bits = (int64_t)max_bits * rc->baseline_gf_interval; - // Update the record of error used so far (only done once per gf group) - cpi->twopass.modified_error_used += gf_group_err; + // Reset the file position. + reset_fpf_position(twopass, start_pos); // Assign bits to the arf or gf. - for (i = 0; - i <= (cpi->source_alt_ref_pending && cpi->common.frame_type != KEY_FRAME); - ++i) { + for (i = 0; i <= (rc->source_alt_ref_pending && + cpi->common.frame_type != KEY_FRAME); ++i) { int allocation_chunks; - int q = cpi->oxcf.fixed_q < 0 ? cpi->last_q[INTER_FRAME] - : cpi->oxcf.fixed_q; + int q = rc->last_q[INTER_FRAME]; int gf_bits; - int boost = (cpi->gfu_boost * vp9_gfboost_qadjust(q)) / 100; + int boost = (rc->gfu_boost * gfboost_qadjust(q)) / 100; - // Set max and minimum boost and hence minimum allocation - boost = clamp(boost, 125, (cpi->baseline_gf_interval + 1) * 200); + // Set max and minimum boost and hence minimum allocation. + boost = clamp(boost, 125, (rc->baseline_gf_interval + 1) * 200); - if (cpi->source_alt_ref_pending && i == 0) - allocation_chunks = ((cpi->baseline_gf_interval + 1) * 100) + boost; + if (rc->source_alt_ref_pending && i == 0) + allocation_chunks = ((rc->baseline_gf_interval + 1) * 100) + boost; else - allocation_chunks = (cpi->baseline_gf_interval * 100) + (boost - 100); + allocation_chunks = (rc->baseline_gf_interval * 100) + (boost - 100); - // Prevent overflow + // Prevent overflow. if (boost > 1023) { int divisor = boost >> 10; boost /= divisor; @@ -1954,18 +1628,18 @@ static void define_gf_group(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { } // Calculate the number of bits to be spent on the gf or arf based on - // the boost number - gf_bits = (int)((double)boost * (cpi->twopass.gf_group_bits / - (double)allocation_chunks)); + // the boost number. + gf_bits = (int)((double)boost * (twopass->gf_group_bits / + (double)allocation_chunks)); // If the frame that is to be boosted is simpler than the average for // the gf/arf group then use an alternative calculation - // based on the error score of the frame itself - if (mod_frame_err < gf_group_err / (double)cpi->baseline_gf_interval) { - double alt_gf_grp_bits = - (double)cpi->twopass.kf_group_bits * - (mod_frame_err * (double)cpi->baseline_gf_interval) / - DOUBLE_DIVIDE_CHECK(cpi->twopass.kf_group_error_left); + // based on the error score of the frame itself. + if (rc->baseline_gf_interval < 1 || + mod_frame_err < gf_group_err / (double)rc->baseline_gf_interval) { + double alt_gf_grp_bits = (double)twopass->kf_group_bits * + (mod_frame_err * (double)rc->baseline_gf_interval) / + DOUBLE_DIVIDE_CHECK(twopass->kf_group_error_left); int alt_gf_bits = (int)((double)boost * (alt_gf_grp_bits / (double)allocation_chunks)); @@ -1976,68 +1650,68 @@ static void define_gf_group(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { // If it is harder than other frames in the group make sure it at // least receives an allocation in keeping with its relative error // score, otherwise it may be worse off than an "un-boosted" frame. - int alt_gf_bits = (int)((double)cpi->twopass.kf_group_bits * + int alt_gf_bits = (int)((double)twopass->kf_group_bits * mod_frame_err / - DOUBLE_DIVIDE_CHECK(cpi->twopass.kf_group_error_left)); + DOUBLE_DIVIDE_CHECK(twopass->kf_group_error_left)); if (alt_gf_bits > gf_bits) gf_bits = alt_gf_bits; } - // Dont allow a negative value for gf_bits + // Don't allow a negative value for gf_bits. if (gf_bits < 0) gf_bits = 0; - // Add in minimum for a frame - gf_bits += cpi->min_frame_bandwidth; - if (i == 0) { - cpi->twopass.gf_bits = gf_bits; + twopass->gf_bits = gf_bits; } - if (i == 1 || (!cpi->source_alt_ref_pending - && (cpi->common.frame_type != KEY_FRAME))) { - // Per frame bit target for this frame - cpi->per_frame_bandwidth = gf_bits; + if (i == 1 || + (!rc->source_alt_ref_pending && + cpi->common.frame_type != KEY_FRAME)) { + // Calculate the per frame bit target for this frame. + vp9_rc_set_frame_target(cpi, gf_bits); } } { - // Adjust KF group bits and error remaining - cpi->twopass.kf_group_error_left -= (int64_t)gf_group_err; - cpi->twopass.kf_group_bits -= cpi->twopass.gf_group_bits; - - if (cpi->twopass.kf_group_bits < 0) - cpi->twopass.kf_group_bits = 0; - - // Note the error score left in the remaining frames of the group. - // For normal GFs we want to remove the error score for the first frame - // of the group (except in Key frame case where this has already - // happened) - if (!cpi->source_alt_ref_pending && cpi->common.frame_type != KEY_FRAME) - cpi->twopass.gf_group_error_left = (int64_t)(gf_group_err + // Adjust KF group bits and error remaining. + twopass->kf_group_error_left -= (int64_t)gf_group_err; + twopass->kf_group_bits -= twopass->gf_group_bits; + + if (twopass->kf_group_bits < 0) + twopass->kf_group_bits = 0; + + // If this is an arf update we want to remove the score for the overlay + // frame at the end which will usually be very cheap to code. + // The overlay frame has already, in effect, been coded so we want to spread + // the remaining bits among the other frames. + // For normal GFs remove the score for the GF itself unless this is + // also a key frame in which case it has already been accounted for. + if (rc->source_alt_ref_pending) { + twopass->gf_group_error_left = (int64_t)(gf_group_err - mod_frame_err); + } else if (cpi->common.frame_type != KEY_FRAME) { + twopass->gf_group_error_left = (int64_t)(gf_group_err - gf_first_frame_err); - else - cpi->twopass.gf_group_error_left = (int64_t)gf_group_err; + } else { + twopass->gf_group_error_left = (int64_t)gf_group_err; + } - cpi->twopass.gf_group_bits -= cpi->twopass.gf_bits - - cpi->min_frame_bandwidth; + twopass->gf_group_bits -= twopass->gf_bits; - if (cpi->twopass.gf_group_bits < 0) - cpi->twopass.gf_group_bits = 0; + if (twopass->gf_group_bits < 0) + twopass->gf_group_bits = 0; // This condition could fail if there are two kfs very close together - // despite (MIN_GF_INTERVAL) and would cause a divide by 0 in the + // despite MIN_GF_INTERVAL and would cause a divide by 0 in the // calculation of alt_extra_bits. - if (cpi->baseline_gf_interval >= 3) { - const int boost = cpi->source_alt_ref_pending ? b_boost : cpi->gfu_boost; + if (rc->baseline_gf_interval >= 3) { + const int boost = rc->source_alt_ref_pending ? b_boost : rc->gfu_boost; if (boost >= 150) { - int alt_extra_bits; - int pct_extra = (boost - 100) / 50; - pct_extra = (pct_extra > 20) ? 20 : pct_extra; - - alt_extra_bits = (int)((cpi->twopass.gf_group_bits * pct_extra) / 100); - cpi->twopass.gf_group_bits -= alt_extra_bits; + const int pct_extra = MIN(20, (boost - 100) / 50); + const int alt_extra_bits = (int)((twopass->gf_group_bits * pct_extra) / + 100); + twopass->gf_group_bits -= alt_extra_bits; } } } @@ -2046,32 +1720,29 @@ static void define_gf_group(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { FIRSTPASS_STATS sectionstats; zero_stats(§ionstats); - reset_fpf_position(cpi, start_pos); + reset_fpf_position(twopass, start_pos); - for (i = 0; i < cpi->baseline_gf_interval; i++) { - input_stats(cpi, &next_frame); + for (i = 0; i < rc->baseline_gf_interval; ++i) { + input_stats(twopass, &next_frame); accumulate_stats(§ionstats, &next_frame); } avg_stats(§ionstats); - cpi->twopass.section_intra_rating = (int) + twopass->section_intra_rating = (int) (sectionstats.intra_error / DOUBLE_DIVIDE_CHECK(sectionstats.coded_error)); - reset_fpf_position(cpi, start_pos); + reset_fpf_position(twopass, start_pos); } } // Allocate bits to a normal frame that is neither a gf an arf or a key frame. static void assign_std_frame_bits(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { int target_frame_size; - double modified_err; double err_fraction; - - // Max for a single frame. - int max_bits = frame_max_bits(cpi); + const int max_bits = frame_max_bits(cpi); // Max for a single frame. // Calculate modified prediction error used in bit allocation. modified_err = calculate_modified_err(cpi, this_frame); @@ -2087,15 +1758,8 @@ static void assign_std_frame_bits(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { // Clip target size to 0 - max_bits (or cpi->twopass.gf_group_bits) at // the top end. - if (target_frame_size < 0) { - target_frame_size = 0; - } else { - if (target_frame_size > max_bits) - target_frame_size = max_bits; - - if (target_frame_size > cpi->twopass.gf_group_bits) - target_frame_size = (int)cpi->twopass.gf_group_bits; - } + target_frame_size = clamp(target_frame_size, 0, + MIN(max_bits, (int)cpi->twopass.gf_group_bits)); // Adjust error and bits remaining. cpi->twopass.gf_group_error_left -= (int64_t)modified_err; @@ -2104,272 +1768,69 @@ static void assign_std_frame_bits(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { if (cpi->twopass.gf_group_bits < 0) cpi->twopass.gf_group_bits = 0; - // Add in the minimum number of bits that is set aside for every frame. - target_frame_size += cpi->min_frame_bandwidth; - // Per frame bit target for this frame. - cpi->per_frame_bandwidth = target_frame_size; -} - -// Make a damped adjustment to the active max q. -static int adjust_active_maxq(int old_maxqi, int new_maxqi) { - int i; - const double old_q = vp9_convert_qindex_to_q(old_maxqi); - const double new_q = vp9_convert_qindex_to_q(new_maxqi); - const double target_q = ((old_q * 7.0) + new_q) / 8.0; - - if (target_q > old_q) { - for (i = old_maxqi; i <= new_maxqi; i++) - if (vp9_convert_qindex_to_q(i) >= target_q) - return i; - } else { - for (i = old_maxqi; i >= new_maxqi; i--) - if (vp9_convert_qindex_to_q(i) <= target_q) - return i; - } - - return new_maxqi; -} - -void vp9_second_pass(VP9_COMP *cpi) { - int tmp_q; - int frames_left = (int)(cpi->twopass.total_stats.count - - cpi->common.current_video_frame); - - FIRSTPASS_STATS this_frame; - FIRSTPASS_STATS this_frame_copy; - - double this_frame_intra_error; - double this_frame_coded_error; - - if (!cpi->twopass.stats_in) - return; - - vp9_clear_system_state(); - - if (cpi->oxcf.end_usage == USAGE_CONSTANT_QUALITY) { - cpi->active_worst_quality = cpi->oxcf.cq_level; - } else { - // Special case code for first frame. - if (cpi->common.current_video_frame == 0) { - int section_target_bandwidth = - (int)(cpi->twopass.bits_left / frames_left); - cpi->twopass.est_max_qcorrection_factor = 1.0; - - // Set a cq_level in constrained quality mode. - // Commenting this code out for now since it does not seem to be - // working well. - /* - if (cpi->oxcf.end_usage == USAGE_CONSTRAINED_QUALITY) { - int est_cq = estimate_cq(cpi, &cpi->twopass.total_left_stats, - section_target_bandwidth); - - if (est_cq > cpi->cq_target_quality) - cpi->cq_target_quality = est_cq; - else - cpi->cq_target_quality = cpi->oxcf.cq_level; - } - */ - - // guess at maxq needed in 2nd pass - cpi->twopass.maxq_max_limit = cpi->worst_quality; - cpi->twopass.maxq_min_limit = cpi->best_quality; - - tmp_q = estimate_max_q(cpi, &cpi->twopass.total_left_stats, - section_target_bandwidth); - - cpi->active_worst_quality = tmp_q; - cpi->ni_av_qi = tmp_q; - cpi->avg_q = vp9_convert_qindex_to_q(tmp_q); - - // Limit the maxq value returned subsequently. - // This increases the risk of overspend or underspend if the initial - // estimate for the clip is bad, but helps prevent excessive - // variation in Q, especially near the end of a clip - // where for example a small overspend may cause Q to crash - adjust_maxq_qrange(cpi); - } - - // The last few frames of a clip almost always have to few or too many - // bits and for the sake of over exact rate control we dont want to make - // radical adjustments to the allowed quantizer range just to use up a - // few surplus bits or get beneath the target rate. - else if ((cpi->common.current_video_frame < - (((unsigned int)cpi->twopass.total_stats.count * 255) >> 8)) && - ((cpi->common.current_video_frame + cpi->baseline_gf_interval) < - (unsigned int)cpi->twopass.total_stats.count)) { - int section_target_bandwidth = - (int)(cpi->twopass.bits_left / frames_left); - if (frames_left < 1) - frames_left = 1; - - tmp_q = estimate_max_q( - cpi, - &cpi->twopass.total_left_stats, - section_target_bandwidth); - - // Make a damped adjustment to active max Q - cpi->active_worst_quality = - adjust_active_maxq(cpi->active_worst_quality, tmp_q); - } - } - vp9_zero(this_frame); - if (EOF == input_stats(cpi, &this_frame)) - return; - - this_frame_intra_error = this_frame.intra_error; - this_frame_coded_error = this_frame.coded_error; - - // keyframe and section processing ! - if (cpi->twopass.frames_to_key == 0) { - // Define next KF group and assign bits to it - this_frame_copy = this_frame; - find_next_key_frame(cpi, &this_frame_copy); - } - - // Is this a GF / ARF (Note that a KF is always also a GF) - if (cpi->frames_till_gf_update_due == 0) { - // Define next gf group and assign bits to it - this_frame_copy = this_frame; - - cpi->gf_zeromotion_pct = 0; - -#if CONFIG_MULTIPLE_ARF - if (cpi->multi_arf_enabled) { - define_fixed_arf_period(cpi); - } else { -#endif - define_gf_group(cpi, &this_frame_copy); -#if CONFIG_MULTIPLE_ARF - } -#endif - - if (cpi->gf_zeromotion_pct > 995) { - // As long as max_thresh for encode breakout is small enough, it is ok - // to enable it for no-show frame, i.e. set enable_encode_breakout to 2. - if (!cpi->common.show_frame) - cpi->enable_encode_breakout = 0; - else - cpi->enable_encode_breakout = 2; - } - - // If we are going to code an altref frame at the end of the group - // and the current frame is not a key frame.... - // If the previous group used an arf this frame has already benefited - // from that arf boost and it should not be given extra bits - // If the previous group was NOT coded using arf we may want to apply - // some boost to this GF as well - if (cpi->source_alt_ref_pending && (cpi->common.frame_type != KEY_FRAME)) { - // Assign a standard frames worth of bits from those allocated - // to the GF group - int bak = cpi->per_frame_bandwidth; - this_frame_copy = this_frame; - assign_std_frame_bits(cpi, &this_frame_copy); - cpi->per_frame_bandwidth = bak; - } - } else { - // Otherwise this is an ordinary frame - // Assign bits from those allocated to the GF group - this_frame_copy = this_frame; - assign_std_frame_bits(cpi, &this_frame_copy); - } - - // Keep a globally available copy of this and the next frame's iiratio. - cpi->twopass.this_iiratio = (int)(this_frame_intra_error / - DOUBLE_DIVIDE_CHECK(this_frame_coded_error)); - { - FIRSTPASS_STATS next_frame; - if (lookup_next_frame_stats(cpi, &next_frame) != EOF) { - cpi->twopass.next_iiratio = (int)(next_frame.intra_error / - DOUBLE_DIVIDE_CHECK(next_frame.coded_error)); - } - } - - // Set nominal per second bandwidth for this frame - cpi->target_bandwidth = (int)(cpi->per_frame_bandwidth - * cpi->output_framerate); - if (cpi->target_bandwidth < 0) - cpi->target_bandwidth = 0; - - cpi->twopass.frames_to_key--; - - // Update the total stats remaining structure - subtract_stats(&cpi->twopass.total_left_stats, &this_frame); + vp9_rc_set_frame_target(cpi, target_frame_size); } static int test_candidate_kf(VP9_COMP *cpi, - FIRSTPASS_STATS *last_frame, - FIRSTPASS_STATS *this_frame, - FIRSTPASS_STATS *next_frame) { + const FIRSTPASS_STATS *last_frame, + const FIRSTPASS_STATS *this_frame, + const FIRSTPASS_STATS *next_frame) { int is_viable_kf = 0; - // Does the frame satisfy the primary criteria of a key frame - // If so, then examine how well it predicts subsequent frames + // Does the frame satisfy the primary criteria of a key frame? + // If so, then examine how well it predicts subsequent frames. if ((this_frame->pcnt_second_ref < 0.10) && (next_frame->pcnt_second_ref < 0.10) && ((this_frame->pcnt_inter < 0.05) || - (((this_frame->pcnt_inter - this_frame->pcnt_neutral) < .35) && + (((this_frame->pcnt_inter - this_frame->pcnt_neutral) < 0.35) && ((this_frame->intra_error / DOUBLE_DIVIDE_CHECK(this_frame->coded_error)) < 2.5) && ((fabs(last_frame->coded_error - this_frame->coded_error) / - DOUBLE_DIVIDE_CHECK(this_frame->coded_error) > - .40) || + DOUBLE_DIVIDE_CHECK(this_frame->coded_error) > 0.40) || (fabs(last_frame->intra_error - this_frame->intra_error) / - DOUBLE_DIVIDE_CHECK(this_frame->intra_error) > - .40) || + DOUBLE_DIVIDE_CHECK(this_frame->intra_error) > 0.40) || ((next_frame->intra_error / DOUBLE_DIVIDE_CHECK(next_frame->coded_error)) > 3.5))))) { int i; - FIRSTPASS_STATS *start_pos; - - FIRSTPASS_STATS local_next_frame; - + const FIRSTPASS_STATS *start_pos = cpi->twopass.stats_in; + FIRSTPASS_STATS local_next_frame = *next_frame; double boost_score = 0.0; double old_boost_score = 0.0; double decay_accumulator = 1.0; - double next_iiratio; - - local_next_frame = *next_frame; - // Note the starting file position so we can reset to it - start_pos = cpi->twopass.stats_in; - - // Examine how well the key frame predicts subsequent frames - for (i = 0; i < 16; i++) { - next_iiratio = (IIKFACTOR1 * local_next_frame.intra_error / - DOUBLE_DIVIDE_CHECK(local_next_frame.coded_error)); + // Examine how well the key frame predicts subsequent frames. + for (i = 0; i < 16; ++i) { + double next_iiratio = (IIKFACTOR1 * local_next_frame.intra_error / + DOUBLE_DIVIDE_CHECK(local_next_frame.coded_error)); if (next_iiratio > RMAX) next_iiratio = RMAX; - // Cumulative effect of decay in prediction quality + // Cumulative effect of decay in prediction quality. if (local_next_frame.pcnt_inter > 0.85) - decay_accumulator = decay_accumulator * local_next_frame.pcnt_inter; + decay_accumulator *= local_next_frame.pcnt_inter; else - decay_accumulator = - decay_accumulator * ((0.85 + local_next_frame.pcnt_inter) / 2.0); - - // decay_accumulator = decay_accumulator * local_next_frame.pcnt_inter; + decay_accumulator *= (0.85 + local_next_frame.pcnt_inter) / 2.0; - // Keep a running total + // Keep a running total. boost_score += (decay_accumulator * next_iiratio); - // Test various breakout clauses + // Test various breakout clauses. if ((local_next_frame.pcnt_inter < 0.05) || (next_iiratio < 1.5) || (((local_next_frame.pcnt_inter - local_next_frame.pcnt_neutral) < 0.20) && (next_iiratio < 3.0)) || ((boost_score - old_boost_score) < 3.0) || - (local_next_frame.intra_error < 200) - ) { + (local_next_frame.intra_error < 200)) { break; } old_boost_score = boost_score; // Get the next frame details - if (EOF == input_stats(cpi, &local_next_frame)) + if (EOF == input_stats(&cpi->twopass, &local_next_frame)) break; } @@ -2379,7 +1840,7 @@ static int test_candidate_kf(VP9_COMP *cpi, is_viable_kf = 1; } else { // Reset the file position - reset_fpf_position(cpi, start_pos); + reset_fpf_position(&cpi->twopass, start_pos); is_viable_kf = 0; } @@ -2387,12 +1848,13 @@ static int test_candidate_kf(VP9_COMP *cpi, return is_viable_kf; } + static void find_next_key_frame(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { int i, j; FIRSTPASS_STATS last_frame; FIRSTPASS_STATS first_frame; FIRSTPASS_STATS next_frame; - FIRSTPASS_STATS *start_position; + const FIRSTPASS_STATS *start_position; double decay_accumulator = 1.0; double zero_motion_accumulator = 1.0; @@ -2401,177 +1863,156 @@ static void find_next_key_frame(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { double kf_mod_err = 0.0; double kf_group_err = 0.0; - double kf_group_intra_err = 0.0; - double kf_group_coded_err = 0.0; double recent_loop_decay[8] = {1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0}; + RATE_CONTROL *const rc = &cpi->rc; + struct twopass_rc *const twopass = &cpi->twopass; + vp9_zero(next_frame); - vp9_clear_system_state(); // __asm emms; - start_position = cpi->twopass.stats_in; + vp9_clear_system_state(); + start_position = twopass->stats_in; cpi->common.frame_type = KEY_FRAME; - // is this a forced key frame by interval - cpi->this_key_frame_forced = cpi->next_key_frame_forced; + // Is this a forced key frame by interval. + rc->this_key_frame_forced = rc->next_key_frame_forced; - // Clear the alt ref active flag as this can never be active on a key frame - cpi->source_alt_ref_active = 0; + // Clear the alt ref active flag as this can never be active on a key frame. + rc->source_alt_ref_active = 0; - // Kf is always a gf so clear frames till next gf counter - cpi->frames_till_gf_update_due = 0; + // KF is always a GF so clear frames till next gf counter. + rc->frames_till_gf_update_due = 0; - cpi->twopass.frames_to_key = 1; + rc->frames_to_key = 1; - // Take a copy of the initial frame details + // Take a copy of the initial frame details. first_frame = *this_frame; - cpi->twopass.kf_group_bits = 0; // Total bits available to kf group - cpi->twopass.kf_group_error_left = 0; // Group modified error score. + twopass->kf_group_bits = 0; // Total bits available to kf group + twopass->kf_group_error_left = 0; // Group modified error score. kf_mod_err = calculate_modified_err(cpi, this_frame); - // find the next keyframe + // Find the next keyframe. i = 0; - while (cpi->twopass.stats_in < cpi->twopass.stats_in_end) { - // Accumulate kf group error + while (twopass->stats_in < twopass->stats_in_end) { + // Accumulate kf group error. kf_group_err += calculate_modified_err(cpi, this_frame); - // These figures keep intra and coded error counts for all frames including - // key frames in the group. The effect of the key frame itself can be - // subtracted out using the first_frame data collected above. - kf_group_intra_err += this_frame->intra_error; - kf_group_coded_err += this_frame->coded_error; - - // load a the next frame's stats + // Load the next frame's stats. last_frame = *this_frame; - input_stats(cpi, this_frame); + input_stats(twopass, this_frame); // Provided that we are not at the end of the file... - if (cpi->oxcf.auto_key - && lookup_next_frame_stats(cpi, &next_frame) != EOF) { - // Normal scene cut check + if (cpi->oxcf.auto_key && + lookup_next_frame_stats(twopass, &next_frame) != EOF) { + // Check for a scene cut. if (test_candidate_kf(cpi, &last_frame, this_frame, &next_frame)) break; - - // How fast is prediction quality decaying - loop_decay_rate = get_prediction_decay_rate(cpi, &next_frame); + // How fast is the prediction quality decaying? + loop_decay_rate = get_prediction_decay_rate(&cpi->common, &next_frame); // We want to know something about the recent past... rather than - // as used elsewhere where we are concened with decay in prediction + // as used elsewhere where we are concerned with decay in prediction // quality since the last GF or KF. recent_loop_decay[i % 8] = loop_decay_rate; decay_accumulator = 1.0; - for (j = 0; j < 8; j++) + for (j = 0; j < 8; ++j) decay_accumulator *= recent_loop_decay[j]; // Special check for transition or high motion followed by a - // to a static scene. + // static scene. if (detect_transition_to_still(cpi, i, cpi->key_frame_frequency - i, loop_decay_rate, decay_accumulator)) break; - // Step on to the next frame - cpi->twopass.frames_to_key++; + // Step on to the next frame. + ++rc->frames_to_key; // If we don't have a real key frame within the next two - // forcekeyframeevery intervals then break out of the loop. - if (cpi->twopass.frames_to_key >= 2 * (int)cpi->key_frame_frequency) + // key_frame_frequency intervals then break out of the loop. + if (rc->frames_to_key >= 2 * (int)cpi->key_frame_frequency) break; } else { - cpi->twopass.frames_to_key++; + ++rc->frames_to_key; } - i++; + ++i; } // If there is a max kf interval set by the user we must obey it. // We already breakout of the loop above at 2x max. - // This code centers the extra kf if the actual natural - // interval is between 1x and 2x - if (cpi->oxcf.auto_key - && cpi->twopass.frames_to_key > (int)cpi->key_frame_frequency) { - FIRSTPASS_STATS *current_pos = cpi->twopass.stats_in; + // This code centers the extra kf if the actual natural interval + // is between 1x and 2x. + if (cpi->oxcf.auto_key && + rc->frames_to_key > (int)cpi->key_frame_frequency) { FIRSTPASS_STATS tmp_frame; - cpi->twopass.frames_to_key /= 2; + rc->frames_to_key /= 2; - // Copy first frame details + // Copy first frame details. tmp_frame = first_frame; - // Reset to the start of the group - reset_fpf_position(cpi, start_position); + // Reset to the start of the group. + reset_fpf_position(twopass, start_position); kf_group_err = 0; - kf_group_intra_err = 0; - kf_group_coded_err = 0; - // Rescan to get the correct error data for the forced kf group - for (i = 0; i < cpi->twopass.frames_to_key; i++) { - // Accumulate kf group errors + // Rescan to get the correct error data for the forced kf group. + for (i = 0; i < rc->frames_to_key; ++i) { + // Accumulate kf group errors. kf_group_err += calculate_modified_err(cpi, &tmp_frame); - kf_group_intra_err += tmp_frame.intra_error; - kf_group_coded_err += tmp_frame.coded_error; - // Load a the next frame's stats - input_stats(cpi, &tmp_frame); + // Load the next frame's stats. + input_stats(twopass, &tmp_frame); } - - // Reset to the start of the group - reset_fpf_position(cpi, current_pos); - - cpi->next_key_frame_forced = 1; + rc->next_key_frame_forced = 1; + } else if (twopass->stats_in == twopass->stats_in_end) { + rc->next_key_frame_forced = 1; } else { - cpi->next_key_frame_forced = 0; + rc->next_key_frame_forced = 0; } - // Special case for the last frame of the file - if (cpi->twopass.stats_in >= cpi->twopass.stats_in_end) { - // Accumulate kf group error - kf_group_err += calculate_modified_err(cpi, this_frame); - // These figures keep intra and coded error counts for all frames including - // key frames in the group. The effect of the key frame itself can be - // subtracted out using the first_frame data collected above. - kf_group_intra_err += this_frame->intra_error; - kf_group_coded_err += this_frame->coded_error; + // Special case for the last key frame of the file. + if (twopass->stats_in >= twopass->stats_in_end) { + // Accumulate kf group error. + kf_group_err += calculate_modified_err(cpi, this_frame); } // Calculate the number of bits that should be assigned to the kf group. - if ((cpi->twopass.bits_left > 0) && - (cpi->twopass.modified_error_left > 0.0)) { - // Max for a single normal frame (not key frame) + if (twopass->bits_left > 0 && twopass->modified_error_left > 0.0) { + // Maximum number of bits for a single normal frame (not key frame). int max_bits = frame_max_bits(cpi); - // Maximum bits for the kf group + // Maximum number of bits allocated to the key frame group. int64_t max_grp_bits; // Default allocation based on bits left and relative - // complexity of the section - cpi->twopass.kf_group_bits = (int64_t)(cpi->twopass.bits_left * - (kf_group_err / - cpi->twopass.modified_error_left)); + // complexity of the section. + twopass->kf_group_bits = (int64_t)(twopass->bits_left * + (kf_group_err / twopass->modified_error_left)); // Clip based on maximum per frame rate defined by the user. - max_grp_bits = (int64_t)max_bits * (int64_t)cpi->twopass.frames_to_key; - if (cpi->twopass.kf_group_bits > max_grp_bits) - cpi->twopass.kf_group_bits = max_grp_bits; + max_grp_bits = (int64_t)max_bits * (int64_t)rc->frames_to_key; + if (twopass->kf_group_bits > max_grp_bits) + twopass->kf_group_bits = max_grp_bits; } else { - cpi->twopass.kf_group_bits = 0; + twopass->kf_group_bits = 0; } - // Reset the first pass file position - reset_fpf_position(cpi, start_position); + // Reset the first pass file position. + reset_fpf_position(twopass, start_position); // Determine how big to make this keyframe based on how well the subsequent // frames use inter blocks. decay_accumulator = 1.0; boost_score = 0.0; - loop_decay_rate = 1.00; // Starting decay rate // Scan through the kf group collating various stats. - for (i = 0; i < cpi->twopass.frames_to_key; i++) { + for (i = 0; i < rc->frames_to_key; ++i) { double r; - if (EOF == input_stats(cpi, &next_frame)) + if (EOF == input_stats(twopass, &next_frame)) break; // Monitor for static sections. @@ -2582,21 +2023,21 @@ static void find_next_key_frame(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { } // For the first few frames collect data to decide kf boost. - if (i <= (cpi->max_gf_interval * 2)) { - if (next_frame.intra_error > cpi->twopass.kf_intra_err_min) + if (i <= (rc->max_gf_interval * 2)) { + if (next_frame.intra_error > twopass->kf_intra_err_min) r = (IIKFACTOR2 * next_frame.intra_error / DOUBLE_DIVIDE_CHECK(next_frame.coded_error)); else - r = (IIKFACTOR2 * cpi->twopass.kf_intra_err_min / + r = (IIKFACTOR2 * twopass->kf_intra_err_min / DOUBLE_DIVIDE_CHECK(next_frame.coded_error)); if (r > RMAX) r = RMAX; - // How fast is prediction quality decaying - if (!detect_flash(cpi, 0)) { - loop_decay_rate = get_prediction_decay_rate(cpi, &next_frame); - decay_accumulator = decay_accumulator * loop_decay_rate; + // How fast is prediction quality decaying. + if (!detect_flash(twopass, 0)) { + loop_decay_rate = get_prediction_decay_rate(&cpi->common, &next_frame); + decay_accumulator *= loop_decay_rate; decay_accumulator = decay_accumulator < MIN_DECAY_FACTOR ? MIN_DECAY_FACTOR : decay_accumulator; } @@ -2609,121 +2050,249 @@ static void find_next_key_frame(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) { FIRSTPASS_STATS sectionstats; zero_stats(§ionstats); - reset_fpf_position(cpi, start_position); + reset_fpf_position(twopass, start_position); - for (i = 0; i < cpi->twopass.frames_to_key; i++) { - input_stats(cpi, &next_frame); + for (i = 0; i < rc->frames_to_key; ++i) { + input_stats(twopass, &next_frame); accumulate_stats(§ionstats, &next_frame); } avg_stats(§ionstats); - cpi->twopass.section_intra_rating = (int) - (sectionstats.intra_error - / DOUBLE_DIVIDE_CHECK(sectionstats.coded_error)); + twopass->section_intra_rating = (int) (sectionstats.intra_error / + DOUBLE_DIVIDE_CHECK(sectionstats.coded_error)); } - // Reset the first pass file position - reset_fpf_position(cpi, start_position); + // Reset the first pass file position. + reset_fpf_position(twopass, start_position); - // Work out how many bits to allocate for the key frame itself + // Work out how many bits to allocate for the key frame itself. if (1) { int kf_boost = (int)boost_score; int allocation_chunks; int alt_kf_bits; - if (kf_boost < (cpi->twopass.frames_to_key * 3)) - kf_boost = (cpi->twopass.frames_to_key * 3); + if (kf_boost < (rc->frames_to_key * 3)) + kf_boost = (rc->frames_to_key * 3); - if (kf_boost < 300) // Min KF boost - kf_boost = 300; + if (kf_boost < MIN_KF_BOOST) + kf_boost = MIN_KF_BOOST; // Make a note of baseline boost and the zero motion // accumulator value for use elsewhere. - cpi->kf_boost = kf_boost; - cpi->kf_zeromotion_pct = (int)(zero_motion_accumulator * 100.0); - - // We do three calculations for kf size. - // The first is based on the error score for the whole kf group. - // The second (optionaly) on the key frames own error if this is - // smaller than the average for the group. - // The final one insures that the frame receives at least the - // allocation it would have received based on its own error score vs - // the error score remaining - // Special case if the sequence appears almost totaly static - // In this case we want to spend almost all of the bits on the - // key frame. - // cpi->twopass.frames_to_key-1 because key frame itself is taken - // care of by kf_boost. + rc->kf_boost = kf_boost; + twopass->kf_zeromotion_pct = (int)(zero_motion_accumulator * 100.0); + + // Key frame size depends on: + // (1) the error score for the whole key frame group, + // (2) the key frames' own error if this is smaller than the + // average for the group (optional), + // (3) insuring that the frame receives at least the allocation it would + // have received based on its own error score vs the error score + // remaining. + // Special case: + // If the sequence appears almost totally static we want to spend almost + // all of the bits on the key frame. + // + // We use (cpi->rc.frames_to_key - 1) below because the key frame itself is + // taken care of by kf_boost. if (zero_motion_accumulator >= 0.99) { - allocation_chunks = - ((cpi->twopass.frames_to_key - 1) * 10) + kf_boost; + allocation_chunks = ((rc->frames_to_key - 1) * 10) + kf_boost; } else { - allocation_chunks = - ((cpi->twopass.frames_to_key - 1) * 100) + kf_boost; + allocation_chunks = ((rc->frames_to_key - 1) * 100) + kf_boost; } - // Prevent overflow + // Prevent overflow. if (kf_boost > 1028) { int divisor = kf_boost >> 10; kf_boost /= divisor; allocation_chunks /= divisor; } - cpi->twopass.kf_group_bits = - (cpi->twopass.kf_group_bits < 0) ? 0 : cpi->twopass.kf_group_bits; + twopass->kf_group_bits = (twopass->kf_group_bits < 0) ? 0 + : twopass->kf_group_bits; - // Calculate the number of bits to be spent on the key frame - cpi->twopass.kf_bits = - (int)((double)kf_boost * - ((double)cpi->twopass.kf_group_bits / (double)allocation_chunks)); + // Calculate the number of bits to be spent on the key frame. + twopass->kf_bits = (int)((double)kf_boost * + ((double)twopass->kf_group_bits / allocation_chunks)); // If the key frame is actually easier than the average for the - // kf group (which does sometimes happen... eg a blank intro frame) - // Then use an alternate calculation based on the kf error score + // kf group (which does sometimes happen, e.g. a blank intro frame) + // then use an alternate calculation based on the kf error score // which should give a smaller key frame. - if (kf_mod_err < kf_group_err / cpi->twopass.frames_to_key) { - double alt_kf_grp_bits = - ((double)cpi->twopass.bits_left * - (kf_mod_err * (double)cpi->twopass.frames_to_key) / - DOUBLE_DIVIDE_CHECK(cpi->twopass.modified_error_left)); + if (kf_mod_err < kf_group_err / rc->frames_to_key) { + double alt_kf_grp_bits = ((double)twopass->bits_left * + (kf_mod_err * (double)rc->frames_to_key) / + DOUBLE_DIVIDE_CHECK(twopass->modified_error_left)); alt_kf_bits = (int)((double)kf_boost * (alt_kf_grp_bits / (double)allocation_chunks)); - if (cpi->twopass.kf_bits > alt_kf_bits) { - cpi->twopass.kf_bits = alt_kf_bits; - } + if (twopass->kf_bits > alt_kf_bits) + twopass->kf_bits = alt_kf_bits; } else { - // Else if it is much harder than other frames in the group make sure - // it at least receives an allocation in keeping with its relative - // error score - alt_kf_bits = - (int)((double)cpi->twopass.bits_left * - (kf_mod_err / - DOUBLE_DIVIDE_CHECK(cpi->twopass.modified_error_left))); - - if (alt_kf_bits > cpi->twopass.kf_bits) { - cpi->twopass.kf_bits = alt_kf_bits; + // Else if it is much harder than other frames in the group make sure + // it at least receives an allocation in keeping with its relative + // error score. + alt_kf_bits = (int)((double)twopass->bits_left * (kf_mod_err / + DOUBLE_DIVIDE_CHECK(twopass->modified_error_left))); + + if (alt_kf_bits > twopass->kf_bits) { + twopass->kf_bits = alt_kf_bits; } } - - cpi->twopass.kf_group_bits -= cpi->twopass.kf_bits; - // Add in the minimum frame allowance - cpi->twopass.kf_bits += cpi->min_frame_bandwidth; - - // Peer frame bit target for this frame - cpi->per_frame_bandwidth = cpi->twopass.kf_bits; - // Convert to a per second bitrate - cpi->target_bandwidth = (int)(cpi->twopass.kf_bits * - cpi->output_framerate); + twopass->kf_group_bits -= twopass->kf_bits; + // Per frame bit target for this frame. + vp9_rc_set_frame_target(cpi, twopass->kf_bits); } - // Note the total error score of the kf group minus the key frame itself - cpi->twopass.kf_group_error_left = (int)(kf_group_err - kf_mod_err); + // Note the total error score of the kf group minus the key frame itself. + twopass->kf_group_error_left = (int)(kf_group_err - kf_mod_err); // Adjust the count of total modified error left. // The count of bits left is adjusted elsewhere based on real coded frame // sizes. - cpi->twopass.modified_error_left -= kf_group_err; + twopass->modified_error_left -= kf_group_err; +} + +void vp9_rc_get_first_pass_params(VP9_COMP *cpi) { + VP9_COMMON *const cm = &cpi->common; + if (!cpi->refresh_alt_ref_frame && + (cm->current_video_frame == 0 || + cm->frame_flags & FRAMEFLAGS_KEY)) { + cm->frame_type = KEY_FRAME; + } else { + cm->frame_type = INTER_FRAME; + } + // Do not use periodic key frames. + cpi->rc.frames_to_key = INT_MAX; +} + +void vp9_rc_get_second_pass_params(VP9_COMP *cpi) { + VP9_COMMON *const cm = &cpi->common; + RATE_CONTROL *const rc = &cpi->rc; + struct twopass_rc *const twopass = &cpi->twopass; + const int frames_left = (int)(twopass->total_stats.count - + cm->current_video_frame); + FIRSTPASS_STATS this_frame; + FIRSTPASS_STATS this_frame_copy; + + double this_frame_intra_error; + double this_frame_coded_error; + int target; + + if (!twopass->stats_in) + return; + + if (cpi->refresh_alt_ref_frame) { + cm->frame_type = INTER_FRAME; + vp9_rc_set_frame_target(cpi, twopass->gf_bits); + return; + } + + vp9_clear_system_state(); + + if (cpi->oxcf.end_usage == USAGE_CONSTANT_QUALITY) { + twopass->active_worst_quality = cpi->oxcf.cq_level; + } else if (cm->current_video_frame == 0) { + // Special case code for first frame. + const int section_target_bandwidth = (int)(twopass->bits_left / + frames_left); + const int tmp_q = vp9_twopass_worst_quality(cpi, &twopass->total_left_stats, + section_target_bandwidth); + twopass->active_worst_quality = tmp_q; + rc->ni_av_qi = tmp_q; + rc->avg_q = vp9_convert_qindex_to_q(tmp_q); + } + vp9_zero(this_frame); + if (EOF == input_stats(twopass, &this_frame)) + return; + + this_frame_intra_error = this_frame.intra_error; + this_frame_coded_error = this_frame.coded_error; + + // Keyframe and section processing. + if (rc->frames_to_key == 0 || + (cm->frame_flags & FRAMEFLAGS_KEY)) { + // Define next KF group and assign bits to it. + this_frame_copy = this_frame; + find_next_key_frame(cpi, &this_frame_copy); + } else { + cm->frame_type = INTER_FRAME; + } + + // Is this frame a GF / ARF? (Note: a key frame is always also a GF). + if (rc->frames_till_gf_update_due == 0) { + // Define next gf group and assign bits to it. + this_frame_copy = this_frame; + +#if CONFIG_MULTIPLE_ARF + if (cpi->multi_arf_enabled) { + define_fixed_arf_period(cpi); + } else { +#endif + define_gf_group(cpi, &this_frame_copy); +#if CONFIG_MULTIPLE_ARF + } +#endif + + if (twopass->gf_zeromotion_pct > 995) { + // As long as max_thresh for encode breakout is small enough, it is ok + // to enable it for show frame, i.e. set allow_encode_breakout to + // ENCODE_BREAKOUT_LIMITED. + if (!cm->show_frame) + cpi->allow_encode_breakout = ENCODE_BREAKOUT_DISABLED; + else + cpi->allow_encode_breakout = ENCODE_BREAKOUT_LIMITED; + } + + rc->frames_till_gf_update_due = rc->baseline_gf_interval; + cpi->refresh_golden_frame = 1; + } else { + // Otherwise this is an ordinary frame. + // Assign bits from those allocated to the GF group. + this_frame_copy = this_frame; + assign_std_frame_bits(cpi, &this_frame_copy); + } + + // Keep a globally available copy of this and the next frame's iiratio. + twopass->this_iiratio = (int)(this_frame_intra_error / + DOUBLE_DIVIDE_CHECK(this_frame_coded_error)); + { + FIRSTPASS_STATS next_frame; + if (lookup_next_frame_stats(twopass, &next_frame) != EOF) { + twopass->next_iiratio = (int)(next_frame.intra_error / + DOUBLE_DIVIDE_CHECK(next_frame.coded_error)); + } + } + + if (cpi->common.frame_type == KEY_FRAME) + target = vp9_rc_clamp_iframe_target_size(cpi, rc->this_frame_target); + else + target = vp9_rc_clamp_pframe_target_size(cpi, rc->this_frame_target); + vp9_rc_set_frame_target(cpi, target); + + // Update the total stats remaining structure. + subtract_stats(&twopass->total_left_stats, &this_frame); +} + +void vp9_twopass_postencode_update(VP9_COMP *cpi, uint64_t bytes_used) { +#ifdef DISABLE_RC_LONG_TERM_MEM + cpi->twopass.bits_left -= cpi->rc.this_frame_target; +#else + cpi->twopass.bits_left -= 8 * bytes_used; + // Update bits left to the kf and gf groups to account for overshoot or + // undershoot on these frames. + if (cm->frame_type == KEY_FRAME) { + cpi->twopass.kf_group_bits += cpi->rc.this_frame_target - + cpi->rc.projected_frame_size; + + cpi->twopass.kf_group_bits = MAX(cpi->twopass.kf_group_bits, 0); + } else if (cpi->refresh_golden_frame || cpi->refresh_alt_ref_frame) { + cpi->twopass.gf_group_bits += cpi->rc.this_frame_target - + cpi->rc.projected_frame_size; + + cpi->twopass.gf_group_bits = MAX(cpi->twopass.gf_group_bits, 0); + } +#endif } |