Initial version

Change-Id: I5a9473876e596e7461e91f971b0243f694f7e8fb

1 files changed, 292 insertions, 0 deletions

diff --git a/decoder/impeg2d_decoder.c b/decoder/impeg2d_decoder.c
new file mode 100755
index 0000000..ae58675
--- /dev/null
+++ b/decoder/impeg2d_decoder.c
@@ -0,0 +1,292 @@
+/******************************************************************************
+ *
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ *****************************************************************************
+ * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
+*/
+/*****************************************************************************/
+/*                                                                           */
+/*  File Name         : mpeg2dec_api_utils.c                                 */
+/*                                                                           */
+/*                                                                           */
+/*  Description       : This file defines the API interface for MPEG2 Decoder*/
+/*                                                                           */
+/*  List of Functions : <List the functions defined in this file>            */
+/*                                                                           */
+/*  Issues / Problems : None                                                 */
+/*                                                                           */
+/*  Revision History  :                                                      */
+/*                                                                           */
+/*         DD MM YYYY   Author(s)       Changes (Describe the changes made)  */
+/*         17 09 2007  Rajendra C Y       Creation                           */
+/*                                                                           */
+/*****************************************************************************/
+
+/*****************************************************************************/
+/* File Includes                                                             */
+/*****************************************************************************/
+/* System include files */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+
+/* User include files */
+#include "iv_datatypedef.h"
+#include "iv.h"
+#include "ivd.h"
+#include "ithread.h"
+
+#include "impeg2_job_queue.h"
+#include "impeg2_macros.h"
+#include "impeg2_buf_mgr.h"
+#include "impeg2_disp_mgr.h"
+#include "impeg2_defs.h"
+#include "impeg2_platform_macros.h"
+#include "impeg2_inter_pred.h"
+#include "impeg2_idct.h"
+#include "impeg2_format_conv.h"
+#include "impeg2_mem_func.h"
+
+#include "impeg2d.h"
+#include "impeg2d_api.h"
+#include "impeg2d_bitstream.h"
+#include "impeg2d_debug.h"
+#include "impeg2d_structs.h"
+#include "impeg2d_mc.h"
+#include "impeg2d_pic_proc.h"
+#include "impeg2d_dec_hdr.h"
+
+void impeg2d_next_start_code(dec_state_t *ps_dec);
+void impeg2d_next_code(dec_state_t *ps_dec, UWORD32 u4_start_code_val);
+
+/*****************************************************************************/
+/*                                                                           */
+/*  Function Name : impeg2d_dec_hdr                                      */
+/*                                                                           */
+/*  Description   :                                                          */
+/*  Inputs        :                                                          */
+/*  Globals       :                                                          */
+/*  Processing    :                                                          */
+/*  Outputs       :                                                          */
+/*  Returns       :                                                          */
+/*                                                                           */
+/*  Issues        :                                                          */
+/*                                                                           */
+/*  Revision History:                                                        */
+/*                                                                           */
+/*         DD MM YYYY   Author(s)       Changes (Describe the changes made)  */
+/*         17 09 2007  Rajendra C Y          Draft                           */
+/*                                                                           */
+/*****************************************************************************/
+void impeg2d_dec_hdr(void *pv_dec,impeg2d_video_decode_ip_t *ps_ip,
+                 impeg2d_video_decode_op_t *ps_op)
+{
+
+    UWORD32 u4_bits_read;
+    dec_state_t *ps_dec;
+
+    ps_dec = (dec_state_t *)pv_dec;
+    ps_op->s_ivd_video_decode_op_t.u4_error_code = 0;
+
+    impeg2d_bit_stream_init(&(ps_dec->s_bit_stream),ps_ip->s_ivd_video_decode_ip_t.pv_stream_buffer,
+        ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes);
+
+    {
+        {
+            IMPEG2D_ERROR_CODES_T e_error;
+            e_error = impeg2d_process_video_header(ps_dec);
+            if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
+            {
+                ps_op->s_ivd_video_decode_op_t.u4_error_code    = e_error;
+
+                u4_bits_read     = impeg2d_bit_stream_num_bits_read(&ps_dec->s_bit_stream);
+
+                ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = u4_bits_read>> 3;
+                if(ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed > ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes)
+                {
+                    ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
+                }
+                if(ps_op->s_ivd_video_decode_op_t.u4_error_code == 0)
+                    ps_op->s_ivd_video_decode_op_t.u4_error_code = e_error;
+
+
+                impeg2d_next_code(ps_dec, SEQUENCE_HEADER_CODE);
+                return;
+            }
+        }
+        ps_op->s_ivd_video_decode_op_t.u4_pic_ht = ps_dec->u2_vertical_size;
+        ps_op->s_ivd_video_decode_op_t.u4_pic_wd = ps_dec->u2_horizontal_size;
+
+        ps_op->s_ivd_video_decode_op_t.e_pic_type            = IV_NA_FRAME;
+        ps_op->s_ivd_video_decode_op_t.u4_error_code        = IV_SUCCESS;
+
+        u4_bits_read     = impeg2d_bit_stream_num_bits_read(&ps_dec->s_bit_stream);
+        ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = u4_bits_read>> 3;
+        if(ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed > ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes)
+        {
+            ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
+        }
+        ps_op->s_ivd_video_decode_op_t.u4_frame_decoded_flag = 0;
+        /* MOD */
+        ps_dec->u2_header_done = 1;
+        ps_dec->u2_decode_header = 0;
+
+    }
+}
+
+/*****************************************************************************/
+/*                                                                           */
+/*  Function Name : impeg2d_dec_frm                                         */
+/*                                                                           */
+/*  Description   :                                                          */
+/*  Inputs        :                                                          */
+/*  Globals       :                                                          */
+/*  Processing    :                                                          */
+/*  Outputs       :                                                          */
+/*  Returns       :                                                          */
+/*                                                                           */
+/*  Issues        :                                                          */
+/*                                                                           */
+/*  Revision History:                                                        */
+/*                                                                           */
+/*         DD MM YYYY   Author(s)       Changes (Describe the changes made)  */
+/*         17 09 2007  Rajendra C Y          Draft                           */
+/*                                                                           */
+/*****************************************************************************/
+void impeg2d_dec_frm(void *pv_dec,impeg2d_video_decode_ip_t *ps_ip,
+                 impeg2d_video_decode_op_t *ps_op)
+{
+
+
+    stream_t *ps_stream;
+    UWORD32 u4_size = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
+
+    dec_state_t *ps_dec;
+
+    ps_dec = (dec_state_t *)pv_dec;
+    ps_op->s_ivd_video_decode_op_t.u4_error_code = 0;
+
+    IMPEG2D_FRM_NUM_SET();
+
+    ps_dec->pu1_inp_bits_buf = ps_ip->s_ivd_video_decode_ip_t.pv_stream_buffer;
+    ps_dec->u4_num_inp_bytes = u4_size;
+    ps_stream  = &ps_dec->s_bit_stream;
+
+
+    impeg2d_bit_stream_init(ps_stream,ps_ip->s_ivd_video_decode_ip_t.pv_stream_buffer,u4_size);
+
+    /* @ */ /* Updating the bufferID */
+
+    ps_dec->u4_xdmBufID     = ps_ip->s_ivd_video_decode_ip_t.u4_ts;
+
+    {
+        IMPEG2D_ERROR_CODES_T e_error;
+        /* Process the Bitstream */
+        e_error = impeg2d_process_video_bit_stream(ps_dec);
+        if ((IMPEG2D_ERROR_CODES_T)IVD_ERROR_NONE != e_error)
+        {
+            ps_op->s_ivd_video_decode_op_t.u4_error_code    = e_error;
+
+            if ((IMPEG2D_ERROR_CODES_T) IVD_RES_CHANGED == e_error)
+            {
+                ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = 0;
+                ps_dec->u2_header_done = 0;
+            }
+            else if (IMPEG2D_UNSUPPORTED_DIMENSIONS == e_error)
+            {
+                ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = 0;
+                ps_dec->u2_header_done = 0;
+
+                ps_op->s_ivd_video_decode_op_t.u4_pic_ht = ps_dec->u2_reinit_max_height;
+                ps_op->s_ivd_video_decode_op_t.u4_pic_wd = ps_dec->u2_reinit_max_width;
+            }
+            else
+            {
+                if(ps_dec->i4_num_cores > 1)
+                    ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_dec->i4_bytes_consumed;
+                else
+                {
+                    ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = (ps_dec->s_bit_stream.u4_offset + 7) >> 3;
+                    ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed -= ((size_t)ps_dec->s_bit_stream.pv_bs_buf & 3);
+                }
+
+                if(ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed
+                                > ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes)
+                {
+                    ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed =
+                                    ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
+                }
+
+                impeg2d_next_start_code(ps_dec);
+            }
+
+            if(ps_op->s_ivd_video_decode_op_t.u4_error_code == 0)
+            {
+                ps_op->s_ivd_video_decode_op_t.u4_error_code = e_error;
+            }
+
+            return;
+        }
+    }
+    /**************************************************************************/
+    /* Remove the bytes left till next start code is encountered              */
+    /**************************************************************************/
+    ps_op->s_ivd_video_decode_op_t.u4_error_code  = IV_SUCCESS;
+
+    if(ps_dec->i4_num_cores > 1)
+        ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_dec->i4_bytes_consumed;
+    else
+    {
+        ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = (ps_dec->s_bit_stream.u4_offset + 7) >> 3;
+        ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed -= ((size_t)ps_dec->s_bit_stream.pv_bs_buf & 3);
+    }
+    if(ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed > ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes)
+    {
+        ps_op->s_ivd_video_decode_op_t.u4_num_bytes_consumed = ps_ip->s_ivd_video_decode_ip_t.u4_num_Bytes;
+    }
+    ps_op->s_ivd_video_decode_op_t.u4_pic_ht = ps_dec->u2_vertical_size;
+    ps_op->s_ivd_video_decode_op_t.u4_pic_wd = ps_dec->u2_horizontal_size;
+
+        switch(ps_dec->e_pic_type)
+        {
+        case I_PIC :
+            ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_I_FRAME;
+            break;
+
+        case P_PIC:
+            ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_P_FRAME;
+            break;
+
+        case B_PIC:
+            ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_B_FRAME;
+            break;
+
+        case D_PIC:
+            ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_I_FRAME;
+            break;
+
+        default :
+            ps_op->s_ivd_video_decode_op_t.e_pic_type = IV_FRAMETYPE_DEFAULT;
+            break;
+        }
+
+        ps_op->s_ivd_video_decode_op_t.u4_frame_decoded_flag = ps_dec->i4_frame_decoded;
+        ps_op->s_ivd_video_decode_op_t.u4_new_seq = 0;
+        ps_op->s_ivd_video_decode_op_t.u4_error_code = ps_dec->u4_error_code;
+
+
+}