smdk4412: add opensource camera hal

Change-Id: Icb555cc6158247c32a6feb5d846bcf4d727749af

1 files changed, 387 insertions, 0 deletions

diff --git a/camera/exynos_v4l2_output.c b/camera/exynos_v4l2_output.c
new file mode 100644
index 0000000..2a39fd2
--- /dev/null
+++ b/camera/exynos_v4l2_output.c
@@ -0,0 +1,387 @@
+/*
+ * Copyright (C) 2013 Paul Kocialkowski
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <malloc.h>
+#include <poll.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+
+#include <asm/types.h>
+
+#define LOG_TAG "exynos_v4l2_output"
+#include <utils/Log.h>
+
+#include "exynos_camera.h"
+
+int exynos_v4l2_output_start(struct exynos_camera *exynos_camera,
+	struct exynos_v4l2_output *output)
+{
+	int width, height, format;
+	int buffer_width, buffer_height, buffer_format;
+	camera_memory_t *memory = NULL;
+	int memory_address, memory_size;
+#ifdef EXYNOS_ION
+	int memory_ion_fd = -1;
+#endif
+	int buffers_count, buffer_length;
+	int v4l2_id;
+	int value;
+	int fd;
+	int rc;
+	int i;
+
+	if (exynos_camera == NULL || output == NULL)
+		return -EINVAL;
+
+//	ALOGD("%s()", __func__);
+
+	if (output->enabled) {
+		ALOGE("Output was already started");
+		return -1;
+	}
+
+	width = output->width;
+	height = output->height;
+	format = output->format;
+
+	buffer_width = output->buffer_width;
+	buffer_height = output->buffer_height;
+	buffer_format = output->buffer_format;
+
+	v4l2_id = output->v4l2_id;
+
+	buffers_count = output->buffers_count;
+	if (buffers_count <= 0) {
+		ALOGE("%s: Invalid buffers count: %d", __func__, buffers_count);
+		goto error;
+	}
+
+	buffer_length = exynos_camera_buffer_length(width, height, format);
+
+	rc = exynos_v4l2_open(exynos_camera, v4l2_id);
+	if (rc < 0) {
+		ALOGE("%s: Unable to open v4l2 device", __func__);
+		goto error;
+	}
+
+	rc = exynos_v4l2_querycap_out(exynos_camera, v4l2_id);
+	if (rc < 0) {
+		ALOGE("%s: Unable to query capabilities", __func__);
+		goto error;
+	}
+
+	rc = exynos_v4l2_g_fmt_out(exynos_camera, v4l2_id, NULL, NULL, NULL);
+	if (rc < 0) {
+		ALOGE("%s: Unable to get format", __func__);
+		goto error;
+	}
+
+	value = 0;
+	rc = exynos_v4l2_g_ctrl(exynos_camera, v4l2_id, V4L2_CID_RESERVED_MEM_BASE_ADDR, &value);
+	if (rc < 0) {
+		ALOGE("%s: Unable to get address", __func__);
+		goto error;
+	}
+
+	memory_address = value;
+
+	value = 0;
+	rc = exynos_v4l2_g_ctrl(exynos_camera, v4l2_id, V4L2_CID_RESERVED_MEM_SIZE, &value);
+	if (rc < 0) {
+		ALOGE("%s: Unable to get size", __func__);
+		goto error;
+	}
+
+	memory_size = value * 1024;
+
+	rc = exynos_v4l2_s_ctrl(exynos_camera, v4l2_id, V4L2_CID_OVLY_MODE, FIMC_OVLY_NONE_MULTI_BUF);
+	if (rc < 0) {
+		ALOGE("%s: Unable to set overlay mode", __func__);
+		goto error;
+	}
+
+	rc = exynos_v4l2_s_fmt_pix_out(exynos_camera, v4l2_id, buffer_width, buffer_height, buffer_format, 0);
+	if (rc < 0) {
+		ALOGE("%s: Unable to set output pixel format!", __func__);
+		goto error;
+	}
+
+	rc = exynos_v4l2_s_crop_out(exynos_camera, v4l2_id, 0, 0, buffer_width, buffer_height);
+	if (rc < 0) {
+		ALOGE("%s: Unable to crop", __func__);
+		goto error;
+	}
+
+	rc = exynos_v4l2_reqbufs_out(exynos_camera, v4l2_id, 1);
+	if (rc < 0) {
+		ALOGE("%s: Unable to request buffers", __func__);
+		goto error;
+	}
+
+	if (memory_address != 0 && memory_address != (int) 0xffffffff && memory_size >= buffer_length) {
+		for (i = buffers_count; i > 0; i--) {
+			if (buffer_length * i < memory_size)
+				break;
+		}
+
+		// This should never happen
+		if (i == 0)
+			goto error;
+
+		buffers_count = i;
+		ALOGD("Found %d buffers available for output!", buffers_count);
+
+		if (EXYNOS_CAMERA_CALLBACK_DEFINED(request_memory)) {
+			fd = exynos_v4l2_fd(exynos_camera, v4l2_id);
+			if (fd < 0) {
+				ALOGE("%s: Unable to get v4l2 fd for id %d", __func__, v4l2_id);
+				goto error;
+			}
+
+			memory = exynos_camera->callbacks.request_memory(fd, buffer_length, buffers_count, exynos_camera->callbacks.user);
+			if (memory == NULL || memory->data == NULL || memory->data == MAP_FAILED) {
+				ALOGE("%s: Unable to request memory", __func__);
+				goto error;
+			}
+		} else {
+			ALOGE("%s: No memory request function!", __func__);
+			goto error;
+		}
+	} else {
+#ifdef EXYNOS_ION
+		memory_ion_fd = exynos_ion_alloc(exynos_camera, buffers_count * buffer_length);
+		if (memory_ion_fd < 0) {
+			ALOGE("%s: Unable to alloc ION memory", __func__);
+			goto error;
+		}
+
+		if (EXYNOS_CAMERA_CALLBACK_DEFINED(request_memory)) {
+			memory = exynos_camera->callbacks.request_memory(memory_ion_fd, buffer_length, buffers_count, exynos_camera->callbacks.user);
+			if (memory == NULL || memory->data == NULL || memory->data == MAP_FAILED) {
+				ALOGE("%s: Unable to request memory", __func__);
+				goto error;
+			}
+		} else {
+			ALOGE("%s: No memory request function!", __func__);
+			goto error;
+		}
+
+		memory_address = exynos_ion_phys(exynos_camera, memory_ion_fd);
+#else
+		ALOGE("%s: Unable to find memory", __func__);
+		goto error;
+#endif
+	}
+
+	output->memory = memory;
+	output->memory_address = memory_address;
+#ifdef EXYNOS_ION
+	output->memory_ion_fd = memory_ion_fd;
+#endif
+	output->memory_index = 0;
+	output->buffers_count = buffers_count;
+	output->buffer_length = buffer_length;
+
+	output->enabled = 1;
+
+	rc = 0;
+	goto complete;
+
+error:
+	if (memory != NULL && memory->release != NULL) {
+		memory->release(memory);
+		output->memory = NULL;
+	}
+
+#ifdef EXYNOS_ION
+	if (memory_ion_fd >= 0)
+		exynos_ion_free(exynos_camera, memory_ion_fd);
+#endif
+
+	exynos_v4l2_close(exynos_camera, v4l2_id);
+
+	rc = -1;
+
+complete:
+	return rc;
+}
+
+void exynos_v4l2_output_stop(struct exynos_camera *exynos_camera,
+	struct exynos_v4l2_output *output)
+{
+	int v4l2_id;
+	int rc;
+
+	if (exynos_camera == NULL || output == NULL)
+		return;
+
+//	ALOGD("%s()", __func__);
+
+	if (!output->enabled) {
+		ALOGE("Output was already stopped");
+		return;
+	}
+
+	v4l2_id = output->v4l2_id;
+
+	rc = exynos_v4l2_reqbufs_out(exynos_camera, v4l2_id, 0);
+	if (rc < 0)
+		ALOGE("%s: Unable to request buffers", __func__);
+
+	if (output->memory != NULL && output->memory->release != NULL) {
+		output->memory->release(output->memory);
+		output->memory = NULL;
+	}
+
+#ifdef EXYNOS_ION
+	if (output->memory_ion_fd >= 0) {
+		exynos_ion_free(exynos_camera, output->memory_ion_fd);
+		output->memory_ion_fd = -1;
+	}
+#endif
+
+	exynos_v4l2_close(exynos_camera, v4l2_id);
+
+	output->enabled = 0;
+}
+
+int exynos_v4l2_output(struct exynos_camera *exynos_camera,
+	struct exynos_v4l2_output *output, int buffer_address)
+{
+	struct fimc_buf fimc_buffer;
+	void *fb_base;
+	int width, height, format;
+	int buffer_width, buffer_height, buffer_format;
+	int buffer_length;
+	int address;
+	int v4l2_id;
+	int rc;
+
+	if (exynos_camera == NULL || output == NULL)
+		return -EINVAL;
+
+//	ALOGD("%s()", __func__);
+
+	if (!output->enabled) {
+		ALOGE("Output was not started");
+		return -1;
+	}
+
+	width = output->width;
+	height = output->height;
+	format = output->format;
+
+	buffer_width = output->buffer_width;
+	buffer_height = output->buffer_height;
+	buffer_format = output->buffer_format;
+
+	buffer_length = output->buffer_length;
+	v4l2_id = output->v4l2_id;
+
+	rc = exynos_v4l2_g_fbuf(exynos_camera, v4l2_id, &fb_base, NULL, NULL, NULL);
+	if (rc < 0) {
+		ALOGE("%s: Unable to get fbuf", __func__);
+		goto error;
+	}
+
+	rc = exynos_v4l2_s_fbuf(exynos_camera, v4l2_id, fb_base, width, height, format);
+	if (rc < 0) {
+		ALOGE("%s: Unable to set fbuf", __func__);
+		goto error;
+	}
+
+	memset(&fimc_buffer, 0, sizeof(fimc_buffer));
+
+	address = output->memory_address + buffer_length * output->memory_index;
+
+	exynos_camera_yuv_planes(width, height, format, address, (int *) &fimc_buffer.base[0], (int *) &fimc_buffer.base[1], (int *) &fimc_buffer.base[2]);
+
+	rc = exynos_v4l2_s_ctrl(exynos_camera, v4l2_id, V4L2_CID_DST_INFO, (int) &fimc_buffer);
+	if (rc < 0) {
+		ALOGE("%s: Unable to set dst info", __func__);
+		goto error;
+	}
+
+	rc = exynos_v4l2_s_fmt_win(exynos_camera, v4l2_id, 0, 0, width, height);
+	if (rc < 0) {
+		ALOGE("%s: Unable to set overlay win", __func__);
+		goto error;
+	}
+
+	rc = exynos_v4l2_streamon_out(exynos_camera, v4l2_id);
+	if (rc < 0) {
+		ALOGE("%s: Unable to start stream", __func__);
+		goto error;
+	}
+
+	memset(&fimc_buffer, 0, sizeof(fimc_buffer));
+
+	exynos_camera_yuv_planes(buffer_width, buffer_height, buffer_format, buffer_address, (int *) &fimc_buffer.base[0], (int *) &fimc_buffer.base[1], (int *) &fimc_buffer.base[2]);
+
+	rc = exynos_v4l2_qbuf_out(exynos_camera, v4l2_id, 0, (unsigned long) &fimc_buffer);
+	if (rc < 0) {
+		ALOGE("%s: Unable to queue buffer", __func__);
+		goto error;
+	}
+
+	rc = exynos_v4l2_dqbuf_out(exynos_camera, v4l2_id);
+	if (rc < 0) {
+		ALOGE("%s: Unable to dequeue buffer", __func__);
+		goto error;
+	}
+
+	rc = exynos_v4l2_streamoff_out(exynos_camera, v4l2_id);
+	if (rc < 0) {
+		ALOGE("%s: Unable to stop stream", __func__);
+		goto error;
+	}
+
+	rc = 0;
+	goto complete;
+
+error:
+	rc = -1;
+
+complete:
+	return rc;
+}
+
+int exynos_v4l2_output_release(struct exynos_camera *exynos_camera,
+	struct exynos_v4l2_output *output)
+{
+	int buffers_count;
+	int memory_index;
+
+	if (exynos_camera == NULL || output == NULL)
+		return -EINVAL;
+
+//	ALOGD("%s()", __func__);
+
+	buffers_count = output->buffers_count;
+	memory_index = output->memory_index;
+
+	memory_index++;
+	output->memory_index = memory_index % buffers_count;
+
+	return 0;
+}