* Dirac decoder support via Schroedinger libraries
* Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
-* @file libavcodec/libschroedingerdec.c
+* @file
* Dirac decoder support via libschroedinger-1.0 libraries. More details about
* the Schroedinger project can be found at http://www.diracvideo.org/.
* The library implements Dirac Specification Version 2.2.
* (http://dirac.sourceforge.net/specification.html).
*/
+#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "libdirac_libschro.h"
#include "libschroedinger.h"
#include <schroedinger/schrovideoformat.h>
/** libschroedinger decoder private data */
-typedef struct FfmpegSchroDecoderParams
-{
+typedef struct FfmpegSchroDecoderParams {
/** Schroedinger video format */
SchroVideoFormat *format;
AVPicture dec_pic;
} FfmpegSchroDecoderParams;
-typedef struct FfmpegSchroParseUnitContext
-{
+typedef struct FfmpegSchroParseUnitContext {
const uint8_t *buf;
int buf_size;
} FfmpegSchroParseUnitContext;
-static void libschroedinger_decode_buffer_free (SchroBuffer *schro_buf,
- void *priv);
+static void libschroedinger_decode_buffer_free(SchroBuffer *schro_buf,
+ void *priv);
-static void FfmpegSchroParseContextInit (FfmpegSchroParseUnitContext *parse_ctx,
- const uint8_t *buf, int buf_size)
+static void FfmpegSchroParseContextInit(FfmpegSchroParseUnitContext *parse_ctx,
+ const uint8_t *buf, int buf_size)
{
parse_ctx->buf = buf;
parse_ctx->buf_size = buf_size;
}
-static SchroBuffer* FfmpegFindNextSchroParseUnit (FfmpegSchroParseUnitContext *parse_ctx)
+static SchroBuffer* FfmpegFindNextSchroParseUnit(FfmpegSchroParseUnitContext *parse_ctx)
{
SchroBuffer *enc_buf = NULL;
int next_pu_offset = 0;
return NULL;
in_buf = av_malloc(next_pu_offset);
- memcpy (in_buf, parse_ctx->buf, next_pu_offset);
- enc_buf = schro_buffer_new_with_data (in_buf, next_pu_offset);
+ memcpy(in_buf, parse_ctx->buf, next_pu_offset);
+ enc_buf = schro_buffer_new_with_data(in_buf, next_pu_offset);
enc_buf->free = libschroedinger_decode_buffer_free;
enc_buf->priv = in_buf;
- parse_ctx->buf += next_pu_offset;
+ parse_ctx->buf += next_pu_offset;
parse_ctx->buf_size -= next_pu_offset;
return enc_buf;
}
/**
-* Returns FFmpeg chroma format.
+* Returns Libav chroma format.
*/
static enum PixelFormat GetFfmpegChromaFormat(SchroChromaFormat schro_pix_fmt)
{
sizeof(ffmpeg_schro_pixel_format_map[0]);
int idx;
- for (idx = 0; idx < num_formats; ++idx) {
- if (ffmpeg_schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) {
+ for (idx = 0; idx < num_formats; ++idx)
+ if (ffmpeg_schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt)
return ffmpeg_schro_pixel_format_map[idx].ff_pix_fmt;
- }
- }
return PIX_FMT_NONE;
}
static av_cold int libschroedinger_decode_init(AVCodecContext *avccontext)
{
- FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data ;
+ FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
/* First of all, initialize our supporting libraries. */
schro_init();
schro_debug_set_level(avccontext->debug);
- p_schro_params->decoder = schro_decoder_new();
+ p_schro_params->decoder = schro_decoder_new();
schro_decoder_set_skip_ratio(p_schro_params->decoder, 1);
if (!p_schro_params->decoder)
return -1;
/* Initialize the decoded frame queue. */
- ff_dirac_schro_queue_init (&p_schro_params->dec_frame_queue);
- return 0 ;
+ ff_dirac_schro_queue_init(&p_schro_params->dec_frame_queue);
+ return 0;
}
-static void libschroedinger_decode_buffer_free (SchroBuffer *schro_buf,
- void *priv)
+static void libschroedinger_decode_buffer_free(SchroBuffer *schro_buf,
+ void *priv)
{
av_freep(&priv);
}
-static void libschroedinger_decode_frame_free (void *frame)
+static void libschroedinger_decode_frame_free(void *frame)
{
schro_frame_unref(frame);
}
FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
SchroDecoder *decoder = p_schro_params->decoder;
- p_schro_params->format = schro_decoder_get_video_format (decoder);
+ p_schro_params->format = schro_decoder_get_video_format(decoder);
- /* Tell FFmpeg about sequence details. */
- if(avcodec_check_dimensions(avccontext, p_schro_params->format->width,
- p_schro_params->format->height) < 0) {
+ /* Tell Libav about sequence details. */
+ if (av_image_check_size(p_schro_params->format->width, p_schro_params->format->height,
+ 0, avccontext) < 0) {
av_log(avccontext, AV_LOG_ERROR, "invalid dimensions (%dx%d)\n",
p_schro_params->format->width, p_schro_params->format->height);
avccontext->height = avccontext->width = 0;
}
avccontext->height = p_schro_params->format->height;
avccontext->width = p_schro_params->format->width;
- avccontext->pix_fmt =
- GetFfmpegChromaFormat(p_schro_params->format->chroma_format);
-
- if (ff_get_schro_frame_format( p_schro_params->format->chroma_format,
- &p_schro_params->frame_format) == -1) {
- av_log (avccontext, AV_LOG_ERROR,
- "This codec currently only supports planar YUV 4:2:0, 4:2:2 "
- "and 4:4:4 formats.\n");
+ avccontext->pix_fmt = GetFfmpegChromaFormat(p_schro_params->format->chroma_format);
+
+ if (ff_get_schro_frame_format(p_schro_params->format->chroma_format,
+ &p_schro_params->frame_format) == -1) {
+ av_log(avccontext, AV_LOG_ERROR,
+ "This codec currently only supports planar YUV 4:2:0, 4:2:2 "
+ "and 4:4:4 formats.\n");
return;
}
avccontext->time_base.num = p_schro_params->format->frame_rate_denominator;
if (!p_schro_params->dec_pic.data[0])
- {
avpicture_alloc(&p_schro_params->dec_pic,
avccontext->pix_fmt,
avccontext->width,
avccontext->height);
- }
}
static int libschroedinger_decode_frame(AVCodecContext *avccontext,
FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
SchroDecoder *decoder = p_schro_params->decoder;
- SchroVideoFormat *format;
AVPicture *picture = data;
SchroBuffer *enc_buf;
SchroFrame* frame;
*data_size = 0;
- FfmpegSchroParseContextInit (&parse_ctx, buf, buf_size);
+ FfmpegSchroParseContextInit(&parse_ctx, buf, buf_size);
if (!buf_size) {
if (!p_schro_params->eos_signalled) {
state = schro_decoder_push_end_of_stream(decoder);
if (SCHRO_PARSE_CODE_IS_PICTURE(enc_buf->data[4]) &&
SCHRO_PARSE_CODE_NUM_REFS(enc_buf->data[4]) > 0)
avccontext->has_b_frames = 1;
- state = schro_decoder_push (decoder, enc_buf);
+ state = schro_decoder_push(decoder, enc_buf);
if (state == SCHRO_DECODER_FIRST_ACCESS_UNIT)
- libschroedinger_handle_first_access_unit(avccontext);
+ libschroedinger_handle_first_access_unit(avccontext);
go = 1;
- }
- else
- outer = 0;
- format = p_schro_params->format;
-
- while (go) {
- /* Parse data and process result. */
- state = schro_decoder_wait (decoder);
- switch (state)
- {
- case SCHRO_DECODER_FIRST_ACCESS_UNIT:
- libschroedinger_handle_first_access_unit (avccontext);
- break;
-
- case SCHRO_DECODER_NEED_BITS:
- /* Need more input data - stop iterating over what we have. */
- go = 0;
- break;
-
- case SCHRO_DECODER_NEED_FRAME:
- /* Decoder needs a frame - create one and push it in. */
-
- frame = schro_frame_new_and_alloc(NULL,
- p_schro_params->frame_format,
- format->width,
- format->height);
- schro_decoder_add_output_picture (decoder, frame);
- break;
-
- case SCHRO_DECODER_OK:
- /* Pull a frame out of the decoder. */
- frame = schro_decoder_pull (decoder);
-
- if (frame) {
- ff_dirac_schro_queue_push_back(
- &p_schro_params->dec_frame_queue,
- frame);
- }
- break;
- case SCHRO_DECODER_EOS:
- go = 0;
- p_schro_params->eos_pulled = 1;
- schro_decoder_reset (decoder);
+ } else
outer = 0;
- break;
- case SCHRO_DECODER_ERROR:
- return -1;
- break;
+ while (go) {
+ /* Parse data and process result. */
+ state = schro_decoder_wait(decoder);
+ switch (state) {
+ case SCHRO_DECODER_FIRST_ACCESS_UNIT:
+ libschroedinger_handle_first_access_unit(avccontext);
+ break;
+
+ case SCHRO_DECODER_NEED_BITS:
+ /* Need more input data - stop iterating over what we have. */
+ go = 0;
+ break;
+
+ case SCHRO_DECODER_NEED_FRAME:
+ /* Decoder needs a frame - create one and push it in. */
+ frame = ff_create_schro_frame(avccontext,
+ p_schro_params->frame_format);
+ schro_decoder_add_output_picture(decoder, frame);
+ break;
+
+ case SCHRO_DECODER_OK:
+ /* Pull a frame out of the decoder. */
+ frame = schro_decoder_pull(decoder);
+
+ if (frame)
+ ff_dirac_schro_queue_push_back(&p_schro_params->dec_frame_queue,
+ frame);
+ break;
+ case SCHRO_DECODER_EOS:
+ go = 0;
+ p_schro_params->eos_pulled = 1;
+ schro_decoder_reset(decoder);
+ outer = 0;
+ break;
+
+ case SCHRO_DECODER_ERROR:
+ return -1;
+ break;
+ }
}
- }
- } while(outer);
+ } while (outer);
/* Grab next frame to be returned from the top of the queue. */
frame = ff_dirac_schro_queue_pop(&p_schro_params->dec_frame_queue);
if (frame) {
- memcpy (p_schro_params->dec_pic.data[0],
- frame->components[0].data,
- frame->components[0].length);
+ memcpy(p_schro_params->dec_pic.data[0],
+ frame->components[0].data,
+ frame->components[0].length);
- memcpy (p_schro_params->dec_pic.data[1],
- frame->components[1].data,
- frame->components[1].length);
+ memcpy(p_schro_params->dec_pic.data[1],
+ frame->components[1].data,
+ frame->components[1].length);
- memcpy (p_schro_params->dec_pic.data[2],
- frame->components[2].data,
- frame->components[2].length);
+ memcpy(p_schro_params->dec_pic.data[2],
+ frame->components[2].data,
+ frame->components[2].length);
/* Fill picture with current buffer data from Schroedinger. */
avpicture_fill(picture, p_schro_params->dec_pic.data[0],
*data_size = sizeof(AVPicture);
/* Now free the frame resources. */
- libschroedinger_decode_frame_free (frame);
+ libschroedinger_decode_frame_free(frame);
}
return buf_size;
}
{
FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
/* Free the decoder. */
- schro_decoder_free (p_schro_params->decoder);
+ schro_decoder_free(p_schro_params->decoder);
av_freep(&p_schro_params->format);
- avpicture_free (&p_schro_params->dec_pic);
+ avpicture_free(&p_schro_params->dec_pic);
/* Free data in the output frame queue. */
- ff_dirac_schro_queue_free (&p_schro_params->dec_frame_queue,
- libschroedinger_decode_frame_free);
+ ff_dirac_schro_queue_free(&p_schro_params->dec_frame_queue,
+ libschroedinger_decode_frame_free);
- return 0 ;
+ return 0;
}
-static void libschroedinger_flush (AVCodecContext *avccontext)
+static void libschroedinger_flush(AVCodecContext *avccontext)
{
/* Got a seek request. Free the decoded frames queue and then reset
* the decoder */
FfmpegSchroDecoderParams *p_schro_params = avccontext->priv_data;
/* Free data in the output frame queue. */
- ff_dirac_schro_queue_free (&p_schro_params->dec_frame_queue,
- libschroedinger_decode_frame_free);
+ ff_dirac_schro_queue_free(&p_schro_params->dec_frame_queue,
+ libschroedinger_decode_frame_free);
- ff_dirac_schro_queue_init (&p_schro_params->dec_frame_queue);
+ ff_dirac_schro_queue_init(&p_schro_params->dec_frame_queue);
schro_decoder_reset(p_schro_params->decoder);
p_schro_params->eos_pulled = 0;
p_schro_params->eos_signalled = 0;
}
-AVCodec libschroedinger_decoder = {
- "libschroedinger",
- CODEC_TYPE_VIDEO,
- CODEC_ID_DIRAC,
- sizeof(FfmpegSchroDecoderParams),
- libschroedinger_decode_init,
- NULL,
- libschroedinger_decode_close,
- libschroedinger_decode_frame,
- CODEC_CAP_DELAY,
+AVCodec ff_libschroedinger_decoder = {
+ .name = "libschroedinger",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_DIRAC,
+ .priv_data_size = sizeof(FfmpegSchroDecoderParams),
+ .init = libschroedinger_decode_init,
+ .close = libschroedinger_decode_close,
+ .decode = libschroedinger_decode_frame,
+ .capabilities = CODEC_CAP_DELAY,
.flush = libschroedinger_flush,
.long_name = NULL_IF_CONFIG_SMALL("libschroedinger Dirac 2.2"),
};
projects / ffmpeg / blobdiff