libavcodec/libschroedingerdec.c - nest-android-app/ffmpeg - Git at Google

 /*
  * Dirac decoder support via Schroedinger libraries
  * Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg 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,
  * 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
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */

 /**
 * @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 <string.h>

 #include "libavutil/imgutils.h"
 #include "libavutil/internal.h"
 #include "libavutil/intreadwrite.h"
 #include "libavutil/mem.h"
 #include "avcodec.h"
 #include "internal.h"
 #include "libschroedinger.h"

 #include <schroedinger/schro.h>
 #include <schroedinger/schrodebug.h>
 #include <schroedinger/schrovideoformat.h>

 /** SchroFrame and Pts relation */
 typedef struct LibSchroFrameContext {
      SchroFrame *frame;
      int64_t pts;
 } LibSchroFrameContext;

 /** libschroedinger decoder private data */
 typedef struct SchroDecoderParams {
     /** Schroedinger video format */
     SchroVideoFormat *format;

     /** Schroedinger frame format */
     SchroFrameFormat frame_format;

     /** decoder handle */
     SchroDecoder* decoder;

     /** queue storing decoded frames */
     FFSchroQueue dec_frame_queue;

     /** end of sequence signalled */
     int eos_signalled;

     /** end of sequence pulled */
     int eos_pulled;
 } SchroDecoderParams;

 typedef struct SchroParseUnitContext {
     const uint8_t *buf;
     int           buf_size;
 } SchroParseUnitContext;


 static void libschroedinger_decode_buffer_free(SchroBuffer *schro_buf,
                                                void *priv)
 {
     av_freep(&priv);
 }

 static void parse_context_init(SchroParseUnitContext *parse_ctx,
                                const uint8_t *buf, int buf_size)
 {
     parse_ctx->buf           = buf;
     parse_ctx->buf_size      = buf_size;
 }

 static SchroBuffer *find_next_parse_unit(SchroParseUnitContext *parse_ctx)
 {
     SchroBuffer *enc_buf = NULL;
     int next_pu_offset = 0;
     unsigned char *in_buf;

     if (parse_ctx->buf_size < 13 ||
         parse_ctx->buf[0] != 'B' ||
         parse_ctx->buf[1] != 'B' ||
         parse_ctx->buf[2] != 'C' ||
         parse_ctx->buf[3] != 'D')
         return NULL;

     next_pu_offset = (parse_ctx->buf[5] << 24) +
                      (parse_ctx->buf[6] << 16) +
                      (parse_ctx->buf[7] <<  8) +
                       parse_ctx->buf[8];

     if (next_pu_offset == 0 &&
         SCHRO_PARSE_CODE_IS_END_OF_SEQUENCE(parse_ctx->buf[4]))
         next_pu_offset = 13;

     if (next_pu_offset <= 0 || parse_ctx->buf_size < next_pu_offset)
         return NULL;

     in_buf = av_malloc(next_pu_offset);
     if (!in_buf) {
         av_log(parse_ctx, AV_LOG_ERROR, "Unable to allocate input buffer\n");
         return NULL;
     }

     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_size -= next_pu_offset;

     return enc_buf;
 }

 /**
 * Returns FFmpeg chroma format.
 */
 static enum AVPixelFormat get_chroma_format(SchroChromaFormat schro_pix_fmt)
 {
     int num_formats = sizeof(schro_pixel_format_map) /
                       sizeof(schro_pixel_format_map[0]);
     int idx;

     for (idx = 0; idx < num_formats; ++idx)
         if (schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt)
             return schro_pixel_format_map[idx].ff_pix_fmt;
     return AV_PIX_FMT_NONE;
 }

 static av_cold int libschroedinger_decode_init(AVCodecContext *avctx)
 {

     SchroDecoderParams *p_schro_params = avctx->priv_data;
     /* First of all, initialize our supporting libraries. */
     schro_init();

     schro_debug_set_level(avctx->debug);
     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_schro_queue_init(&p_schro_params->dec_frame_queue);
     return 0;
 }

 static void libschroedinger_decode_frame_free(void *frame)
 {
     schro_frame_unref(frame);
 }

 static void libschroedinger_handle_first_access_unit(AVCodecContext *avctx)
 {
     SchroDecoderParams *p_schro_params = avctx->priv_data;
     SchroDecoder *decoder = p_schro_params->decoder;

     p_schro_params->format = schro_decoder_get_video_format(decoder);

     /* Tell FFmpeg about sequence details. */
     if (av_image_check_size(p_schro_params->format->width,
                             p_schro_params->format->height, 0, avctx) < 0) {
         av_log(avctx, AV_LOG_ERROR, "invalid dimensions (%dx%d)\n",
                p_schro_params->format->width, p_schro_params->format->height);
         avctx->height = avctx->width = 0;
         return;
     }
     avctx->height  = p_schro_params->format->height;
     avctx->width   = p_schro_params->format->width;
     avctx->pix_fmt = get_chroma_format(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(avctx, AV_LOG_ERROR,
                "This codec currently only supports planar YUV 4:2:0, 4:2:2 "
                "and 4:4:4 formats.\n");
         return;
     }

     avctx->framerate.num = p_schro_params->format->frame_rate_numerator;
     avctx->framerate.den = p_schro_params->format->frame_rate_denominator;
 }

 static int libschroedinger_decode_frame(AVCodecContext *avctx,
                                         void *data, int *got_frame,
                                         AVPacket *avpkt)
 {
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     int64_t pts  = avpkt->pts;
     SchroTag *tag;

     SchroDecoderParams *p_schro_params = avctx->priv_data;
     SchroDecoder *decoder = p_schro_params->decoder;
     SchroBuffer *enc_buf;
     SchroFrame* frame;
     AVFrame *avframe = data;
     int state;
     int go = 1;
     int outer = 1;
     SchroParseUnitContext parse_ctx;
     LibSchroFrameContext *framewithpts = NULL;

     *got_frame = 0;

     parse_context_init(&parse_ctx, buf, buf_size);
     if (!buf_size) {
         if (!p_schro_params->eos_signalled) {
             state = schro_decoder_push_end_of_stream(decoder);
             p_schro_params->eos_signalled = 1;
         }
     }

     /* Loop through all the individual parse units in the input buffer */
     do {
         if ((enc_buf = find_next_parse_unit(&parse_ctx))) {
             /* Set Schrotag with the pts to be recovered after decoding*/
             enc_buf->tag = schro_tag_new(av_malloc(sizeof(int64_t)), av_free);
             if (!enc_buf->tag->value) {
                 av_log(avctx, AV_LOG_ERROR, "Unable to allocate SchroTag\n");
                 return AVERROR(ENOMEM);
             }
             AV_WN(64, enc_buf->tag->value, pts);
             /* Push buffer into decoder. */
             if (SCHRO_PARSE_CODE_IS_PICTURE(enc_buf->data[4]) &&
                 SCHRO_PARSE_CODE_NUM_REFS(enc_buf->data[4]) > 0)
                 avctx->has_b_frames = 1;
             state = schro_decoder_push(decoder, enc_buf);
             if (state == SCHRO_DECODER_FIRST_ACCESS_UNIT)
                 libschroedinger_handle_first_access_unit(avctx);
             go = 1;
         } else
             outer = 0;

         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(avctx);
                 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(avctx,
                                               p_schro_params->frame_format);
                 if (!frame)
                     return AVERROR(ENOMEM);
                 schro_decoder_add_output_picture(decoder, frame);
                 break;

             case SCHRO_DECODER_OK:
                 /* Pull a frame out of the decoder. */
                 tag   = schro_decoder_get_picture_tag(decoder);
                 frame = schro_decoder_pull(decoder);

                 if (frame) {
                     /* Add relation between schroframe and pts. */
                     framewithpts = av_malloc(sizeof(LibSchroFrameContext));
                     if (!framewithpts) {
                         av_log(avctx, AV_LOG_ERROR, "Unable to allocate FrameWithPts\n");
                         return AVERROR(ENOMEM);
                     }
                     framewithpts->frame = frame;
                     framewithpts->pts   = AV_RN64(tag->value);
                     ff_schro_queue_push_back(&p_schro_params->dec_frame_queue,
                                              framewithpts);
                 }
                 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);

     /* Grab next frame to be returned from the top of the queue. */
     framewithpts = ff_schro_queue_pop(&p_schro_params->dec_frame_queue);

     if (framewithpts && framewithpts->frame) {
         int ret;

         if ((ret = ff_get_buffer(avctx, avframe, 0)) < 0)
             return ret;

         memcpy(avframe->data[0],
                framewithpts->frame->components[0].data,
                framewithpts->frame->components[0].length);

         memcpy(avframe->data[1],
                framewithpts->frame->components[1].data,
                framewithpts->frame->components[1].length);

         memcpy(avframe->data[2],
                framewithpts->frame->components[2].data,
                framewithpts->frame->components[2].length);

         /* Fill frame with current buffer data from Schroedinger. */
         avframe->pkt_pts = framewithpts->pts;
         avframe->linesize[0] = framewithpts->frame->components[0].stride;
         avframe->linesize[1] = framewithpts->frame->components[1].stride;
         avframe->linesize[2] = framewithpts->frame->components[2].stride;

         *got_frame      = 1;

         /* Now free the frame resources. */
         libschroedinger_decode_frame_free(framewithpts->frame);
         av_free(framewithpts);
     } else {
         data       = NULL;
         *got_frame = 0;
     }
     return buf_size;
 }


 static av_cold int libschroedinger_decode_close(AVCodecContext *avctx)
 {
     SchroDecoderParams *p_schro_params = avctx->priv_data;
     /* Free the decoder. */
     schro_decoder_free(p_schro_params->decoder);
     av_freep(&p_schro_params->format);

     /* Free data in the output frame queue. */
     ff_schro_queue_free(&p_schro_params->dec_frame_queue,
                         libschroedinger_decode_frame_free);

     return 0;
 }

 static void libschroedinger_flush(AVCodecContext *avctx)
 {
     /* Got a seek request. Free the decoded frames queue and then reset
      * the decoder */
     SchroDecoderParams *p_schro_params = avctx->priv_data;

     /* Free data in the output frame queue. */
     ff_schro_queue_free(&p_schro_params->dec_frame_queue,
                         libschroedinger_decode_frame_free);

     ff_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 ff_libschroedinger_decoder = {
     .name           = "libschroedinger",
     .long_name      = NULL_IF_CONFIG_SMALL("libschroedinger Dirac 2.2"),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_DIRAC,
     .priv_data_size = sizeof(SchroDecoderParams),
     .init           = libschroedinger_decode_init,
     .close          = libschroedinger_decode_close,
     .decode         = libschroedinger_decode_frame,
     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
     .flush          = libschroedinger_flush,
 };
	/*
	* Dirac decoder support via Schroedinger libraries
	* Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
	*
	* This file is part of FFmpeg.
	*
	* FFmpeg 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,
	* 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
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	/**
	* @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 <string.h>

	#include "libavutil/imgutils.h"
	#include "libavutil/internal.h"
	#include "libavutil/intreadwrite.h"
	#include "libavutil/mem.h"
	#include "avcodec.h"
	#include "internal.h"
	#include "libschroedinger.h"

	#include <schroedinger/schro.h>
	#include <schroedinger/schrodebug.h>
	#include <schroedinger/schrovideoformat.h>

	/** SchroFrame and Pts relation */
	typedef struct LibSchroFrameContext {
	SchroFrame *frame;
	int64_t pts;
	} LibSchroFrameContext;

	/** libschroedinger decoder private data */
	typedef struct SchroDecoderParams {
	/** Schroedinger video format */
	SchroVideoFormat *format;

	/** Schroedinger frame format */
	SchroFrameFormat frame_format;

	/** decoder handle */
	SchroDecoder* decoder;

	/** queue storing decoded frames */
	FFSchroQueue dec_frame_queue;

	/** end of sequence signalled */
	int eos_signalled;

	/** end of sequence pulled */
	int eos_pulled;
	} SchroDecoderParams;

	typedef struct SchroParseUnitContext {
	const uint8_t *buf;
	int buf_size;
	} SchroParseUnitContext;


	static void libschroedinger_decode_buffer_free(SchroBuffer *schro_buf,
	void *priv)
	{
	av_freep(&priv);
	}

	static void parse_context_init(SchroParseUnitContext *parse_ctx,
	const uint8_t *buf, int buf_size)
	{
	parse_ctx->buf = buf;
	parse_ctx->buf_size = buf_size;
	}

	static SchroBuffer find_next_parse_unit(SchroParseUnitContext parse_ctx)
	{
	SchroBuffer *enc_buf = NULL;
	int next_pu_offset = 0;
	unsigned char *in_buf;

	if (parse_ctx->buf_size < 13 \|\|
	parse_ctx->buf[0] != 'B' \|\|
	parse_ctx->buf[1] != 'B' \|\|
	parse_ctx->buf[2] != 'C' \|\|
	parse_ctx->buf[3] != 'D')
	return NULL;

	next_pu_offset = (parse_ctx->buf[5] << 24) +
	(parse_ctx->buf[6] << 16) +
	(parse_ctx->buf[7] << 8) +
	parse_ctx->buf[8];

	if (next_pu_offset == 0 &&
	SCHRO_PARSE_CODE_IS_END_OF_SEQUENCE(parse_ctx->buf[4]))
	next_pu_offset = 13;

	if (next_pu_offset <= 0 \|\| parse_ctx->buf_size < next_pu_offset)
	return NULL;

	in_buf = av_malloc(next_pu_offset);
	if (!in_buf) {
	av_log(parse_ctx, AV_LOG_ERROR, "Unable to allocate input buffer\n");
	return NULL;
	}

	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_size -= next_pu_offset;

	return enc_buf;
	}

	/**
	* Returns FFmpeg chroma format.
	*/
	static enum AVPixelFormat get_chroma_format(SchroChromaFormat schro_pix_fmt)
	{
	int num_formats = sizeof(schro_pixel_format_map) /
	sizeof(schro_pixel_format_map[0]);
	int idx;

	for (idx = 0; idx < num_formats; ++idx)
	if (schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt)
	return schro_pixel_format_map[idx].ff_pix_fmt;
	return AV_PIX_FMT_NONE;
	}

	static av_cold int libschroedinger_decode_init(AVCodecContext *avctx)
	{

	SchroDecoderParams *p_schro_params = avctx->priv_data;
	/* First of all, initialize our supporting libraries. */
	schro_init();

	schro_debug_set_level(avctx->debug);
	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_schro_queue_init(&p_schro_params->dec_frame_queue);
	return 0;
	}

	static void libschroedinger_decode_frame_free(void *frame)
	{
	schro_frame_unref(frame);
	}

	static void libschroedinger_handle_first_access_unit(AVCodecContext *avctx)
	{
	SchroDecoderParams *p_schro_params = avctx->priv_data;
	SchroDecoder *decoder = p_schro_params->decoder;

	p_schro_params->format = schro_decoder_get_video_format(decoder);

	/* Tell FFmpeg about sequence details. */
	if (av_image_check_size(p_schro_params->format->width,
	p_schro_params->format->height, 0, avctx) < 0) {
	av_log(avctx, AV_LOG_ERROR, "invalid dimensions (%dx%d)\n",
	p_schro_params->format->width, p_schro_params->format->height);
	avctx->height = avctx->width = 0;
	return;
	}
	avctx->height = p_schro_params->format->height;
	avctx->width = p_schro_params->format->width;
	avctx->pix_fmt = get_chroma_format(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(avctx, AV_LOG_ERROR,
	"This codec currently only supports planar YUV 4:2:0, 4:2:2 "
	"and 4:4:4 formats.\n");
	return;
	}

	avctx->framerate.num = p_schro_params->format->frame_rate_numerator;
	avctx->framerate.den = p_schro_params->format->frame_rate_denominator;
	}

	static int libschroedinger_decode_frame(AVCodecContext *avctx,
	void data, int got_frame,
	AVPacket *avpkt)
	{
	const uint8_t *buf = avpkt->data;
	int buf_size = avpkt->size;
	int64_t pts = avpkt->pts;
	SchroTag *tag;

	SchroDecoderParams *p_schro_params = avctx->priv_data;
	SchroDecoder *decoder = p_schro_params->decoder;
	SchroBuffer *enc_buf;
	SchroFrame* frame;
	AVFrame *avframe = data;
	int state;
	int go = 1;
	int outer = 1;
	SchroParseUnitContext parse_ctx;
	LibSchroFrameContext *framewithpts = NULL;

	*got_frame = 0;

	parse_context_init(&parse_ctx, buf, buf_size);
	if (!buf_size) {
	if (!p_schro_params->eos_signalled) {
	state = schro_decoder_push_end_of_stream(decoder);
	p_schro_params->eos_signalled = 1;
	}
	}

	/* Loop through all the individual parse units in the input buffer */
	do {
	if ((enc_buf = find_next_parse_unit(&parse_ctx))) {
	/* Set Schrotag with the pts to be recovered after decoding*/
	enc_buf->tag = schro_tag_new(av_malloc(sizeof(int64_t)), av_free);
	if (!enc_buf->tag->value) {
	av_log(avctx, AV_LOG_ERROR, "Unable to allocate SchroTag\n");
	return AVERROR(ENOMEM);
	}
	AV_WN(64, enc_buf->tag->value, pts);
	/* Push buffer into decoder. */
	if (SCHRO_PARSE_CODE_IS_PICTURE(enc_buf->data[4]) &&
	SCHRO_PARSE_CODE_NUM_REFS(enc_buf->data[4]) > 0)
	avctx->has_b_frames = 1;
	state = schro_decoder_push(decoder, enc_buf);
	if (state == SCHRO_DECODER_FIRST_ACCESS_UNIT)
	libschroedinger_handle_first_access_unit(avctx);
	go = 1;
	} else
	outer = 0;

	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(avctx);
	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(avctx,
	p_schro_params->frame_format);
	if (!frame)
	return AVERROR(ENOMEM);
	schro_decoder_add_output_picture(decoder, frame);
	break;

	case SCHRO_DECODER_OK:
	/* Pull a frame out of the decoder. */
	tag = schro_decoder_get_picture_tag(decoder);
	frame = schro_decoder_pull(decoder);

	if (frame) {
	/* Add relation between schroframe and pts. */
	framewithpts = av_malloc(sizeof(LibSchroFrameContext));
	if (!framewithpts) {
	av_log(avctx, AV_LOG_ERROR, "Unable to allocate FrameWithPts\n");
	return AVERROR(ENOMEM);
	}
	framewithpts->frame = frame;
	framewithpts->pts = AV_RN64(tag->value);
	ff_schro_queue_push_back(&p_schro_params->dec_frame_queue,
	framewithpts);
	}
	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);

	/* Grab next frame to be returned from the top of the queue. */
	framewithpts = ff_schro_queue_pop(&p_schro_params->dec_frame_queue);

	if (framewithpts && framewithpts->frame) {
	int ret;

	if ((ret = ff_get_buffer(avctx, avframe, 0)) < 0)
	return ret;

	memcpy(avframe->data[0],
	framewithpts->frame->components[0].data,
	framewithpts->frame->components[0].length);

	memcpy(avframe->data[1],
	framewithpts->frame->components[1].data,
	framewithpts->frame->components[1].length);

	memcpy(avframe->data[2],
	framewithpts->frame->components[2].data,
	framewithpts->frame->components[2].length);

	/* Fill frame with current buffer data from Schroedinger. */
	avframe->pkt_pts = framewithpts->pts;
	avframe->linesize[0] = framewithpts->frame->components[0].stride;
	avframe->linesize[1] = framewithpts->frame->components[1].stride;
	avframe->linesize[2] = framewithpts->frame->components[2].stride;

	*got_frame = 1;

	/* Now free the frame resources. */
	libschroedinger_decode_frame_free(framewithpts->frame);
	av_free(framewithpts);
	} else {
	data = NULL;
	*got_frame = 0;
	}
	return buf_size;
	}


	static av_cold int libschroedinger_decode_close(AVCodecContext *avctx)
	{
	SchroDecoderParams *p_schro_params = avctx->priv_data;
	/* Free the decoder. */
	schro_decoder_free(p_schro_params->decoder);
	av_freep(&p_schro_params->format);

	/* Free data in the output frame queue. */
	ff_schro_queue_free(&p_schro_params->dec_frame_queue,
	libschroedinger_decode_frame_free);

	return 0;
	}

	static void libschroedinger_flush(AVCodecContext *avctx)
	{
	/* Got a seek request. Free the decoded frames queue and then reset
	* the decoder */
	SchroDecoderParams *p_schro_params = avctx->priv_data;

	/* Free data in the output frame queue. */
	ff_schro_queue_free(&p_schro_params->dec_frame_queue,
	libschroedinger_decode_frame_free);

	ff_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 ff_libschroedinger_decoder = {
	.name = "libschroedinger",
	.long_name = NULL_IF_CONFIG_SMALL("libschroedinger Dirac 2.2"),
	.type = AVMEDIA_TYPE_VIDEO,
	.id = AV_CODEC_ID_DIRAC,
	.priv_data_size = sizeof(SchroDecoderParams),
	.init = libschroedinger_decode_init,
	.close = libschroedinger_decode_close,
	.decode = libschroedinger_decode_frame,
	.capabilities = AV_CODEC_CAP_DELAY \| AV_CODEC_CAP_DR1,
	.flush = libschroedinger_flush,
	};