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![Michael Niedermayer](/assets/img/avatar_default.png)
* qatar/master: (27 commits) libxvid: Give more suitable names to libxvid-related files. libxvid: Separate libxvid encoder from libxvid rate control code. jpeglsdec: Remove write-only variable in ff_jpegls_decode_lse(). fate: cosmetics: lowercase some comments fate: Give more consistent names to some RealVideo/RealAudio tests. lavfi: add avfilter_get_audio_buffer_ref_from_arrays(). lavfi: add extended_data to AVFilterBuffer. lavc: check that extended_data is properly set in avcodec_encode_audio2(). lavc: pad last audio frame with silence when needed. samplefmt: add a function for filling a buffer with silence. samplefmt: add a function for copying audio samples. lavr: do not try to copy to uninitialized output audio data. lavr: make avresample_read() with NULL output discard samples. fate: split idroq audio and video into separate tests fate: improve dependencies fate: add convenient shorthands for ea-vp6, libavcodec, libavutil tests fate: split some combined tests into separate audio and video tests fate: fix dependencies for probe tests mips: intreadwrite: fix inline asm for gcc 4.8 mips: intreadwrite: remove unnecessary inline asm ... Conflicts: cmdutils.h configure doc/APIchanges doc/filters.texi ffmpeg.c ffplay.c libavcodec/internal.h libavcodec/jpeglsdec.c libavcodec/libschroedingerdec.c libavcodec/libxvid.c libavcodec/libxvid_rc.c libavcodec/utils.c libavcodec/version.h libavfilter/avfilter.c libavfilter/avfilter.h libavfilter/buffersink.h tests/Makefile tests/fate/aac.mak tests/fate/audio.mak tests/fate/demux.mak tests/fate/ea.mak tests/fate/image.mak tests/fate/libavutil.mak tests/fate/lossless-audio.mak tests/fate/lossless-video.mak tests/fate/microsoft.mak tests/fate/qt.mak tests/fate/real.mak tests/fate/screen.mak tests/fate/video.mak tests/fate/voice.mak tests/fate/vqf.mak tests/ref/fate/ea-mad tests/ref/fate/ea-tqi Merged-by: Michael Niedermayer <michaelni@gmx.at>
397 lines
14 KiB
C
397 lines
14 KiB
C
/*
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* Dirac decoder support via Schroedinger libraries
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* Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Dirac decoder support via libschroedinger-1.0 libraries. More details about
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* the Schroedinger project can be found at http://www.diracvideo.org/.
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* The library implements Dirac Specification Version 2.2.
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* (http://dirac.sourceforge.net/specification.html).
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*/
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#include "libavutil/imgutils.h"
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#include "libavutil/intreadwrite.h"
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#include "avcodec.h"
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#include "libschroedinger.h"
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#undef NDEBUG
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#include <assert.h>
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#include <schroedinger/schro.h>
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#include <schroedinger/schrodebug.h>
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#include <schroedinger/schrovideoformat.h>
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/** SchroFrame and Pts relation */
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typedef struct LibSchroFrameContext {
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SchroFrame *frame;
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int64_t pts;
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} LibSchroFrameContext;
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/** libschroedinger decoder private data */
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typedef struct SchroDecoderParams {
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/** Schroedinger video format */
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SchroVideoFormat *format;
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/** Schroedinger frame format */
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SchroFrameFormat frame_format;
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/** decoder handle */
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SchroDecoder* decoder;
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/** queue storing decoded frames */
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FFSchroQueue dec_frame_queue;
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/** end of sequence signalled */
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int eos_signalled;
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/** end of sequence pulled */
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int eos_pulled;
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/** decoded picture */
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AVFrame dec_frame;
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} SchroDecoderParams;
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typedef struct SchroParseUnitContext {
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const uint8_t *buf;
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int buf_size;
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} SchroParseUnitContext;
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static void libschroedinger_decode_buffer_free(SchroBuffer *schro_buf,
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void *priv)
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{
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av_freep(&priv);
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}
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static void parse_context_init(SchroParseUnitContext *parse_ctx,
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const uint8_t *buf, int buf_size)
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{
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parse_ctx->buf = buf;
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parse_ctx->buf_size = buf_size;
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}
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static SchroBuffer *find_next_parse_unit(SchroParseUnitContext *parse_ctx)
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{
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SchroBuffer *enc_buf = NULL;
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int next_pu_offset = 0;
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unsigned char *in_buf;
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if (parse_ctx->buf_size < 13 ||
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parse_ctx->buf[0] != 'B' ||
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parse_ctx->buf[1] != 'B' ||
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parse_ctx->buf[2] != 'C' ||
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parse_ctx->buf[3] != 'D')
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return NULL;
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next_pu_offset = (parse_ctx->buf[5] << 24) +
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(parse_ctx->buf[6] << 16) +
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(parse_ctx->buf[7] << 8) +
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parse_ctx->buf[8];
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if (next_pu_offset == 0 &&
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SCHRO_PARSE_CODE_IS_END_OF_SEQUENCE(parse_ctx->buf[4]))
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next_pu_offset = 13;
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if (next_pu_offset <= 0 || parse_ctx->buf_size < next_pu_offset)
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return NULL;
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in_buf = av_malloc(next_pu_offset);
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if (!in_buf) {
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av_log(parse_ctx, AV_LOG_ERROR, "Unable to allocate input buffer\n");
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return NULL;
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}
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memcpy(in_buf, parse_ctx->buf, next_pu_offset);
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enc_buf = schro_buffer_new_with_data(in_buf, next_pu_offset);
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enc_buf->free = libschroedinger_decode_buffer_free;
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enc_buf->priv = in_buf;
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parse_ctx->buf += next_pu_offset;
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parse_ctx->buf_size -= next_pu_offset;
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return enc_buf;
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}
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/**
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* Returns FFmpeg chroma format.
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*/
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static enum PixelFormat get_chroma_format(SchroChromaFormat schro_pix_fmt)
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{
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int num_formats = sizeof(schro_pixel_format_map) /
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sizeof(schro_pixel_format_map[0]);
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int idx;
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for (idx = 0; idx < num_formats; ++idx)
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if (schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt)
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return schro_pixel_format_map[idx].ff_pix_fmt;
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return PIX_FMT_NONE;
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}
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static av_cold int libschroedinger_decode_init(AVCodecContext *avccontext)
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{
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SchroDecoderParams *p_schro_params = avccontext->priv_data;
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/* First of all, initialize our supporting libraries. */
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schro_init();
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schro_debug_set_level(avccontext->debug);
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p_schro_params->decoder = schro_decoder_new();
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schro_decoder_set_skip_ratio(p_schro_params->decoder, 1);
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if (!p_schro_params->decoder)
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return -1;
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/* Initialize the decoded frame queue. */
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ff_schro_queue_init(&p_schro_params->dec_frame_queue);
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return 0;
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}
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static void libschroedinger_decode_frame_free(void *frame)
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{
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schro_frame_unref(frame);
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}
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static void libschroedinger_handle_first_access_unit(AVCodecContext *avccontext)
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{
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SchroDecoderParams *p_schro_params = avccontext->priv_data;
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SchroDecoder *decoder = p_schro_params->decoder;
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p_schro_params->format = schro_decoder_get_video_format(decoder);
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/* Tell FFmpeg about sequence details. */
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if (av_image_check_size(p_schro_params->format->width,
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p_schro_params->format->height, 0, avccontext) < 0) {
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av_log(avccontext, AV_LOG_ERROR, "invalid dimensions (%dx%d)\n",
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p_schro_params->format->width, p_schro_params->format->height);
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avccontext->height = avccontext->width = 0;
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return;
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}
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avccontext->height = p_schro_params->format->height;
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avccontext->width = p_schro_params->format->width;
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avccontext->pix_fmt = get_chroma_format(p_schro_params->format->chroma_format);
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if (ff_get_schro_frame_format(p_schro_params->format->chroma_format,
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&p_schro_params->frame_format) == -1) {
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av_log(avccontext, AV_LOG_ERROR,
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"This codec currently only supports planar YUV 4:2:0, 4:2:2 "
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"and 4:4:4 formats.\n");
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return;
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}
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avccontext->time_base.den = p_schro_params->format->frame_rate_numerator;
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avccontext->time_base.num = p_schro_params->format->frame_rate_denominator;
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}
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static int libschroedinger_decode_frame(AVCodecContext *avccontext,
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void *data, int *data_size,
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AVPacket *avpkt)
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{
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const uint8_t *buf = avpkt->data;
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int buf_size = avpkt->size;
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int64_t pts = avpkt->pts;
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SchroTag *tag;
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SchroDecoderParams *p_schro_params = avccontext->priv_data;
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SchroDecoder *decoder = p_schro_params->decoder;
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SchroBuffer *enc_buf;
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SchroFrame* frame;
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int state;
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int go = 1;
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int outer = 1;
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SchroParseUnitContext parse_ctx;
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LibSchroFrameContext *framewithpts = NULL;
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*data_size = 0;
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parse_context_init(&parse_ctx, buf, buf_size);
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if (!buf_size) {
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if (!p_schro_params->eos_signalled) {
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state = schro_decoder_push_end_of_stream(decoder);
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p_schro_params->eos_signalled = 1;
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}
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}
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/* Loop through all the individual parse units in the input buffer */
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do {
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if ((enc_buf = find_next_parse_unit(&parse_ctx))) {
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/* Set Schrotag with the pts to be recovered after decoding*/
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enc_buf->tag = schro_tag_new(av_malloc(sizeof(int64_t)), av_free);
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if (!enc_buf->tag->value) {
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av_log(avccontext, AV_LOG_ERROR, "Unable to allocate SchroTag\n");
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return AVERROR(ENOMEM);
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}
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AV_WN(64, enc_buf->tag->value, pts);
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/* Push buffer into decoder. */
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if (SCHRO_PARSE_CODE_IS_PICTURE(enc_buf->data[4]) &&
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SCHRO_PARSE_CODE_NUM_REFS(enc_buf->data[4]) > 0)
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avccontext->has_b_frames = 1;
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state = schro_decoder_push(decoder, enc_buf);
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if (state == SCHRO_DECODER_FIRST_ACCESS_UNIT)
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libschroedinger_handle_first_access_unit(avccontext);
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go = 1;
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} else
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outer = 0;
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while (go) {
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/* Parse data and process result. */
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state = schro_decoder_wait(decoder);
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switch (state) {
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case SCHRO_DECODER_FIRST_ACCESS_UNIT:
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libschroedinger_handle_first_access_unit(avccontext);
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break;
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case SCHRO_DECODER_NEED_BITS:
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/* Need more input data - stop iterating over what we have. */
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go = 0;
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break;
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case SCHRO_DECODER_NEED_FRAME:
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/* Decoder needs a frame - create one and push it in. */
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frame = ff_create_schro_frame(avccontext,
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p_schro_params->frame_format);
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schro_decoder_add_output_picture(decoder, frame);
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break;
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case SCHRO_DECODER_OK:
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/* Pull a frame out of the decoder. */
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tag = schro_decoder_get_picture_tag(decoder);
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frame = schro_decoder_pull(decoder);
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if (frame) {
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/* Add relation between schroframe and pts. */
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framewithpts = av_malloc(sizeof(LibSchroFrameContext));
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if (!framewithpts) {
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av_log(avccontext, AV_LOG_ERROR, "Unable to allocate FrameWithPts\n");
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return AVERROR(ENOMEM);
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}
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framewithpts->frame = frame;
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framewithpts->pts = AV_RN64(tag->value);
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ff_schro_queue_push_back(&p_schro_params->dec_frame_queue,
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framewithpts);
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}
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break;
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case SCHRO_DECODER_EOS:
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go = 0;
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p_schro_params->eos_pulled = 1;
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schro_decoder_reset(decoder);
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outer = 0;
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break;
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case SCHRO_DECODER_ERROR:
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return -1;
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break;
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}
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}
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} while (outer);
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/* Grab next frame to be returned from the top of the queue. */
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framewithpts = ff_schro_queue_pop(&p_schro_params->dec_frame_queue);
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if (framewithpts && framewithpts->frame) {
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if (p_schro_params->dec_frame.data[0])
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avccontext->release_buffer(avccontext, &p_schro_params->dec_frame);
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if (avccontext->get_buffer(avccontext, &p_schro_params->dec_frame) < 0) {
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av_log(avccontext, AV_LOG_ERROR, "Unable to allocate buffer\n");
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return AVERROR(ENOMEM);
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}
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memcpy(p_schro_params->dec_frame.data[0],
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framewithpts->frame->components[0].data,
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framewithpts->frame->components[0].length);
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memcpy(p_schro_params->dec_frame.data[1],
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framewithpts->frame->components[1].data,
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framewithpts->frame->components[1].length);
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memcpy(p_schro_params->dec_frame.data[2],
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framewithpts->frame->components[2].data,
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framewithpts->frame->components[2].length);
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/* Fill frame with current buffer data from Schroedinger. */
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p_schro_params->dec_frame.format = -1; /* Unknown -1 */
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p_schro_params->dec_frame.width = framewithpts->frame->width;
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p_schro_params->dec_frame.height = framewithpts->frame->height;
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p_schro_params->dec_frame.pkt_pts = framewithpts->pts;
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p_schro_params->dec_frame.linesize[0] = framewithpts->frame->components[0].stride;
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p_schro_params->dec_frame.linesize[1] = framewithpts->frame->components[1].stride;
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p_schro_params->dec_frame.linesize[2] = framewithpts->frame->components[2].stride;
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*(AVFrame*)data = p_schro_params->dec_frame;
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*data_size = sizeof(AVFrame);
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/* Now free the frame resources. */
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libschroedinger_decode_frame_free(framewithpts->frame);
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av_free(framewithpts);
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} else {
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data = NULL;
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*data_size = 0;
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}
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return buf_size;
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}
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static av_cold int libschroedinger_decode_close(AVCodecContext *avccontext)
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{
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SchroDecoderParams *p_schro_params = avccontext->priv_data;
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/* Free the decoder. */
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schro_decoder_free(p_schro_params->decoder);
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av_freep(&p_schro_params->format);
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if (p_schro_params->dec_frame.data[0])
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avccontext->release_buffer(avccontext, &p_schro_params->dec_frame);
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/* Free data in the output frame queue. */
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ff_schro_queue_free(&p_schro_params->dec_frame_queue,
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libschroedinger_decode_frame_free);
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return 0;
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}
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static void libschroedinger_flush(AVCodecContext *avccontext)
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{
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/* Got a seek request. Free the decoded frames queue and then reset
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* the decoder */
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SchroDecoderParams *p_schro_params = avccontext->priv_data;
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/* Free data in the output frame queue. */
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ff_schro_queue_free(&p_schro_params->dec_frame_queue,
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libschroedinger_decode_frame_free);
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ff_schro_queue_init(&p_schro_params->dec_frame_queue);
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schro_decoder_reset(p_schro_params->decoder);
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p_schro_params->eos_pulled = 0;
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p_schro_params->eos_signalled = 0;
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}
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AVCodec ff_libschroedinger_decoder = {
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.name = "libschroedinger",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = CODEC_ID_DIRAC,
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.priv_data_size = sizeof(SchroDecoderParams),
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.init = libschroedinger_decode_init,
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.close = libschroedinger_decode_close,
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.decode = libschroedinger_decode_frame,
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.capabilities = CODEC_CAP_DELAY,
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.flush = libschroedinger_flush,
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.long_name = NULL_IF_CONFIG_SMALL("libschroedinger Dirac 2.2"),
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};
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