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b3551b6072
This is in preparation for further commits that will stop using ThreadFrame for frame-threaded codecs that don't use ff_thread_(await|report)_progress(); the API for those codecs having inter-frame depdendencies will live in threadframe.h. Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
583 lines
20 KiB
C
583 lines
20 KiB
C
/*
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* Common mpeg video decoding code
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* Copyright (c) 2000,2001 Fabrice Bellard
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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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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#include <limits.h>
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#include "libavutil/avassert.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/internal.h"
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#include "libavutil/video_enc_params.h"
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#include "avcodec.h"
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#include "internal.h"
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#include "mpegutils.h"
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#include "mpegvideo.h"
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#include "threadframe.h"
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void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx)
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{
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ff_mpv_common_defaults(s);
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s->avctx = avctx;
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s->width = avctx->coded_width;
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s->height = avctx->coded_height;
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s->codec_id = avctx->codec->id;
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s->workaround_bugs = avctx->workaround_bugs;
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/* convert fourcc to upper case */
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s->codec_tag = ff_toupper4(avctx->codec_tag);
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}
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int ff_mpeg_update_thread_context(AVCodecContext *dst,
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const AVCodecContext *src)
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{
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MpegEncContext *const s1 = src->priv_data;
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MpegEncContext *const s = dst->priv_data;
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int ret;
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if (dst == src)
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return 0;
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av_assert0(s != s1);
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// FIXME can parameters change on I-frames?
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// in that case dst may need a reinit
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if (!s->context_initialized) {
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int err;
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memcpy(s, s1, sizeof(*s));
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s->avctx = dst;
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s->bitstream_buffer = NULL;
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s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0;
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if (s1->context_initialized) {
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// s->picture_range_start += MAX_PICTURE_COUNT;
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// s->picture_range_end += MAX_PICTURE_COUNT;
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ff_mpv_idct_init(s);
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if ((err = ff_mpv_common_init(s)) < 0) {
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memset(s, 0, sizeof(*s));
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s->avctx = dst;
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return err;
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}
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}
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}
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if (s->height != s1->height || s->width != s1->width || s->context_reinit) {
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s->height = s1->height;
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s->width = s1->width;
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if ((ret = ff_mpv_common_frame_size_change(s)) < 0)
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return ret;
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}
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s->avctx->coded_height = s1->avctx->coded_height;
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s->avctx->coded_width = s1->avctx->coded_width;
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s->avctx->width = s1->avctx->width;
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s->avctx->height = s1->avctx->height;
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s->quarter_sample = s1->quarter_sample;
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s->coded_picture_number = s1->coded_picture_number;
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s->picture_number = s1->picture_number;
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av_assert0(!s->picture || s->picture != s1->picture);
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if (s->picture)
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for (int i = 0; i < MAX_PICTURE_COUNT; i++) {
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ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
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if (s1->picture && s1->picture[i].f->buf[0] &&
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(ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0)
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return ret;
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}
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#define UPDATE_PICTURE(pic)\
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do {\
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ff_mpeg_unref_picture(s->avctx, &s->pic);\
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if (s1->pic.f && s1->pic.f->buf[0])\
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ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
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else\
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ret = ff_update_picture_tables(&s->pic, &s1->pic);\
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if (ret < 0)\
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return ret;\
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} while (0)
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UPDATE_PICTURE(current_picture);
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UPDATE_PICTURE(last_picture);
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UPDATE_PICTURE(next_picture);
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#define REBASE_PICTURE(pic, new_ctx, old_ctx) \
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((pic && pic >= old_ctx->picture && \
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pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
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&new_ctx->picture[pic - old_ctx->picture] : NULL)
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s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1);
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s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1);
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s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1);
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// Error/bug resilience
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s->workaround_bugs = s1->workaround_bugs;
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s->padding_bug_score = s1->padding_bug_score;
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// MPEG-4 timing info
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memcpy(&s->last_time_base, &s1->last_time_base,
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(char *) &s1->pb_field_time + sizeof(s1->pb_field_time) -
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(char *) &s1->last_time_base);
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// B-frame info
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s->max_b_frames = s1->max_b_frames;
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s->low_delay = s1->low_delay;
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s->droppable = s1->droppable;
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// DivX handling (doesn't work)
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s->divx_packed = s1->divx_packed;
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if (s1->bitstream_buffer) {
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if (s1->bitstream_buffer_size +
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AV_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size) {
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av_fast_malloc(&s->bitstream_buffer,
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&s->allocated_bitstream_buffer_size,
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s1->allocated_bitstream_buffer_size);
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if (!s->bitstream_buffer) {
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s->bitstream_buffer_size = 0;
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return AVERROR(ENOMEM);
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}
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}
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s->bitstream_buffer_size = s1->bitstream_buffer_size;
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memcpy(s->bitstream_buffer, s1->bitstream_buffer,
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s1->bitstream_buffer_size);
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memset(s->bitstream_buffer + s->bitstream_buffer_size, 0,
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AV_INPUT_BUFFER_PADDING_SIZE);
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}
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// linesize-dependent scratch buffer allocation
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if (!s->sc.edge_emu_buffer)
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if (s1->linesize) {
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if (ff_mpeg_framesize_alloc(s->avctx, &s->me,
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&s->sc, s1->linesize) < 0) {
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av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context "
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"scratch buffers.\n");
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return AVERROR(ENOMEM);
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}
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} else {
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av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not "
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"be allocated due to unknown size.\n");
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}
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// MPEG-2/interlacing info
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memcpy(&s->progressive_sequence, &s1->progressive_sequence,
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(char *) &s1->rtp_mode - (char *) &s1->progressive_sequence);
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return 0;
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}
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int ff_mpv_common_frame_size_change(MpegEncContext *s)
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{
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int err = 0;
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if (!s->context_initialized)
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return AVERROR(EINVAL);
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ff_mpv_free_context_frame(s);
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if (s->picture)
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for (int i = 0; i < MAX_PICTURE_COUNT; i++)
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s->picture[i].needs_realloc = 1;
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s->last_picture_ptr =
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s->next_picture_ptr =
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s->current_picture_ptr = NULL;
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// init
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if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence)
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s->mb_height = (s->height + 31) / 32 * 2;
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else
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s->mb_height = (s->height + 15) / 16;
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if ((s->width || s->height) &&
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(err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0)
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goto fail;
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/* set chroma shifts */
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err = av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
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&s->chroma_x_shift,
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&s->chroma_y_shift);
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if (err < 0)
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goto fail;
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if ((err = ff_mpv_init_context_frame(s)))
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goto fail;
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memset(s->thread_context, 0, sizeof(s->thread_context));
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s->thread_context[0] = s;
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if (s->width && s->height) {
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err = ff_mpv_init_duplicate_contexts(s);
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if (err < 0)
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goto fail;
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}
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s->context_reinit = 0;
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return 0;
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fail:
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ff_mpv_free_context_frame(s);
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s->context_reinit = 1;
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return err;
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}
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static int alloc_picture(MpegEncContext *s, Picture *pic)
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{
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return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, 0, 0,
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s->chroma_x_shift, s->chroma_y_shift, s->out_format,
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s->mb_stride, s->mb_width, s->mb_height, s->b8_stride,
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&s->linesize, &s->uvlinesize);
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}
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static void gray_frame(AVFrame *frame)
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{
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int h_chroma_shift, v_chroma_shift;
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av_pix_fmt_get_chroma_sub_sample(frame->format, &h_chroma_shift, &v_chroma_shift);
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for (int i = 0; i < frame->height; i++)
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memset(frame->data[0] + frame->linesize[0] * i, 0x80, frame->width);
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for (int i = 0; i < AV_CEIL_RSHIFT(frame->height, v_chroma_shift); i++) {
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memset(frame->data[1] + frame->linesize[1] * i,
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0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
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memset(frame->data[2] + frame->linesize[2] * i,
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0x80, AV_CEIL_RSHIFT(frame->width, h_chroma_shift));
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}
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}
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/**
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* generic function called after decoding
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* the header and before a frame is decoded.
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*/
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int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx)
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{
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Picture *pic;
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int idx, ret;
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s->mb_skipped = 0;
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if (!ff_thread_can_start_frame(avctx)) {
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av_log(avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
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return -1;
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}
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/* mark & release old frames */
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if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr &&
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s->last_picture_ptr != s->next_picture_ptr &&
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s->last_picture_ptr->f->buf[0]) {
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ff_mpeg_unref_picture(s->avctx, s->last_picture_ptr);
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}
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/* release forgotten pictures */
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/* if (MPEG-124 / H.263) */
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for (int i = 0; i < MAX_PICTURE_COUNT; i++) {
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if (&s->picture[i] != s->last_picture_ptr &&
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&s->picture[i] != s->next_picture_ptr &&
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s->picture[i].reference && !s->picture[i].needs_realloc) {
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ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
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}
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}
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ff_mpeg_unref_picture(s->avctx, &s->current_picture);
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ff_mpeg_unref_picture(s->avctx, &s->last_picture);
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ff_mpeg_unref_picture(s->avctx, &s->next_picture);
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/* release non reference frames */
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for (int i = 0; i < MAX_PICTURE_COUNT; i++) {
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if (!s->picture[i].reference)
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ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
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}
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if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) {
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// we already have an unused image
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// (maybe it was set before reading the header)
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pic = s->current_picture_ptr;
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} else {
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idx = ff_find_unused_picture(s->avctx, s->picture, 0);
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if (idx < 0) {
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av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
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return idx;
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}
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pic = &s->picture[idx];
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}
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pic->reference = 0;
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if (!s->droppable) {
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if (s->pict_type != AV_PICTURE_TYPE_B)
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pic->reference = 3;
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}
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pic->f->coded_picture_number = s->coded_picture_number++;
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if (alloc_picture(s, pic) < 0)
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return -1;
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s->current_picture_ptr = pic;
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// FIXME use only the vars from current_pic
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s->current_picture_ptr->f->top_field_first = s->top_field_first;
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if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO ||
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s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
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if (s->picture_structure != PICT_FRAME)
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s->current_picture_ptr->f->top_field_first =
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(s->picture_structure == PICT_TOP_FIELD) == s->first_field;
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}
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s->current_picture_ptr->f->interlaced_frame = !s->progressive_frame &&
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!s->progressive_sequence;
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s->current_picture_ptr->field_picture = s->picture_structure != PICT_FRAME;
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s->current_picture_ptr->f->pict_type = s->pict_type;
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// if (s->avctx->flags && AV_CODEC_FLAG_QSCALE)
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// s->current_picture_ptr->quality = s->new_picture_ptr->quality;
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s->current_picture_ptr->f->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
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if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture,
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s->current_picture_ptr)) < 0)
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return ret;
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if (s->pict_type != AV_PICTURE_TYPE_B) {
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s->last_picture_ptr = s->next_picture_ptr;
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if (!s->droppable)
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s->next_picture_ptr = s->current_picture_ptr;
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}
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ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n",
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s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr,
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s->last_picture_ptr ? s->last_picture_ptr->f->data[0] : NULL,
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s->next_picture_ptr ? s->next_picture_ptr->f->data[0] : NULL,
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s->current_picture_ptr ? s->current_picture_ptr->f->data[0] : NULL,
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s->pict_type, s->droppable);
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if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) &&
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(s->pict_type != AV_PICTURE_TYPE_I)) {
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int h_chroma_shift, v_chroma_shift;
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av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt,
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&h_chroma_shift, &v_chroma_shift);
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if (s->pict_type == AV_PICTURE_TYPE_B && s->next_picture_ptr && s->next_picture_ptr->f->buf[0])
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av_log(avctx, AV_LOG_DEBUG,
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"allocating dummy last picture for B frame\n");
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else if (s->pict_type != AV_PICTURE_TYPE_I)
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av_log(avctx, AV_LOG_ERROR,
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"warning: first frame is no keyframe\n");
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/* Allocate a dummy frame */
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idx = ff_find_unused_picture(s->avctx, s->picture, 0);
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if (idx < 0) {
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av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
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return idx;
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}
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s->last_picture_ptr = &s->picture[idx];
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s->last_picture_ptr->reference = 3;
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s->last_picture_ptr->f->key_frame = 0;
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s->last_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
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if (alloc_picture(s, s->last_picture_ptr) < 0) {
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s->last_picture_ptr = NULL;
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return -1;
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}
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|
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if (!avctx->hwaccel) {
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for (int i = 0; i < avctx->height; i++)
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memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0]*i,
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0x80, avctx->width);
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if (s->last_picture_ptr->f->data[2]) {
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for (int i = 0; i < AV_CEIL_RSHIFT(avctx->height, v_chroma_shift); i++) {
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memset(s->last_picture_ptr->f->data[1] + s->last_picture_ptr->f->linesize[1]*i,
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0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
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memset(s->last_picture_ptr->f->data[2] + s->last_picture_ptr->f->linesize[2]*i,
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0x80, AV_CEIL_RSHIFT(avctx->width, h_chroma_shift));
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}
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}
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if (s->codec_id == AV_CODEC_ID_FLV1 || s->codec_id == AV_CODEC_ID_H263) {
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for (int i = 0; i < avctx->height; i++)
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memset(s->last_picture_ptr->f->data[0] + s->last_picture_ptr->f->linesize[0] * i,
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16, avctx->width);
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}
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}
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ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0);
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ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1);
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}
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if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) &&
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s->pict_type == AV_PICTURE_TYPE_B) {
|
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/* Allocate a dummy frame */
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idx = ff_find_unused_picture(s->avctx, s->picture, 0);
|
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if (idx < 0) {
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av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n");
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return idx;
|
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}
|
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s->next_picture_ptr = &s->picture[idx];
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|
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s->next_picture_ptr->reference = 3;
|
|
s->next_picture_ptr->f->key_frame = 0;
|
|
s->next_picture_ptr->f->pict_type = AV_PICTURE_TYPE_P;
|
|
|
|
if (alloc_picture(s, s->next_picture_ptr) < 0) {
|
|
s->next_picture_ptr = NULL;
|
|
return -1;
|
|
}
|
|
ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0);
|
|
ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1);
|
|
}
|
|
|
|
#if 0 // BUFREF-FIXME
|
|
memset(s->last_picture.f->data, 0, sizeof(s->last_picture.f->data));
|
|
memset(s->next_picture.f->data, 0, sizeof(s->next_picture.f->data));
|
|
#endif
|
|
if (s->last_picture_ptr) {
|
|
if (s->last_picture_ptr->f->buf[0] &&
|
|
(ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture,
|
|
s->last_picture_ptr)) < 0)
|
|
return ret;
|
|
}
|
|
if (s->next_picture_ptr) {
|
|
if (s->next_picture_ptr->f->buf[0] &&
|
|
(ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture,
|
|
s->next_picture_ptr)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
av_assert0(s->pict_type == AV_PICTURE_TYPE_I || (s->last_picture_ptr &&
|
|
s->last_picture_ptr->f->buf[0]));
|
|
|
|
if (s->picture_structure != PICT_FRAME) {
|
|
for (int i = 0; i < 4; i++) {
|
|
if (s->picture_structure == PICT_BOTTOM_FIELD) {
|
|
s->current_picture.f->data[i] +=
|
|
s->current_picture.f->linesize[i];
|
|
}
|
|
s->current_picture.f->linesize[i] *= 2;
|
|
s->last_picture.f->linesize[i] *= 2;
|
|
s->next_picture.f->linesize[i] *= 2;
|
|
}
|
|
}
|
|
|
|
/* set dequantizer, we can't do it during init as
|
|
* it might change for MPEG-4 and we can't do it in the header
|
|
* decode as init is not called for MPEG-4 there yet */
|
|
if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
|
|
s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra;
|
|
s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter;
|
|
} else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) {
|
|
s->dct_unquantize_intra = s->dct_unquantize_h263_intra;
|
|
s->dct_unquantize_inter = s->dct_unquantize_h263_inter;
|
|
} else {
|
|
s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra;
|
|
s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter;
|
|
}
|
|
|
|
if (s->avctx->debug & FF_DEBUG_NOMC)
|
|
gray_frame(s->current_picture_ptr->f);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* called after a frame has been decoded. */
|
|
void ff_mpv_frame_end(MpegEncContext *s)
|
|
{
|
|
emms_c();
|
|
|
|
if (s->current_picture.reference)
|
|
ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0);
|
|
}
|
|
|
|
void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict)
|
|
{
|
|
ff_print_debug_info2(s->avctx, pict, s->mbskip_table, p->mb_type,
|
|
p->qscale_table, p->motion_val,
|
|
s->mb_width, s->mb_height, s->mb_stride, s->quarter_sample);
|
|
}
|
|
|
|
int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type)
|
|
{
|
|
AVVideoEncParams *par;
|
|
int mult = (qp_type == FF_QSCALE_TYPE_MPEG1) ? 2 : 1;
|
|
unsigned int nb_mb = p->alloc_mb_height * p->alloc_mb_width;
|
|
|
|
if (!(s->avctx->export_side_data & AV_CODEC_EXPORT_DATA_VIDEO_ENC_PARAMS))
|
|
return 0;
|
|
|
|
par = av_video_enc_params_create_side_data(f, AV_VIDEO_ENC_PARAMS_MPEG2, nb_mb);
|
|
if (!par)
|
|
return AVERROR(ENOMEM);
|
|
|
|
for (unsigned y = 0; y < p->alloc_mb_height; y++)
|
|
for (unsigned x = 0; x < p->alloc_mb_width; x++) {
|
|
const unsigned int block_idx = y * p->alloc_mb_width + x;
|
|
const unsigned int mb_xy = y * p->alloc_mb_stride + x;
|
|
AVVideoBlockParams *const b = av_video_enc_params_block(par, block_idx);
|
|
|
|
b->src_x = x * 16;
|
|
b->src_y = y * 16;
|
|
b->w = 16;
|
|
b->h = 16;
|
|
|
|
b->delta_qp = p->qscale_table[mb_xy] * mult;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
|
|
{
|
|
ff_draw_horiz_band(s->avctx, s->current_picture_ptr->f,
|
|
s->last_picture_ptr ? s->last_picture_ptr->f : NULL,
|
|
y, h, s->picture_structure,
|
|
s->first_field, s->low_delay);
|
|
}
|
|
|
|
void ff_mpeg_flush(AVCodecContext *avctx)
|
|
{
|
|
MpegEncContext *const s = avctx->priv_data;
|
|
|
|
if (!s->picture)
|
|
return;
|
|
|
|
for (int i = 0; i < MAX_PICTURE_COUNT; i++)
|
|
ff_mpeg_unref_picture(s->avctx, &s->picture[i]);
|
|
s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL;
|
|
|
|
ff_mpeg_unref_picture(s->avctx, &s->current_picture);
|
|
ff_mpeg_unref_picture(s->avctx, &s->last_picture);
|
|
ff_mpeg_unref_picture(s->avctx, &s->next_picture);
|
|
|
|
s->mb_x = s->mb_y = 0;
|
|
|
|
#if FF_API_FLAG_TRUNCATED
|
|
s->parse_context.state = -1;
|
|
s->parse_context.frame_start_found = 0;
|
|
s->parse_context.overread = 0;
|
|
s->parse_context.overread_index = 0;
|
|
s->parse_context.index = 0;
|
|
s->parse_context.last_index = 0;
|
|
#endif
|
|
s->bitstream_buffer_size = 0;
|
|
s->pp_time = 0;
|
|
}
|
|
|
|
void ff_mpv_report_decode_progress(MpegEncContext *s)
|
|
{
|
|
if (s->pict_type != AV_PICTURE_TYPE_B && !s->partitioned_frame && !s->er.error_occurred)
|
|
ff_thread_report_progress(&s->current_picture_ptr->tf, s->mb_y, 0);
|
|
}
|