mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-12 19:18:44 +02:00
e724bdfffb
Commit b46a77f19d
accidentally broke this (requested change that was
added to the patch later and which was not fully tested).
Signed-off-by: Mark Thompson <sw@jkqxz.net>
1292 lines
38 KiB
C
1292 lines
38 KiB
C
/*
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* generic decoding-related code
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 <stdint.h>
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#include <string.h>
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#include "config.h"
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#include "libavutil/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/common.h"
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#include "libavutil/frame.h"
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#include "libavutil/hwcontext.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/intmath.h"
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#include "avcodec.h"
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#include "bytestream.h"
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#include "decode.h"
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#include "internal.h"
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#include "thread.h"
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static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
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{
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int size = 0, ret;
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const uint8_t *data;
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uint32_t flags;
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data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
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if (!data)
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return 0;
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if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
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av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
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"changes, but PARAM_CHANGE side data was sent to it.\n");
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ret = AVERROR(EINVAL);
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goto fail2;
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}
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if (size < 4)
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goto fail;
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flags = bytestream_get_le32(&data);
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size -= 4;
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if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
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if (size < 4)
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goto fail;
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avctx->channels = bytestream_get_le32(&data);
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size -= 4;
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}
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if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
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if (size < 8)
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goto fail;
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avctx->channel_layout = bytestream_get_le64(&data);
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size -= 8;
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}
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if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
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if (size < 4)
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goto fail;
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avctx->sample_rate = bytestream_get_le32(&data);
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size -= 4;
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}
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if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
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if (size < 8)
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goto fail;
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avctx->width = bytestream_get_le32(&data);
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avctx->height = bytestream_get_le32(&data);
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size -= 8;
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ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
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if (ret < 0)
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goto fail2;
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}
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return 0;
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fail:
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av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
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ret = AVERROR_INVALIDDATA;
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fail2:
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if (ret < 0) {
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av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
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if (avctx->err_recognition & AV_EF_EXPLODE)
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return ret;
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}
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return 0;
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}
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static int extract_packet_props(AVCodecInternal *avci, const AVPacket *pkt)
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{
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av_packet_unref(avci->last_pkt_props);
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if (pkt)
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return av_packet_copy_props(avci->last_pkt_props, pkt);
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return 0;
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}
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static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
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{
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int ret;
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/* move the original frame to our backup */
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av_frame_unref(avci->to_free);
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av_frame_move_ref(avci->to_free, frame);
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/* now copy everything except the AVBufferRefs back
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* note that we make a COPY of the side data, so calling av_frame_free() on
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* the caller's frame will work properly */
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ret = av_frame_copy_props(frame, avci->to_free);
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if (ret < 0)
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return ret;
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memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
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memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
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if (avci->to_free->extended_data != avci->to_free->data) {
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int planes = av_get_channel_layout_nb_channels(avci->to_free->channel_layout);
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int size = planes * sizeof(*frame->extended_data);
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if (!size) {
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av_frame_unref(frame);
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return AVERROR_BUG;
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}
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frame->extended_data = av_malloc(size);
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if (!frame->extended_data) {
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av_frame_unref(frame);
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return AVERROR(ENOMEM);
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}
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memcpy(frame->extended_data, avci->to_free->extended_data,
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size);
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} else
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frame->extended_data = frame->data;
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frame->format = avci->to_free->format;
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frame->width = avci->to_free->width;
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frame->height = avci->to_free->height;
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frame->channel_layout = avci->to_free->channel_layout;
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frame->nb_samples = avci->to_free->nb_samples;
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return 0;
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}
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static int bsfs_init(AVCodecContext *avctx)
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{
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AVCodecInternal *avci = avctx->internal;
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DecodeFilterContext *s = &avci->filter;
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const char *bsfs_str;
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int ret;
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if (s->nb_bsfs)
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return 0;
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bsfs_str = avctx->codec->bsfs ? avctx->codec->bsfs : "null";
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while (bsfs_str && *bsfs_str) {
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AVBSFContext **tmp;
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const AVBitStreamFilter *filter;
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char *bsf;
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bsf = av_get_token(&bsfs_str, ",");
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if (!bsf) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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filter = av_bsf_get_by_name(bsf);
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if (!filter) {
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av_log(avctx, AV_LOG_ERROR, "A non-existing bitstream filter %s "
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"requested by a decoder. This is a bug, please report it.\n",
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bsf);
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ret = AVERROR_BUG;
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av_freep(&bsf);
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goto fail;
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}
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av_freep(&bsf);
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tmp = av_realloc_array(s->bsfs, s->nb_bsfs + 1, sizeof(*s->bsfs));
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if (!tmp) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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s->bsfs = tmp;
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s->nb_bsfs++;
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ret = av_bsf_alloc(filter, &s->bsfs[s->nb_bsfs - 1]);
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if (ret < 0)
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goto fail;
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if (s->nb_bsfs == 1) {
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/* We do not currently have an API for passing the input timebase into decoders,
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* but no filters used here should actually need it.
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* So we make up some plausible-looking number (the MPEG 90kHz timebase) */
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s->bsfs[s->nb_bsfs - 1]->time_base_in = (AVRational){ 1, 90000 };
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ret = avcodec_parameters_from_context(s->bsfs[s->nb_bsfs - 1]->par_in,
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avctx);
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} else {
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s->bsfs[s->nb_bsfs - 1]->time_base_in = s->bsfs[s->nb_bsfs - 2]->time_base_out;
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ret = avcodec_parameters_copy(s->bsfs[s->nb_bsfs - 1]->par_in,
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s->bsfs[s->nb_bsfs - 2]->par_out);
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}
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if (ret < 0)
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goto fail;
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ret = av_bsf_init(s->bsfs[s->nb_bsfs - 1]);
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if (ret < 0)
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goto fail;
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}
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return 0;
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fail:
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ff_decode_bsfs_uninit(avctx);
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return ret;
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}
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/* try to get one output packet from the filter chain */
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static int bsfs_poll(AVCodecContext *avctx, AVPacket *pkt)
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{
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DecodeFilterContext *s = &avctx->internal->filter;
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int idx, ret;
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/* start with the last filter in the chain */
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idx = s->nb_bsfs - 1;
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while (idx >= 0) {
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/* request a packet from the currently selected filter */
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ret = av_bsf_receive_packet(s->bsfs[idx], pkt);
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if (ret == AVERROR(EAGAIN)) {
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/* no packets available, try the next filter up the chain */
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ret = 0;
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idx--;
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continue;
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} else if (ret < 0 && ret != AVERROR_EOF) {
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return ret;
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}
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/* got a packet or EOF -- pass it to the caller or to the next filter
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* down the chain */
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if (idx == s->nb_bsfs - 1) {
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return ret;
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} else {
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idx++;
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ret = av_bsf_send_packet(s->bsfs[idx], ret < 0 ? NULL : pkt);
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if (ret < 0) {
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av_log(avctx, AV_LOG_ERROR,
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"Error pre-processing a packet before decoding\n");
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av_packet_unref(pkt);
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return ret;
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}
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}
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}
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return AVERROR(EAGAIN);
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}
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int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt)
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{
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AVCodecInternal *avci = avctx->internal;
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int ret;
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if (avci->draining)
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return AVERROR_EOF;
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ret = bsfs_poll(avctx, pkt);
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if (ret == AVERROR_EOF)
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avci->draining = 1;
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if (ret < 0)
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return ret;
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ret = extract_packet_props(avctx->internal, pkt);
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if (ret < 0)
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goto finish;
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ret = apply_param_change(avctx, pkt);
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if (ret < 0)
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goto finish;
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if (avctx->codec->receive_frame)
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avci->compat_decode_consumed += pkt->size;
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return 0;
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finish:
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av_packet_unref(pkt);
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return ret;
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}
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/*
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* The core of the receive_frame_wrapper for the decoders implementing
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* the simple API. Certain decoders might consume partial packets without
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* returning any output, so this function needs to be called in a loop until it
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* returns EAGAIN.
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**/
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static int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame)
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{
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AVCodecInternal *avci = avctx->internal;
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DecodeSimpleContext *ds = &avci->ds;
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AVPacket *pkt = ds->in_pkt;
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int got_frame;
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int ret;
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if (!pkt->data && !avci->draining) {
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av_packet_unref(pkt);
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ret = ff_decode_get_packet(avctx, pkt);
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if (ret < 0 && ret != AVERROR_EOF)
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return ret;
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}
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// Some codecs (at least wma lossless) will crash when feeding drain packets
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// after EOF was signaled.
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if (avci->draining_done)
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return AVERROR_EOF;
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if (!pkt->data &&
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!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY ||
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avctx->active_thread_type & FF_THREAD_FRAME))
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return AVERROR_EOF;
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got_frame = 0;
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if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) {
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ret = ff_thread_decode_frame(avctx, frame, &got_frame, pkt);
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} else {
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ret = avctx->codec->decode(avctx, frame, &got_frame, pkt);
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if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS))
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frame->pkt_dts = pkt->dts;
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/* get_buffer is supposed to set frame parameters */
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if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
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frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
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frame->width = avctx->width;
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frame->height = avctx->height;
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frame->format = avctx->codec->type == AVMEDIA_TYPE_VIDEO ?
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avctx->pix_fmt : avctx->sample_fmt;
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}
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}
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emms_c();
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|
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if (!got_frame)
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av_frame_unref(frame);
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if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO)
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ret = pkt->size;
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|
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if (avctx->internal->draining && !got_frame)
|
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avci->draining_done = 1;
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|
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avci->compat_decode_consumed += ret;
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|
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if (ret >= pkt->size || ret < 0) {
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av_packet_unref(pkt);
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} else {
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int consumed = ret;
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|
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pkt->data += consumed;
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pkt->size -= consumed;
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pkt->pts = AV_NOPTS_VALUE;
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pkt->dts = AV_NOPTS_VALUE;
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avci->last_pkt_props->pts = AV_NOPTS_VALUE;
|
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avci->last_pkt_props->dts = AV_NOPTS_VALUE;
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}
|
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|
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if (got_frame)
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av_assert0(frame->buf[0]);
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|
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return ret < 0 ? ret : 0;
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}
|
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|
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static int decode_simple_receive_frame(AVCodecContext *avctx, AVFrame *frame)
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{
|
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int ret;
|
|
|
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while (!frame->buf[0]) {
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ret = decode_simple_internal(avctx, frame);
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if (ret < 0)
|
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return ret;
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}
|
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|
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return 0;
|
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}
|
|
|
|
static int decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
AVCodecInternal *avci = avctx->internal;
|
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int ret;
|
|
|
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av_assert0(!frame->buf[0]);
|
|
|
|
if (avctx->codec->receive_frame)
|
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ret = avctx->codec->receive_frame(avctx, frame);
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else
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ret = decode_simple_receive_frame(avctx, frame);
|
|
|
|
if (ret == AVERROR_EOF)
|
|
avci->draining_done = 1;
|
|
|
|
/* unwrap the per-frame decode data and restore the original opaque_ref*/
|
|
if (!ret) {
|
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/* the only case where decode data is not set should be decoders
|
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* that do not call ff_get_buffer() */
|
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av_assert0((frame->opaque_ref && frame->opaque_ref->size == sizeof(FrameDecodeData)) ||
|
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!(avctx->codec->capabilities & AV_CODEC_CAP_DR1));
|
|
|
|
if (frame->opaque_ref) {
|
|
FrameDecodeData *fdd;
|
|
AVBufferRef *user_opaque_ref;
|
|
|
|
fdd = (FrameDecodeData*)frame->opaque_ref->data;
|
|
|
|
if (fdd->post_process) {
|
|
ret = fdd->post_process(avctx, frame);
|
|
if (ret < 0) {
|
|
av_frame_unref(frame);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
user_opaque_ref = fdd->user_opaque_ref;
|
|
fdd->user_opaque_ref = NULL;
|
|
av_buffer_unref(&frame->opaque_ref);
|
|
frame->opaque_ref = user_opaque_ref;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
|
|
{
|
|
AVCodecInternal *avci = avctx->internal;
|
|
int ret = 0;
|
|
|
|
if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
|
|
return AVERROR(EINVAL);
|
|
|
|
if (avctx->internal->draining)
|
|
return AVERROR_EOF;
|
|
|
|
ret = bsfs_init(avctx);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
av_packet_unref(avci->buffer_pkt);
|
|
if (avpkt && (avpkt->data || avpkt->side_data_elems)) {
|
|
ret = av_packet_ref(avci->buffer_pkt, avpkt);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
ret = av_bsf_send_packet(avci->filter.bsfs[0], avci->buffer_pkt);
|
|
if (ret < 0) {
|
|
av_packet_unref(avci->buffer_pkt);
|
|
return ret;
|
|
}
|
|
|
|
if (!avci->buffer_frame->buf[0]) {
|
|
ret = decode_receive_frame_internal(avctx, avci->buffer_frame);
|
|
if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int apply_cropping(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
/* make sure we are noisy about decoders returning invalid cropping data */
|
|
if (frame->crop_left >= INT_MAX - frame->crop_right ||
|
|
frame->crop_top >= INT_MAX - frame->crop_bottom ||
|
|
(frame->crop_left + frame->crop_right) >= frame->width ||
|
|
(frame->crop_top + frame->crop_bottom) >= frame->height) {
|
|
av_log(avctx, AV_LOG_WARNING,
|
|
"Invalid cropping information set by a decoder: %zu/%zu/%zu/%zu "
|
|
"(frame size %dx%d). This is a bug, please report it\n",
|
|
frame->crop_left, frame->crop_right, frame->crop_top, frame->crop_bottom,
|
|
frame->width, frame->height);
|
|
frame->crop_left = 0;
|
|
frame->crop_right = 0;
|
|
frame->crop_top = 0;
|
|
frame->crop_bottom = 0;
|
|
return 0;
|
|
}
|
|
|
|
if (!avctx->apply_cropping)
|
|
return 0;
|
|
|
|
return av_frame_apply_cropping(frame, avctx->flags & AV_CODEC_FLAG_UNALIGNED ?
|
|
AV_FRAME_CROP_UNALIGNED : 0);
|
|
}
|
|
|
|
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
AVCodecInternal *avci = avctx->internal;
|
|
int ret;
|
|
|
|
av_frame_unref(frame);
|
|
|
|
if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
|
|
return AVERROR(EINVAL);
|
|
|
|
ret = bsfs_init(avctx);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (avci->buffer_frame->buf[0]) {
|
|
av_frame_move_ref(frame, avci->buffer_frame);
|
|
} else {
|
|
ret = decode_receive_frame_internal(avctx, frame);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
ret = apply_cropping(avctx, frame);
|
|
if (ret < 0) {
|
|
av_frame_unref(frame);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
avctx->frame_number++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int compat_decode(AVCodecContext *avctx, AVFrame *frame,
|
|
int *got_frame, AVPacket *pkt)
|
|
{
|
|
AVCodecInternal *avci = avctx->internal;
|
|
int ret = 0;
|
|
|
|
av_assert0(avci->compat_decode_consumed == 0);
|
|
|
|
*got_frame = 0;
|
|
avci->compat_decode = 1;
|
|
|
|
if (avci->compat_decode_partial_size > 0 &&
|
|
avci->compat_decode_partial_size != pkt->size) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Got unexpected packet size after a partial decode\n");
|
|
ret = AVERROR(EINVAL);
|
|
goto finish;
|
|
}
|
|
|
|
if (!avci->compat_decode_partial_size) {
|
|
ret = avcodec_send_packet(avctx, pkt);
|
|
if (ret == AVERROR_EOF)
|
|
ret = 0;
|
|
else if (ret == AVERROR(EAGAIN)) {
|
|
/* we fully drain all the output in each decode call, so this should not
|
|
* ever happen */
|
|
ret = AVERROR_BUG;
|
|
goto finish;
|
|
} else if (ret < 0)
|
|
goto finish;
|
|
}
|
|
|
|
while (ret >= 0) {
|
|
ret = avcodec_receive_frame(avctx, frame);
|
|
if (ret < 0) {
|
|
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
|
|
ret = 0;
|
|
goto finish;
|
|
}
|
|
|
|
if (frame != avci->compat_decode_frame) {
|
|
if (!avctx->refcounted_frames) {
|
|
ret = unrefcount_frame(avci, frame);
|
|
if (ret < 0)
|
|
goto finish;
|
|
}
|
|
|
|
*got_frame = 1;
|
|
frame = avci->compat_decode_frame;
|
|
} else {
|
|
if (!avci->compat_decode_warned) {
|
|
av_log(avctx, AV_LOG_WARNING, "The deprecated avcodec_decode_* "
|
|
"API cannot return all the frames for this decoder. "
|
|
"Some frames will be dropped. Update your code to the "
|
|
"new decoding API to fix this.\n");
|
|
avci->compat_decode_warned = 1;
|
|
}
|
|
}
|
|
|
|
if (avci->draining || (!avctx->codec->bsfs && avci->compat_decode_consumed < pkt->size))
|
|
break;
|
|
}
|
|
|
|
finish:
|
|
if (ret == 0) {
|
|
/* if there are any bsfs then assume full packet is always consumed */
|
|
if (avctx->codec->bsfs)
|
|
ret = pkt->size;
|
|
else
|
|
ret = FFMIN(avci->compat_decode_consumed, pkt->size);
|
|
}
|
|
avci->compat_decode_consumed = 0;
|
|
avci->compat_decode_partial_size = (ret >= 0) ? pkt->size - ret : 0;
|
|
|
|
return ret;
|
|
}
|
|
|
|
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
|
|
int *got_picture_ptr,
|
|
AVPacket *avpkt)
|
|
{
|
|
return compat_decode(avctx, picture, got_picture_ptr, avpkt);
|
|
}
|
|
|
|
int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
|
|
AVFrame *frame,
|
|
int *got_frame_ptr,
|
|
AVPacket *avpkt)
|
|
{
|
|
return compat_decode(avctx, frame, got_frame_ptr, avpkt);
|
|
}
|
|
|
|
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
|
|
int *got_sub_ptr,
|
|
AVPacket *avpkt)
|
|
{
|
|
int ret;
|
|
|
|
ret = extract_packet_props(avctx->internal, avpkt);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
*got_sub_ptr = 0;
|
|
ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
|
|
if (*got_sub_ptr)
|
|
avctx->frame_number++;
|
|
return ret;
|
|
}
|
|
|
|
static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
|
|
{
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
|
|
return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
|
|
}
|
|
|
|
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
|
|
{
|
|
while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
|
|
++fmt;
|
|
return fmt[0];
|
|
}
|
|
|
|
static AVHWAccel *find_hwaccel(enum AVCodecID codec_id,
|
|
enum AVPixelFormat pix_fmt)
|
|
{
|
|
AVHWAccel *hwaccel = NULL;
|
|
|
|
while ((hwaccel = av_hwaccel_next(hwaccel)))
|
|
if (hwaccel->id == codec_id
|
|
&& hwaccel->pix_fmt == pix_fmt)
|
|
return hwaccel;
|
|
return NULL;
|
|
}
|
|
|
|
int ff_decode_get_hw_frames_ctx(AVCodecContext *avctx,
|
|
enum AVHWDeviceType dev_type)
|
|
{
|
|
AVHWDeviceContext *device_ctx;
|
|
AVHWFramesContext *frames_ctx;
|
|
int ret;
|
|
|
|
if (!avctx->hwaccel)
|
|
return AVERROR(ENOSYS);
|
|
|
|
if (avctx->hw_frames_ctx)
|
|
return 0;
|
|
if (!avctx->hw_device_ctx) {
|
|
av_log(avctx, AV_LOG_ERROR, "A hardware frames or device context is "
|
|
"required for hardware accelerated decoding.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
device_ctx = (AVHWDeviceContext *)avctx->hw_device_ctx->data;
|
|
if (device_ctx->type != dev_type) {
|
|
av_log(avctx, AV_LOG_ERROR, "Device type %s expected for hardware "
|
|
"decoding, but got %s.\n", av_hwdevice_get_type_name(dev_type),
|
|
av_hwdevice_get_type_name(device_ctx->type));
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
ret = avcodec_get_hw_frames_parameters(avctx,
|
|
avctx->hw_device_ctx,
|
|
avctx->hwaccel->pix_fmt,
|
|
&avctx->hw_frames_ctx);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
|
|
|
|
|
|
if (frames_ctx->initial_pool_size) {
|
|
// We guarantee 4 base work surfaces. The function above guarantees 1
|
|
// (the absolute minimum), so add the missing count.
|
|
frames_ctx->initial_pool_size += 3;
|
|
|
|
// Add an additional surface per thread is frame threading is enabled.
|
|
if (avctx->active_thread_type & FF_THREAD_FRAME)
|
|
frames_ctx->initial_pool_size += avctx->thread_count;
|
|
}
|
|
|
|
ret = av_hwframe_ctx_init(avctx->hw_frames_ctx);
|
|
if (ret < 0) {
|
|
av_buffer_unref(&avctx->hw_frames_ctx);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int avcodec_get_hw_frames_parameters(AVCodecContext *avctx,
|
|
AVBufferRef *device_ref,
|
|
enum AVPixelFormat hw_pix_fmt,
|
|
AVBufferRef **out_frames_ref)
|
|
{
|
|
AVBufferRef *frames_ref = NULL;
|
|
AVHWAccel *hwa = find_hwaccel(avctx->codec_id, hw_pix_fmt);
|
|
int ret;
|
|
|
|
if (!hwa || !hwa->frame_params)
|
|
return AVERROR(ENOENT);
|
|
|
|
frames_ref = av_hwframe_ctx_alloc(device_ref);
|
|
if (!frames_ref)
|
|
return AVERROR(ENOMEM);
|
|
|
|
ret = hwa->frame_params(avctx, frames_ref);
|
|
if (ret >= 0) {
|
|
*out_frames_ref = frames_ref;
|
|
} else {
|
|
av_buffer_unref(&frames_ref);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int setup_hwaccel(AVCodecContext *avctx,
|
|
const enum AVPixelFormat fmt,
|
|
const char *name)
|
|
{
|
|
AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
|
|
int ret = 0;
|
|
|
|
if (!hwa) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Could not find an AVHWAccel for the pixel format: %s",
|
|
name);
|
|
return AVERROR(ENOENT);
|
|
}
|
|
|
|
if (hwa->priv_data_size) {
|
|
avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size);
|
|
if (!avctx->internal->hwaccel_priv_data)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
avctx->hwaccel = hwa;
|
|
if (hwa->init) {
|
|
ret = hwa->init(avctx);
|
|
if (ret < 0) {
|
|
av_freep(&avctx->internal->hwaccel_priv_data);
|
|
avctx->hwaccel = NULL;
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
|
|
{
|
|
const AVPixFmtDescriptor *desc;
|
|
enum AVPixelFormat *choices;
|
|
enum AVPixelFormat ret;
|
|
unsigned n = 0;
|
|
|
|
while (fmt[n] != AV_PIX_FMT_NONE)
|
|
++n;
|
|
|
|
av_assert0(n >= 1);
|
|
avctx->sw_pix_fmt = fmt[n - 1];
|
|
av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt));
|
|
|
|
choices = av_malloc_array(n + 1, sizeof(*choices));
|
|
if (!choices)
|
|
return AV_PIX_FMT_NONE;
|
|
|
|
memcpy(choices, fmt, (n + 1) * sizeof(*choices));
|
|
|
|
for (;;) {
|
|
if (avctx->hwaccel && avctx->hwaccel->uninit)
|
|
avctx->hwaccel->uninit(avctx);
|
|
av_freep(&avctx->internal->hwaccel_priv_data);
|
|
avctx->hwaccel = NULL;
|
|
|
|
av_buffer_unref(&avctx->hw_frames_ctx);
|
|
|
|
ret = avctx->get_format(avctx, choices);
|
|
|
|
desc = av_pix_fmt_desc_get(ret);
|
|
if (!desc) {
|
|
ret = AV_PIX_FMT_NONE;
|
|
break;
|
|
}
|
|
|
|
if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
|
|
break;
|
|
|
|
if (avctx->hw_frames_ctx) {
|
|
AVHWFramesContext *hw_frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
|
|
if (hw_frames_ctx->format != ret) {
|
|
av_log(avctx, AV_LOG_ERROR, "Format returned from get_buffer() "
|
|
"does not match the format of provided AVHWFramesContext\n");
|
|
ret = AV_PIX_FMT_NONE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!setup_hwaccel(avctx, ret, desc->name))
|
|
break;
|
|
|
|
/* Remove failed hwaccel from choices */
|
|
for (n = 0; choices[n] != ret; n++)
|
|
av_assert0(choices[n] != AV_PIX_FMT_NONE);
|
|
|
|
do
|
|
choices[n] = choices[n + 1];
|
|
while (choices[n++] != AV_PIX_FMT_NONE);
|
|
}
|
|
|
|
av_freep(&choices);
|
|
return ret;
|
|
}
|
|
|
|
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
FramePool *pool = avctx->internal->pool;
|
|
int i, ret;
|
|
|
|
switch (avctx->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO: {
|
|
uint8_t *data[4];
|
|
int linesize[4];
|
|
int size[4] = { 0 };
|
|
int w = frame->width;
|
|
int h = frame->height;
|
|
int tmpsize, unaligned;
|
|
|
|
if (pool->format == frame->format &&
|
|
pool->width == frame->width && pool->height == frame->height)
|
|
return 0;
|
|
|
|
avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
|
|
|
|
do {
|
|
// NOTE: do not align linesizes individually, this breaks e.g. assumptions
|
|
// that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
|
|
av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
|
|
// increase alignment of w for next try (rhs gives the lowest bit set in w)
|
|
w += w & ~(w - 1);
|
|
|
|
unaligned = 0;
|
|
for (i = 0; i < 4; i++)
|
|
unaligned |= linesize[i] % pool->stride_align[i];
|
|
} while (unaligned);
|
|
|
|
tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
|
|
NULL, linesize);
|
|
if (tmpsize < 0)
|
|
return -1;
|
|
|
|
for (i = 0; i < 3 && data[i + 1]; i++)
|
|
size[i] = data[i + 1] - data[i];
|
|
size[i] = tmpsize - (data[i] - data[0]);
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
av_buffer_pool_uninit(&pool->pools[i]);
|
|
pool->linesize[i] = linesize[i];
|
|
if (size[i]) {
|
|
pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL);
|
|
if (!pool->pools[i]) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
}
|
|
}
|
|
pool->format = frame->format;
|
|
pool->width = frame->width;
|
|
pool->height = frame->height;
|
|
|
|
break;
|
|
}
|
|
case AVMEDIA_TYPE_AUDIO: {
|
|
int ch = av_get_channel_layout_nb_channels(frame->channel_layout);
|
|
int planar = av_sample_fmt_is_planar(frame->format);
|
|
int planes = planar ? ch : 1;
|
|
|
|
if (pool->format == frame->format && pool->planes == planes &&
|
|
pool->channels == ch && frame->nb_samples == pool->samples)
|
|
return 0;
|
|
|
|
av_buffer_pool_uninit(&pool->pools[0]);
|
|
ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
|
|
frame->nb_samples, frame->format, 0);
|
|
if (ret < 0)
|
|
goto fail;
|
|
|
|
pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
|
|
if (!pool->pools[0]) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
|
|
pool->format = frame->format;
|
|
pool->planes = planes;
|
|
pool->channels = ch;
|
|
pool->samples = frame->nb_samples;
|
|
break;
|
|
}
|
|
default: av_assert0(0);
|
|
}
|
|
return 0;
|
|
fail:
|
|
for (i = 0; i < 4; i++)
|
|
av_buffer_pool_uninit(&pool->pools[i]);
|
|
pool->format = -1;
|
|
pool->planes = pool->channels = pool->samples = 0;
|
|
pool->width = pool->height = 0;
|
|
return ret;
|
|
}
|
|
|
|
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
FramePool *pool = avctx->internal->pool;
|
|
int planes = pool->planes;
|
|
int i;
|
|
|
|
frame->linesize[0] = pool->linesize[0];
|
|
|
|
if (planes > AV_NUM_DATA_POINTERS) {
|
|
frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
|
|
frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
|
|
frame->extended_buf = av_mallocz(frame->nb_extended_buf *
|
|
sizeof(*frame->extended_buf));
|
|
if (!frame->extended_data || !frame->extended_buf) {
|
|
av_freep(&frame->extended_data);
|
|
av_freep(&frame->extended_buf);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
} else
|
|
frame->extended_data = frame->data;
|
|
|
|
for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
|
|
frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
|
|
if (!frame->buf[i])
|
|
goto fail;
|
|
frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
|
|
}
|
|
for (i = 0; i < frame->nb_extended_buf; i++) {
|
|
frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
|
|
if (!frame->extended_buf[i])
|
|
goto fail;
|
|
frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
|
|
}
|
|
|
|
if (avctx->debug & FF_DEBUG_BUFFERS)
|
|
av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
|
|
|
|
return 0;
|
|
fail:
|
|
av_frame_unref(frame);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
|
|
{
|
|
FramePool *pool = s->internal->pool;
|
|
int i;
|
|
|
|
if (pic->data[0]) {
|
|
av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
|
|
return -1;
|
|
}
|
|
|
|
memset(pic->data, 0, sizeof(pic->data));
|
|
pic->extended_data = pic->data;
|
|
|
|
for (i = 0; i < 4 && pool->pools[i]; i++) {
|
|
pic->linesize[i] = pool->linesize[i];
|
|
|
|
pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
|
|
if (!pic->buf[i])
|
|
goto fail;
|
|
|
|
pic->data[i] = pic->buf[i]->data;
|
|
}
|
|
for (; i < AV_NUM_DATA_POINTERS; i++) {
|
|
pic->data[i] = NULL;
|
|
pic->linesize[i] = 0;
|
|
}
|
|
if (pic->data[1] && !pic->data[2])
|
|
avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
|
|
|
|
if (s->debug & FF_DEBUG_BUFFERS)
|
|
av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
|
|
|
|
return 0;
|
|
fail:
|
|
av_frame_unref(pic);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
|
|
{
|
|
int ret;
|
|
|
|
if (avctx->hw_frames_ctx) {
|
|
ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
|
|
frame->width = avctx->coded_width;
|
|
frame->height = avctx->coded_height;
|
|
return ret;
|
|
}
|
|
|
|
if ((ret = update_frame_pool(avctx, frame)) < 0)
|
|
return ret;
|
|
|
|
switch (avctx->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
return video_get_buffer(avctx, frame);
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
return audio_get_buffer(avctx, frame);
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
AVPacket *pkt = avctx->internal->last_pkt_props;
|
|
int i;
|
|
struct {
|
|
enum AVPacketSideDataType packet;
|
|
enum AVFrameSideDataType frame;
|
|
} sd[] = {
|
|
{ AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN },
|
|
{ AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX },
|
|
{ AV_PKT_DATA_SPHERICAL, AV_FRAME_DATA_SPHERICAL },
|
|
{ AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
|
|
{ AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
|
|
};
|
|
|
|
frame->color_primaries = avctx->color_primaries;
|
|
frame->color_trc = avctx->color_trc;
|
|
frame->colorspace = avctx->colorspace;
|
|
frame->color_range = avctx->color_range;
|
|
frame->chroma_location = avctx->chroma_sample_location;
|
|
|
|
frame->reordered_opaque = avctx->reordered_opaque;
|
|
|
|
#if FF_API_PKT_PTS
|
|
FF_DISABLE_DEPRECATION_WARNINGS
|
|
frame->pkt_pts = pkt->pts;
|
|
FF_ENABLE_DEPRECATION_WARNINGS
|
|
#endif
|
|
frame->pts = pkt->pts;
|
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
|
|
int size;
|
|
uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
|
|
if (packet_sd) {
|
|
AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
|
|
sd[i].frame,
|
|
size);
|
|
if (!frame_sd)
|
|
return AVERROR(ENOMEM);
|
|
|
|
memcpy(frame_sd->data, packet_sd, size);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void decode_data_free(void *opaque, uint8_t *data)
|
|
{
|
|
FrameDecodeData *fdd = (FrameDecodeData*)data;
|
|
|
|
av_buffer_unref(&fdd->user_opaque_ref);
|
|
|
|
if (fdd->post_process_opaque_free)
|
|
fdd->post_process_opaque_free(fdd->post_process_opaque);
|
|
|
|
if (fdd->hwaccel_priv_free)
|
|
fdd->hwaccel_priv_free(fdd->hwaccel_priv);
|
|
|
|
av_freep(&fdd);
|
|
}
|
|
|
|
static int attach_decode_data(AVFrame *frame)
|
|
{
|
|
AVBufferRef *fdd_buf;
|
|
FrameDecodeData *fdd;
|
|
|
|
fdd = av_mallocz(sizeof(*fdd));
|
|
if (!fdd)
|
|
return AVERROR(ENOMEM);
|
|
|
|
fdd_buf = av_buffer_create((uint8_t*)fdd, sizeof(*fdd), decode_data_free,
|
|
NULL, AV_BUFFER_FLAG_READONLY);
|
|
if (!fdd_buf) {
|
|
av_freep(&fdd);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
fdd->user_opaque_ref = frame->opaque_ref;
|
|
frame->opaque_ref = fdd_buf;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
|
|
{
|
|
const AVHWAccel *hwaccel = avctx->hwaccel;
|
|
int override_dimensions = 1;
|
|
int ret;
|
|
|
|
switch (avctx->codec_type) {
|
|
case AVMEDIA_TYPE_VIDEO:
|
|
if (frame->width <= 0 || frame->height <= 0) {
|
|
frame->width = FFMAX(avctx->width, avctx->coded_width);
|
|
frame->height = FFMAX(avctx->height, avctx->coded_height);
|
|
override_dimensions = 0;
|
|
}
|
|
if (frame->format < 0)
|
|
frame->format = avctx->pix_fmt;
|
|
if (!frame->sample_aspect_ratio.num)
|
|
frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
|
|
|
|
if (av_image_check_sar(frame->width, frame->height,
|
|
frame->sample_aspect_ratio) < 0) {
|
|
av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
|
|
frame->sample_aspect_ratio.num,
|
|
frame->sample_aspect_ratio.den);
|
|
frame->sample_aspect_ratio = (AVRational){ 0, 1 };
|
|
}
|
|
|
|
if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
|
|
return ret;
|
|
break;
|
|
case AVMEDIA_TYPE_AUDIO:
|
|
if (!frame->sample_rate)
|
|
frame->sample_rate = avctx->sample_rate;
|
|
if (frame->format < 0)
|
|
frame->format = avctx->sample_fmt;
|
|
if (!frame->channel_layout) {
|
|
if (avctx->channel_layout) {
|
|
if (av_get_channel_layout_nb_channels(avctx->channel_layout) !=
|
|
avctx->channels) {
|
|
av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
|
|
"configuration.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
frame->channel_layout = avctx->channel_layout;
|
|
} else {
|
|
if (avctx->channels > FF_SANE_NB_CHANNELS) {
|
|
av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
|
|
avctx->channels);
|
|
return AVERROR(ENOSYS);
|
|
}
|
|
|
|
frame->channel_layout = av_get_default_channel_layout(avctx->channels);
|
|
if (!frame->channel_layout)
|
|
frame->channel_layout = (1ULL << avctx->channels) - 1;
|
|
}
|
|
}
|
|
break;
|
|
default: return AVERROR(EINVAL);
|
|
}
|
|
|
|
ret = ff_decode_frame_props(avctx, frame);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (hwaccel) {
|
|
if (hwaccel->alloc_frame) {
|
|
ret = hwaccel->alloc_frame(avctx, frame);
|
|
goto end;
|
|
}
|
|
} else
|
|
avctx->sw_pix_fmt = avctx->pix_fmt;
|
|
|
|
ret = avctx->get_buffer2(avctx, frame, flags);
|
|
if (ret < 0)
|
|
goto end;
|
|
|
|
ret = attach_decode_data(frame);
|
|
if (ret < 0)
|
|
goto end;
|
|
|
|
end:
|
|
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions &&
|
|
!(avctx->codec->caps_internal & FF_CODEC_CAP_EXPORTS_CROPPING)) {
|
|
frame->width = avctx->width;
|
|
frame->height = avctx->height;
|
|
}
|
|
|
|
if (ret < 0)
|
|
av_frame_unref(frame);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
|
|
{
|
|
AVFrame *tmp;
|
|
int ret;
|
|
|
|
av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
|
|
|
|
if (!frame->data[0])
|
|
return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
|
|
|
|
if (av_frame_is_writable(frame))
|
|
return ff_decode_frame_props(avctx, frame);
|
|
|
|
tmp = av_frame_alloc();
|
|
if (!tmp)
|
|
return AVERROR(ENOMEM);
|
|
|
|
av_frame_move_ref(tmp, frame);
|
|
|
|
ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
|
|
if (ret < 0) {
|
|
av_frame_free(&tmp);
|
|
return ret;
|
|
}
|
|
|
|
av_frame_copy(frame, tmp);
|
|
av_frame_free(&tmp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void avcodec_flush_buffers(AVCodecContext *avctx)
|
|
{
|
|
avctx->internal->draining = 0;
|
|
avctx->internal->draining_done = 0;
|
|
av_frame_unref(avctx->internal->buffer_frame);
|
|
av_frame_unref(avctx->internal->compat_decode_frame);
|
|
av_packet_unref(avctx->internal->buffer_pkt);
|
|
avctx->internal->buffer_pkt_valid = 0;
|
|
|
|
av_packet_unref(avctx->internal->ds.in_pkt);
|
|
|
|
if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
|
|
ff_thread_flush(avctx);
|
|
else if (avctx->codec->flush)
|
|
avctx->codec->flush(avctx);
|
|
|
|
ff_decode_bsfs_uninit(avctx);
|
|
|
|
if (!avctx->refcounted_frames)
|
|
av_frame_unref(avctx->internal->to_free);
|
|
}
|
|
|
|
void ff_decode_bsfs_uninit(AVCodecContext *avctx)
|
|
{
|
|
DecodeFilterContext *s = &avctx->internal->filter;
|
|
int i;
|
|
|
|
for (i = 0; i < s->nb_bsfs; i++)
|
|
av_bsf_free(&s->bsfs[i]);
|
|
av_freep(&s->bsfs);
|
|
s->nb_bsfs = 0;
|
|
}
|