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1699 lines
57 KiB
1699 lines
57 KiB
/* |
|
* generic decoding-related code |
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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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#include <stdint.h> |
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#include <string.h> |
|
|
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#include "config.h" |
|
|
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#if CONFIG_ICONV |
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# include <iconv.h> |
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#endif |
|
|
|
#include "libavutil/avassert.h" |
|
#include "libavutil/avstring.h" |
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#include "libavutil/bprint.h" |
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#include "libavutil/channel_layout.h" |
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#include "libavutil/common.h" |
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#include "libavutil/fifo.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/internal.h" |
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#include "libavutil/intmath.h" |
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#include "libavutil/opt.h" |
|
|
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#include "avcodec.h" |
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#include "bytestream.h" |
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#include "bsf.h" |
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#include "codec_internal.h" |
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#include "decode.h" |
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#include "hwconfig.h" |
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#include "internal.h" |
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#include "thread.h" |
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|
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static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt) |
|
{ |
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int ret; |
|
size_t size; |
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const uint8_t *data; |
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uint32_t flags; |
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int64_t val; |
|
|
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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 " |
|
"changes, but PARAM_CHANGE side data was sent to it.\n"); |
|
ret = AVERROR(EINVAL); |
|
goto fail2; |
|
} |
|
|
|
if (size < 4) |
|
goto fail; |
|
|
|
flags = bytestream_get_le32(&data); |
|
size -= 4; |
|
|
|
#if FF_API_OLD_CHANNEL_LAYOUT |
|
FF_DISABLE_DEPRECATION_WARNINGS |
|
if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) { |
|
if (size < 4) |
|
goto fail; |
|
val = bytestream_get_le32(&data); |
|
if (val <= 0 || val > INT_MAX) { |
|
av_log(avctx, AV_LOG_ERROR, "Invalid channel count"); |
|
ret = AVERROR_INVALIDDATA; |
|
goto fail2; |
|
} |
|
avctx->channels = val; |
|
size -= 4; |
|
} |
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if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) { |
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if (size < 8) |
|
goto fail; |
|
avctx->channel_layout = bytestream_get_le64(&data); |
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size -= 8; |
|
} |
|
FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
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if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) { |
|
if (size < 4) |
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goto fail; |
|
val = bytestream_get_le32(&data); |
|
if (val <= 0 || val > INT_MAX) { |
|
av_log(avctx, AV_LOG_ERROR, "Invalid sample rate"); |
|
ret = AVERROR_INVALIDDATA; |
|
goto fail2; |
|
} |
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avctx->sample_rate = val; |
|
size -= 4; |
|
} |
|
if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) { |
|
if (size < 8) |
|
goto fail; |
|
avctx->width = bytestream_get_le32(&data); |
|
avctx->height = bytestream_get_le32(&data); |
|
size -= 8; |
|
ret = ff_set_dimensions(avctx, avctx->width, avctx->height); |
|
if (ret < 0) |
|
goto fail2; |
|
} |
|
|
|
return 0; |
|
fail: |
|
av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n"); |
|
ret = AVERROR_INVALIDDATA; |
|
fail2: |
|
if (ret < 0) { |
|
av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n"); |
|
if (avctx->err_recognition & AV_EF_EXPLODE) |
|
return ret; |
|
} |
|
return 0; |
|
} |
|
|
|
static int extract_packet_props(AVCodecInternal *avci, const AVPacket *pkt) |
|
{ |
|
int ret = 0; |
|
|
|
av_packet_unref(avci->last_pkt_props); |
|
if (pkt) { |
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ret = av_packet_copy_props(avci->last_pkt_props, pkt); |
|
if (!ret) |
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avci->last_pkt_props->opaque = (void *)(intptr_t)pkt->size; // Needed for ff_decode_frame_props(). |
|
} |
|
return ret; |
|
} |
|
|
|
static int decode_bsfs_init(AVCodecContext *avctx) |
|
{ |
|
AVCodecInternal *avci = avctx->internal; |
|
const FFCodec *const codec = ffcodec(avctx->codec); |
|
int ret; |
|
|
|
if (avci->bsf) |
|
return 0; |
|
|
|
ret = av_bsf_list_parse_str(codec->bsfs, &avci->bsf); |
|
if (ret < 0) { |
|
av_log(avctx, AV_LOG_ERROR, "Error parsing decoder bitstream filters '%s': %s\n", codec->bsfs, av_err2str(ret)); |
|
if (ret != AVERROR(ENOMEM)) |
|
ret = AVERROR_BUG; |
|
goto fail; |
|
} |
|
|
|
/* We do not currently have an API for passing the input timebase into decoders, |
|
* 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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avci->bsf->time_base_in = (AVRational){ 1, 90000 }; |
|
ret = avcodec_parameters_from_context(avci->bsf->par_in, avctx); |
|
if (ret < 0) |
|
goto fail; |
|
|
|
ret = av_bsf_init(avci->bsf); |
|
if (ret < 0) |
|
goto fail; |
|
|
|
return 0; |
|
fail: |
|
av_bsf_free(&avci->bsf); |
|
return ret; |
|
} |
|
|
|
int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt) |
|
{ |
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AVCodecInternal *avci = avctx->internal; |
|
int ret; |
|
|
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if (avci->draining) |
|
return AVERROR_EOF; |
|
|
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ret = av_bsf_receive_packet(avci->bsf, pkt); |
|
if (ret == AVERROR_EOF) |
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avci->draining = 1; |
|
if (ret < 0) |
|
return ret; |
|
|
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if (!(ffcodec(avctx->codec)->caps_internal & FF_CODEC_CAP_SETS_FRAME_PROPS)) { |
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ret = extract_packet_props(avctx->internal, pkt); |
|
if (ret < 0) |
|
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; |
|
|
|
return 0; |
|
finish: |
|
av_packet_unref(pkt); |
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return ret; |
|
} |
|
|
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/** |
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* Attempt to guess proper monotonic timestamps for decoded video frames |
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* which might have incorrect times. Input timestamps may wrap around, in |
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* which case the output will as well. |
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* |
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* @param pts the pts field of the decoded AVPacket, as passed through |
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* AVFrame.pts |
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* @param dts the dts field of the decoded AVPacket |
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* @return one of the input values, may be AV_NOPTS_VALUE |
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*/ |
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static int64_t guess_correct_pts(AVCodecContext *ctx, |
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int64_t reordered_pts, int64_t dts) |
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{ |
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int64_t pts = AV_NOPTS_VALUE; |
|
|
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if (dts != AV_NOPTS_VALUE) { |
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ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts; |
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ctx->pts_correction_last_dts = dts; |
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} else if (reordered_pts != AV_NOPTS_VALUE) |
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ctx->pts_correction_last_dts = reordered_pts; |
|
|
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if (reordered_pts != AV_NOPTS_VALUE) { |
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ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts; |
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ctx->pts_correction_last_pts = reordered_pts; |
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} else if(dts != AV_NOPTS_VALUE) |
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ctx->pts_correction_last_pts = dts; |
|
|
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if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE) |
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&& reordered_pts != AV_NOPTS_VALUE) |
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pts = reordered_pts; |
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else |
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pts = dts; |
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|
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return pts; |
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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 inline int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame, int64_t *discarded_samples) |
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{ |
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AVCodecInternal *avci = avctx->internal; |
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AVPacket *const pkt = avci->in_pkt; |
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const FFCodec *const codec = ffcodec(avctx->codec); |
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int got_frame, actual_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; |
|
|
|
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 = codec->cb.decode(avctx, frame, &got_frame, pkt); |
|
|
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if (!(codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS)) |
|
frame->pkt_dts = pkt->dts; |
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if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) { |
|
if(!avctx->has_b_frames) |
|
frame->pkt_pos = pkt->pos; |
|
//FIXME these should be under if(!avctx->has_b_frames) |
|
/* get_buffer is supposed to set frame parameters */ |
|
if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) { |
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if (!frame->sample_aspect_ratio.num) frame->sample_aspect_ratio = avctx->sample_aspect_ratio; |
|
if (!frame->width) frame->width = avctx->width; |
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if (!frame->height) frame->height = avctx->height; |
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if (frame->format == AV_PIX_FMT_NONE) frame->format = avctx->pix_fmt; |
|
} |
|
} |
|
} |
|
emms_c(); |
|
actual_got_frame = got_frame; |
|
|
|
if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) { |
|
if (frame->flags & AV_FRAME_FLAG_DISCARD) |
|
got_frame = 0; |
|
} else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) { |
|
uint8_t *side; |
|
size_t side_size; |
|
uint32_t discard_padding = 0; |
|
uint8_t skip_reason = 0; |
|
uint8_t discard_reason = 0; |
|
|
|
if (ret >= 0 && got_frame) { |
|
if (frame->format == AV_SAMPLE_FMT_NONE) |
|
frame->format = avctx->sample_fmt; |
|
if (!frame->ch_layout.nb_channels) { |
|
int ret2 = av_channel_layout_copy(&frame->ch_layout, &avctx->ch_layout); |
|
if (ret2 < 0) { |
|
ret = ret2; |
|
got_frame = 0; |
|
} |
|
} |
|
#if FF_API_OLD_CHANNEL_LAYOUT |
|
FF_DISABLE_DEPRECATION_WARNINGS |
|
if (!frame->channel_layout) |
|
frame->channel_layout = avctx->ch_layout.order == AV_CHANNEL_ORDER_NATIVE ? |
|
avctx->ch_layout.u.mask : 0; |
|
if (!frame->channels) |
|
frame->channels = avctx->ch_layout.nb_channels; |
|
FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
|
if (!frame->sample_rate) |
|
frame->sample_rate = avctx->sample_rate; |
|
} |
|
|
|
side= av_packet_get_side_data(avci->last_pkt_props, AV_PKT_DATA_SKIP_SAMPLES, &side_size); |
|
if(side && side_size>=10) { |
|
avci->skip_samples = AV_RL32(side); |
|
avci->skip_samples = FFMAX(0, avci->skip_samples); |
|
discard_padding = AV_RL32(side + 4); |
|
av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n", |
|
avci->skip_samples, (int)discard_padding); |
|
skip_reason = AV_RL8(side + 8); |
|
discard_reason = AV_RL8(side + 9); |
|
} |
|
|
|
if ((frame->flags & AV_FRAME_FLAG_DISCARD) && got_frame && |
|
!(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) { |
|
avci->skip_samples = FFMAX(0, avci->skip_samples - frame->nb_samples); |
|
got_frame = 0; |
|
*discarded_samples += frame->nb_samples; |
|
} |
|
|
|
if (avci->skip_samples > 0 && got_frame && |
|
!(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) { |
|
if(frame->nb_samples <= avci->skip_samples){ |
|
got_frame = 0; |
|
*discarded_samples += frame->nb_samples; |
|
avci->skip_samples -= frame->nb_samples; |
|
av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n", |
|
avci->skip_samples); |
|
} else { |
|
av_samples_copy(frame->extended_data, frame->extended_data, 0, avci->skip_samples, |
|
frame->nb_samples - avci->skip_samples, avctx->ch_layout.nb_channels, frame->format); |
|
if(avctx->pkt_timebase.num && avctx->sample_rate) { |
|
int64_t diff_ts = av_rescale_q(avci->skip_samples, |
|
(AVRational){1, avctx->sample_rate}, |
|
avctx->pkt_timebase); |
|
if(frame->pts!=AV_NOPTS_VALUE) |
|
frame->pts += diff_ts; |
|
if(frame->pkt_dts!=AV_NOPTS_VALUE) |
|
frame->pkt_dts += diff_ts; |
|
if (frame->duration >= diff_ts) |
|
frame->duration -= diff_ts; |
|
} else { |
|
av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n"); |
|
} |
|
av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n", |
|
avci->skip_samples, frame->nb_samples); |
|
*discarded_samples += avci->skip_samples; |
|
frame->nb_samples -= avci->skip_samples; |
|
avci->skip_samples = 0; |
|
} |
|
} |
|
|
|
if (discard_padding > 0 && discard_padding <= frame->nb_samples && got_frame && |
|
!(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) { |
|
if (discard_padding == frame->nb_samples) { |
|
*discarded_samples += frame->nb_samples; |
|
got_frame = 0; |
|
} else { |
|
if(avctx->pkt_timebase.num && avctx->sample_rate) { |
|
int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding, |
|
(AVRational){1, avctx->sample_rate}, |
|
avctx->pkt_timebase); |
|
frame->duration = diff_ts; |
|
} else { |
|
av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n"); |
|
} |
|
av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n", |
|
(int)discard_padding, frame->nb_samples); |
|
frame->nb_samples -= discard_padding; |
|
} |
|
} |
|
|
|
if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && got_frame) { |
|
AVFrameSideData *fside = av_frame_new_side_data(frame, AV_FRAME_DATA_SKIP_SAMPLES, 10); |
|
if (fside) { |
|
AV_WL32(fside->data, avci->skip_samples); |
|
AV_WL32(fside->data + 4, discard_padding); |
|
AV_WL8(fside->data + 8, skip_reason); |
|
AV_WL8(fside->data + 9, discard_reason); |
|
avci->skip_samples = 0; |
|
} |
|
} |
|
} |
|
|
|
if (avctx->codec->type == AVMEDIA_TYPE_AUDIO && |
|
!avci->showed_multi_packet_warning && |
|
ret >= 0 && ret != pkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) { |
|
av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n"); |
|
avci->showed_multi_packet_warning = 1; |
|
} |
|
|
|
if (!got_frame) |
|
av_frame_unref(frame); |
|
|
|
#if FF_API_FLAG_TRUNCATED |
|
if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED)) |
|
#else |
|
if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO) |
|
#endif |
|
ret = pkt->size; |
|
|
|
#if FF_API_AVCTX_TIMEBASE |
|
if (avctx->framerate.num > 0 && avctx->framerate.den > 0) |
|
avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1})); |
|
#endif |
|
|
|
/* do not stop draining when actual_got_frame != 0 or ret < 0 */ |
|
/* got_frame == 0 but actual_got_frame != 0 when frame is discarded */ |
|
if (avci->draining && !actual_got_frame) { |
|
if (ret < 0) { |
|
/* prevent infinite loop if a decoder wrongly always return error on draining */ |
|
/* reasonable nb_errors_max = maximum b frames + thread count */ |
|
int nb_errors_max = 20 + (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME ? |
|
avctx->thread_count : 1); |
|
|
|
if (avci->nb_draining_errors++ >= nb_errors_max) { |
|
av_log(avctx, AV_LOG_ERROR, "Too many errors when draining, this is a bug. " |
|
"Stop draining and force EOF.\n"); |
|
avci->draining_done = 1; |
|
ret = AVERROR_BUG; |
|
} |
|
} else { |
|
avci->draining_done = 1; |
|
} |
|
} |
|
|
|
if (ret >= pkt->size || ret < 0) { |
|
av_packet_unref(pkt); |
|
} else { |
|
int consumed = ret; |
|
|
|
pkt->data += consumed; |
|
pkt->size -= consumed; |
|
pkt->pts = AV_NOPTS_VALUE; |
|
pkt->dts = AV_NOPTS_VALUE; |
|
if (!(codec->caps_internal & FF_CODEC_CAP_SETS_FRAME_PROPS)) { |
|
// See extract_packet_props() comment. |
|
avci->last_pkt_props->opaque = (void *)((intptr_t)avci->last_pkt_props->opaque - consumed); |
|
avci->last_pkt_props->pts = AV_NOPTS_VALUE; |
|
avci->last_pkt_props->dts = AV_NOPTS_VALUE; |
|
} |
|
} |
|
|
|
if (got_frame) |
|
av_assert0(frame->buf[0]); |
|
|
|
return ret < 0 ? ret : 0; |
|
} |
|
|
|
#if CONFIG_LCMS2 |
|
static int detect_colorspace(AVCodecContext *avctx, AVFrame *frame) |
|
{ |
|
AVCodecInternal *avci = avctx->internal; |
|
enum AVColorTransferCharacteristic trc; |
|
AVColorPrimariesDesc coeffs; |
|
enum AVColorPrimaries prim; |
|
cmsHPROFILE profile; |
|
AVFrameSideData *sd; |
|
int ret; |
|
if (!(avctx->flags2 & AV_CODEC_FLAG2_ICC_PROFILES)) |
|
return 0; |
|
|
|
sd = av_frame_get_side_data(frame, AV_FRAME_DATA_ICC_PROFILE); |
|
if (!sd || !sd->size) |
|
return 0; |
|
|
|
if (!avci->icc.avctx) { |
|
ret = ff_icc_context_init(&avci->icc, avctx); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
profile = cmsOpenProfileFromMemTHR(avci->icc.ctx, sd->data, sd->size); |
|
if (!profile) |
|
return AVERROR_INVALIDDATA; |
|
|
|
ret = ff_icc_profile_read_primaries(&avci->icc, profile, &coeffs); |
|
if (!ret) |
|
ret = ff_icc_profile_detect_transfer(&avci->icc, profile, &trc); |
|
cmsCloseProfile(profile); |
|
if (ret < 0) |
|
return ret; |
|
|
|
prim = av_csp_primaries_id_from_desc(&coeffs); |
|
if (prim != AVCOL_PRI_UNSPECIFIED) |
|
frame->color_primaries = prim; |
|
if (trc != AVCOL_TRC_UNSPECIFIED) |
|
frame->color_trc = trc; |
|
return 0; |
|
} |
|
#else /* !CONFIG_LCMS2 */ |
|
static int detect_colorspace(av_unused AVCodecContext *c, av_unused AVFrame *f) |
|
{ |
|
return 0; |
|
} |
|
#endif |
|
|
|
static int decode_simple_receive_frame(AVCodecContext *avctx, AVFrame *frame) |
|
{ |
|
int ret; |
|
int64_t discarded_samples = 0; |
|
|
|
while (!frame->buf[0]) { |
|
if (discarded_samples > avctx->max_samples) |
|
return AVERROR(EAGAIN); |
|
ret = decode_simple_internal(avctx, frame, &discarded_samples); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame) |
|
{ |
|
AVCodecInternal *avci = avctx->internal; |
|
const FFCodec *const codec = ffcodec(avctx->codec); |
|
int ret, ok; |
|
|
|
av_assert0(!frame->buf[0]); |
|
|
|
if (codec->cb_type == FF_CODEC_CB_TYPE_RECEIVE_FRAME) { |
|
ret = codec->cb.receive_frame(avctx, frame); |
|
} else |
|
ret = decode_simple_receive_frame(avctx, frame); |
|
|
|
if (ret == AVERROR_EOF) |
|
avci->draining_done = 1; |
|
|
|
/* preserve ret */ |
|
ok = detect_colorspace(avctx, frame); |
|
if (ok < 0) { |
|
av_frame_unref(frame); |
|
return ok; |
|
} |
|
|
|
if (!ret) { |
|
frame->best_effort_timestamp = guess_correct_pts(avctx, |
|
frame->pts, |
|
frame->pkt_dts); |
|
|
|
#if FF_API_PKT_DURATION |
|
FF_DISABLE_DEPRECATION_WARNINGS |
|
frame->pkt_duration = frame->duration; |
|
FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
|
|
|
/* the only case where decode data is not set should be decoders |
|
* that do not call ff_get_buffer() */ |
|
av_assert0((frame->private_ref && frame->private_ref->size == sizeof(FrameDecodeData)) || |
|
!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)); |
|
|
|
if (frame->private_ref) { |
|
FrameDecodeData *fdd = (FrameDecodeData*)frame->private_ref->data; |
|
|
|
if (fdd->post_process) { |
|
ret = fdd->post_process(avctx, frame); |
|
if (ret < 0) { |
|
av_frame_unref(frame); |
|
return ret; |
|
} |
|
} |
|
} |
|
} |
|
|
|
/* free the per-frame decode data */ |
|
av_buffer_unref(&frame->private_ref); |
|
|
|
return ret; |
|
} |
|
|
|
int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt) |
|
{ |
|
AVCodecInternal *avci = avctx->internal; |
|
int ret; |
|
|
|
if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec)) |
|
return AVERROR(EINVAL); |
|
|
|
if (avctx->internal->draining) |
|
return AVERROR_EOF; |
|
|
|
if (avpkt && !avpkt->size && avpkt->data) |
|
return AVERROR(EINVAL); |
|
|
|
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->bsf, 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: " |
|
"%"SIZE_SPECIFIER"/%"SIZE_SPECIFIER"/%"SIZE_SPECIFIER"/%"SIZE_SPECIFIER" " |
|
"(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); |
|
} |
|
|
|
// make sure frames returned to the caller are valid |
|
static int frame_validate(AVCodecContext *avctx, AVFrame *frame) |
|
{ |
|
if (!frame->buf[0] || frame->format < 0) |
|
goto fail; |
|
|
|
switch (avctx->codec_type) { |
|
case AVMEDIA_TYPE_VIDEO: |
|
if (frame->width <= 0 || frame->height <= 0) |
|
goto fail; |
|
break; |
|
case AVMEDIA_TYPE_AUDIO: |
|
if (!av_channel_layout_check(&frame->ch_layout) || |
|
frame->sample_rate <= 0) |
|
goto fail; |
|
|
|
break; |
|
default: av_assert0(0); |
|
} |
|
|
|
return 0; |
|
fail: |
|
av_log(avctx, AV_LOG_ERROR, "An invalid frame was output by a decoder. " |
|
"This is a bug, please report it.\n"); |
|
return AVERROR_BUG; |
|
} |
|
|
|
int ff_decode_receive_frame(AVCodecContext *avctx, AVFrame *frame) |
|
{ |
|
AVCodecInternal *avci = avctx->internal; |
|
int ret, changed; |
|
|
|
if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec)) |
|
return AVERROR(EINVAL); |
|
|
|
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; |
|
} |
|
|
|
ret = frame_validate(avctx, frame); |
|
if (ret < 0) |
|
goto fail; |
|
|
|
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) { |
|
ret = apply_cropping(avctx, frame); |
|
if (ret < 0) |
|
goto fail; |
|
} |
|
|
|
avctx->frame_number++; |
|
|
|
if (avctx->flags & AV_CODEC_FLAG_DROPCHANGED) { |
|
|
|
if (avctx->frame_number == 1) { |
|
avci->initial_format = frame->format; |
|
switch(avctx->codec_type) { |
|
case AVMEDIA_TYPE_VIDEO: |
|
avci->initial_width = frame->width; |
|
avci->initial_height = frame->height; |
|
break; |
|
case AVMEDIA_TYPE_AUDIO: |
|
avci->initial_sample_rate = frame->sample_rate ? frame->sample_rate : |
|
avctx->sample_rate; |
|
ret = av_channel_layout_copy(&avci->initial_ch_layout, &frame->ch_layout); |
|
if (ret < 0) |
|
goto fail; |
|
break; |
|
} |
|
} |
|
|
|
if (avctx->frame_number > 1) { |
|
changed = avci->initial_format != frame->format; |
|
|
|
switch(avctx->codec_type) { |
|
case AVMEDIA_TYPE_VIDEO: |
|
changed |= avci->initial_width != frame->width || |
|
avci->initial_height != frame->height; |
|
break; |
|
case AVMEDIA_TYPE_AUDIO: |
|
changed |= avci->initial_sample_rate != frame->sample_rate || |
|
avci->initial_sample_rate != avctx->sample_rate || |
|
av_channel_layout_compare(&avci->initial_ch_layout, &frame->ch_layout); |
|
break; |
|
} |
|
|
|
if (changed) { |
|
avci->changed_frames_dropped++; |
|
av_log(avctx, AV_LOG_INFO, "dropped changed frame #%d pts %"PRId64 |
|
" drop count: %d \n", |
|
avctx->frame_number, frame->pts, |
|
avci->changed_frames_dropped); |
|
ret = AVERROR_INPUT_CHANGED; |
|
goto fail; |
|
} |
|
} |
|
} |
|
return 0; |
|
fail: |
|
av_frame_unref(frame); |
|
return ret; |
|
} |
|
|
|
static void get_subtitle_defaults(AVSubtitle *sub) |
|
{ |
|
memset(sub, 0, sizeof(*sub)); |
|
sub->pts = AV_NOPTS_VALUE; |
|
} |
|
|
|
#define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */ |
|
static int recode_subtitle(AVCodecContext *avctx, const AVPacket **outpkt, |
|
const AVPacket *inpkt, AVPacket *buf_pkt) |
|
{ |
|
#if CONFIG_ICONV |
|
iconv_t cd = (iconv_t)-1; |
|
int ret = 0; |
|
char *inb, *outb; |
|
size_t inl, outl; |
|
#endif |
|
|
|
if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0) { |
|
*outpkt = inpkt; |
|
return 0; |
|
} |
|
|
|
#if CONFIG_ICONV |
|
inb = inpkt->data; |
|
inl = inpkt->size; |
|
|
|
if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) { |
|
av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n"); |
|
return AVERROR(ERANGE); |
|
} |
|
|
|
cd = iconv_open("UTF-8", avctx->sub_charenc); |
|
av_assert0(cd != (iconv_t)-1); |
|
|
|
ret = av_new_packet(buf_pkt, inl * UTF8_MAX_BYTES); |
|
if (ret < 0) |
|
goto end; |
|
ret = av_packet_copy_props(buf_pkt, inpkt); |
|
if (ret < 0) |
|
goto end; |
|
outb = buf_pkt->data; |
|
outl = buf_pkt->size; |
|
|
|
if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 || |
|
iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 || |
|
outl >= buf_pkt->size || inl != 0) { |
|
ret = FFMIN(AVERROR(errno), -1); |
|
av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" " |
|
"from %s to UTF-8\n", inpkt->data, avctx->sub_charenc); |
|
goto end; |
|
} |
|
buf_pkt->size -= outl; |
|
memset(buf_pkt->data + buf_pkt->size, 0, outl); |
|
*outpkt = buf_pkt; |
|
|
|
ret = 0; |
|
end: |
|
if (ret < 0) |
|
av_packet_unref(buf_pkt); |
|
if (cd != (iconv_t)-1) |
|
iconv_close(cd); |
|
return ret; |
|
#else |
|
av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv"); |
|
return AVERROR(EINVAL); |
|
#endif |
|
} |
|
|
|
static int utf8_check(const uint8_t *str) |
|
{ |
|
const uint8_t *byte; |
|
uint32_t codepoint, min; |
|
|
|
while (*str) { |
|
byte = str; |
|
GET_UTF8(codepoint, *(byte++), return 0;); |
|
min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 : |
|
1 << (5 * (byte - str) - 4); |
|
if (codepoint < min || codepoint >= 0x110000 || |
|
codepoint == 0xFFFE /* BOM */ || |
|
codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */) |
|
return 0; |
|
str = byte; |
|
} |
|
return 1; |
|
} |
|
|
|
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, |
|
int *got_sub_ptr, const AVPacket *avpkt) |
|
{ |
|
int ret = 0; |
|
|
|
if (!avpkt->data && avpkt->size) { |
|
av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
if (!avctx->codec) |
|
return AVERROR(EINVAL); |
|
if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) { |
|
av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n"); |
|
return AVERROR(EINVAL); |
|
} |
|
|
|
*got_sub_ptr = 0; |
|
get_subtitle_defaults(sub); |
|
|
|
if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) { |
|
AVCodecInternal *avci = avctx->internal; |
|
const AVPacket *pkt; |
|
|
|
ret = recode_subtitle(avctx, &pkt, avpkt, avci->buffer_pkt); |
|
if (ret < 0) |
|
return ret; |
|
|
|
if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE) |
|
sub->pts = av_rescale_q(avpkt->pts, |
|
avctx->pkt_timebase, AV_TIME_BASE_Q); |
|
ret = ffcodec(avctx->codec)->cb.decode_sub(avctx, sub, got_sub_ptr, pkt); |
|
if (pkt == avci->buffer_pkt) // did we recode? |
|
av_packet_unref(avci->buffer_pkt); |
|
if (ret < 0) { |
|
*got_sub_ptr = 0; |
|
avsubtitle_free(sub); |
|
return ret; |
|
} |
|
av_assert1(!sub->num_rects || *got_sub_ptr); |
|
|
|
if (sub->num_rects && !sub->end_display_time && avpkt->duration && |
|
avctx->pkt_timebase.num) { |
|
AVRational ms = { 1, 1000 }; |
|
sub->end_display_time = av_rescale_q(avpkt->duration, |
|
avctx->pkt_timebase, ms); |
|
} |
|
|
|
if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) |
|
sub->format = 0; |
|
else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB) |
|
sub->format = 1; |
|
|
|
for (unsigned i = 0; i < sub->num_rects; i++) { |
|
if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_IGNORE && |
|
sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) { |
|
av_log(avctx, AV_LOG_ERROR, |
|
"Invalid UTF-8 in decoded subtitles text; " |
|
"maybe missing -sub_charenc option\n"); |
|
avsubtitle_free(sub); |
|
*got_sub_ptr = 0; |
|
return AVERROR_INVALIDDATA; |
|
} |
|
} |
|
|
|
if (*got_sub_ptr) |
|
avctx->frame_number++; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *avctx, |
|
const enum AVPixelFormat *fmt) |
|
{ |
|
const AVPixFmtDescriptor *desc; |
|
const AVCodecHWConfig *config; |
|
int i, n; |
|
|
|
// If a device was supplied when the codec was opened, assume that the |
|
// user wants to use it. |
|
if (avctx->hw_device_ctx && ffcodec(avctx->codec)->hw_configs) { |
|
AVHWDeviceContext *device_ctx = |
|
(AVHWDeviceContext*)avctx->hw_device_ctx->data; |
|
for (i = 0;; i++) { |
|
config = &ffcodec(avctx->codec)->hw_configs[i]->public; |
|
if (!config) |
|
break; |
|
if (!(config->methods & |
|
AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX)) |
|
continue; |
|
if (device_ctx->type != config->device_type) |
|
continue; |
|
for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) { |
|
if (config->pix_fmt == fmt[n]) |
|
return fmt[n]; |
|
} |
|
} |
|
} |
|
// No device or other setup, so we have to choose from things which |
|
// don't any other external information. |
|
|
|
// If the last element of the list is a software format, choose it |
|
// (this should be best software format if any exist). |
|
for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++); |
|
desc = av_pix_fmt_desc_get(fmt[n - 1]); |
|
if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) |
|
return fmt[n - 1]; |
|
|
|
// Finally, traverse the list in order and choose the first entry |
|
// with no external dependencies (if there is no hardware configuration |
|
// information available then this just picks the first entry). |
|
for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) { |
|
for (i = 0;; i++) { |
|
config = avcodec_get_hw_config(avctx->codec, i); |
|
if (!config) |
|
break; |
|
if (config->pix_fmt == fmt[n]) |
|
break; |
|
} |
|
if (!config) { |
|
// No specific config available, so the decoder must be able |
|
// to handle this format without any additional setup. |
|
return fmt[n]; |
|
} |
|
if (config->methods & AV_CODEC_HW_CONFIG_METHOD_INTERNAL) { |
|
// Usable with only internal setup. |
|
return fmt[n]; |
|
} |
|
} |
|
|
|
// Nothing is usable, give up. |
|
return AV_PIX_FMT_NONE; |
|
} |
|
|
|
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; |
|
} |
|
|
|
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; |
|
const AVCodecHWConfigInternal *hw_config; |
|
const AVHWAccel *hwa; |
|
int i, ret; |
|
|
|
for (i = 0;; i++) { |
|
hw_config = ffcodec(avctx->codec)->hw_configs[i]; |
|
if (!hw_config) |
|
return AVERROR(ENOENT); |
|
if (hw_config->public.pix_fmt == hw_pix_fmt) |
|
break; |
|
} |
|
|
|
hwa = hw_config->hwaccel; |
|
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) { |
|
AVHWFramesContext *frames_ctx = (AVHWFramesContext*)frames_ref->data; |
|
|
|
if (frames_ctx->initial_pool_size) { |
|
// If the user has requested that extra output surfaces be |
|
// available then add them here. |
|
if (avctx->extra_hw_frames > 0) |
|
frames_ctx->initial_pool_size += avctx->extra_hw_frames; |
|
|
|
// If frame threading is enabled then an extra surface per thread |
|
// is also required. |
|
if (avctx->active_thread_type & FF_THREAD_FRAME) |
|
frames_ctx->initial_pool_size += avctx->thread_count; |
|
} |
|
|
|
*out_frames_ref = frames_ref; |
|
} else { |
|
av_buffer_unref(&frames_ref); |
|
} |
|
return ret; |
|
} |
|
|
|
static int hwaccel_init(AVCodecContext *avctx, |
|
const AVCodecHWConfigInternal *hw_config) |
|
{ |
|
const AVHWAccel *hwaccel; |
|
int err; |
|
|
|
hwaccel = hw_config->hwaccel; |
|
if (hwaccel->capabilities & AV_HWACCEL_CODEC_CAP_EXPERIMENTAL && |
|
avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) { |
|
av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n", |
|
hwaccel->name); |
|
return AVERROR_PATCHWELCOME; |
|
} |
|
|
|
if (hwaccel->priv_data_size) { |
|
avctx->internal->hwaccel_priv_data = |
|
av_mallocz(hwaccel->priv_data_size); |
|
if (!avctx->internal->hwaccel_priv_data) |
|
return AVERROR(ENOMEM); |
|
} |
|
|
|
avctx->hwaccel = hwaccel; |
|
if (hwaccel->init) { |
|
err = hwaccel->init(avctx); |
|
if (err < 0) { |
|
av_log(avctx, AV_LOG_ERROR, "Failed setup for format %s: " |
|
"hwaccel initialisation returned error.\n", |
|
av_get_pix_fmt_name(hw_config->public.pix_fmt)); |
|
av_freep(&avctx->internal->hwaccel_priv_data); |
|
avctx->hwaccel = NULL; |
|
return err; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void hwaccel_uninit(AVCodecContext *avctx) |
|
{ |
|
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); |
|
} |
|
|
|
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt) |
|
{ |
|
const AVPixFmtDescriptor *desc; |
|
enum AVPixelFormat *choices; |
|
enum AVPixelFormat ret, user_choice; |
|
const AVCodecHWConfigInternal *hw_config; |
|
const AVCodecHWConfig *config; |
|
int i, n, err; |
|
|
|
// Find end of list. |
|
for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++); |
|
// Must contain at least one entry. |
|
av_assert0(n >= 1); |
|
// If a software format is available, it must be the last entry. |
|
desc = av_pix_fmt_desc_get(fmt[n - 1]); |
|
if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) { |
|
// No software format is available. |
|
} else { |
|
avctx->sw_pix_fmt = fmt[n - 1]; |
|
} |
|
|
|
choices = av_memdup(fmt, (n + 1) * sizeof(*choices)); |
|
if (!choices) |
|
return AV_PIX_FMT_NONE; |
|
|
|
for (;;) { |
|
// Remove the previous hwaccel, if there was one. |
|
hwaccel_uninit(avctx); |
|
|
|
user_choice = avctx->get_format(avctx, choices); |
|
if (user_choice == AV_PIX_FMT_NONE) { |
|
// Explicitly chose nothing, give up. |
|
ret = AV_PIX_FMT_NONE; |
|
break; |
|
} |
|
|
|
desc = av_pix_fmt_desc_get(user_choice); |
|
if (!desc) { |
|
av_log(avctx, AV_LOG_ERROR, "Invalid format returned by " |
|
"get_format() callback.\n"); |
|
ret = AV_PIX_FMT_NONE; |
|
break; |
|
} |
|
av_log(avctx, AV_LOG_DEBUG, "Format %s chosen by get_format().\n", |
|
desc->name); |
|
|
|
for (i = 0; i < n; i++) { |
|
if (choices[i] == user_choice) |
|
break; |
|
} |
|
if (i == n) { |
|
av_log(avctx, AV_LOG_ERROR, "Invalid return from get_format(): " |
|
"%s not in possible list.\n", desc->name); |
|
ret = AV_PIX_FMT_NONE; |
|
break; |
|
} |
|
|
|
if (ffcodec(avctx->codec)->hw_configs) { |
|
for (i = 0;; i++) { |
|
hw_config = ffcodec(avctx->codec)->hw_configs[i]; |
|
if (!hw_config) |
|
break; |
|
if (hw_config->public.pix_fmt == user_choice) |
|
break; |
|
} |
|
} else { |
|
hw_config = NULL; |
|
} |
|
|
|
if (!hw_config) { |
|
// No config available, so no extra setup required. |
|
ret = user_choice; |
|
break; |
|
} |
|
config = &hw_config->public; |
|
|
|
if (config->methods & |
|
AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX && |
|
avctx->hw_frames_ctx) { |
|
const AVHWFramesContext *frames_ctx = |
|
(AVHWFramesContext*)avctx->hw_frames_ctx->data; |
|
if (frames_ctx->format != user_choice) { |
|
av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: " |
|
"does not match the format of the provided frames " |
|
"context.\n", desc->name); |
|
goto try_again; |
|
} |
|
} else if (config->methods & |
|
AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX && |
|
avctx->hw_device_ctx) { |
|
const AVHWDeviceContext *device_ctx = |
|
(AVHWDeviceContext*)avctx->hw_device_ctx->data; |
|
if (device_ctx->type != config->device_type) { |
|
av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: " |
|
"does not match the type of the provided device " |
|
"context.\n", desc->name); |
|
goto try_again; |
|
} |
|
} else if (config->methods & |
|
AV_CODEC_HW_CONFIG_METHOD_INTERNAL) { |
|
// Internal-only setup, no additional configuration. |
|
} else if (config->methods & |
|
AV_CODEC_HW_CONFIG_METHOD_AD_HOC) { |
|
// Some ad-hoc configuration we can't see and can't check. |
|
} else { |
|
av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: " |
|
"missing configuration.\n", desc->name); |
|
goto try_again; |
|
} |
|
if (hw_config->hwaccel) { |
|
av_log(avctx, AV_LOG_DEBUG, "Format %s requires hwaccel " |
|
"initialisation.\n", desc->name); |
|
err = hwaccel_init(avctx, hw_config); |
|
if (err < 0) |
|
goto try_again; |
|
} |
|
ret = user_choice; |
|
break; |
|
|
|
try_again: |
|
av_log(avctx, AV_LOG_DEBUG, "Format %s not usable, retrying " |
|
"get_format() without it.\n", desc->name); |
|
for (i = 0; i < n; i++) { |
|
if (choices[i] == user_choice) |
|
break; |
|
} |
|
for (; i + 1 < n; i++) |
|
choices[i] = choices[i + 1]; |
|
--n; |
|
} |
|
|
|
av_freep(&choices); |
|
return ret; |
|
} |
|
|
|
static int add_metadata_from_side_data(const AVPacket *avpkt, AVFrame *frame) |
|
{ |
|
size_t size; |
|
const uint8_t *side_metadata; |
|
|
|
AVDictionary **frame_md = &frame->metadata; |
|
|
|
side_metadata = av_packet_get_side_data(avpkt, |
|
AV_PKT_DATA_STRINGS_METADATA, &size); |
|
return av_packet_unpack_dictionary(side_metadata, size, frame_md); |
|
} |
|
|
|
int ff_decode_frame_props_from_pkt(const AVCodecContext *avctx, |
|
AVFrame *frame, const AVPacket *pkt) |
|
{ |
|
static const 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 }, |
|
{ AV_PKT_DATA_MASTERING_DISPLAY_METADATA, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA }, |
|
{ AV_PKT_DATA_CONTENT_LIGHT_LEVEL, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL }, |
|
{ AV_PKT_DATA_A53_CC, AV_FRAME_DATA_A53_CC }, |
|
{ AV_PKT_DATA_ICC_PROFILE, AV_FRAME_DATA_ICC_PROFILE }, |
|
{ AV_PKT_DATA_S12M_TIMECODE, AV_FRAME_DATA_S12M_TIMECODE }, |
|
{ AV_PKT_DATA_DYNAMIC_HDR10_PLUS, AV_FRAME_DATA_DYNAMIC_HDR_PLUS }, |
|
}; |
|
|
|
frame->pts = pkt->pts; |
|
frame->pkt_pos = pkt->pos; |
|
frame->duration = pkt->duration; |
|
frame->pkt_size = pkt->size; |
|
|
|
for (int i = 0; i < FF_ARRAY_ELEMS(sd); i++) { |
|
size_t 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); |
|
} |
|
} |
|
add_metadata_from_side_data(pkt, frame); |
|
|
|
if (pkt->flags & AV_PKT_FLAG_DISCARD) { |
|
frame->flags |= AV_FRAME_FLAG_DISCARD; |
|
} else { |
|
frame->flags = (frame->flags & ~AV_FRAME_FLAG_DISCARD); |
|
} |
|
|
|
if (avctx->flags & AV_CODEC_FLAG_COPY_OPAQUE) { |
|
int ret = av_buffer_replace(&frame->opaque_ref, pkt->opaque_ref); |
|
if (ret < 0) |
|
return ret; |
|
frame->opaque = pkt->opaque; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame) |
|
{ |
|
const AVPacket *pkt = avctx->internal->last_pkt_props; |
|
|
|
if (!(ffcodec(avctx->codec)->caps_internal & FF_CODEC_CAP_SETS_FRAME_PROPS)) { |
|
int ret = ff_decode_frame_props_from_pkt(avctx, frame, pkt); |
|
if (ret < 0) |
|
return ret; |
|
frame->pkt_size = (int)(intptr_t)pkt->opaque; |
|
} |
|
#if FF_API_REORDERED_OPAQUE |
|
FF_DISABLE_DEPRECATION_WARNINGS |
|
frame->reordered_opaque = avctx->reordered_opaque; |
|
FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
|
|
|
if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED) |
|
frame->color_primaries = avctx->color_primaries; |
|
if (frame->color_trc == AVCOL_TRC_UNSPECIFIED) |
|
frame->color_trc = avctx->color_trc; |
|
if (frame->colorspace == AVCOL_SPC_UNSPECIFIED) |
|
frame->colorspace = avctx->colorspace; |
|
if (frame->color_range == AVCOL_RANGE_UNSPECIFIED) |
|
frame->color_range = avctx->color_range; |
|
if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED) |
|
frame->chroma_location = avctx->chroma_sample_location; |
|
|
|
switch (avctx->codec->type) { |
|
case AVMEDIA_TYPE_VIDEO: |
|
frame->format = avctx->pix_fmt; |
|
if (!frame->sample_aspect_ratio.num) |
|
frame->sample_aspect_ratio = avctx->sample_aspect_ratio; |
|
|
|
if (frame->width && frame->height && |
|
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 }; |
|
} |
|
|
|
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->ch_layout.nb_channels) { |
|
int ret = av_channel_layout_copy(&frame->ch_layout, &avctx->ch_layout); |
|
if (ret < 0) |
|
return ret; |
|
} |
|
#if FF_API_OLD_CHANNEL_LAYOUT |
|
FF_DISABLE_DEPRECATION_WARNINGS |
|
frame->channels = frame->ch_layout.nb_channels; |
|
frame->channel_layout = frame->ch_layout.order == AV_CHANNEL_ORDER_NATIVE ? |
|
frame->ch_layout.u.mask : 0; |
|
FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
|
break; |
|
} |
|
return 0; |
|
} |
|
|
|
static void validate_avframe_allocation(AVCodecContext *avctx, AVFrame *frame) |
|
{ |
|
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) { |
|
int i; |
|
int num_planes = av_pix_fmt_count_planes(frame->format); |
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format); |
|
int flags = desc ? desc->flags : 0; |
|
if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL)) |
|
num_planes = 2; |
|
for (i = 0; i < num_planes; i++) { |
|
av_assert0(frame->data[i]); |
|
} |
|
// For formats without data like hwaccel allow unused pointers to be non-NULL. |
|
for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) { |
|
if (frame->data[i]) |
|
av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n"); |
|
frame->data[i] = NULL; |
|
} |
|
} |
|
} |
|
|
|
static void decode_data_free(void *opaque, uint8_t *data) |
|
{ |
|
FrameDecodeData *fdd = (FrameDecodeData*)data; |
|
|
|
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); |
|
} |
|
|
|
int ff_attach_decode_data(AVFrame *frame) |
|
{ |
|
AVBufferRef *fdd_buf; |
|
FrameDecodeData *fdd; |
|
|
|
av_assert1(!frame->private_ref); |
|
av_buffer_unref(&frame->private_ref); |
|
|
|
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); |
|
} |
|
|
|
frame->private_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; |
|
|
|
av_assert0(av_codec_is_decoder(avctx->codec)); |
|
|
|
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) { |
|
if ((unsigned)avctx->width > INT_MAX - STRIDE_ALIGN || |
|
(ret = av_image_check_size2(FFALIGN(avctx->width, STRIDE_ALIGN), avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) < 0 || avctx->pix_fmt<0) { |
|
av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n"); |
|
ret = AVERROR(EINVAL); |
|
goto fail; |
|
} |
|
|
|
if (frame->width <= 0 || frame->height <= 0) { |
|
frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres)); |
|
frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres)); |
|
override_dimensions = 0; |
|
} |
|
|
|
if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) { |
|
av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n"); |
|
ret = AVERROR(EINVAL); |
|
goto fail; |
|
} |
|
} else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) { |
|
#if FF_API_OLD_CHANNEL_LAYOUT |
|
FF_DISABLE_DEPRECATION_WARNINGS |
|
/* compat layer for old-style get_buffer() implementations */ |
|
avctx->channels = avctx->ch_layout.nb_channels; |
|
avctx->channel_layout = (avctx->ch_layout.order == AV_CHANNEL_ORDER_NATIVE) ? |
|
avctx->ch_layout.u.mask : 0; |
|
FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
|
|
|
if (frame->nb_samples * (int64_t)avctx->ch_layout.nb_channels > avctx->max_samples) { |
|
av_log(avctx, AV_LOG_ERROR, "samples per frame %d, exceeds max_samples %"PRId64"\n", frame->nb_samples, avctx->max_samples); |
|
ret = AVERROR(EINVAL); |
|
goto fail; |
|
} |
|
} |
|
ret = ff_decode_frame_props(avctx, frame); |
|
if (ret < 0) |
|
goto fail; |
|
|
|
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 fail; |
|
|
|
validate_avframe_allocation(avctx, frame); |
|
|
|
ret = ff_attach_decode_data(frame); |
|
if (ret < 0) |
|
goto fail; |
|
|
|
end: |
|
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions && |
|
!(ffcodec(avctx->codec)->caps_internal & FF_CODEC_CAP_EXPORTS_CROPPING)) { |
|
frame->width = avctx->width; |
|
frame->height = avctx->height; |
|
} |
|
|
|
fail: |
|
if (ret < 0) { |
|
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); |
|
av_frame_unref(frame); |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags) |
|
{ |
|
AVFrame *tmp; |
|
int ret; |
|
|
|
av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO); |
|
|
|
if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) { |
|
av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n", |
|
frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt)); |
|
av_frame_unref(frame); |
|
} |
|
|
|
if (!frame->data[0]) |
|
return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF); |
|
|
|
if ((flags & FF_REGET_BUFFER_FLAG_READONLY) || 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; |
|
} |
|
|
|
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags) |
|
{ |
|
int ret = reget_buffer_internal(avctx, frame, flags); |
|
if (ret < 0) |
|
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n"); |
|
return ret; |
|
} |
|
|
|
int ff_decode_preinit(AVCodecContext *avctx) |
|
{ |
|
AVCodecInternal *avci = avctx->internal; |
|
int ret = 0; |
|
|
|
/* if the decoder init function was already called previously, |
|
* free the already allocated subtitle_header before overwriting it */ |
|
av_freep(&avctx->subtitle_header); |
|
|
|
#if FF_API_THREAD_SAFE_CALLBACKS |
|
FF_DISABLE_DEPRECATION_WARNINGS |
|
if ((avctx->thread_type & FF_THREAD_FRAME) && |
|
avctx->get_buffer2 != avcodec_default_get_buffer2 && |
|
!avctx->thread_safe_callbacks) { |
|
av_log(avctx, AV_LOG_WARNING, "Requested frame threading with a " |
|
"custom get_buffer2() implementation which is not marked as " |
|
"thread safe. This is not supported anymore, make your " |
|
"callback thread-safe.\n"); |
|
} |
|
FF_ENABLE_DEPRECATION_WARNINGS |
|
#endif |
|
|
|
if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) { |
|
av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n", |
|
avctx->codec->max_lowres); |
|
avctx->lowres = avctx->codec->max_lowres; |
|
} |
|
if (avctx->sub_charenc) { |
|
if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) { |
|
av_log(avctx, AV_LOG_ERROR, "Character encoding is only " |
|
"supported with subtitles codecs\n"); |
|
return AVERROR(EINVAL); |
|
} else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) { |
|
av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, " |
|
"subtitles character encoding will be ignored\n", |
|
avctx->codec_descriptor->name); |
|
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING; |
|
} else { |
|
/* input character encoding is set for a text based subtitle |
|
* codec at this point */ |
|
if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC) |
|
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER; |
|
|
|
if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) { |
|
#if CONFIG_ICONV |
|
iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc); |
|
if (cd == (iconv_t)-1) { |
|
ret = AVERROR(errno); |
|
av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context " |
|
"with input character encoding \"%s\"\n", avctx->sub_charenc); |
|
return ret; |
|
} |
|
iconv_close(cd); |
|
#else |
|
av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles " |
|
"conversion needs a libavcodec built with iconv support " |
|
"for this codec\n"); |
|
return AVERROR(ENOSYS); |
|
#endif |
|
} |
|
} |
|
} |
|
|
|
avctx->pts_correction_num_faulty_pts = |
|
avctx->pts_correction_num_faulty_dts = 0; |
|
avctx->pts_correction_last_pts = |
|
avctx->pts_correction_last_dts = INT64_MIN; |
|
|
|
if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY |
|
&& avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO) |
|
av_log(avctx, AV_LOG_WARNING, |
|
"gray decoding requested but not enabled at configuration time\n"); |
|
if (avctx->flags2 & AV_CODEC_FLAG2_EXPORT_MVS) { |
|
avctx->export_side_data |= AV_CODEC_EXPORT_DATA_MVS; |
|
} |
|
|
|
avci->in_pkt = av_packet_alloc(); |
|
avci->last_pkt_props = av_packet_alloc(); |
|
if (!avci->in_pkt || !avci->last_pkt_props) |
|
return AVERROR(ENOMEM); |
|
|
|
ret = decode_bsfs_init(avctx); |
|
if (ret < 0) |
|
return ret; |
|
|
|
return 0; |
|
} |
|
|
|
int ff_copy_palette(void *dst, const AVPacket *src, void *logctx) |
|
{ |
|
size_t size; |
|
const void *pal = av_packet_get_side_data(src, AV_PKT_DATA_PALETTE, &size); |
|
|
|
if (pal && size == AVPALETTE_SIZE) { |
|
memcpy(dst, pal, AVPALETTE_SIZE); |
|
return 1; |
|
} else if (pal) { |
|
av_log(logctx, AV_LOG_ERROR, |
|
"Palette size %"SIZE_SPECIFIER" is wrong\n", size); |
|
} |
|
return 0; |
|
}
|
|
|