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https://git.videolan.org/git/ffmpeg.git
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![Michael Niedermayer](/assets/img/avatar_default.png)
Found-by: inferno@chromium.org Reported-by: Dale Curtis <dalecurtis@google.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
201 lines
7.2 KiB
C
201 lines
7.2 KiB
C
/*
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* Copyright 2011 Stefano Sabatini | stefasab at gmail.com
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* libavcodec/libavfilter gluing utilities
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*/
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#include "avcodec.h"
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#include "libavutil/avassert.h"
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#include "libavutil/opt.h"
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int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
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{
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dst->pts = src->pts;
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dst->pos = av_frame_get_pkt_pos(src);
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dst->format = src->format;
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av_dict_free(&dst->metadata);
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av_dict_copy(&dst->metadata, av_frame_get_metadata(src), 0);
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switch (dst->type) {
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case AVMEDIA_TYPE_VIDEO:
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dst->video->w = src->width;
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dst->video->h = src->height;
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dst->video->sample_aspect_ratio = src->sample_aspect_ratio;
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dst->video->interlaced = src->interlaced_frame;
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dst->video->top_field_first = src->top_field_first;
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dst->video->key_frame = src->key_frame;
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dst->video->pict_type = src->pict_type;
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av_freep(&dst->video->qp_table);
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dst->video->qp_table_linesize = 0;
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if (src->qscale_table) {
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int qsize = src->qstride ? src->qstride * ((src->height+15)/16) : (src->width+15)/16;
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dst->video->qp_table = av_malloc(qsize);
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if (!dst->video->qp_table)
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return AVERROR(ENOMEM);
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dst->video->qp_table_linesize = src->qstride;
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dst->video->qp_table_size = qsize;
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memcpy(dst->video->qp_table, src->qscale_table, qsize);
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}
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break;
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case AVMEDIA_TYPE_AUDIO:
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dst->audio->sample_rate = src->sample_rate;
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dst->audio->channel_layout = src->channel_layout;
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dst->audio->channels = src->channels;
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if(src->channels < av_get_channel_layout_nb_channels(src->channel_layout)) {
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av_log(NULL, AV_LOG_ERROR, "libavfilter does not support this channel layout\n");
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return AVERROR(EINVAL);
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}
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break;
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default:
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return AVERROR(EINVAL);
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}
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return 0;
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}
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AVFilterBufferRef *avfilter_get_video_buffer_ref_from_frame(const AVFrame *frame,
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int perms)
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{
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AVFilterBufferRef *picref =
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avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize, perms,
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frame->width, frame->height,
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frame->format);
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if (!picref)
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return NULL;
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if (avfilter_copy_frame_props(picref, frame) < 0) {
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picref->buf->data[0] = NULL;
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avfilter_unref_bufferp(&picref);
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}
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return picref;
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}
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AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame,
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int perms)
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{
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AVFilterBufferRef *samplesref;
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int channels = av_frame_get_channels(frame);
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int64_t layout = av_frame_get_channel_layout(frame);
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if (layout && av_get_channel_layout_nb_channels(layout) != av_frame_get_channels(frame)) {
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av_log(0, AV_LOG_ERROR, "Layout indicates a different number of channels than actually present\n");
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return NULL;
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}
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samplesref = avfilter_get_audio_buffer_ref_from_arrays_channels(
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(uint8_t **)frame->extended_data, frame->linesize[0], perms,
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frame->nb_samples, frame->format, channels, layout);
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if (!samplesref)
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return NULL;
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if (avfilter_copy_frame_props(samplesref, frame) < 0) {
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samplesref->buf->data[0] = NULL;
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avfilter_unref_bufferp(&samplesref);
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}
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return samplesref;
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}
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AVFilterBufferRef *avfilter_get_buffer_ref_from_frame(enum AVMediaType type,
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const AVFrame *frame,
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int perms)
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{
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switch (type) {
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case AVMEDIA_TYPE_VIDEO:
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return avfilter_get_video_buffer_ref_from_frame(frame, perms);
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case AVMEDIA_TYPE_AUDIO:
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return avfilter_get_audio_buffer_ref_from_frame(frame, perms);
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default:
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return NULL;
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}
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}
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int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src)
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{
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int planes, nb_channels;
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if (!dst)
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return AVERROR(EINVAL);
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/* abort in case the src is NULL and dst is not, avoid inconsistent state in dst */
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av_assert0(src);
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memcpy(dst->data, src->data, sizeof(dst->data));
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memcpy(dst->linesize, src->linesize, sizeof(dst->linesize));
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dst->pts = src->pts;
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dst->format = src->format;
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av_frame_set_pkt_pos(dst, src->pos);
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switch (src->type) {
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case AVMEDIA_TYPE_VIDEO:
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av_assert0(src->video);
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dst->width = src->video->w;
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dst->height = src->video->h;
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dst->sample_aspect_ratio = src->video->sample_aspect_ratio;
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dst->interlaced_frame = src->video->interlaced;
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dst->top_field_first = src->video->top_field_first;
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dst->key_frame = src->video->key_frame;
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dst->pict_type = src->video->pict_type;
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break;
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case AVMEDIA_TYPE_AUDIO:
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av_assert0(src->audio);
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nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout);
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planes = av_sample_fmt_is_planar(src->format) ? nb_channels : 1;
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if (planes > FF_ARRAY_ELEMS(dst->data)) {
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dst->extended_data = av_mallocz(planes * sizeof(*dst->extended_data));
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if (!dst->extended_data)
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return AVERROR(ENOMEM);
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memcpy(dst->extended_data, src->extended_data,
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planes * sizeof(*dst->extended_data));
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} else
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dst->extended_data = dst->data;
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dst->nb_samples = src->audio->nb_samples;
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av_frame_set_sample_rate (dst, src->audio->sample_rate);
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av_frame_set_channel_layout(dst, src->audio->channel_layout);
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av_frame_set_channels (dst, src->audio->channels);
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break;
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default:
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return AVERROR(EINVAL);
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}
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return 0;
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}
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#ifdef FF_API_FILL_FRAME
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int avfilter_fill_frame_from_audio_buffer_ref(AVFrame *frame,
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const AVFilterBufferRef *samplesref)
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{
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return avfilter_copy_buf_props(frame, samplesref);
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}
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int avfilter_fill_frame_from_video_buffer_ref(AVFrame *frame,
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const AVFilterBufferRef *picref)
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{
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return avfilter_copy_buf_props(frame, picref);
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}
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int avfilter_fill_frame_from_buffer_ref(AVFrame *frame,
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const AVFilterBufferRef *ref)
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{
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return avfilter_copy_buf_props(frame, ref);
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}
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#endif
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