static void get_frame_defaults(AVFrame *frame)
{
if (frame->extended_data != frame->data)
av_freep(&frame->extended_data);
memset(frame, 0, sizeof(*frame));
frame->pts =
frame->pkt_dts =
frame->pkt_pts = AV_NOPTS_VALUE;
av_frame_set_best_effort_timestamp(frame, AV_NOPTS_VALUE);
av_frame_set_pkt_duration (frame, 0);
av_frame_set_pkt_pos (frame, -1);
av_frame_set_pkt_size (frame, -1);
frame->key_frame = 1;
frame->sample_aspect_ratio = (AVRational) {
0, 1
};
frame->format = -1; /* unknown */
frame->extended_data = frame->data;
frame->color_primaries = AVCOL_PRI_UNSPECIFIED;
frame->color_trc = AVCOL_TRC_UNSPECIFIED;
frame->colorspace = AVCOL_SPC_UNSPECIFIED;
frame->color_range = AVCOL_RANGE_UNSPECIFIED;
frame->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
}
int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src)
{
int planes, nb_channels;
if (!dst)
return AVERROR(EINVAL);
/* abort in case the src is NULL and dst is not, avoid inconsistent state in dst */
av_assert0(src);
memcpy(dst->data, src->data, sizeof(dst->data));
memcpy(dst->linesize, src->linesize, sizeof(dst->linesize));
dst->pts = src->pts;
dst->format = src->format;
av_frame_set_pkt_pos(dst, src->pos);
switch (src->type) {
case AVMEDIA_TYPE_VIDEO:
av_assert0(src->video);
dst->width = src->video->w;
dst->height = src->video->h;
dst->sample_aspect_ratio = src->video->sample_aspect_ratio;
dst->interlaced_frame = src->video->interlaced;
dst->top_field_first = src->video->top_field_first;
dst->key_frame = src->video->key_frame;
dst->pict_type = src->video->pict_type;
break;
case AVMEDIA_TYPE_AUDIO:
av_assert0(src->audio);
nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout);
planes = av_sample_fmt_is_planar(src->format) ? nb_channels : 1;
if (planes > FF_ARRAY_ELEMS(dst->data)) {
dst->extended_data = av_mallocz_array(planes, sizeof(*dst->extended_data));
if (!dst->extended_data)
return AVERROR(ENOMEM);
memcpy(dst->extended_data, src->extended_data,
planes * sizeof(*dst->extended_data));
} else
dst->extended_data = dst->data;
dst->nb_samples = src->audio->nb_samples;
av_frame_set_sample_rate (dst, src->audio->sample_rate);
av_frame_set_channel_layout(dst, src->audio->channel_layout);
av_frame_set_channels (dst, src->audio->channels);
break;
default:
return AVERROR(EINVAL);
}
return 0;
}
