int avfilter_request_frame(AVFilterLink *link) { FF_DPRINTF_START(NULL, request_frame); ff_dlog_link(NULL, link, 1); if (link->srcpad->request_frame) return link->srcpad->request_frame(link); else if (link->src->inputs[0]) return avfilter_request_frame(link->src->inputs[0]); else return -1; }
int ff_request_frame(AVFilterLink *link) { FF_DPRINTF_START(NULL, request_frame); ff_dlog_link(NULL, link, 1); if (link->srcpad->request_frame) return link->srcpad->request_frame(link); else if (link->src->inputs[0]) return ff_request_frame(link->src->inputs[0]); else return AVERROR(EINVAL); }
int ff_filter_frame(AVFilterLink *link, AVFrame *frame) { int (*filter_frame)(AVFilterLink *, AVFrame *); AVFilterPad *dst = link->dstpad; AVFrame *out; FF_DPRINTF_START(NULL, filter_frame); ff_dlog_link(NULL, link, 1); if (!(filter_frame = dst->filter_frame)) filter_frame = default_filter_frame; /* copy the frame if needed */ if (dst->needs_writable && !av_frame_is_writable(frame)) { av_log(link->dst, AV_LOG_DEBUG, "Copying data in avfilter.\n"); switch (link->type) { case AVMEDIA_TYPE_VIDEO: out = ff_get_video_buffer(link, link->w, link->h); break; case AVMEDIA_TYPE_AUDIO: out = ff_get_audio_buffer(link, frame->nb_samples); break; default: return AVERROR(EINVAL); } if (!out) { av_frame_free(&frame); return AVERROR(ENOMEM); } av_frame_copy_props(out, frame); switch (link->type) { case AVMEDIA_TYPE_VIDEO: av_image_copy(out->data, out->linesize, frame->data, frame->linesize, frame->format, frame->width, frame->height); break; case AVMEDIA_TYPE_AUDIO: av_samples_copy(out->extended_data, frame->extended_data, 0, 0, frame->nb_samples, av_get_channel_layout_nb_channels(frame->channel_layout), frame->format); break; default: return AVERROR(EINVAL); } av_frame_free(&frame); } else out = frame; return filter_frame(link, out); }
void ff_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref) { void (*filter_samples)(AVFilterLink *, AVFilterBufferRef *); AVFilterPad *dst = link->dstpad; int64_t pts; FF_DPRINTF_START(NULL, filter_samples); ff_dlog_link(NULL, link, 1); if (!(filter_samples = dst->filter_samples)) filter_samples = ff_default_filter_samples; /* prepare to copy the samples if the buffer has insufficient permissions */ if ((dst->min_perms & samplesref->perms) != dst->min_perms || dst->rej_perms & samplesref->perms) { int i, size, planar = av_sample_fmt_is_planar(samplesref->format); int planes = !planar ? 1: av_get_channel_layout_nb_channels(samplesref->audio->channel_layout); av_log(link->dst, AV_LOG_DEBUG, "Copying audio data in avfilter (have perms %x, need %x, reject %x)\n", samplesref->perms, link->dstpad->min_perms, link->dstpad->rej_perms); link->cur_buf = ff_default_get_audio_buffer(link, dst->min_perms, samplesref->audio->nb_samples); link->cur_buf->pts = samplesref->pts; link->cur_buf->audio->sample_rate = samplesref->audio->sample_rate; /* Copy actual data into new samples buffer */ /* src can be larger than dst if it was allocated larger than necessary. dst can be slightly larger due to extra alignment padding. */ size = FFMIN(samplesref->linesize[0], link->cur_buf->linesize[0]); for (i = 0; samplesref->data[i] && i < 8; i++) memcpy(link->cur_buf->data[i], samplesref->data[i], size); for (i = 0; i < planes; i++) memcpy(link->cur_buf->extended_data[i], samplesref->extended_data[i], size); avfilter_unref_buffer(samplesref); } else link->cur_buf = samplesref; pts = link->cur_buf->pts; filter_samples(link, link->cur_buf); ff_update_link_current_pts(link, pts); }