2 * Copyright 2011 Stefano Sabatini | stefasab at gmail.com
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * libavcodec/libavfilter gluing utilities
27 #include "libavutil/avassert.h"
28 #include "libavutil/channel_layout.h"
29 #include "libavutil/opt.h"
31 #if FF_API_AVFILTERBUFFER
32 AVFilterBufferRef *avfilter_get_video_buffer_ref_from_frame(const AVFrame *frame,
35 AVFilterBufferRef *picref =
36 avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize, perms,
37 frame->width, frame->height,
41 if (avfilter_copy_frame_props(picref, frame) < 0) {
42 picref->buf->data[0] = NULL;
43 avfilter_unref_bufferp(&picref);
48 AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame,
51 AVFilterBufferRef *samplesref;
52 int channels = av_frame_get_channels(frame);
53 int64_t layout = av_frame_get_channel_layout(frame);
55 if (layout && av_get_channel_layout_nb_channels(layout) != av_frame_get_channels(frame)) {
56 av_log(0, AV_LOG_ERROR, "Layout indicates a different number of channels than actually present\n");
60 samplesref = avfilter_get_audio_buffer_ref_from_arrays_channels(
61 (uint8_t **)frame->extended_data, frame->linesize[0], perms,
62 frame->nb_samples, frame->format, channels, layout);
65 if (avfilter_copy_frame_props(samplesref, frame) < 0) {
66 samplesref->buf->data[0] = NULL;
67 avfilter_unref_bufferp(&samplesref);
72 AVFilterBufferRef *avfilter_get_buffer_ref_from_frame(enum AVMediaType type,
77 case AVMEDIA_TYPE_VIDEO:
78 return avfilter_get_video_buffer_ref_from_frame(frame, perms);
79 case AVMEDIA_TYPE_AUDIO:
80 return avfilter_get_audio_buffer_ref_from_frame(frame, perms);
86 int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src)
88 int planes, nb_channels;
91 return AVERROR(EINVAL);
92 /* abort in case the src is NULL and dst is not, avoid inconsistent state in dst */
95 memcpy(dst->data, src->data, sizeof(dst->data));
96 memcpy(dst->linesize, src->linesize, sizeof(dst->linesize));
99 dst->format = src->format;
100 av_frame_set_pkt_pos(dst, src->pos);
103 case AVMEDIA_TYPE_VIDEO:
104 av_assert0(src->video);
105 dst->width = src->video->w;
106 dst->height = src->video->h;
107 dst->sample_aspect_ratio = src->video->sample_aspect_ratio;
108 dst->interlaced_frame = src->video->interlaced;
109 dst->top_field_first = src->video->top_field_first;
110 dst->key_frame = src->video->key_frame;
111 dst->pict_type = src->video->pict_type;
113 case AVMEDIA_TYPE_AUDIO:
114 av_assert0(src->audio);
115 nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout);
116 planes = av_sample_fmt_is_planar(src->format) ? nb_channels : 1;
118 if (planes > FF_ARRAY_ELEMS(dst->data)) {
119 dst->extended_data = av_mallocz(planes * sizeof(*dst->extended_data));
120 if (!dst->extended_data)
121 return AVERROR(ENOMEM);
122 memcpy(dst->extended_data, src->extended_data,
123 planes * sizeof(*dst->extended_data));
125 dst->extended_data = dst->data;
126 dst->nb_samples = src->audio->nb_samples;
127 av_frame_set_sample_rate (dst, src->audio->sample_rate);
128 av_frame_set_channel_layout(dst, src->audio->channel_layout);
129 av_frame_set_channels (dst, src->audio->channels);
132 return AVERROR(EINVAL);
139 #if FF_API_FILL_FRAME
140 int avfilter_fill_frame_from_audio_buffer_ref(AVFrame *frame,
141 const AVFilterBufferRef *samplesref)
143 return avfilter_copy_buf_props(frame, samplesref);
146 int avfilter_fill_frame_from_video_buffer_ref(AVFrame *frame,
147 const AVFilterBufferRef *picref)
149 return avfilter_copy_buf_props(frame, picref);
152 int avfilter_fill_frame_from_buffer_ref(AVFrame *frame,
153 const AVFilterBufferRef *ref)
155 return avfilter_copy_buf_props(frame, ref);