2 * This file is part of Libav.
4 * Libav is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * Libav is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #include "libavutil/channel_layout.h"
20 #include "libavutil/common.h"
21 #include "libavcodec/avcodec.h"
27 #if FF_API_AVFILTERBUFFER
28 /* TODO: buffer pool. see comment for avfilter_default_get_video_buffer() */
29 void ff_avfilter_default_free_buffer(AVFilterBuffer *ptr)
31 if (ptr->extended_data != ptr->data)
32 av_freep(&ptr->extended_data);
33 av_free(ptr->data[0]);
37 AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
39 AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef));
43 if (ref->type == AVMEDIA_TYPE_VIDEO) {
44 ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps));
49 *ret->video = *ref->video;
50 ret->extended_data = ret->data;
51 } else if (ref->type == AVMEDIA_TYPE_AUDIO) {
52 ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps));
57 *ret->audio = *ref->audio;
59 if (ref->extended_data != ref->data) {
60 int nb_channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout);
61 if (!(ret->extended_data = av_malloc(sizeof(*ret->extended_data) *
63 av_freep(&ret->audio);
67 memcpy(ret->extended_data, ref->extended_data,
68 sizeof(*ret->extended_data) * nb_channels);
70 ret->extended_data = ret->data;
73 ret->buf->refcount ++;
77 void avfilter_unref_buffer(AVFilterBufferRef *ref)
81 if (!(--ref->buf->refcount))
82 ref->buf->free(ref->buf);
83 if (ref->extended_data != ref->data)
84 av_freep(&ref->extended_data);
90 void avfilter_unref_bufferp(AVFilterBufferRef **ref)
92 avfilter_unref_buffer(*ref);
96 int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
99 dst->format = src->format;
102 case AVMEDIA_TYPE_VIDEO:
103 dst->video->w = src->width;
104 dst->video->h = src->height;
105 dst->video->pixel_aspect = src->sample_aspect_ratio;
106 dst->video->interlaced = src->interlaced_frame;
107 dst->video->top_field_first = src->top_field_first;
108 dst->video->key_frame = src->key_frame;
109 dst->video->pict_type = src->pict_type;
111 case AVMEDIA_TYPE_AUDIO:
112 dst->audio->sample_rate = src->sample_rate;
113 dst->audio->channel_layout = src->channel_layout;
116 return AVERROR(EINVAL);
122 int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src)
124 int planes, nb_channels;
126 memcpy(dst->data, src->data, sizeof(dst->data));
127 memcpy(dst->linesize, src->linesize, sizeof(dst->linesize));
130 dst->format = src->format;
133 case AVMEDIA_TYPE_VIDEO:
134 dst->width = src->video->w;
135 dst->height = src->video->h;
136 dst->sample_aspect_ratio = src->video->pixel_aspect;
137 dst->interlaced_frame = src->video->interlaced;
138 dst->top_field_first = src->video->top_field_first;
139 dst->key_frame = src->video->key_frame;
140 dst->pict_type = src->video->pict_type;
142 case AVMEDIA_TYPE_AUDIO:
143 nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout);
144 planes = av_sample_fmt_is_planar(src->format) ? nb_channels : 1;
146 if (planes > FF_ARRAY_ELEMS(dst->data)) {
147 dst->extended_data = av_mallocz(planes * sizeof(*dst->extended_data));
148 if (!dst->extended_data)
149 return AVERROR(ENOMEM);
150 memcpy(dst->extended_data, src->extended_data,
151 planes * sizeof(*dst->extended_data));
153 dst->extended_data = dst->data;
155 dst->sample_rate = src->audio->sample_rate;
156 dst->channel_layout = src->audio->channel_layout;
157 dst->nb_samples = src->audio->nb_samples;
160 return AVERROR(EINVAL);
166 void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src)
168 // copy common properties
173 case AVMEDIA_TYPE_VIDEO: *dst->video = *src->video; break;
174 case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break;
178 #endif /* FF_API_AVFILTERBUFFER */