2 * Copyright Stefano Sabatini <stefasab gmail com>
3 * Copyright Anton Khirnov <anton khirnov net>
4 * Copyright Michael Niedermayer <michaelni gmx at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "libavutil/audioconvert.h"
24 #include "libavutil/avassert.h"
25 #include "libavutil/common.h"
26 #include "libavutil/imgutils.h"
27 #include "libavcodec/avcodec.h"
34 void ff_avfilter_default_free_buffer(AVFilterBuffer *ptr)
36 if (ptr->extended_data != ptr->data)
37 av_freep(&ptr->extended_data);
38 av_free(ptr->data[0]);
42 AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
44 AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef));
48 if (ref->type == AVMEDIA_TYPE_VIDEO) {
49 ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps));
54 *ret->video = *ref->video;
55 ret->extended_data = ret->data;
56 } else if (ref->type == AVMEDIA_TYPE_AUDIO) {
57 ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps));
62 *ret->audio = *ref->audio;
64 if (ref->extended_data && ref->extended_data != ref->data) {
65 int nb_channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout);
66 if (!(ret->extended_data = av_malloc(sizeof(*ret->extended_data) *
68 av_freep(&ret->audio);
72 memcpy(ret->extended_data, ref->extended_data,
73 sizeof(*ret->extended_data) * nb_channels);
75 ret->extended_data = ret->data;
78 ret->buf->refcount ++;
82 void ff_free_pool(AVFilterPool *pool)
86 av_assert0(pool->refcount > 0);
88 for (i = 0; i < POOL_SIZE; i++) {
90 AVFilterBufferRef *picref = pool->pic[i];
91 /* free buffer: picrefs stored in the pool are not
92 * supposed to contain a free callback */
93 av_assert0(!picref->buf->refcount);
94 av_freep(&picref->buf->data[0]);
95 av_freep(&picref->buf);
97 av_freep(&picref->audio);
98 av_freep(&picref->video);
99 av_freep(&pool->pic[i]);
105 if (!--pool->refcount) {
106 av_assert0(!pool->count);
111 static void store_in_pool(AVFilterBufferRef *ref)
114 AVFilterPool *pool= ref->buf->priv;
116 av_assert0(ref->buf->data[0]);
117 av_assert0(pool->refcount>0);
119 if (pool->count == POOL_SIZE) {
120 AVFilterBufferRef *ref1 = pool->pic[0];
121 av_freep(&ref1->video);
122 av_freep(&ref1->audio);
123 av_freep(&ref1->buf->data[0]);
124 av_freep(&ref1->buf);
126 memmove(&pool->pic[0], &pool->pic[1], sizeof(void*)*(POOL_SIZE-1));
128 pool->pic[POOL_SIZE-1] = NULL;
131 for (i = 0; i < POOL_SIZE; i++) {
138 if (pool->draining) {
144 void avfilter_unref_buffer(AVFilterBufferRef *ref)
148 av_assert0(ref->buf->refcount > 0);
149 if (!(--ref->buf->refcount)) {
150 if (!ref->buf->free) {
154 ref->buf->free(ref->buf);
156 if (ref->extended_data != ref->data)
157 av_freep(&ref->extended_data);
158 av_freep(&ref->video);
159 av_freep(&ref->audio);
163 void avfilter_unref_bufferp(AVFilterBufferRef **ref)
165 avfilter_unref_buffer(*ref);
169 void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src)
171 // copy common properties
176 case AVMEDIA_TYPE_VIDEO: *dst->video = *src->video; break;
177 case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break;
182 AVFilterBufferRef *ff_copy_buffer_ref(AVFilterLink *outlink,
183 AVFilterBufferRef *ref)
185 AVFilterBufferRef *buf;
188 switch (outlink->type) {
190 case AVMEDIA_TYPE_VIDEO:
191 buf = ff_get_video_buffer(outlink, AV_PERM_WRITE,
192 ref->video->w, ref->video->h);
195 av_image_copy(buf->data, buf->linesize,
196 (void*)ref->data, ref->linesize,
197 ref->format, ref->video->w, ref->video->h);
200 case AVMEDIA_TYPE_AUDIO:
201 buf = ff_get_audio_buffer(outlink, AV_PERM_WRITE,
202 ref->audio->nb_samples);
205 channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout);
206 av_samples_copy(buf->extended_data, ref->buf->extended_data,
207 0, 0, ref->audio->nb_samples,
215 avfilter_copy_buffer_ref_props(buf, ref);