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 static void copy_video_props(AVFilterBufferRefVideoProps *dst, AVFilterBufferRefVideoProps *src) {
45 int qsize = src->qp_table_size;
46 dst->qp_table = av_malloc(qsize);
47 memcpy(dst->qp_table, src->qp_table, qsize);
51 AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
53 AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef));
57 if (ref->type == AVMEDIA_TYPE_VIDEO) {
58 ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps));
63 copy_video_props(ret->video, ref->video);
64 ret->extended_data = ret->data;
65 } else if (ref->type == AVMEDIA_TYPE_AUDIO) {
66 ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps));
71 *ret->audio = *ref->audio;
73 if (ref->extended_data && ref->extended_data != ref->data) {
74 int nb_channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout);
75 if (!(ret->extended_data = av_malloc(sizeof(*ret->extended_data) *
77 av_freep(&ret->audio);
81 memcpy(ret->extended_data, ref->extended_data,
82 sizeof(*ret->extended_data) * nb_channels);
84 ret->extended_data = ret->data;
87 ret->buf->refcount ++;
91 void ff_free_pool(AVFilterPool *pool)
95 av_assert0(pool->refcount > 0);
97 for (i = 0; i < POOL_SIZE; i++) {
99 AVFilterBufferRef *picref = pool->pic[i];
100 /* free buffer: picrefs stored in the pool are not
101 * supposed to contain a free callback */
102 av_assert0(!picref->buf->refcount);
103 av_freep(&picref->buf->data[0]);
104 av_freep(&picref->buf);
106 av_freep(&picref->audio);
107 av_assert0(!picref->video || !picref->video->qp_table);
108 av_freep(&picref->video);
109 av_freep(&pool->pic[i]);
115 if (!--pool->refcount) {
116 av_assert0(!pool->count);
121 static void store_in_pool(AVFilterBufferRef *ref)
124 AVFilterPool *pool= ref->buf->priv;
126 av_assert0(ref->buf->data[0]);
127 av_assert0(pool->refcount>0);
130 av_freep(&ref->video->qp_table);
132 if (pool->count == POOL_SIZE) {
133 AVFilterBufferRef *ref1 = pool->pic[0];
134 av_freep(&ref1->video);
135 av_freep(&ref1->audio);
136 av_freep(&ref1->buf->data[0]);
137 av_freep(&ref1->buf);
139 memmove(&pool->pic[0], &pool->pic[1], sizeof(void*)*(POOL_SIZE-1));
141 pool->pic[POOL_SIZE-1] = NULL;
144 for (i = 0; i < POOL_SIZE; i++) {
151 if (pool->draining) {
157 void avfilter_unref_buffer(AVFilterBufferRef *ref)
161 av_assert0(ref->buf->refcount > 0);
162 if (!(--ref->buf->refcount)) {
163 if (!ref->buf->free) {
167 ref->buf->free(ref->buf);
169 if (ref->extended_data != ref->data)
170 av_freep(&ref->extended_data);
172 av_freep(&ref->video->qp_table);
173 av_freep(&ref->video);
174 av_freep(&ref->audio);
178 void avfilter_unref_bufferp(AVFilterBufferRef **ref)
180 avfilter_unref_buffer(*ref);
184 void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src)
186 // copy common properties
191 case AVMEDIA_TYPE_VIDEO: {
192 if (dst->video->qp_table)
193 av_freep(&dst->video->qp_table);
194 copy_video_props(dst->video, src->video);
197 case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break;
202 AVFilterBufferRef *ff_copy_buffer_ref(AVFilterLink *outlink,
203 AVFilterBufferRef *ref)
205 AVFilterBufferRef *buf;
208 switch (outlink->type) {
210 case AVMEDIA_TYPE_VIDEO:
211 buf = ff_get_video_buffer(outlink, AV_PERM_WRITE,
212 ref->video->w, ref->video->h);
215 av_image_copy(buf->data, buf->linesize,
216 (void*)ref->data, ref->linesize,
217 ref->format, ref->video->w, ref->video->h);
220 case AVMEDIA_TYPE_AUDIO:
221 buf = ff_get_audio_buffer(outlink, AV_PERM_WRITE,
222 ref->audio->nb_samples);
225 channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout);
226 av_samples_copy(buf->extended_data, ref->buf->extended_data,
227 0, 0, ref->audio->nb_samples,
235 avfilter_copy_buffer_ref_props(buf, ref);