2 * This file is part of FFmpeg.
4 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #include "libavutil/audioconvert.h"
20 #include "libavutil/avassert.h"
21 #include "libavcodec/avcodec.h"
27 void ff_avfilter_default_free_buffer(AVFilterBuffer *ptr)
29 if (ptr->extended_data != ptr->data)
30 av_freep(&ptr->extended_data);
31 av_free(ptr->data[0]);
35 AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
37 AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef));
41 if (ref->type == AVMEDIA_TYPE_VIDEO) {
42 ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps));
47 *ret->video = *ref->video;
48 ret->extended_data = ret->data;
49 } else if (ref->type == AVMEDIA_TYPE_AUDIO) {
50 ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps));
55 *ret->audio = *ref->audio;
57 if (ref->extended_data && ref->extended_data != ref->data) {
58 int nb_channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout);
59 if (!(ret->extended_data = av_malloc(sizeof(*ret->extended_data) *
61 av_freep(&ret->audio);
65 memcpy(ret->extended_data, ref->extended_data,
66 sizeof(*ret->extended_data) * nb_channels);
68 ret->extended_data = ret->data;
71 ret->buf->refcount ++;
75 void ff_free_pool(AVFilterPool *pool)
79 av_assert0(pool->refcount > 0);
81 for (i = 0; i < POOL_SIZE; i++) {
83 AVFilterBufferRef *picref = pool->pic[i];
84 /* free buffer: picrefs stored in the pool are not
85 * supposed to contain a free callback */
86 av_assert0(!picref->buf->refcount);
87 av_freep(&picref->buf->data[0]);
88 av_freep(&picref->buf);
90 av_freep(&picref->audio);
91 av_freep(&picref->video);
92 av_freep(&pool->pic[i]);
98 if (!--pool->refcount) {
99 av_assert0(!pool->count);
104 static void store_in_pool(AVFilterBufferRef *ref)
107 AVFilterPool *pool= ref->buf->priv;
109 av_assert0(ref->buf->data[0]);
110 av_assert0(pool->refcount>0);
112 if (pool->count == POOL_SIZE) {
113 AVFilterBufferRef *ref1 = pool->pic[0];
114 av_freep(&ref1->video);
115 av_freep(&ref1->audio);
116 av_freep(&ref1->buf->data[0]);
117 av_freep(&ref1->buf);
119 memmove(&pool->pic[0], &pool->pic[1], sizeof(void*)*(POOL_SIZE-1));
121 pool->pic[POOL_SIZE-1] = NULL;
124 for (i = 0; i < POOL_SIZE; i++) {
131 if (pool->draining) {
137 void avfilter_unref_buffer(AVFilterBufferRef *ref)
141 av_assert0(ref->buf->refcount > 0);
142 if (!(--ref->buf->refcount)) {
143 if (!ref->buf->free) {
147 ref->buf->free(ref->buf);
149 if (ref->extended_data != ref->data)
150 av_freep(&ref->extended_data);
151 av_freep(&ref->video);
152 av_freep(&ref->audio);
156 void avfilter_unref_bufferp(AVFilterBufferRef **ref)
158 avfilter_unref_buffer(*ref);
162 int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
165 dst->pos = src->pkt_pos;
166 dst->format = src->format;
169 case AVMEDIA_TYPE_VIDEO:
170 dst->video->w = src->width;
171 dst->video->h = src->height;
172 dst->video->sample_aspect_ratio = src->sample_aspect_ratio;
173 dst->video->interlaced = src->interlaced_frame;
174 dst->video->top_field_first = src->top_field_first;
175 dst->video->key_frame = src->key_frame;
176 dst->video->pict_type = src->pict_type;
178 case AVMEDIA_TYPE_AUDIO:
179 dst->audio->sample_rate = src->sample_rate;
180 dst->audio->channel_layout = src->channel_layout;
183 return AVERROR(EINVAL);
189 int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src)
191 int planes, nb_channels;
193 memcpy(dst->data, src->data, sizeof(dst->data));
194 memcpy(dst->linesize, src->linesize, sizeof(dst->linesize));
197 dst->format = src->format;
200 case AVMEDIA_TYPE_VIDEO:
201 dst->width = src->video->w;
202 dst->height = src->video->h;
203 dst->sample_aspect_ratio = src->video->sample_aspect_ratio;
204 dst->interlaced_frame = src->video->interlaced;
205 dst->top_field_first = src->video->top_field_first;
206 dst->key_frame = src->video->key_frame;
207 dst->pict_type = src->video->pict_type;
209 case AVMEDIA_TYPE_AUDIO:
210 nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout);
211 planes = av_sample_fmt_is_planar(src->format) ? nb_channels : 1;
213 if (planes > FF_ARRAY_ELEMS(dst->data)) {
214 dst->extended_data = av_mallocz(planes * sizeof(*dst->extended_data));
215 if (!dst->extended_data)
216 return AVERROR(ENOMEM);
217 memcpy(dst->extended_data, src->extended_data,
218 planes * sizeof(dst->extended_data));
220 dst->extended_data = dst->data;
222 dst->sample_rate = src->audio->sample_rate;
223 dst->channel_layout = src->audio->channel_layout;
224 dst->nb_samples = src->audio->nb_samples;
227 return AVERROR(EINVAL);
233 void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src)
235 // copy common properties
240 case AVMEDIA_TYPE_VIDEO: *dst->video = *src->video; break;
241 case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break;