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/channel_layout.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));
59 av_dict_copy(&ret->metadata, ref->metadata, 0);
61 if (ref->type == AVMEDIA_TYPE_VIDEO) {
62 ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps));
67 copy_video_props(ret->video, ref->video);
68 ret->extended_data = ret->data;
69 } else if (ref->type == AVMEDIA_TYPE_AUDIO) {
70 ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps));
75 *ret->audio = *ref->audio;
77 if (ref->extended_data && ref->extended_data != ref->data) {
78 int nb_channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout);
79 if (!(ret->extended_data = av_malloc(sizeof(*ret->extended_data) *
81 av_freep(&ret->audio);
85 memcpy(ret->extended_data, ref->extended_data,
86 sizeof(*ret->extended_data) * nb_channels);
88 ret->extended_data = ret->data;
91 ret->buf->refcount ++;
95 void avfilter_unref_buffer(AVFilterBufferRef *ref)
99 av_assert0(ref->buf->refcount > 0);
100 if (!(--ref->buf->refcount))
101 ref->buf->free(ref->buf);
102 if (ref->extended_data != ref->data)
103 av_freep(&ref->extended_data);
105 av_freep(&ref->video->qp_table);
106 av_freep(&ref->video);
107 av_freep(&ref->audio);
108 av_dict_free(&ref->metadata);
112 void avfilter_unref_bufferp(AVFilterBufferRef **ref)
114 avfilter_unref_buffer(*ref);
118 int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
121 dst->pos = av_frame_get_pkt_pos(src);
122 dst->format = src->format;
124 av_dict_free(&dst->metadata);
125 av_dict_copy(&dst->metadata, av_frame_get_metadata(src), 0);
128 case AVMEDIA_TYPE_VIDEO:
129 dst->video->w = src->width;
130 dst->video->h = src->height;
131 dst->video->sample_aspect_ratio = src->sample_aspect_ratio;
132 dst->video->interlaced = src->interlaced_frame;
133 dst->video->top_field_first = src->top_field_first;
134 dst->video->key_frame = src->key_frame;
135 dst->video->pict_type = src->pict_type;
137 case AVMEDIA_TYPE_AUDIO:
138 dst->audio->sample_rate = src->sample_rate;
139 dst->audio->channel_layout = src->channel_layout;
142 return AVERROR(EINVAL);
148 void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src)
150 // copy common properties
155 case AVMEDIA_TYPE_VIDEO: {
156 if (dst->video->qp_table)
157 av_freep(&dst->video->qp_table);
158 copy_video_props(dst->video, src->video);
161 case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break;
165 av_dict_free(&dst->metadata);
166 av_dict_copy(&dst->metadata, src->metadata, 0);