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 "libavutil/internal.h"
28 #include "libavcodec/avcodec.h"
36 #if FF_API_AVFILTERBUFFER
37 void ff_avfilter_default_free_buffer(AVFilterBuffer *ptr)
39 if (ptr->extended_data != ptr->data)
40 av_freep(&ptr->extended_data);
41 av_freep(&ptr->data[0]);
45 static int copy_video_props(AVFilterBufferRefVideoProps *dst, AVFilterBufferRefVideoProps *src) {
48 int qsize = src->qp_table_size;
49 dst->qp_table = av_malloc(qsize);
51 av_log(NULL, AV_LOG_ERROR, "Failed to allocate qp_table\n");
52 dst->qp_table_size = 0;
53 return AVERROR(ENOMEM);
55 memcpy(dst->qp_table, src->qp_table, qsize);
60 AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
62 AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef));
68 av_dict_copy(&ret->metadata, ref->metadata, 0);
70 if (ref->type == AVMEDIA_TYPE_VIDEO) {
71 ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps));
76 copy_video_props(ret->video, ref->video);
77 ret->extended_data = ret->data;
78 } else if (ref->type == AVMEDIA_TYPE_AUDIO) {
79 ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps));
84 *ret->audio = *ref->audio;
86 if (ref->extended_data && ref->extended_data != ref->data) {
87 int nb_channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout);
88 if (!(ret->extended_data = av_malloc_array(sizeof(*ret->extended_data),
90 av_freep(&ret->audio);
94 memcpy(ret->extended_data, ref->extended_data,
95 sizeof(*ret->extended_data) * nb_channels);
97 ret->extended_data = ret->data;
100 ret->buf->refcount ++;
104 void avfilter_unref_buffer(AVFilterBufferRef *ref)
108 av_assert0(ref->buf->refcount > 0);
109 if (!(--ref->buf->refcount))
110 ref->buf->free(ref->buf);
111 if (ref->extended_data != ref->data)
112 av_freep(&ref->extended_data);
114 av_freep(&ref->video->qp_table);
115 av_freep(&ref->video);
116 av_freep(&ref->audio);
117 av_dict_free(&ref->metadata);
121 void avfilter_unref_bufferp(AVFilterBufferRef **ref)
123 FF_DISABLE_DEPRECATION_WARNINGS
124 avfilter_unref_buffer(*ref);
125 FF_ENABLE_DEPRECATION_WARNINGS
129 int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
132 dst->pos = av_frame_get_pkt_pos(src);
133 dst->format = src->format;
135 av_dict_free(&dst->metadata);
136 av_dict_copy(&dst->metadata, av_frame_get_metadata(src), 0);
139 case AVMEDIA_TYPE_VIDEO:
140 dst->video->w = src->width;
141 dst->video->h = src->height;
142 dst->video->sample_aspect_ratio = src->sample_aspect_ratio;
143 dst->video->interlaced = src->interlaced_frame;
144 dst->video->top_field_first = src->top_field_first;
145 dst->video->key_frame = src->key_frame;
146 dst->video->pict_type = src->pict_type;
148 case AVMEDIA_TYPE_AUDIO:
149 dst->audio->sample_rate = src->sample_rate;
150 dst->audio->channel_layout = src->channel_layout;
153 return AVERROR(EINVAL);
159 void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, const AVFilterBufferRef *src)
161 // copy common properties
166 case AVMEDIA_TYPE_VIDEO: {
167 if (dst->video->qp_table)
168 av_freep(&dst->video->qp_table);
169 copy_video_props(dst->video, src->video);
172 case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break;
176 av_dict_free(&dst->metadata);
177 av_dict_copy(&dst->metadata, src->metadata, 0);
179 #endif /* FF_API_AVFILTERBUFFER */