summaryrefslogtreecommitdiffstats
path: root/libavfilter/buffer.c
blob: 0327952e792171835942532a8cbfc11be48d5a84 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
/*
 * Copyright Stefano Sabatini <stefasab gmail com>
 * Copyright Anton Khirnov <anton khirnov net>
 * Copyright Michael Niedermayer <michaelni gmx at>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/channel_layout.h"
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavcodec/avcodec.h"

#include "avfilter.h"
#include "internal.h"
#include "audio.h"
#include "avcodec.h"
#include "version.h"

#if FF_API_AVFILTERBUFFER
void ff_avfilter_default_free_buffer(AVFilterBuffer *ptr)
{
    if (ptr->extended_data != ptr->data)
        av_freep(&ptr->extended_data);
    av_free(ptr->data[0]);
    av_free(ptr);
}

static void copy_video_props(AVFilterBufferRefVideoProps *dst, AVFilterBufferRefVideoProps *src) {
    *dst = *src;
    if (src->qp_table) {
        int qsize = src->qp_table_size;
        dst->qp_table = av_malloc(qsize);
        memcpy(dst->qp_table, src->qp_table, qsize);
    }
}

AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
{
    AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef));
    if (!ret)
        return NULL;
    *ret = *ref;

    ret->metadata = NULL;
    av_dict_copy(&ret->metadata, ref->metadata, 0);

    if (ref->type == AVMEDIA_TYPE_VIDEO) {
        ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps));
        if (!ret->video) {
            av_free(ret);
            return NULL;
        }
        copy_video_props(ret->video, ref->video);
        ret->extended_data = ret->data;
    } else if (ref->type == AVMEDIA_TYPE_AUDIO) {
        ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps));
        if (!ret->audio) {
            av_free(ret);
            return NULL;
        }
        *ret->audio = *ref->audio;

        if (ref->extended_data && ref->extended_data != ref->data) {
            int nb_channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout);
            if (!(ret->extended_data = av_malloc_array(sizeof(*ret->extended_data),
                                                 nb_channels))) {
                av_freep(&ret->audio);
                av_freep(&ret);
                return NULL;
            }
            memcpy(ret->extended_data, ref->extended_data,
                   sizeof(*ret->extended_data) * nb_channels);
        } else
            ret->extended_data = ret->data;
    }
    ret->perms &= pmask;
    ret->buf->refcount ++;
    return ret;
}

void avfilter_unref_buffer(AVFilterBufferRef *ref)
{
    if (!ref)
        return;
    av_assert0(ref->buf->refcount > 0);
    if (!(--ref->buf->refcount))
        ref->buf->free(ref->buf);
    if (ref->extended_data != ref->data)
        av_freep(&ref->extended_data);
    if (ref->video)
        av_freep(&ref->video->qp_table);
    av_freep(&ref->video);
    av_freep(&ref->audio);
    av_dict_free(&ref->metadata);
    av_free(ref);
}

void avfilter_unref_bufferp(AVFilterBufferRef **ref)
{
FF_DISABLE_DEPRECATION_WARNINGS
    avfilter_unref_buffer(*ref);
FF_ENABLE_DEPRECATION_WARNINGS
    *ref = NULL;
}

int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
{
    dst->pts    = src->pts;
    dst->pos    = av_frame_get_pkt_pos(src);
    dst->format = src->format;

    av_dict_free(&dst->metadata);
    av_dict_copy(&dst->metadata, av_frame_get_metadata(src), 0);

    switch (dst->type) {
    case AVMEDIA_TYPE_VIDEO:
        dst->video->w                   = src->width;
        dst->video->h                   = src->height;
        dst->video->sample_aspect_ratio = src->sample_aspect_ratio;
        dst->video->interlaced          = src->interlaced_frame;
        dst->video->top_field_first     = src->top_field_first;
        dst->video->key_frame           = src->key_frame;
        dst->video->pict_type           = src->pict_type;
        break;
    case AVMEDIA_TYPE_AUDIO:
        dst->audio->sample_rate         = src->sample_rate;
        dst->audio->channel_layout      = src->channel_layout;
        break;
    default:
        return AVERROR(EINVAL);
    }

    return 0;
}

void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, const AVFilterBufferRef *src)
{
    // copy common properties
    dst->pts             = src->pts;
    dst->pos             = src->pos;

    switch (src->type) {
    case AVMEDIA_TYPE_VIDEO: {
        if (dst->video->qp_table)
            av_freep(&dst->video->qp_table);
        copy_video_props(dst->video, src->video);
        break;
    }
    case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break;
    default: break;
    }

    av_dict_free(&dst->metadata);
    av_dict_copy(&dst->metadata, src->metadata, 0);
}
#endif /* FF_API_AVFILTERBUFFER */
OpenPOWER on IntegriCloud