lavfi/avcodec: rename picref->samplesref variable in avfilter_get_audio_buffer_ref_fr...
[ffmpeg.git] / libavfilter / avcodec.c
1 /*
2  * Copyright 2011 Stefano Sabatini | stefasab at gmail.com
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * libavcodec/libavfilter gluing utilities
24  */
25
26 #include "avcodec.h"
27 #include "libavutil/avassert.h"
28 #include "libavutil/opt.h"
29
30 int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
31 {
32     dst->pts    = src->pts;
33     dst->pos    = av_frame_get_pkt_pos(src);
34     dst->format = src->format;
35
36     switch (dst->type) {
37     case AVMEDIA_TYPE_VIDEO:
38         dst->video->w                   = src->width;
39         dst->video->h                   = src->height;
40         dst->video->sample_aspect_ratio = src->sample_aspect_ratio;
41         dst->video->interlaced          = src->interlaced_frame;
42         dst->video->top_field_first     = src->top_field_first;
43         dst->video->key_frame           = src->key_frame;
44         dst->video->pict_type           = src->pict_type;
45         break;
46     case AVMEDIA_TYPE_AUDIO:
47         dst->audio->sample_rate         = src->sample_rate;
48         dst->audio->channel_layout      = src->channel_layout;
49         break;
50     default:
51         return AVERROR(EINVAL);
52     }
53
54     return 0;
55 }
56
57 AVFilterBufferRef *avfilter_get_video_buffer_ref_from_frame(const AVFrame *frame,
58                                                             int perms)
59 {
60     AVFilterBufferRef *picref =
61         avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize, perms,
62                                                   frame->width, frame->height,
63                                                   frame->format);
64     if (!picref)
65         return NULL;
66     avfilter_copy_frame_props(picref, frame);
67     return picref;
68 }
69
70 AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame,
71                                                             int perms)
72 {
73     AVFilterBufferRef *samplesref =
74         avfilter_get_audio_buffer_ref_from_arrays((uint8_t **)frame->data, frame->linesize[0], perms,
75                                                   frame->nb_samples, frame->format,
76                                                   av_frame_get_channel_layout(frame));
77     if (!samplesref)
78         return NULL;
79     avfilter_copy_frame_props(samplesref, frame);
80     return samplesref;
81 }
82
83 AVFilterBufferRef *avfilter_get_buffer_ref_from_frame(enum AVMediaType type,
84                                                       const AVFrame *frame,
85                                                       int perms)
86 {
87     switch (type) {
88     case AVMEDIA_TYPE_VIDEO:
89         return avfilter_get_video_buffer_ref_from_frame(frame, perms);
90     case AVMEDIA_TYPE_AUDIO:
91         return avfilter_get_audio_buffer_ref_from_frame(frame, perms);
92     default:
93         return NULL;
94     }
95 }
96
97 int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src)
98 {
99     int planes, nb_channels;
100
101     if (!dst)
102         return AVERROR(EINVAL);
103     /* abort in case the src is NULL and dst is not, avoid inconsistent state in dst */
104     av_assert0(src);
105
106     memcpy(dst->data, src->data, sizeof(dst->data));
107     memcpy(dst->linesize, src->linesize, sizeof(dst->linesize));
108
109     dst->pts     = src->pts;
110     dst->format  = src->format;
111     av_frame_set_pkt_pos(dst, src->pos);
112
113     switch (src->type) {
114     case AVMEDIA_TYPE_VIDEO:
115         av_assert0(src->video);
116         dst->width               = src->video->w;
117         dst->height              = src->video->h;
118         dst->sample_aspect_ratio = src->video->sample_aspect_ratio;
119         dst->interlaced_frame    = src->video->interlaced;
120         dst->top_field_first     = src->video->top_field_first;
121         dst->key_frame           = src->video->key_frame;
122         dst->pict_type           = src->video->pict_type;
123         break;
124     case AVMEDIA_TYPE_AUDIO:
125         av_assert0(src->audio);
126         nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout);
127         planes      = av_sample_fmt_is_planar(src->format) ? nb_channels : 1;
128
129         if (planes > FF_ARRAY_ELEMS(dst->data)) {
130             dst->extended_data = av_mallocz(planes * sizeof(*dst->extended_data));
131             if (!dst->extended_data)
132                 return AVERROR(ENOMEM);
133             memcpy(dst->extended_data, src->extended_data,
134                    planes * sizeof(dst->extended_data));
135         } else
136             dst->extended_data = dst->data;
137         dst->nb_samples          = src->audio->nb_samples;
138         av_frame_set_sample_rate   (dst, src->audio->sample_rate);
139         av_frame_set_channel_layout(dst, src->audio->channel_layout);
140         break;
141     default:
142         return AVERROR(EINVAL);
143     }
144
145     return 0;
146 }
147
148 #ifdef FF_API_FILL_FRAME
149 int avfilter_fill_frame_from_audio_buffer_ref(AVFrame *frame,
150                                               const AVFilterBufferRef *samplesref)
151 {
152     return avfilter_copy_buf_props(frame, samplesref);
153 }
154
155 int avfilter_fill_frame_from_video_buffer_ref(AVFrame *frame,
156                                               const AVFilterBufferRef *picref)
157 {
158     return avfilter_copy_buf_props(frame, picref);
159 }
160
161 int avfilter_fill_frame_from_buffer_ref(AVFrame *frame,
162                                         const AVFilterBufferRef *ref)
163 {
164     return avfilter_copy_buf_props(frame, ref);
165 }
166 #endif