]> git.sesse.net Git - ffmpeg/blob - libavfilter/avcodec.c
Merge commit 'b9ba5253dd1232be4b48cfe61c31ff4b3de3d10a'
[ffmpeg] / 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     av_dict_free(&dst->metadata);
37     av_dict_copy(&dst->metadata, av_frame_get_metadata(src), 0);
38
39     switch (dst->type) {
40     case AVMEDIA_TYPE_VIDEO:
41         dst->video->w                   = src->width;
42         dst->video->h                   = src->height;
43         dst->video->sample_aspect_ratio = src->sample_aspect_ratio;
44         dst->video->interlaced          = src->interlaced_frame;
45         dst->video->top_field_first     = src->top_field_first;
46         dst->video->key_frame           = src->key_frame;
47         dst->video->pict_type           = src->pict_type;
48         av_freep(&dst->video->qp_table);
49         dst->video->qp_table_linesize = 0;
50         if (src->qscale_table) {
51             int qsize = src->qstride ? src->qstride * ((src->height+15)/16) : (src->width+15)/16;
52             dst->video->qp_table = av_malloc(qsize);
53             if (!dst->video->qp_table)
54                 return AVERROR(ENOMEM);
55             dst->video->qp_table_linesize = src->qstride;
56             dst->video->qp_table_size     = qsize;
57             memcpy(dst->video->qp_table, src->qscale_table, qsize);
58         }
59         break;
60     case AVMEDIA_TYPE_AUDIO:
61         dst->audio->sample_rate         = src->sample_rate;
62         dst->audio->channel_layout      = src->channel_layout;
63         dst->audio->channels            = src->channels;
64         if(src->channels < av_get_channel_layout_nb_channels(src->channel_layout)) {
65             av_log(NULL, AV_LOG_ERROR, "libavfilter does not support this channel layout\n");
66             return AVERROR(EINVAL);
67         }
68         break;
69     default:
70         return AVERROR(EINVAL);
71     }
72
73     return 0;
74 }
75
76 AVFilterBufferRef *avfilter_get_video_buffer_ref_from_frame(const AVFrame *frame,
77                                                             int perms)
78 {
79     AVFilterBufferRef *picref =
80         avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize, perms,
81                                                   frame->width, frame->height,
82                                                   frame->format);
83     if (!picref)
84         return NULL;
85     if (avfilter_copy_frame_props(picref, frame) < 0) {
86         picref->buf->data[0] = NULL;
87         avfilter_unref_bufferp(&picref);
88     }
89     return picref;
90 }
91
92 AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame,
93                                                             int perms)
94 {
95     AVFilterBufferRef *samplesref;
96     int channels = av_frame_get_channels(frame);
97     int64_t layout = av_frame_get_channel_layout(frame);
98
99     if (layout && av_get_channel_layout_nb_channels(layout) != av_frame_get_channels(frame)) {
100         av_log(0, AV_LOG_ERROR, "Layout indicates a different number of channels than actually present\n");
101         return NULL;
102     }
103
104     samplesref = avfilter_get_audio_buffer_ref_from_arrays_channels(
105         (uint8_t **)frame->extended_data, frame->linesize[0], perms,
106         frame->nb_samples, frame->format, channels, layout);
107     if (!samplesref)
108         return NULL;
109     if (avfilter_copy_frame_props(samplesref, frame) < 0) {
110         samplesref->buf->data[0] = NULL;
111         avfilter_unref_bufferp(&samplesref);
112     }
113     return samplesref;
114 }
115
116 AVFilterBufferRef *avfilter_get_buffer_ref_from_frame(enum AVMediaType type,
117                                                       const AVFrame *frame,
118                                                       int perms)
119 {
120     switch (type) {
121     case AVMEDIA_TYPE_VIDEO:
122         return avfilter_get_video_buffer_ref_from_frame(frame, perms);
123     case AVMEDIA_TYPE_AUDIO:
124         return avfilter_get_audio_buffer_ref_from_frame(frame, perms);
125     default:
126         return NULL;
127     }
128 }
129
130 int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src)
131 {
132     int planes, nb_channels;
133
134     if (!dst)
135         return AVERROR(EINVAL);
136     /* abort in case the src is NULL and dst is not, avoid inconsistent state in dst */
137     av_assert0(src);
138
139     memcpy(dst->data, src->data, sizeof(dst->data));
140     memcpy(dst->linesize, src->linesize, sizeof(dst->linesize));
141
142     dst->pts     = src->pts;
143     dst->format  = src->format;
144     av_frame_set_pkt_pos(dst, src->pos);
145
146     switch (src->type) {
147     case AVMEDIA_TYPE_VIDEO:
148         av_assert0(src->video);
149         dst->width               = src->video->w;
150         dst->height              = src->video->h;
151         dst->sample_aspect_ratio = src->video->sample_aspect_ratio;
152         dst->interlaced_frame    = src->video->interlaced;
153         dst->top_field_first     = src->video->top_field_first;
154         dst->key_frame           = src->video->key_frame;
155         dst->pict_type           = src->video->pict_type;
156         break;
157     case AVMEDIA_TYPE_AUDIO:
158         av_assert0(src->audio);
159         nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout);
160         planes      = av_sample_fmt_is_planar(src->format) ? nb_channels : 1;
161
162         if (planes > FF_ARRAY_ELEMS(dst->data)) {
163             dst->extended_data = av_mallocz(planes * sizeof(*dst->extended_data));
164             if (!dst->extended_data)
165                 return AVERROR(ENOMEM);
166             memcpy(dst->extended_data, src->extended_data,
167                    planes * sizeof(*dst->extended_data));
168         } else
169             dst->extended_data = dst->data;
170         dst->nb_samples          = src->audio->nb_samples;
171         av_frame_set_sample_rate   (dst, src->audio->sample_rate);
172         av_frame_set_channel_layout(dst, src->audio->channel_layout);
173         av_frame_set_channels      (dst, src->audio->channels);
174         break;
175     default:
176         return AVERROR(EINVAL);
177     }
178
179     return 0;
180 }
181
182 #ifdef FF_API_FILL_FRAME
183 int avfilter_fill_frame_from_audio_buffer_ref(AVFrame *frame,
184                                               const AVFilterBufferRef *samplesref)
185 {
186     return avfilter_copy_buf_props(frame, samplesref);
187 }
188
189 int avfilter_fill_frame_from_video_buffer_ref(AVFrame *frame,
190                                               const AVFilterBufferRef *picref)
191 {
192     return avfilter_copy_buf_props(frame, picref);
193 }
194
195 int avfilter_fill_frame_from_buffer_ref(AVFrame *frame,
196                                         const AVFilterBufferRef *ref)
197 {
198     return avfilter_copy_buf_props(frame, ref);
199 }
200 #endif