lavfi/avcodec: check avfilter_copy_frame_props() return code
[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     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         break;
64     default:
65         return AVERROR(EINVAL);
66     }
67
68     return 0;
69 }
70
71 AVFilterBufferRef *avfilter_get_video_buffer_ref_from_frame(const AVFrame *frame,
72                                                             int perms)
73 {
74     AVFilterBufferRef *picref =
75         avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize, perms,
76                                                   frame->width, frame->height,
77                                                   frame->format);
78     if (!picref)
79         return NULL;
80     if (avfilter_copy_frame_props(picref, frame) < 0) {
81         picref->buf->data[0] = NULL;
82         avfilter_unref_bufferp(&picref);
83     }
84     return picref;
85 }
86
87 AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame,
88                                                             int perms)
89 {
90     AVFilterBufferRef *samplesref =
91         avfilter_get_audio_buffer_ref_from_arrays((uint8_t **)frame->data, frame->linesize[0], perms,
92                                                   frame->nb_samples, frame->format,
93                                                   av_frame_get_channel_layout(frame));
94     if (!samplesref)
95         return NULL;
96     if (avfilter_copy_frame_props(samplesref, frame) < 0) {
97         samplesref->buf->data[0] = NULL;
98         avfilter_unref_bufferp(&samplesref);
99     }
100     return samplesref;
101 }
102
103 AVFilterBufferRef *avfilter_get_buffer_ref_from_frame(enum AVMediaType type,
104                                                       const AVFrame *frame,
105                                                       int perms)
106 {
107     switch (type) {
108     case AVMEDIA_TYPE_VIDEO:
109         return avfilter_get_video_buffer_ref_from_frame(frame, perms);
110     case AVMEDIA_TYPE_AUDIO:
111         return avfilter_get_audio_buffer_ref_from_frame(frame, perms);
112     default:
113         return NULL;
114     }
115 }
116
117 int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src)
118 {
119     int planes, nb_channels;
120
121     if (!dst)
122         return AVERROR(EINVAL);
123     /* abort in case the src is NULL and dst is not, avoid inconsistent state in dst */
124     av_assert0(src);
125
126     memcpy(dst->data, src->data, sizeof(dst->data));
127     memcpy(dst->linesize, src->linesize, sizeof(dst->linesize));
128
129     dst->pts     = src->pts;
130     dst->format  = src->format;
131     av_frame_set_pkt_pos(dst, src->pos);
132
133     switch (src->type) {
134     case AVMEDIA_TYPE_VIDEO:
135         av_assert0(src->video);
136         dst->width               = src->video->w;
137         dst->height              = src->video->h;
138         dst->sample_aspect_ratio = src->video->sample_aspect_ratio;
139         dst->interlaced_frame    = src->video->interlaced;
140         dst->top_field_first     = src->video->top_field_first;
141         dst->key_frame           = src->video->key_frame;
142         dst->pict_type           = src->video->pict_type;
143         break;
144     case AVMEDIA_TYPE_AUDIO:
145         av_assert0(src->audio);
146         nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout);
147         planes      = av_sample_fmt_is_planar(src->format) ? nb_channels : 1;
148
149         if (planes > FF_ARRAY_ELEMS(dst->data)) {
150             dst->extended_data = av_mallocz(planes * sizeof(*dst->extended_data));
151             if (!dst->extended_data)
152                 return AVERROR(ENOMEM);
153             memcpy(dst->extended_data, src->extended_data,
154                    planes * sizeof(*dst->extended_data));
155         } else
156             dst->extended_data = dst->data;
157         dst->nb_samples          = src->audio->nb_samples;
158         av_frame_set_sample_rate   (dst, src->audio->sample_rate);
159         av_frame_set_channel_layout(dst, src->audio->channel_layout);
160         break;
161     default:
162         return AVERROR(EINVAL);
163     }
164
165     return 0;
166 }
167
168 #ifdef FF_API_FILL_FRAME
169 int avfilter_fill_frame_from_audio_buffer_ref(AVFrame *frame,
170                                               const AVFilterBufferRef *samplesref)
171 {
172     return avfilter_copy_buf_props(frame, samplesref);
173 }
174
175 int avfilter_fill_frame_from_video_buffer_ref(AVFrame *frame,
176                                               const AVFilterBufferRef *picref)
177 {
178     return avfilter_copy_buf_props(frame, picref);
179 }
180
181 int avfilter_fill_frame_from_buffer_ref(AVFrame *frame,
182                                         const AVFilterBufferRef *ref)
183 {
184     return avfilter_copy_buf_props(frame, ref);
185 }
186 #endif