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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/channel_layout.h" | |
29 | #include "libavutil/opt.h" | |
30 | ||
31 | #if FF_API_AVFILTERBUFFER | |
32 | AVFilterBufferRef *avfilter_get_video_buffer_ref_from_frame(const AVFrame *frame, | |
33 | int perms) | |
34 | { | |
35 | AVFilterBufferRef *picref = | |
36 | avfilter_get_video_buffer_ref_from_arrays(frame->data, frame->linesize, perms, | |
37 | frame->width, frame->height, | |
38 | frame->format); | |
39 | if (!picref) | |
40 | return NULL; | |
41 | if (avfilter_copy_frame_props(picref, frame) < 0) { | |
42 | picref->buf->data[0] = NULL; | |
43 | avfilter_unref_bufferp(&picref); | |
44 | } | |
45 | return picref; | |
46 | } | |
47 | ||
48 | AVFilterBufferRef *avfilter_get_audio_buffer_ref_from_frame(const AVFrame *frame, | |
49 | int perms) | |
50 | { | |
51 | AVFilterBufferRef *samplesref; | |
52 | int channels = av_frame_get_channels(frame); | |
53 | int64_t layout = av_frame_get_channel_layout(frame); | |
54 | ||
55 | if (layout && av_get_channel_layout_nb_channels(layout) != av_frame_get_channels(frame)) { | |
56 | av_log(0, AV_LOG_ERROR, "Layout indicates a different number of channels than actually present\n"); | |
57 | return NULL; | |
58 | } | |
59 | ||
60 | samplesref = avfilter_get_audio_buffer_ref_from_arrays_channels( | |
61 | (uint8_t **)frame->extended_data, frame->linesize[0], perms, | |
62 | frame->nb_samples, frame->format, channels, layout); | |
63 | if (!samplesref) | |
64 | return NULL; | |
65 | if (avfilter_copy_frame_props(samplesref, frame) < 0) { | |
66 | samplesref->buf->data[0] = NULL; | |
67 | avfilter_unref_bufferp(&samplesref); | |
68 | } | |
69 | return samplesref; | |
70 | } | |
71 | ||
72 | AVFilterBufferRef *avfilter_get_buffer_ref_from_frame(enum AVMediaType type, | |
73 | const AVFrame *frame, | |
74 | int perms) | |
75 | { | |
76 | switch (type) { | |
77 | case AVMEDIA_TYPE_VIDEO: | |
78 | return avfilter_get_video_buffer_ref_from_frame(frame, perms); | |
79 | case AVMEDIA_TYPE_AUDIO: | |
80 | return avfilter_get_audio_buffer_ref_from_frame(frame, perms); | |
81 | default: | |
82 | return NULL; | |
83 | } | |
84 | } | |
85 | ||
86 | int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src) | |
87 | { | |
88 | int planes, nb_channels; | |
89 | ||
90 | if (!dst) | |
91 | return AVERROR(EINVAL); | |
92 | /* abort in case the src is NULL and dst is not, avoid inconsistent state in dst */ | |
93 | av_assert0(src); | |
94 | ||
95 | memcpy(dst->data, src->data, sizeof(dst->data)); | |
96 | memcpy(dst->linesize, src->linesize, sizeof(dst->linesize)); | |
97 | ||
98 | dst->pts = src->pts; | |
99 | dst->format = src->format; | |
100 | av_frame_set_pkt_pos(dst, src->pos); | |
101 | ||
102 | switch (src->type) { | |
103 | case AVMEDIA_TYPE_VIDEO: | |
104 | av_assert0(src->video); | |
105 | dst->width = src->video->w; | |
106 | dst->height = src->video->h; | |
107 | dst->sample_aspect_ratio = src->video->sample_aspect_ratio; | |
108 | dst->interlaced_frame = src->video->interlaced; | |
109 | dst->top_field_first = src->video->top_field_first; | |
110 | dst->key_frame = src->video->key_frame; | |
111 | dst->pict_type = src->video->pict_type; | |
112 | break; | |
113 | case AVMEDIA_TYPE_AUDIO: | |
114 | av_assert0(src->audio); | |
115 | nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout); | |
116 | planes = av_sample_fmt_is_planar(src->format) ? nb_channels : 1; | |
117 | ||
118 | if (planes > FF_ARRAY_ELEMS(dst->data)) { | |
119 | dst->extended_data = av_mallocz_array(planes, sizeof(*dst->extended_data)); | |
120 | if (!dst->extended_data) | |
121 | return AVERROR(ENOMEM); | |
122 | memcpy(dst->extended_data, src->extended_data, | |
123 | planes * sizeof(*dst->extended_data)); | |
124 | } else | |
125 | dst->extended_data = dst->data; | |
126 | dst->nb_samples = src->audio->nb_samples; | |
127 | av_frame_set_sample_rate (dst, src->audio->sample_rate); | |
128 | av_frame_set_channel_layout(dst, src->audio->channel_layout); | |
129 | av_frame_set_channels (dst, src->audio->channels); | |
130 | break; | |
131 | default: | |
132 | return AVERROR(EINVAL); | |
133 | } | |
134 | ||
135 | return 0; | |
136 | } | |
137 | #endif |