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/* |
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* Copyright (c) 2011 Stefano Sabatini |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* libavfilter virtual input device |
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*/ |
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/* #define DEBUG */ |
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#include <float.h> /* DBL_MIN, DBL_MAX */ |
29 |
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30 |
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#include "libavutil/bprint.h" |
31 |
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#include "libavutil/channel_layout.h" |
32 |
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#include "libavutil/file.h" |
33 |
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#include "libavutil/imgutils.h" |
34 |
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#include "libavutil/internal.h" |
35 |
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#include "libavutil/log.h" |
36 |
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#include "libavutil/mem.h" |
37 |
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#include "libavutil/opt.h" |
38 |
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#include "libavutil/parseutils.h" |
39 |
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#include "libavutil/pixdesc.h" |
40 |
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#include "libavfilter/avfilter.h" |
41 |
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#include "libavfilter/buffersink.h" |
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#include "libavformat/avio_internal.h" |
43 |
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#include "libavformat/internal.h" |
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#include "avdevice.h" |
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typedef struct { |
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AVClass *class; ///< class for private options |
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char *graph_str; |
49 |
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char *graph_filename; |
50 |
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char *dump_graph; |
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AVFilterGraph *graph; |
52 |
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AVFilterContext **sinks; |
53 |
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int *sink_stream_map; |
54 |
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int *sink_eof; |
55 |
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int *stream_sink_map; |
56 |
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int *sink_stream_subcc_map; |
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AVFrame *decoded_frame; |
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int nb_sinks; |
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AVPacket subcc_packet; |
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} LavfiContext; |
61 |
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static int *create_all_formats(int n) |
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{ |
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int i, j, *fmts, count = 0; |
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✓✓ |
6169 |
for (i = 0; i < n; i++) { |
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|
6138 |
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i); |
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✓✓ |
6138 |
if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) |
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5642 |
count++; |
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} |
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✗✓ |
31 |
if (!(fmts = av_malloc_array(count + 1, sizeof(*fmts)))) |
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return NULL; |
74 |
✓✓ |
6169 |
for (j = 0, i = 0; i < n; i++) { |
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|
6138 |
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i); |
76 |
✓✓ |
6138 |
if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) |
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5642 |
fmts[j++] = i; |
78 |
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} |
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fmts[j] = -1; |
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31 |
return fmts; |
81 |
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} |
82 |
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83 |
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av_cold static int lavfi_read_close(AVFormatContext *avctx) |
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{ |
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LavfiContext *lavfi = avctx->priv_data; |
86 |
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87 |
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av_freep(&lavfi->sink_stream_map); |
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av_freep(&lavfi->sink_eof); |
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av_freep(&lavfi->stream_sink_map); |
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av_freep(&lavfi->sink_stream_subcc_map); |
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av_freep(&lavfi->sinks); |
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avfilter_graph_free(&lavfi->graph); |
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31 |
av_frame_free(&lavfi->decoded_frame); |
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95 |
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31 |
return 0; |
96 |
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} |
97 |
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98 |
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31 |
static int create_subcc_streams(AVFormatContext *avctx) |
99 |
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{ |
100 |
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31 |
LavfiContext *lavfi = avctx->priv_data; |
101 |
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AVStream *st; |
102 |
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int stream_idx, sink_idx; |
103 |
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104 |
✓✓ |
64 |
for (stream_idx = 0; stream_idx < lavfi->nb_sinks; stream_idx++) { |
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33 |
sink_idx = lavfi->stream_sink_map[stream_idx]; |
106 |
✓✓ |
33 |
if (lavfi->sink_stream_subcc_map[sink_idx]) { |
107 |
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3 |
lavfi->sink_stream_subcc_map[sink_idx] = avctx->nb_streams; |
108 |
✗✓ |
3 |
if (!(st = avformat_new_stream(avctx, NULL))) |
109 |
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return AVERROR(ENOMEM); |
110 |
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3 |
st->codecpar->codec_id = AV_CODEC_ID_EIA_608; |
111 |
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3 |
st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE; |
112 |
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} else { |
113 |
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30 |
lavfi->sink_stream_subcc_map[sink_idx] = -1; |
114 |
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} |
115 |
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} |
116 |
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31 |
return 0; |
117 |
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} |
118 |
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119 |
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31 |
av_cold static int lavfi_read_header(AVFormatContext *avctx) |
120 |
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{ |
121 |
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31 |
LavfiContext *lavfi = avctx->priv_data; |
122 |
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31 |
AVFilterInOut *input_links = NULL, *output_links = NULL, *inout; |
123 |
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const AVFilter *buffersink, *abuffersink; |
124 |
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31 |
int *pix_fmts = create_all_formats(AV_PIX_FMT_NB); |
125 |
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enum AVMediaType type; |
126 |
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31 |
int ret = 0, i, n; |
127 |
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128 |
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#define FAIL(ERR) { ret = ERR; goto end; } |
129 |
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130 |
✗✓ |
31 |
if (!pix_fmts) |
131 |
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FAIL(AVERROR(ENOMEM)); |
132 |
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133 |
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31 |
buffersink = avfilter_get_by_name("buffersink"); |
134 |
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abuffersink = avfilter_get_by_name("abuffersink"); |
135 |
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|
136 |
✓✓✗✓
|
31 |
if (lavfi->graph_filename && lavfi->graph_str) { |
137 |
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av_log(avctx, AV_LOG_ERROR, |
138 |
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"Only one of the graph or graph_file options must be specified\n"); |
139 |
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FAIL(AVERROR(EINVAL)); |
140 |
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} |
141 |
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|
142 |
✓✓ |
31 |
if (lavfi->graph_filename) { |
143 |
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AVBPrint graph_file_pb; |
144 |
|
1 |
AVIOContext *avio = NULL; |
145 |
|
1 |
AVDictionary *options = NULL; |
146 |
✗✓✗✗
|
1 |
if (avctx->protocol_whitelist && (ret = av_dict_set(&options, "protocol_whitelist", avctx->protocol_whitelist, 0)) < 0) |
147 |
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goto end; |
148 |
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1 |
ret = avio_open2(&avio, lavfi->graph_filename, AVIO_FLAG_READ, &avctx->interrupt_callback, &options); |
149 |
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1 |
av_dict_set(&options, "protocol_whitelist", NULL, 0); |
150 |
✗✓ |
1 |
if (ret < 0) |
151 |
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goto end; |
152 |
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1 |
av_bprint_init(&graph_file_pb, 0, AV_BPRINT_SIZE_UNLIMITED); |
153 |
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1 |
ret = avio_read_to_bprint(avio, &graph_file_pb, INT_MAX); |
154 |
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1 |
avio_closep(&avio); |
155 |
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1 |
av_bprint_chars(&graph_file_pb, '\0', 1); |
156 |
✓✗✗✓
|
1 |
if (!ret && !av_bprint_is_complete(&graph_file_pb)) |
157 |
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ret = AVERROR(ENOMEM); |
158 |
✗✓ |
1 |
if (ret) { |
159 |
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av_bprint_finalize(&graph_file_pb, NULL); |
160 |
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goto end; |
161 |
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} |
162 |
✗✓ |
1 |
if ((ret = av_bprint_finalize(&graph_file_pb, &lavfi->graph_str))) |
163 |
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goto end; |
164 |
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} |
165 |
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|
166 |
✓✓ |
31 |
if (!lavfi->graph_str) |
167 |
|
30 |
lavfi->graph_str = av_strdup(avctx->url); |
168 |
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|
169 |
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/* parse the graph, create a stream for each open output */ |
170 |
✗✓ |
31 |
if (!(lavfi->graph = avfilter_graph_alloc())) |
171 |
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FAIL(AVERROR(ENOMEM)); |
172 |
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|
173 |
✗✓ |
31 |
if ((ret = avfilter_graph_parse_ptr(lavfi->graph, lavfi->graph_str, |
174 |
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&input_links, &output_links, avctx)) < 0) |
175 |
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goto end; |
176 |
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177 |
✗✓ |
31 |
if (input_links) { |
178 |
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av_log(avctx, AV_LOG_ERROR, |
179 |
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"Open inputs in the filtergraph are not acceptable\n"); |
180 |
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FAIL(AVERROR(EINVAL)); |
181 |
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} |
182 |
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|
183 |
|
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/* count the outputs */ |
184 |
✓✓ |
64 |
for (n = 0, inout = output_links; inout; n++, inout = inout->next); |
185 |
|
31 |
lavfi->nb_sinks = n; |
186 |
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|
187 |
✗✓ |
31 |
if (!(lavfi->sink_stream_map = av_malloc(sizeof(int) * n))) |
188 |
|
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FAIL(AVERROR(ENOMEM)); |
189 |
✗✓ |
31 |
if (!(lavfi->sink_eof = av_mallocz(sizeof(int) * n))) |
190 |
|
|
FAIL(AVERROR(ENOMEM)); |
191 |
✗✓ |
31 |
if (!(lavfi->stream_sink_map = av_malloc(sizeof(int) * n))) |
192 |
|
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FAIL(AVERROR(ENOMEM)); |
193 |
✗✓ |
31 |
if (!(lavfi->sink_stream_subcc_map = av_malloc(sizeof(int) * n))) |
194 |
|
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FAIL(AVERROR(ENOMEM)); |
195 |
|
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|
196 |
✓✓ |
64 |
for (i = 0; i < n; i++) |
197 |
|
33 |
lavfi->stream_sink_map[i] = -1; |
198 |
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|
199 |
|
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/* parse the output link names - they need to be of the form out0, out1, ... |
200 |
|
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* create a mapping between them and the streams */ |
201 |
✓✓ |
64 |
for (i = 0, inout = output_links; inout; i++, inout = inout->next) { |
202 |
|
33 |
int stream_idx = 0, suffix = 0, use_subcc = 0; |
203 |
|
33 |
sscanf(inout->name, "out%n%d%n", &suffix, &stream_idx, &suffix); |
204 |
✗✓ |
33 |
if (!suffix) { |
205 |
|
|
av_log(avctx, AV_LOG_ERROR, |
206 |
|
|
"Invalid outpad name '%s'\n", inout->name); |
207 |
|
|
FAIL(AVERROR(EINVAL)); |
208 |
|
|
} |
209 |
✓✓ |
33 |
if (inout->name[suffix]) { |
210 |
✓✗ |
3 |
if (!strcmp(inout->name + suffix, "+subcc")) { |
211 |
|
3 |
use_subcc = 1; |
212 |
|
|
} else { |
213 |
|
|
av_log(avctx, AV_LOG_ERROR, |
214 |
|
|
"Invalid outpad suffix '%s'\n", inout->name); |
215 |
|
|
FAIL(AVERROR(EINVAL)); |
216 |
|
|
} |
217 |
|
|
} |
218 |
|
|
|
219 |
✗✓ |
33 |
if ((unsigned)stream_idx >= n) { |
220 |
|
|
av_log(avctx, AV_LOG_ERROR, |
221 |
|
|
"Invalid index was specified in output '%s', " |
222 |
|
|
"must be a non-negative value < %d\n", |
223 |
|
|
inout->name, n); |
224 |
|
|
FAIL(AVERROR(EINVAL)); |
225 |
|
|
} |
226 |
|
|
|
227 |
✗✓ |
33 |
if (lavfi->stream_sink_map[stream_idx] != -1) { |
228 |
|
|
av_log(avctx, AV_LOG_ERROR, |
229 |
|
|
"An output with stream index %d was already specified\n", |
230 |
|
|
stream_idx); |
231 |
|
|
FAIL(AVERROR(EINVAL)); |
232 |
|
|
} |
233 |
|
33 |
lavfi->sink_stream_map[i] = stream_idx; |
234 |
|
33 |
lavfi->stream_sink_map[stream_idx] = i; |
235 |
|
33 |
lavfi->sink_stream_subcc_map[i] = !!use_subcc; |
236 |
|
|
} |
237 |
|
|
|
238 |
|
|
/* for each open output create a corresponding stream */ |
239 |
✓✓ |
64 |
for (i = 0, inout = output_links; inout; i++, inout = inout->next) { |
240 |
|
|
AVStream *st; |
241 |
✗✓ |
33 |
if (!(st = avformat_new_stream(avctx, NULL))) |
242 |
|
|
FAIL(AVERROR(ENOMEM)); |
243 |
|
33 |
st->id = i; |
244 |
|
|
} |
245 |
|
|
|
246 |
|
|
/* create a sink for each output and connect them to the graph */ |
247 |
|
31 |
lavfi->sinks = av_malloc_array(lavfi->nb_sinks, sizeof(AVFilterContext *)); |
248 |
✗✓ |
31 |
if (!lavfi->sinks) |
249 |
|
|
FAIL(AVERROR(ENOMEM)); |
250 |
|
|
|
251 |
✓✓ |
64 |
for (i = 0, inout = output_links; inout; i++, inout = inout->next) { |
252 |
|
|
AVFilterContext *sink; |
253 |
|
|
|
254 |
|
33 |
type = avfilter_pad_get_type(inout->filter_ctx->output_pads, inout->pad_idx); |
255 |
|
|
|
256 |
✓✓✓✗ ✓✓ |
33 |
if (type == AVMEDIA_TYPE_VIDEO && ! buffersink || |
257 |
✗✓ |
16 |
type == AVMEDIA_TYPE_AUDIO && ! abuffersink) { |
258 |
|
|
av_log(avctx, AV_LOG_ERROR, "Missing required buffersink filter, aborting.\n"); |
259 |
|
|
FAIL(AVERROR_FILTER_NOT_FOUND); |
260 |
|
|
} |
261 |
|
|
|
262 |
✓✓ |
33 |
if (type == AVMEDIA_TYPE_VIDEO) { |
263 |
|
17 |
ret = avfilter_graph_create_filter(&sink, buffersink, |
264 |
|
17 |
inout->name, NULL, |
265 |
|
|
NULL, lavfi->graph); |
266 |
✓✗ |
17 |
if (ret >= 0) |
267 |
✓✗ |
17 |
ret = av_opt_set_int_list(sink, "pix_fmts", pix_fmts, AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN); |
268 |
✗✓ |
17 |
if (ret < 0) |
269 |
|
|
goto end; |
270 |
✓✗ |
16 |
} else if (type == AVMEDIA_TYPE_AUDIO) { |
271 |
|
16 |
enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_U8, |
272 |
|
|
AV_SAMPLE_FMT_S16, |
273 |
|
|
AV_SAMPLE_FMT_S32, |
274 |
|
|
AV_SAMPLE_FMT_FLT, |
275 |
|
|
AV_SAMPLE_FMT_DBL, -1 }; |
276 |
|
|
|
277 |
|
16 |
ret = avfilter_graph_create_filter(&sink, abuffersink, |
278 |
|
16 |
inout->name, NULL, |
279 |
|
|
NULL, lavfi->graph); |
280 |
✓✗ |
16 |
if (ret >= 0) |
281 |
✓✗ |
16 |
ret = av_opt_set_int_list(sink, "sample_fmts", sample_fmts, AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN); |
282 |
✗✓ |
16 |
if (ret < 0) |
283 |
|
|
goto end; |
284 |
|
16 |
ret = av_opt_set_int(sink, "all_channel_counts", 1, |
285 |
|
|
AV_OPT_SEARCH_CHILDREN); |
286 |
✗✓ |
16 |
if (ret < 0) |
287 |
|
|
goto end; |
288 |
|
|
} else { |
289 |
|
|
av_log(avctx, AV_LOG_ERROR, |
290 |
|
|
"Output '%s' is not a video or audio output, not yet supported\n", inout->name); |
291 |
|
|
FAIL(AVERROR(EINVAL)); |
292 |
|
|
} |
293 |
|
|
|
294 |
|
33 |
lavfi->sinks[i] = sink; |
295 |
✗✓ |
33 |
if ((ret = avfilter_link(inout->filter_ctx, inout->pad_idx, sink, 0)) < 0) |
296 |
|
|
goto end; |
297 |
|
|
} |
298 |
|
|
|
299 |
|
|
/* configure the graph */ |
300 |
✗✓ |
31 |
if ((ret = avfilter_graph_config(lavfi->graph, avctx)) < 0) |
301 |
|
|
goto end; |
302 |
|
|
|
303 |
✗✓ |
31 |
if (lavfi->dump_graph) { |
304 |
|
|
char *dump = avfilter_graph_dump(lavfi->graph, lavfi->dump_graph); |
305 |
|
|
if (dump != NULL) { |
306 |
|
|
fputs(dump, stderr); |
307 |
|
|
fflush(stderr); |
308 |
|
|
av_free(dump); |
309 |
|
|
} else { |
310 |
|
|
FAIL(AVERROR(ENOMEM)); |
311 |
|
|
} |
312 |
|
|
} |
313 |
|
|
|
314 |
|
|
/* fill each stream with the information in the corresponding sink */ |
315 |
✓✓ |
64 |
for (i = 0; i < lavfi->nb_sinks; i++) { |
316 |
|
33 |
AVFilterContext *sink = lavfi->sinks[lavfi->stream_sink_map[i]]; |
317 |
|
33 |
AVRational time_base = av_buffersink_get_time_base(sink); |
318 |
|
33 |
AVStream *st = avctx->streams[i]; |
319 |
|
33 |
st->codecpar->codec_type = av_buffersink_get_type(sink); |
320 |
|
33 |
avpriv_set_pts_info(st, 64, time_base.num, time_base.den); |
321 |
✓✓ |
33 |
if (av_buffersink_get_type(sink) == AVMEDIA_TYPE_VIDEO) { |
322 |
|
17 |
st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO; |
323 |
|
17 |
st->codecpar->format = av_buffersink_get_format(sink); |
324 |
|
17 |
st->codecpar->width = av_buffersink_get_w(sink); |
325 |
|
17 |
st->codecpar->height = av_buffersink_get_h(sink); |
326 |
|
17 |
st ->sample_aspect_ratio = |
327 |
|
17 |
st->codecpar->sample_aspect_ratio = av_buffersink_get_sample_aspect_ratio(sink); |
328 |
✓✓ |
17 |
avctx->probesize = FFMAX(avctx->probesize, |
329 |
|
|
av_buffersink_get_w(sink) * av_buffersink_get_h(sink) * |
330 |
|
|
av_get_padded_bits_per_pixel(av_pix_fmt_desc_get(av_buffersink_get_format(sink))) * |
331 |
|
|
30); |
332 |
✓✗ |
16 |
} else if (av_buffersink_get_type(sink) == AVMEDIA_TYPE_AUDIO) { |
333 |
|
16 |
st->codecpar->codec_id = av_get_pcm_codec(av_buffersink_get_format(sink), -1); |
334 |
|
16 |
st->codecpar->channels = av_buffersink_get_channels(sink); |
335 |
|
16 |
st->codecpar->format = av_buffersink_get_format(sink); |
336 |
|
16 |
st->codecpar->sample_rate = av_buffersink_get_sample_rate(sink); |
337 |
|
16 |
st->codecpar->channel_layout = av_buffersink_get_channel_layout(sink); |
338 |
✗✓ |
16 |
if (st->codecpar->codec_id == AV_CODEC_ID_NONE) |
339 |
|
|
av_log(avctx, AV_LOG_ERROR, |
340 |
|
|
"Could not find PCM codec for sample format %s.\n", |
341 |
|
|
av_get_sample_fmt_name(av_buffersink_get_format(sink))); |
342 |
|
|
} |
343 |
|
|
} |
344 |
|
|
|
345 |
✗✓ |
31 |
if ((ret = create_subcc_streams(avctx)) < 0) |
346 |
|
|
goto end; |
347 |
|
|
|
348 |
✓✗ |
31 |
if (!(lavfi->decoded_frame = av_frame_alloc())) |
349 |
|
|
FAIL(AVERROR(ENOMEM)); |
350 |
|
|
|
351 |
|
31 |
end: |
352 |
|
31 |
av_free(pix_fmts); |
353 |
|
31 |
avfilter_inout_free(&input_links); |
354 |
|
31 |
avfilter_inout_free(&output_links); |
355 |
✗✓ |
31 |
if (ret < 0) |
356 |
|
|
lavfi_read_close(avctx); |
357 |
|
31 |
return ret; |
358 |
|
|
} |
359 |
|
|
|
360 |
|
9832 |
static int create_subcc_packet(AVFormatContext *avctx, AVFrame *frame, |
361 |
|
|
int sink_idx) |
362 |
|
|
{ |
363 |
|
9832 |
LavfiContext *lavfi = avctx->priv_data; |
364 |
|
|
AVFrameSideData *sd; |
365 |
|
|
int stream_idx, ret; |
366 |
|
|
|
367 |
✓✓ |
9832 |
if ((stream_idx = lavfi->sink_stream_subcc_map[sink_idx]) < 0) |
368 |
|
9360 |
return 0; |
369 |
✗✓ |
472 |
if (!(sd = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC))) |
370 |
|
|
return 0; |
371 |
✗✓ |
472 |
if ((ret = av_new_packet(&lavfi->subcc_packet, sd->size)) < 0) |
372 |
|
|
return ret; |
373 |
|
472 |
memcpy(lavfi->subcc_packet.data, sd->data, sd->size); |
374 |
|
472 |
lavfi->subcc_packet.stream_index = stream_idx; |
375 |
|
472 |
lavfi->subcc_packet.pts = frame->pts; |
376 |
|
472 |
lavfi->subcc_packet.pos = frame->pkt_pos; |
377 |
|
472 |
return 0; |
378 |
|
|
} |
379 |
|
|
|
380 |
|
10339 |
static int lavfi_read_packet(AVFormatContext *avctx, AVPacket *pkt) |
381 |
|
|
{ |
382 |
|
10339 |
LavfiContext *lavfi = avctx->priv_data; |
383 |
|
10339 |
double min_pts = DBL_MAX; |
384 |
|
10339 |
int stream_idx, min_pts_sink_idx = 0; |
385 |
|
10339 |
AVFrame *frame = lavfi->decoded_frame; |
386 |
|
|
AVDictionary *frame_metadata; |
387 |
|
|
int ret, i; |
388 |
|
10339 |
int size = 0; |
389 |
|
|
AVStream *st; |
390 |
|
|
|
391 |
✓✓ |
10339 |
if (lavfi->subcc_packet.size) { |
392 |
|
472 |
av_packet_move_ref(pkt, &lavfi->subcc_packet); |
393 |
|
472 |
return pkt->size; |
394 |
|
|
} |
395 |
|
|
|
396 |
|
|
/* iterate through all the graph sinks. Select the sink with the |
397 |
|
|
* minimum PTS */ |
398 |
✓✓ |
19764 |
for (i = 0; i < lavfi->nb_sinks; i++) { |
399 |
|
9897 |
AVRational tb = av_buffersink_get_time_base(lavfi->sinks[i]); |
400 |
|
|
double d; |
401 |
|
|
int ret; |
402 |
|
|
|
403 |
✓✓ |
9897 |
if (lavfi->sink_eof[i]) |
404 |
|
40 |
continue; |
405 |
|
|
|
406 |
|
9889 |
ret = av_buffersink_get_frame_flags(lavfi->sinks[i], frame, |
407 |
|
|
AV_BUFFERSINK_FLAG_PEEK); |
408 |
✓✓ |
9889 |
if (ret == AVERROR_EOF) { |
409 |
|
|
ff_dlog(avctx, "EOF sink_idx:%d\n", i); |
410 |
|
32 |
lavfi->sink_eof[i] = 1; |
411 |
|
32 |
continue; |
412 |
✗✓ |
9857 |
} else if (ret < 0) |
413 |
|
|
return ret; |
414 |
|
9857 |
d = av_rescale_q_rnd(frame->pts, tb, AV_TIME_BASE_Q, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX); |
415 |
|
|
ff_dlog(avctx, "sink_idx:%d time:%f\n", i, d); |
416 |
|
9857 |
av_frame_unref(frame); |
417 |
|
|
|
418 |
✓✓ |
9857 |
if (d < min_pts) { |
419 |
|
9841 |
min_pts = d; |
420 |
|
9841 |
min_pts_sink_idx = i; |
421 |
|
|
} |
422 |
|
|
} |
423 |
✓✓ |
9867 |
if (min_pts == DBL_MAX) |
424 |
|
35 |
return AVERROR_EOF; |
425 |
|
|
|
426 |
|
|
ff_dlog(avctx, "min_pts_sink_idx:%i\n", min_pts_sink_idx); |
427 |
|
|
|
428 |
|
9832 |
av_buffersink_get_frame_flags(lavfi->sinks[min_pts_sink_idx], frame, 0); |
429 |
|
9832 |
stream_idx = lavfi->sink_stream_map[min_pts_sink_idx]; |
430 |
|
9832 |
st = avctx->streams[stream_idx]; |
431 |
|
|
|
432 |
✓✓ |
9832 |
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { |
433 |
|
1028 |
size = av_image_get_buffer_size(frame->format, frame->width, frame->height, 1); |
434 |
✗✓ |
1028 |
if ((ret = av_new_packet(pkt, size)) < 0) |
435 |
|
|
goto fail; |
436 |
|
|
|
437 |
|
1028 |
av_image_copy_to_buffer(pkt->data, size, (const uint8_t **)frame->data, frame->linesize, |
438 |
|
1028 |
frame->format, frame->width, frame->height, 1); |
439 |
✓✗ |
8804 |
} else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) { |
440 |
|
8804 |
size = frame->nb_samples * av_get_bytes_per_sample(frame->format) * |
441 |
|
8804 |
frame->channels; |
442 |
✗✓ |
8804 |
if ((ret = av_new_packet(pkt, size)) < 0) |
443 |
|
|
goto fail;; |
444 |
|
8804 |
memcpy(pkt->data, frame->data[0], size); |
445 |
|
|
} |
446 |
|
|
|
447 |
|
9832 |
frame_metadata = frame->metadata; |
448 |
✓✓ |
9832 |
if (frame_metadata) { |
449 |
|
|
int size; |
450 |
|
430 |
uint8_t *metadata = av_packet_pack_dictionary(frame_metadata, &size); |
451 |
|
|
|
452 |
✗✓ |
430 |
if (!metadata) { |
453 |
|
|
ret = AVERROR(ENOMEM); |
454 |
|
|
goto fail; |
455 |
|
|
} |
456 |
✗✓ |
430 |
if ((ret = av_packet_add_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, |
457 |
|
|
metadata, size)) < 0) { |
458 |
|
|
av_freep(&metadata); |
459 |
|
|
goto fail;; |
460 |
|
|
} |
461 |
|
|
} |
462 |
|
|
|
463 |
✗✓ |
9832 |
if ((ret = create_subcc_packet(avctx, frame, min_pts_sink_idx)) < 0) { |
464 |
|
|
goto fail; |
465 |
|
|
} |
466 |
|
|
|
467 |
|
9832 |
pkt->stream_index = stream_idx; |
468 |
|
9832 |
pkt->pts = frame->pts; |
469 |
|
9832 |
pkt->pos = frame->pkt_pos; |
470 |
|
9832 |
av_frame_unref(frame); |
471 |
|
9832 |
return size; |
472 |
|
|
fail: |
473 |
|
|
av_frame_unref(frame); |
474 |
|
|
return ret; |
475 |
|
|
|
476 |
|
|
} |
477 |
|
|
|
478 |
|
|
#define OFFSET(x) offsetof(LavfiContext, x) |
479 |
|
|
|
480 |
|
|
#define DEC AV_OPT_FLAG_DECODING_PARAM |
481 |
|
|
|
482 |
|
|
static const AVOption options[] = { |
483 |
|
|
{ "graph", "set libavfilter graph", OFFSET(graph_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, |
484 |
|
|
{ "graph_file","set libavfilter graph filename", OFFSET(graph_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC}, |
485 |
|
|
{ "dumpgraph", "dump graph to stderr", OFFSET(dump_graph), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, |
486 |
|
|
{ NULL }, |
487 |
|
|
}; |
488 |
|
|
|
489 |
|
|
static const AVClass lavfi_class = { |
490 |
|
|
.class_name = "lavfi indev", |
491 |
|
|
.item_name = av_default_item_name, |
492 |
|
|
.option = options, |
493 |
|
|
.version = LIBAVUTIL_VERSION_INT, |
494 |
|
|
.category = AV_CLASS_CATEGORY_DEVICE_INPUT, |
495 |
|
|
}; |
496 |
|
|
|
497 |
|
|
AVInputFormat ff_lavfi_demuxer = { |
498 |
|
|
.name = "lavfi", |
499 |
|
|
.long_name = NULL_IF_CONFIG_SMALL("Libavfilter virtual input device"), |
500 |
|
|
.priv_data_size = sizeof(LavfiContext), |
501 |
|
|
.read_header = lavfi_read_header, |
502 |
|
|
.read_packet = lavfi_read_packet, |
503 |
|
|
.read_close = lavfi_read_close, |
504 |
|
|
.flags = AVFMT_NOFILE, |
505 |
|
|
.priv_class = &lavfi_class, |
506 |
|
|
}; |