blob: 3ca2ba4bbef5871b8821bb355c91b3300fa48e2a
1 | #include <stdio.h> |
2 | #include <stdlib.h> |
3 | #include <string.h> |
4 | #include "libavutil/avassert.h" |
5 | #include "libavdevice/avdevice.h" |
6 | #include "libavfilter/avfilter.h" |
7 | #include "libavfilter/buffersink.h" |
8 | #include "libavformat/avformat.h" |
9 | |
10 | typedef struct { |
11 | AVFormatContext *mux; |
12 | AVStream *stream; |
13 | AVFilterContext *sink; |
14 | AVFilterLink *link; |
15 | } Stream; |
16 | |
17 | static int create_sink(Stream *st, AVFilterGraph *graph, |
18 | AVFilterContext *f, int idx) |
19 | { |
20 | enum AVMediaType type = avfilter_pad_get_type(f->output_pads, idx); |
21 | const char *sink_name; |
22 | int ret; |
23 | |
24 | switch (type) { |
25 | case AVMEDIA_TYPE_VIDEO: sink_name = "buffersink"; break; |
26 | case AVMEDIA_TYPE_AUDIO: sink_name = "abuffersink"; break; |
27 | default: |
28 | av_log(NULL, AV_LOG_ERROR, "Stream type not supported\n"); |
29 | return AVERROR(EINVAL); |
30 | } |
31 | ret = avfilter_graph_create_filter(&st->sink, |
32 | avfilter_get_by_name(sink_name), |
33 | NULL, NULL, NULL, graph); |
34 | if (ret < 0) |
35 | return ret; |
36 | ret = avfilter_link(f, idx, st->sink, 0); |
37 | if (ret < 0) |
38 | return ret; |
39 | st->link = st->sink->inputs[0]; |
40 | return 0; |
41 | } |
42 | |
43 | int main(int argc, char **argv) |
44 | { |
45 | char *in_graph_desc, **out_dev_name; |
46 | int nb_out_dev = 0, nb_streams = 0; |
47 | AVFilterGraph *in_graph = NULL; |
48 | Stream *streams = NULL, *st; |
49 | AVFrame *frame = NULL; |
50 | int i, j, run = 1, ret; |
51 | |
52 | //av_log_set_level(AV_LOG_DEBUG); |
53 | |
54 | if (argc < 3) { |
55 | av_log(NULL, AV_LOG_ERROR, |
56 | "Usage: %s filter_graph dev:out [dev2:out2...]\n\n" |
57 | "Examples:\n" |
58 | "%s movie=file.nut:s=v+a xv:- alsa:default\n" |
59 | "%s movie=file.nut:s=v+a uncodedframecrc:pipe:0\n", |
60 | argv[0], argv[0], argv[0]); |
61 | exit(1); |
62 | } |
63 | in_graph_desc = argv[1]; |
64 | out_dev_name = argv + 2; |
65 | nb_out_dev = argc - 2; |
66 | |
67 | av_register_all(); |
68 | avdevice_register_all(); |
69 | avfilter_register_all(); |
70 | |
71 | /* Create input graph */ |
72 | if (!(in_graph = avfilter_graph_alloc())) { |
73 | ret = AVERROR(ENOMEM); |
74 | av_log(NULL, AV_LOG_ERROR, "Unable to alloc graph graph: %s\n", |
75 | av_err2str(ret)); |
76 | goto fail; |
77 | } |
78 | ret = avfilter_graph_parse_ptr(in_graph, in_graph_desc, NULL, NULL, NULL); |
79 | if (ret < 0) { |
80 | av_log(NULL, AV_LOG_ERROR, "Unable to parse graph: %s\n", |
81 | av_err2str(ret)); |
82 | goto fail; |
83 | } |
84 | nb_streams = 0; |
85 | for (i = 0; i < in_graph->nb_filters; i++) { |
86 | AVFilterContext *f = in_graph->filters[i]; |
87 | for (j = 0; j < f->nb_inputs; j++) { |
88 | if (!f->inputs[j]) { |
89 | av_log(NULL, AV_LOG_ERROR, "Graph has unconnected inputs\n"); |
90 | ret = AVERROR(EINVAL); |
91 | goto fail; |
92 | } |
93 | } |
94 | for (j = 0; j < f->nb_outputs; j++) |
95 | if (!f->outputs[j]) |
96 | nb_streams++; |
97 | } |
98 | if (!nb_streams) { |
99 | av_log(NULL, AV_LOG_ERROR, "Graph has no output stream\n"); |
100 | ret = AVERROR(EINVAL); |
101 | goto fail; |
102 | } |
103 | if (nb_out_dev != 1 && nb_out_dev != nb_streams) { |
104 | av_log(NULL, AV_LOG_ERROR, |
105 | "Graph has %d output streams, %d devices given\n", |
106 | nb_streams, nb_out_dev); |
107 | ret = AVERROR(EINVAL); |
108 | goto fail; |
109 | } |
110 | |
111 | if (!(streams = av_calloc(nb_streams, sizeof(*streams)))) { |
112 | ret = AVERROR(ENOMEM); |
113 | av_log(NULL, AV_LOG_ERROR, "Could not allocate streams\n"); |
114 | } |
115 | st = streams; |
116 | for (i = 0; i < in_graph->nb_filters; i++) { |
117 | AVFilterContext *f = in_graph->filters[i]; |
118 | for (j = 0; j < f->nb_outputs; j++) { |
119 | if (!f->outputs[j]) { |
120 | if ((ret = create_sink(st++, in_graph, f, j)) < 0) |
121 | goto fail; |
122 | } |
123 | } |
124 | } |
125 | av_assert0(st - streams == nb_streams); |
126 | if ((ret = avfilter_graph_config(in_graph, NULL)) < 0) { |
127 | av_log(NULL, AV_LOG_ERROR, "Failed to configure graph\n"); |
128 | goto fail; |
129 | } |
130 | |
131 | /* Create output devices */ |
132 | for (i = 0; i < nb_out_dev; i++) { |
133 | char *fmt = NULL, *dev = out_dev_name[i]; |
134 | st = &streams[i]; |
135 | if ((dev = strchr(dev, ':'))) { |
136 | *(dev++) = 0; |
137 | fmt = out_dev_name[i]; |
138 | } |
139 | ret = avformat_alloc_output_context2(&st->mux, NULL, fmt, dev); |
140 | if (ret < 0) { |
141 | av_log(NULL, AV_LOG_ERROR, "Failed to allocate output: %s\n", |
142 | av_err2str(ret)); |
143 | goto fail; |
144 | } |
145 | if (!(st->mux->oformat->flags & AVFMT_NOFILE)) { |
146 | ret = avio_open2(&st->mux->pb, st->mux->filename, AVIO_FLAG_WRITE, |
147 | NULL, NULL); |
148 | if (ret < 0) { |
149 | av_log(st->mux, AV_LOG_ERROR, "Failed to init output: %s\n", |
150 | av_err2str(ret)); |
151 | goto fail; |
152 | } |
153 | } |
154 | } |
155 | for (; i < nb_streams; i++) |
156 | streams[i].mux = streams[0].mux; |
157 | |
158 | /* Create output device streams */ |
159 | for (i = 0; i < nb_streams; i++) { |
160 | st = &streams[i]; |
161 | if (!(st->stream = avformat_new_stream(st->mux, NULL))) { |
162 | ret = AVERROR(ENOMEM); |
163 | av_log(NULL, AV_LOG_ERROR, "Failed to create output stream\n"); |
164 | goto fail; |
165 | } |
166 | st->stream->codec->codec_type = st->link->type; |
167 | st->stream->time_base = st->stream->codec->time_base = |
168 | st->link->time_base; |
169 | switch (st->link->type) { |
170 | case AVMEDIA_TYPE_VIDEO: |
171 | st->stream->codec->codec_id = AV_CODEC_ID_RAWVIDEO; |
172 | st->stream->avg_frame_rate = |
173 | st->stream-> r_frame_rate = av_buffersink_get_frame_rate(st->sink); |
174 | st->stream->codec->width = st->link->w; |
175 | st->stream->codec->height = st->link->h; |
176 | st->stream->codec->sample_aspect_ratio = st->link->sample_aspect_ratio; |
177 | st->stream->codec->pix_fmt = st->link->format; |
178 | break; |
179 | case AVMEDIA_TYPE_AUDIO: |
180 | st->stream->codec->channel_layout = st->link->channel_layout; |
181 | st->stream->codec->channels = avfilter_link_get_channels(st->link); |
182 | st->stream->codec->sample_rate = st->link->sample_rate; |
183 | st->stream->codec->sample_fmt = st->link->format; |
184 | st->stream->codec->codec_id = |
185 | av_get_pcm_codec(st->stream->codec->sample_fmt, -1); |
186 | break; |
187 | default: |
188 | av_assert0(!"reached"); |
189 | } |
190 | } |
191 | |
192 | /* Init output devices */ |
193 | for (i = 0; i < nb_out_dev; i++) { |
194 | st = &streams[i]; |
195 | if ((ret = avformat_write_header(st->mux, NULL)) < 0) { |
196 | av_log(st->mux, AV_LOG_ERROR, "Failed to init output: %s\n", |
197 | av_err2str(ret)); |
198 | goto fail; |
199 | } |
200 | } |
201 | |
202 | /* Check output devices */ |
203 | for (i = 0; i < nb_streams; i++) { |
204 | st = &streams[i]; |
205 | ret = av_write_uncoded_frame_query(st->mux, st->stream->index); |
206 | if (ret < 0) { |
207 | av_log(st->mux, AV_LOG_ERROR, |
208 | "Uncoded frames not supported on stream #%d: %s\n", |
209 | i, av_err2str(ret)); |
210 | goto fail; |
211 | } |
212 | } |
213 | |
214 | while (run) { |
215 | ret = avfilter_graph_request_oldest(in_graph); |
216 | if (ret < 0) { |
217 | if (ret == AVERROR_EOF) { |
218 | run = 0; |
219 | } else { |
220 | av_log(NULL, AV_LOG_ERROR, "Error filtering: %s\n", |
221 | av_err2str(ret)); |
222 | break; |
223 | } |
224 | } |
225 | for (i = 0; i < nb_streams; i++) { |
226 | st = &streams[i]; |
227 | while (1) { |
228 | if (!frame && !(frame = av_frame_alloc())) { |
229 | ret = AVERROR(ENOMEM); |
230 | av_log(NULL, AV_LOG_ERROR, "Could not allocate frame\n"); |
231 | goto fail; |
232 | } |
233 | ret = av_buffersink_get_frame_flags(st->sink, frame, |
234 | AV_BUFFERSINK_FLAG_NO_REQUEST); |
235 | if (ret < 0) { |
236 | if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) |
237 | av_log(NULL, AV_LOG_WARNING, "Error in sink: %s\n", |
238 | av_err2str(ret)); |
239 | break; |
240 | } |
241 | if (frame->pts != AV_NOPTS_VALUE) |
242 | frame->pts = av_rescale_q(frame->pts, |
243 | st->link ->time_base, |
244 | st->stream->time_base); |
245 | ret = av_interleaved_write_uncoded_frame(st->mux, |
246 | st->stream->index, |
247 | frame); |
248 | frame = NULL; |
249 | if (ret < 0) { |
250 | av_log(st->stream->codec, AV_LOG_ERROR, |
251 | "Error writing frame: %s\n", av_err2str(ret)); |
252 | goto fail; |
253 | } |
254 | } |
255 | } |
256 | } |
257 | ret = 0; |
258 | |
259 | for (i = 0; i < nb_out_dev; i++) { |
260 | st = &streams[i]; |
261 | av_write_trailer(st->mux); |
262 | } |
263 | |
264 | fail: |
265 | av_frame_free(&frame); |
266 | avfilter_graph_free(&in_graph); |
267 | if (streams) { |
268 | for (i = 0; i < nb_out_dev; i++) { |
269 | st = &streams[i]; |
270 | if (st->mux) { |
271 | if (st->mux->pb) |
272 | avio_closep(&st->mux->pb); |
273 | avformat_free_context(st->mux); |
274 | } |
275 | } |
276 | } |
277 | av_freep(&streams); |
278 | return ret < 0; |
279 | } |
280 |