fate: Split fate-siff test into demuxer and VB video decoder test
[ffmpeg.git] / avconv_filter.c
1 /*
2  * avconv filter configuration
3  *
4  * This file is part of Libav.
5  *
6  * Libav 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  * Libav 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 Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 #include "avconv.h"
22
23 #include "libavfilter/avfilter.h"
24 #include "libavfilter/avfiltergraph.h"
25
26 #include "libavutil/avassert.h"
27 #include "libavutil/channel_layout.h"
28 #include "libavutil/pixdesc.h"
29 #include "libavutil/pixfmt.h"
30 #include "libavutil/samplefmt.h"
31
32 /* Define a function for building a string containing a list of
33  * allowed formats. */
34 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator)\
35 static char *choose_ ## var ## s(OutputStream *ost)                            \
36 {                                                                              \
37     if (ost->st->codec->var != none) {                                         \
38         get_name(ost->st->codec->var);                                         \
39         return av_strdup(name);                                                \
40     } else if (ost->enc->supported_list) {                                     \
41         const type *p;                                                         \
42         AVIOContext *s = NULL;                                                 \
43         uint8_t *ret;                                                          \
44         int len;                                                               \
45                                                                                \
46         if (avio_open_dyn_buf(&s) < 0)                                         \
47             exit(1);                                                           \
48                                                                                \
49         for (p = ost->enc->supported_list; *p != none; p++) {                  \
50             get_name(*p);                                                      \
51             avio_printf(s, "%s" separator, name);                              \
52         }                                                                      \
53         len = avio_close_dyn_buf(s, &ret);                                     \
54         ret[len - 1] = 0;                                                      \
55         return ret;                                                            \
56     } else                                                                     \
57         return NULL;                                                           \
58 }
59
60 DEF_CHOOSE_FORMAT(enum AVPixelFormat, pix_fmt, pix_fmts, AV_PIX_FMT_NONE,
61                   GET_PIX_FMT_NAME, ":")
62
63 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
64                   AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
65
66 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
67                   GET_SAMPLE_RATE_NAME, ",")
68
69 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
70                   GET_CH_LAYOUT_NAME, ",")
71
72 FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
73 {
74     FilterGraph *fg = av_mallocz(sizeof(*fg));
75
76     if (!fg)
77         exit(1);
78     fg->index = nb_filtergraphs;
79
80     GROW_ARRAY(fg->outputs, fg->nb_outputs);
81     if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
82         exit(1);
83     fg->outputs[0]->ost   = ost;
84     fg->outputs[0]->graph = fg;
85
86     ost->filter = fg->outputs[0];
87
88     GROW_ARRAY(fg->inputs, fg->nb_inputs);
89     if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
90         exit(1);
91     fg->inputs[0]->ist   = ist;
92     fg->inputs[0]->graph = fg;
93
94     GROW_ARRAY(ist->filters, ist->nb_filters);
95     ist->filters[ist->nb_filters - 1] = fg->inputs[0];
96
97     GROW_ARRAY(filtergraphs, nb_filtergraphs);
98     filtergraphs[nb_filtergraphs - 1] = fg;
99
100     return fg;
101 }
102
103 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
104 {
105     InputStream *ist = NULL;
106     enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
107     int i;
108
109     // TODO: support other filter types
110     if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
111         av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
112                "currently.\n");
113         exit(1);
114     }
115
116     if (in->name) {
117         AVFormatContext *s;
118         AVStream       *st = NULL;
119         char *p;
120         int file_idx = strtol(in->name, &p, 0);
121
122         if (file_idx < 0 || file_idx >= nb_input_files) {
123             av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtegraph description %s.\n",
124                    file_idx, fg->graph_desc);
125             exit(1);
126         }
127         s = input_files[file_idx]->ctx;
128
129         for (i = 0; i < s->nb_streams; i++) {
130             if (s->streams[i]->codec->codec_type != type)
131                 continue;
132             if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
133                 st = s->streams[i];
134                 break;
135             }
136         }
137         if (!st) {
138             av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
139                    "matches no streams.\n", p, fg->graph_desc);
140             exit(1);
141         }
142         ist = input_streams[input_files[file_idx]->ist_index + st->index];
143     } else {
144         /* find the first unused stream of corresponding type */
145         for (i = 0; i < nb_input_streams; i++) {
146             ist = input_streams[i];
147             if (ist->st->codec->codec_type == type && ist->discard)
148                 break;
149         }
150         if (i == nb_input_streams) {
151             av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
152                    "unlabeled input pad %d on filter %s", in->pad_idx,
153                    in->filter_ctx->name);
154             exit(1);
155         }
156     }
157     av_assert0(ist);
158
159     ist->discard         = 0;
160     ist->decoding_needed = 1;
161     ist->st->discard = AVDISCARD_NONE;
162
163     GROW_ARRAY(fg->inputs, fg->nb_inputs);
164     if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
165         exit(1);
166     fg->inputs[fg->nb_inputs - 1]->ist   = ist;
167     fg->inputs[fg->nb_inputs - 1]->graph = fg;
168
169     GROW_ARRAY(ist->filters, ist->nb_filters);
170     ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
171 }
172
173 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
174 {
175     char *pix_fmts;
176     OutputStream *ost = ofilter->ost;
177     AVCodecContext *codec = ost->st->codec;
178     AVFilterContext *last_filter = out->filter_ctx;
179     int pad_idx = out->pad_idx;
180     int ret;
181     char name[255];
182
183     snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
184     ret = avfilter_graph_create_filter(&ofilter->filter,
185                                        avfilter_get_by_name("buffersink"),
186                                        name, NULL, NULL, fg->graph);
187     if (ret < 0)
188         return ret;
189
190     if (codec->width || codec->height) {
191         char args[255];
192         AVFilterContext *filter;
193
194         snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
195                  codec->width,
196                  codec->height,
197                  (unsigned)ost->sws_flags);
198         snprintf(name, sizeof(name), "scaler for output stream %d:%d",
199                  ost->file_index, ost->index);
200         if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
201                                                 name, args, NULL, fg->graph)) < 0)
202             return ret;
203         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
204             return ret;
205
206         last_filter = filter;
207         pad_idx = 0;
208     }
209
210     if ((pix_fmts = choose_pix_fmts(ost))) {
211         AVFilterContext *filter;
212         snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
213                  ost->file_index, ost->index);
214         if ((ret = avfilter_graph_create_filter(&filter,
215                                                 avfilter_get_by_name("format"),
216                                                 "format", pix_fmts, NULL,
217                                                 fg->graph)) < 0)
218             return ret;
219         if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
220             return ret;
221
222         last_filter = filter;
223         pad_idx     = 0;
224         av_freep(&pix_fmts);
225     }
226
227     if (ost->frame_rate.num) {
228         AVFilterContext *fps;
229         char args[255];
230
231         snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
232                  ost->frame_rate.den);
233         snprintf(name, sizeof(name), "fps for output stream %d:%d",
234                  ost->file_index, ost->index);
235         ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
236                                            name, args, NULL, fg->graph);
237         if (ret < 0)
238             return ret;
239
240         ret = avfilter_link(last_filter, pad_idx, fps, 0);
241         if (ret < 0)
242             return ret;
243         last_filter = fps;
244         pad_idx = 0;
245     }
246
247     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
248         return ret;
249
250     return 0;
251 }
252
253 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
254 {
255     OutputStream *ost = ofilter->ost;
256     AVCodecContext *codec  = ost->st->codec;
257     AVFilterContext *last_filter = out->filter_ctx;
258     int pad_idx = out->pad_idx;
259     char *sample_fmts, *sample_rates, *channel_layouts;
260     char name[255];
261     int ret;
262
263
264     snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
265     ret = avfilter_graph_create_filter(&ofilter->filter,
266                                        avfilter_get_by_name("abuffersink"),
267                                        name, NULL, NULL, fg->graph);
268     if (ret < 0)
269         return ret;
270
271     if (codec->channels && !codec->channel_layout)
272         codec->channel_layout = av_get_default_channel_layout(codec->channels);
273
274     sample_fmts     = choose_sample_fmts(ost);
275     sample_rates    = choose_sample_rates(ost);
276     channel_layouts = choose_channel_layouts(ost);
277     if (sample_fmts || sample_rates || channel_layouts) {
278         AVFilterContext *format;
279         char args[256];
280         int len = 0;
281
282         if (sample_fmts)
283             len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
284                             sample_fmts);
285         if (sample_rates)
286             len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
287                             sample_rates);
288         if (channel_layouts)
289             len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
290                             channel_layouts);
291         args[len - 1] = 0;
292
293         av_freep(&sample_fmts);
294         av_freep(&sample_rates);
295         av_freep(&channel_layouts);
296
297         snprintf(name, sizeof(name), "audio format for output stream %d:%d",
298                  ost->file_index, ost->index);
299         ret = avfilter_graph_create_filter(&format,
300                                            avfilter_get_by_name("aformat"),
301                                            name, args, NULL, fg->graph);
302         if (ret < 0)
303             return ret;
304
305         ret = avfilter_link(last_filter, pad_idx, format, 0);
306         if (ret < 0)
307             return ret;
308
309         last_filter = format;
310         pad_idx = 0;
311     }
312
313     if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
314         return ret;
315
316     return 0;
317 }
318
319 #define DESCRIBE_FILTER_LINK(f, inout, in)                         \
320 {                                                                  \
321     AVFilterContext *ctx = inout->filter_ctx;                      \
322     AVFilterPad *pads = in ? ctx->input_pads  : ctx->output_pads;  \
323     int       nb_pads = in ? ctx->input_count : ctx->output_count; \
324     AVIOContext *pb;                                               \
325                                                                    \
326     if (avio_open_dyn_buf(&pb) < 0)                                \
327         exit(1);                                                   \
328                                                                    \
329     avio_printf(pb, "%s", ctx->filter->name);                      \
330     if (nb_pads > 1)                                               \
331         avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
332     avio_w8(pb, 0);                                                \
333     avio_close_dyn_buf(pb, &f->name);                              \
334 }
335
336 int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
337 {
338     av_freep(&ofilter->name);
339     DESCRIBE_FILTER_LINK(ofilter, out, 0);
340
341     switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
342     case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
343     case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
344     default: av_assert0(0);
345     }
346 }
347
348 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
349                                         AVFilterInOut *in)
350 {
351     AVFilterContext *first_filter = in->filter_ctx;
352     AVFilter *filter = avfilter_get_by_name("buffer");
353     InputStream *ist = ifilter->ist;
354     AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
355                                          ist->st->time_base;
356     AVRational sar;
357     char args[255], name[255];
358     int pad_idx = in->pad_idx;
359     int ret;
360
361     sar = ist->st->sample_aspect_ratio.num ?
362           ist->st->sample_aspect_ratio :
363           ist->st->codec->sample_aspect_ratio;
364     snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
365              ist->st->codec->height, ist->st->codec->pix_fmt,
366              tb.num, tb.den, sar.num, sar.den);
367     snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
368              ist->file_index, ist->st->index);
369
370     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, name,
371                                             args, NULL, fg->graph)) < 0)
372         return ret;
373
374     if (ist->framerate.num) {
375         AVFilterContext *setpts;
376
377         snprintf(name, sizeof(name), "force CFR for input from stream %d:%d",
378                  ist->file_index, ist->st->index);
379         if ((ret = avfilter_graph_create_filter(&setpts,
380                                                 avfilter_get_by_name("setpts"),
381                                                 name, "N", NULL,
382                                                 fg->graph)) < 0)
383             return ret;
384
385         if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
386             return ret;
387
388         first_filter = setpts;
389         pad_idx = 0;
390     }
391
392     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
393         return ret;
394     return 0;
395 }
396
397 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
398                                         AVFilterInOut *in)
399 {
400     AVFilterContext *first_filter = in->filter_ctx;
401     AVFilter *filter = avfilter_get_by_name("abuffer");
402     InputStream *ist = ifilter->ist;
403     int pad_idx = in->pad_idx;
404     char args[255], name[255];
405     int ret;
406
407     snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
408              ":channel_layout=0x%"PRIx64,
409              1, ist->st->codec->sample_rate,
410              ist->st->codec->sample_rate,
411              av_get_sample_fmt_name(ist->st->codec->sample_fmt),
412              ist->st->codec->channel_layout);
413     snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
414              ist->file_index, ist->st->index);
415
416     if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
417                                             name, args, NULL,
418                                             fg->graph)) < 0)
419         return ret;
420
421     if (audio_sync_method > 0) {
422         AVFilterContext *async;
423         int  len = 0;
424
425         av_log(NULL, AV_LOG_WARNING, "-async has been deprecated. Used the "
426                "asyncts audio filter instead.\n");
427
428         if (audio_sync_method > 1)
429             len += snprintf(args + len, sizeof(args) - len, "compensate=1:"
430                             "max_comp=%d:", audio_sync_method);
431         snprintf(args + len, sizeof(args) - len, "min_delta=%f",
432                  audio_drift_threshold);
433
434         snprintf(name, sizeof(name), "graph %d audio sync for input stream %d:%d",
435                  fg->index, ist->file_index, ist->st->index);
436         ret = avfilter_graph_create_filter(&async,
437                                            avfilter_get_by_name("asyncts"),
438                                            name, args, NULL, fg->graph);
439         if (ret < 0)
440             return ret;
441
442         ret = avfilter_link(async, 0, first_filter, pad_idx);
443         if (ret < 0)
444             return ret;
445
446         first_filter = async;
447         pad_idx = 0;
448     }
449     if (audio_volume != 256) {
450         AVFilterContext *volume;
451
452         av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
453                "audio filter instead.\n");
454
455         snprintf(args, sizeof(args), "volume=%f", audio_volume / 256.0);
456
457         snprintf(name, sizeof(name), "graph %d volume for input stream %d:%d",
458                  fg->index, ist->file_index, ist->st->index);
459         ret = avfilter_graph_create_filter(&volume,
460                                            avfilter_get_by_name("volume"),
461                                            name, args, NULL, fg->graph);
462         if (ret < 0)
463             return ret;
464
465         ret = avfilter_link(volume, 0, first_filter, pad_idx);
466         if (ret < 0)
467             return ret;
468
469         first_filter = volume;
470         pad_idx = 0;
471     }
472     if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
473         return ret;
474
475     return 0;
476 }
477
478 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
479                                   AVFilterInOut *in)
480 {
481     av_freep(&ifilter->name);
482     DESCRIBE_FILTER_LINK(ifilter, in, 1);
483
484     switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
485     case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
486     case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
487     default: av_assert0(0);
488     }
489 }
490
491 int configure_filtergraph(FilterGraph *fg)
492 {
493     AVFilterInOut *inputs, *outputs, *cur;
494     int ret, i, init = !fg->graph, simple = !fg->graph_desc;
495     const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
496                                       fg->graph_desc;
497
498     avfilter_graph_free(&fg->graph);
499     if (!(fg->graph = avfilter_graph_alloc()))
500         return AVERROR(ENOMEM);
501
502     if (simple) {
503         OutputStream *ost = fg->outputs[0]->ost;
504         char args[255];
505         snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
506         fg->graph->scale_sws_opts = av_strdup(args);
507     }
508
509     if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
510         return ret;
511
512     if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
513         av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
514                "exactly one input and output.\n", graph_desc);
515         return AVERROR(EINVAL);
516     }
517
518     for (cur = inputs; !simple && init && cur; cur = cur->next)
519         init_input_filter(fg, cur);
520
521     for (cur = inputs, i = 0; cur; cur = cur->next, i++)
522         if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
523             return ret;
524     avfilter_inout_free(&inputs);
525
526     if (!init || simple) {
527         /* we already know the mappings between lavfi outputs and output streams,
528          * so we can finish the setup */
529         for (cur = outputs, i = 0; cur; cur = cur->next, i++)
530             configure_output_filter(fg, fg->outputs[i], cur);
531         avfilter_inout_free(&outputs);
532
533         if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
534             return ret;
535     } else {
536         /* wait until output mappings are processed */
537         for (cur = outputs; cur;) {
538             GROW_ARRAY(fg->outputs, fg->nb_outputs);
539             if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
540                 exit(1);
541             fg->outputs[fg->nb_outputs - 1]->graph   = fg;
542             fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
543             cur = cur->next;
544             fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
545         }
546     }
547
548     return 0;
549 }
550
551 int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
552 {
553     int i;
554     for (i = 0; i < fg->nb_inputs; i++)
555         if (fg->inputs[i]->ist == ist)
556             return 1;
557     return 0;
558 }
559