Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Newer
Older
100644 790 lines (686 sloc) 32.222 kb
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
1 /*
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
2 * ffmpeg filter configuration
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
3 *
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
4 * This file is part of FFmpeg.
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
5 *
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
6 * FFmpeg is free software; you can redistribute it and/or
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
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 *
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
11 * FFmpeg is distributed in the hope that it will be useful,
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
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
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
17 * License along with FFmpeg; if not, write to the Free Software
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
21 #include "ffmpeg.h"
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
22
23 #include "libavfilter/avfilter.h"
24 #include "libavfilter/avfiltergraph.h"
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
25 #include "libavfilter/buffersink.h"
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
26
27 #include "libavutil/audioconvert.h"
28 #include "libavutil/avassert.h"
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
29 #include "libavutil/avstring.h"
30 #include "libavutil/bprint.h"
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
31 #include "libavutil/pixdesc.h"
32 #include "libavutil/pixfmt.h"
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
33 #include "libavutil/imgutils.h"
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
34 #include "libavutil/samplefmt.h"
35
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
36 enum PixelFormat choose_pixel_fmt(AVStream *st, AVCodec *codec, enum PixelFormat target)
37 {
38 if (codec && codec->pix_fmts) {
39 const enum PixelFormat *p = codec->pix_fmts;
40 int has_alpha= av_pix_fmt_descriptors[target].nb_components % 2 == 0;
41 enum PixelFormat best= PIX_FMT_NONE;
42 if (st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
43 if (st->codec->codec_id == AV_CODEC_ID_MJPEG) {
44 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
45 } else if (st->codec->codec_id == AV_CODEC_ID_LJPEG) {
46 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
47 PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
48 }
49 }
50 for (; *p != PIX_FMT_NONE; p++) {
51 best= avcodec_find_best_pix_fmt2(best, *p, target, has_alpha, NULL);
52 if (*p == target)
53 break;
54 }
55 if (*p == PIX_FMT_NONE) {
56 if (target != PIX_FMT_NONE)
57 av_log(NULL, AV_LOG_WARNING,
58 "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
59 av_pix_fmt_descriptors[target].name,
60 codec->name,
61 av_pix_fmt_descriptors[best].name);
62 return best;
63 }
64 }
65 return target;
66 }
67
68 void choose_sample_fmt(AVStream *st, AVCodec *codec)
69 {
70 if (codec && codec->sample_fmts) {
71 const enum AVSampleFormat *p = codec->sample_fmts;
72 for (; *p != -1; p++) {
73 if (*p == st->codec->sample_fmt)
74 break;
75 }
76 if (*p == -1) {
77 if((codec->capabilities & CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0]))
78 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
79 if(av_get_sample_fmt_name(st->codec->sample_fmt))
80 av_log(NULL, AV_LOG_WARNING,
81 "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
82 av_get_sample_fmt_name(st->codec->sample_fmt),
83 codec->name,
84 av_get_sample_fmt_name(codec->sample_fmts[0]));
85 st->codec->sample_fmt = codec->sample_fmts[0];
86 }
87 }
88 }
89
90 static char *choose_pix_fmts(OutputStream *ost)
91 {
92 if (ost->keep_pix_fmt) {
93 if (ost->filter)
94 avfilter_graph_set_auto_convert(ost->filter->graph->graph,
95 AVFILTER_AUTO_CONVERT_NONE);
96 if (ost->st->codec->pix_fmt == PIX_FMT_NONE)
97 return NULL;
98 return av_strdup(av_get_pix_fmt_name(ost->st->codec->pix_fmt));
99 }
100 if (ost->st->codec->pix_fmt != PIX_FMT_NONE) {
101 return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc, ost->st->codec->pix_fmt)));
102 } else if (ost->enc && ost->enc->pix_fmts) {
103 const enum PixelFormat *p;
104 AVIOContext *s = NULL;
105 uint8_t *ret;
106 int len;
107
108 if (avio_open_dyn_buf(&s) < 0)
109 exit_program(1);
110
111 p = ost->enc->pix_fmts;
112 if (ost->st->codec->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
113 if (ost->st->codec->codec_id == AV_CODEC_ID_MJPEG) {
114 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE };
115 } else if (ost->st->codec->codec_id == AV_CODEC_ID_LJPEG) {
116 p = (const enum PixelFormat[]) { PIX_FMT_YUVJ420P, PIX_FMT_YUVJ422P, PIX_FMT_YUVJ444P, PIX_FMT_YUV420P,
117 PIX_FMT_YUV422P, PIX_FMT_YUV444P, PIX_FMT_BGRA, PIX_FMT_NONE };
118 }
119 }
120
121 for (; *p != PIX_FMT_NONE; p++) {
122 const char *name = av_get_pix_fmt_name(*p);
123 avio_printf(s, "%s:", name);
124 }
125 len = avio_close_dyn_buf(s, &ret);
126 ret[len - 1] = 0;
127 return ret;
128 } else
129 return NULL;
130 }
131
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
132 /**
133 * Define a function for building a string containing a list of
134 * allowed formats,
135 */
136 #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name, separator)\
137 static char *choose_ ## var ## s(OutputStream *ost) \
138 { \
139 if (ost->st->codec->var != none) { \
140 get_name(ost->st->codec->var); \
141 return av_strdup(name); \
142 } else if (ost->enc->supported_list) { \
143 const type *p; \
144 AVIOContext *s = NULL; \
145 uint8_t *ret; \
146 int len; \
147 \
148 if (avio_open_dyn_buf(&s) < 0) \
149 exit_program(1); \
150 \
151 for (p = ost->enc->supported_list; *p != none; p++) { \
152 get_name(*p); \
153 avio_printf(s, "%s" separator, name); \
154 } \
155 len = avio_close_dyn_buf(s, &ret); \
156 ret[len - 1] = 0; \
157 return ret; \
158 } else \
159 return NULL; \
160 }
161
162 #define GET_PIX_FMT_NAME(pix_fmt)\
163 const char *name = av_get_pix_fmt_name(pix_fmt);
164
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
165 // DEF_CHOOSE_FORMAT(enum PixelFormat, pix_fmt, pix_fmts, PIX_FMT_NONE,
166 // GET_PIX_FMT_NAME, ":")
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
167
168 #define GET_SAMPLE_FMT_NAME(sample_fmt)\
169 const char *name = av_get_sample_fmt_name(sample_fmt)
170
171 DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
172 AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME, ",")
173
174 #define GET_SAMPLE_RATE_NAME(rate)\
175 char name[16];\
176 snprintf(name, sizeof(name), "%d", rate);
177
178 DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
179 GET_SAMPLE_RATE_NAME, ",")
180
181 #define GET_CH_LAYOUT_NAME(ch_layout)\
182 char name[16];\
183 snprintf(name, sizeof(name), "0x%"PRIx64, ch_layout);
184
185 DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
186 GET_CH_LAYOUT_NAME, ",")
187
188 FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
189 {
190 FilterGraph *fg = av_mallocz(sizeof(*fg));
191
192 if (!fg)
193 exit_program(1);
194 fg->index = nb_filtergraphs;
195
196 fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs), &fg->nb_outputs,
197 fg->nb_outputs + 1);
198 if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
199 exit_program(1);
200 fg->outputs[0]->ost = ost;
201 fg->outputs[0]->graph = fg;
202
203 ost->filter = fg->outputs[0];
204
205 fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs), &fg->nb_inputs,
206 fg->nb_inputs + 1);
207 if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
208 exit_program(1);
209 fg->inputs[0]->ist = ist;
210 fg->inputs[0]->graph = fg;
211
212 ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
213 &ist->nb_filters, ist->nb_filters + 1);
214 ist->filters[ist->nb_filters - 1] = fg->inputs[0];
215
216 filtergraphs = grow_array(filtergraphs, sizeof(*filtergraphs),
217 &nb_filtergraphs, nb_filtergraphs + 1);
218 filtergraphs[nb_filtergraphs - 1] = fg;
219
220 return fg;
221 }
222
223 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
224 {
225 InputStream *ist = NULL;
226 enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
227 int i;
228
229 // TODO: support other filter types
230 if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
231 av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
232 "currently.\n");
233 exit_program(1);
234 }
235
236 if (in->name) {
237 AVFormatContext *s;
238 AVStream *st = NULL;
239 char *p;
240 int file_idx = strtol(in->name, &p, 0);
241
242 if (file_idx < 0 || file_idx >= nb_input_files) {
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
243 av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
244 file_idx, fg->graph_desc);
245 exit_program(1);
246 }
247 s = input_files[file_idx]->ctx;
248
249 for (i = 0; i < s->nb_streams; i++) {
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
250 enum AVMediaType stream_type = s->streams[i]->codec->codec_type;
251 if (stream_type != type &&
252 !(stream_type == AVMEDIA_TYPE_SUBTITLE &&
253 type == AVMEDIA_TYPE_VIDEO /* sub2video hack */))
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
254 continue;
255 if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
256 st = s->streams[i];
257 break;
258 }
259 }
260 if (!st) {
261 av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
262 "matches no streams.\n", p, fg->graph_desc);
263 exit_program(1);
264 }
265 ist = input_streams[input_files[file_idx]->ist_index + st->index];
266 } else {
267 /* find the first unused stream of corresponding type */
268 for (i = 0; i < nb_input_streams; i++) {
269 ist = input_streams[i];
270 if (ist->st->codec->codec_type == type && ist->discard)
271 break;
272 }
273 if (i == nb_input_streams) {
274 av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
275 "unlabeled input pad %d on filter %s\n", in->pad_idx,
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
276 in->filter_ctx->name);
277 exit_program(1);
278 }
279 }
280 av_assert0(ist);
281
282 ist->discard = 0;
283 ist->decoding_needed = 1;
284 ist->st->discard = AVDISCARD_NONE;
285
286 fg->inputs = grow_array(fg->inputs, sizeof(*fg->inputs),
287 &fg->nb_inputs, fg->nb_inputs + 1);
288 if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
289 exit_program(1);
290 fg->inputs[fg->nb_inputs - 1]->ist = ist;
291 fg->inputs[fg->nb_inputs - 1]->graph = fg;
292
293 ist->filters = grow_array(ist->filters, sizeof(*ist->filters),
294 &ist->nb_filters, ist->nb_filters + 1);
295 ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
296 }
297
298 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
299 {
300 char *pix_fmts;
301 OutputStream *ost = ofilter->ost;
302 AVCodecContext *codec = ost->st->codec;
303 AVFilterContext *last_filter = out->filter_ctx;
304 int pad_idx = out->pad_idx;
305 int ret;
306 char name[255];
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
307 AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
308
309 snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
310 ret = avfilter_graph_create_filter(&ofilter->filter,
311 avfilter_get_by_name("buffersink"),
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
312 name, NULL, NULL/*buffersink_params*/, fg->graph);
313 av_freep(&buffersink_params);
314
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
315 if (ret < 0)
316 return ret;
317
318 if (codec->width || codec->height) {
319 char args[255];
320 AVFilterContext *filter;
321
322 snprintf(args, sizeof(args), "%d:%d:flags=0x%X",
323 codec->width,
324 codec->height,
325 (unsigned)ost->sws_flags);
326 snprintf(name, sizeof(name), "scaler for output stream %d:%d",
327 ost->file_index, ost->index);
328 if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
329 name, args, NULL, fg->graph)) < 0)
330 return ret;
331 if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
332 return ret;
333
334 last_filter = filter;
335 pad_idx = 0;
336 }
337
338 if ((pix_fmts = choose_pix_fmts(ost))) {
339 AVFilterContext *filter;
340 snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
341 ost->file_index, ost->index);
342 if ((ret = avfilter_graph_create_filter(&filter,
343 avfilter_get_by_name("format"),
344 "format", pix_fmts, NULL,
345 fg->graph)) < 0)
346 return ret;
347 if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
348 return ret;
349
350 last_filter = filter;
351 pad_idx = 0;
352 av_freep(&pix_fmts);
353 }
354
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
355 if (ost->frame_rate.num && 0) {
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
356 AVFilterContext *fps;
357 char args[255];
358
359 snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
360 ost->frame_rate.den);
361 snprintf(name, sizeof(name), "fps for output stream %d:%d",
362 ost->file_index, ost->index);
363 ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
364 name, args, NULL, fg->graph);
365 if (ret < 0)
366 return ret;
367
368 ret = avfilter_link(last_filter, pad_idx, fps, 0);
369 if (ret < 0)
370 return ret;
371 last_filter = fps;
372 pad_idx = 0;
373 }
374
375 if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
376 return ret;
377
378 return 0;
379 }
380
381 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
382 {
383 OutputStream *ost = ofilter->ost;
384 AVCodecContext *codec = ost->st->codec;
385 AVFilterContext *last_filter = out->filter_ctx;
386 int pad_idx = out->pad_idx;
387 char *sample_fmts, *sample_rates, *channel_layouts;
388 char name[255];
389 int ret;
390
391
392 snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
393 ret = avfilter_graph_create_filter(&ofilter->filter,
394 avfilter_get_by_name("abuffersink"),
395 name, NULL, NULL, fg->graph);
396 if (ret < 0)
397 return ret;
398
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
399 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do { \
400 AVFilterContext *filt_ctx; \
401 \
402 av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
403 "similarly to -af " filter_name "=%s.\n", arg); \
404 \
405 ret = avfilter_graph_create_filter(&filt_ctx, \
406 avfilter_get_by_name(filter_name), \
407 filter_name, arg, NULL, fg->graph); \
408 if (ret < 0) \
409 return ret; \
410 \
411 ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0); \
412 if (ret < 0) \
413 return ret; \
414 \
415 last_filter = filt_ctx; \
416 pad_idx = 0; \
417 } while (0)
418 if (ost->audio_channels_mapped) {
419 int i;
420 AVBPrint pan_buf;
421 av_bprint_init(&pan_buf, 256, 8192);
422 av_bprintf(&pan_buf, "0x%"PRIx64,
423 av_get_default_channel_layout(ost->audio_channels_mapped));
424 for (i = 0; i < ost->audio_channels_mapped; i++)
425 if (ost->audio_channels_map[i] != -1)
426 av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
427
428 AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
429 av_bprint_finalize(&pan_buf, NULL);
430 }
431
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
432 if (codec->channels && !codec->channel_layout)
433 codec->channel_layout = av_get_default_channel_layout(codec->channels);
434
435 sample_fmts = choose_sample_fmts(ost);
436 sample_rates = choose_sample_rates(ost);
437 channel_layouts = choose_channel_layouts(ost);
438 if (sample_fmts || sample_rates || channel_layouts) {
439 AVFilterContext *format;
440 char args[256];
441 int len = 0;
442
443 if (sample_fmts)
444 len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
445 sample_fmts);
446 if (sample_rates)
447 len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
448 sample_rates);
449 if (channel_layouts)
450 len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
451 channel_layouts);
452 args[len - 1] = 0;
453
454 av_freep(&sample_fmts);
455 av_freep(&sample_rates);
456 av_freep(&channel_layouts);
457
458 snprintf(name, sizeof(name), "audio format for output stream %d:%d",
459 ost->file_index, ost->index);
460 ret = avfilter_graph_create_filter(&format,
461 avfilter_get_by_name("aformat"),
462 name, args, NULL, fg->graph);
463 if (ret < 0)
464 return ret;
465
466 ret = avfilter_link(last_filter, pad_idx, format, 0);
467 if (ret < 0)
468 return ret;
469
470 last_filter = format;
471 pad_idx = 0;
472 }
473
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
474 if (audio_volume != 256 && 0) {
475 char args[256];
476
477 snprintf(args, sizeof(args), "%f", audio_volume / 256.);
478 AUTO_INSERT_FILTER("-vol", "volume", args);
479 }
480
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
481 if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
482 return ret;
483
484 return 0;
485 }
486
487 #define DESCRIBE_FILTER_LINK(f, inout, in) \
488 { \
489 AVFilterContext *ctx = inout->filter_ctx; \
490 AVFilterPad *pads = in ? ctx->input_pads : ctx->output_pads; \
491 int nb_pads = in ? ctx->input_count : ctx->output_count; \
492 AVIOContext *pb; \
493 \
494 if (avio_open_dyn_buf(&pb) < 0) \
495 exit_program(1); \
496 \
497 avio_printf(pb, "%s", ctx->filter->name); \
498 if (nb_pads > 1) \
499 avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
500 avio_w8(pb, 0); \
501 avio_close_dyn_buf(pb, &f->name); \
502 }
503
504 int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
505 {
506 av_freep(&ofilter->name);
507 DESCRIBE_FILTER_LINK(ofilter, out, 0);
508
509 switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
510 case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
511 case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
512 default: av_assert0(0);
513 }
514 }
515
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
516 static int sub2video_prepare(InputStream *ist)
517 {
518 AVFormatContext *avf = input_files[ist->file_index]->ctx;
519 int i, ret, w, h;
520 uint8_t *image[4];
521 int linesize[4];
522
523 /* Compute the size of the canvas for the subtitles stream.
524 If the subtitles codec has set a size, use it. Otherwise use the
525 maximum dimensions of the video streams in the same file. */
526 w = ist->st->codec->width;
527 h = ist->st->codec->height;
528 if (!(w && h)) {
529 for (i = 0; i < avf->nb_streams; i++) {
530 if (avf->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
531 w = FFMAX(w, avf->streams[i]->codec->width);
532 h = FFMAX(h, avf->streams[i]->codec->height);
533 }
534 }
535 if (!(w && h)) {
536 w = FFMAX(w, 720);
537 h = FFMAX(h, 576);
538 }
539 av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h);
540 }
541 ist->sub2video.w = ist->st->codec->width = w;
542 ist->sub2video.h = ist->st->codec->height = h;
543
544 /* rectangles are PIX_FMT_PAL8, but we have no guarantee that the
545 palettes for all rectangles are identical or compatible */
546 ist->st->codec->pix_fmt = PIX_FMT_RGB32;
547
548 ret = av_image_alloc(image, linesize, w, h, PIX_FMT_RGB32, 32);
549 if (ret < 0)
550 return ret;
551 memset(image[0], 0, h * linesize[0]);
552 ist->sub2video.ref = avfilter_get_video_buffer_ref_from_arrays(
553 image, linesize, AV_PERM_READ | AV_PERM_PRESERVE,
554 w, h, PIX_FMT_RGB32);
555 if (!ist->sub2video.ref) {
556 av_free(image[0]);
557 return AVERROR(ENOMEM);
558 }
559 return 0;
560 }
561
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
562 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
563 AVFilterInOut *in)
564 {
565 AVFilterContext *first_filter = in->filter_ctx;
566 AVFilter *filter = avfilter_get_by_name("buffer");
567 InputStream *ist = ifilter->ist;
568 AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
569 ist->st->time_base;
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
570 AVRational fr = ist->framerate.num ? ist->framerate :
571 ist->st->r_frame_rate;
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
572 AVRational sar;
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
573 AVBPrint args;
574 char name[255];
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
575 int pad_idx = in->pad_idx;
576 int ret;
577
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
578 if (ist->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
579 ret = sub2video_prepare(ist);
580 if (ret < 0)
581 return ret;
582 }
583
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
584 sar = ist->st->sample_aspect_ratio.num ?
585 ist->st->sample_aspect_ratio :
586 ist->st->codec->sample_aspect_ratio;
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
587 if(!sar.den)
588 sar = (AVRational){0,1};
589 av_bprint_init(&args, 0, 1);
590 av_bprintf(&args,
591 "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
592 "pixel_aspect=%d/%d:sws_param=flags=%d", ist->st->codec->width,
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
593 ist->st->codec->height, ist->st->codec->pix_fmt,
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
594 tb.num, tb.den, sar.num, sar.den,
595 SWS_BILINEAR + ((ist->st->codec->flags&CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0));
596 if (fr.num && fr.den)
597 av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
598 snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
599 ist->file_index, ist->st->index);
600
601 if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter, name,
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
602 args.str, NULL, fg->graph)) < 0)
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
603 return ret;
604
605 if (ist->framerate.num) {
606 AVFilterContext *setpts;
607
608 snprintf(name, sizeof(name), "force CFR for input from stream %d:%d",
609 ist->file_index, ist->st->index);
610 if ((ret = avfilter_graph_create_filter(&setpts,
611 avfilter_get_by_name("setpts"),
612 name, "N", NULL,
613 fg->graph)) < 0)
614 return ret;
615
616 if ((ret = avfilter_link(setpts, 0, first_filter, pad_idx)) < 0)
617 return ret;
618
619 first_filter = setpts;
620 pad_idx = 0;
621 }
622
623 if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
624 return ret;
625 return 0;
626 }
627
628 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
629 AVFilterInOut *in)
630 {
631 AVFilterContext *first_filter = in->filter_ctx;
632 AVFilter *filter = avfilter_get_by_name("abuffer");
633 InputStream *ist = ifilter->ist;
634 int pad_idx = in->pad_idx;
635 char args[255], name[255];
636 int ret;
637
638 snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s"
639 ":channel_layout=0x%"PRIx64,
640 1, ist->st->codec->sample_rate,
641 ist->st->codec->sample_rate,
642 av_get_sample_fmt_name(ist->st->codec->sample_fmt),
643 ist->st->codec->channel_layout);
644 snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
645 ist->file_index, ist->st->index);
646
647 if ((ret = avfilter_graph_create_filter(&ifilter->filter, filter,
648 name, args, NULL,
649 fg->graph)) < 0)
650 return ret;
651
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
652 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do { \
653 AVFilterContext *filt_ctx; \
654 \
655 av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
656 "similarly to -af " filter_name "=%s.\n", arg); \
657 \
658 snprintf(name, sizeof(name), "graph %d %s for input stream %d:%d", \
659 fg->index, filter_name, ist->file_index, ist->st->index); \
660 ret = avfilter_graph_create_filter(&filt_ctx, \
661 avfilter_get_by_name(filter_name), \
662 name, arg, NULL, fg->graph); \
663 if (ret < 0) \
664 return ret; \
665 \
666 ret = avfilter_link(filt_ctx, 0, first_filter, pad_idx); \
667 if (ret < 0) \
668 return ret; \
669 \
670 first_filter = filt_ctx; \
671 } while (0)
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
672
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
673 if (audio_sync_method > 0) {
674 char args[256] = {0};
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
675
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
676 av_strlcatf(args, sizeof(args), "min_comp=0.001:min_hard_comp=%f", audio_drift_threshold);
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
677 if (audio_sync_method > 1)
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
678 av_strlcatf(args, sizeof(args), ":max_soft_comp=%f", audio_sync_method/(double)ist->st->codec->sample_rate);
679 AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
680 }
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
681
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
682 // if (ost->audio_channels_mapped) {
683 // int i;
684 // AVBPrint pan_buf;
685 // av_bprint_init(&pan_buf, 256, 8192);
686 // av_bprintf(&pan_buf, "0x%"PRIx64,
687 // av_get_default_channel_layout(ost->audio_channels_mapped));
688 // for (i = 0; i < ost->audio_channels_mapped; i++)
689 // if (ost->audio_channels_map[i] != -1)
690 // av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
691 // AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
692 // av_bprint_finalize(&pan_buf, NULL);
693 // }
694
695 if (audio_volume != 256) {
696 char args[256];
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
697
11a1033 @michaelni Merge remote-tracking branch 'qatar/master'
michaelni authored
698 snprintf(args, sizeof(args), "%f", audio_volume / 256.);
699 AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
fe2147e @elenril avconv: split configuring filter configuration to a separate file.
elenril authored
700 }
701 if ((ret = avfilter_link(ifilter->filter, 0, first_filter, pad_idx)) < 0)
702 return ret;
703
704 return 0;
705 }
706
707 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
708 AVFilterInOut *in)
709 {
710 av_freep(&ifilter->name);
711 DESCRIBE_FILTER_LINK(ifilter, in, 1);
712
713 switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
714 case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
715 case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
716 default: av_assert0(0);
717 }
718 }
719
720 int configure_filtergraph(FilterGraph *fg)
721 {
722 AVFilterInOut *inputs, *outputs, *cur;
723 int ret, i, init = !fg->graph, simple = !fg->graph_desc;
724 const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
725 fg->graph_desc;
726
727 avfilter_graph_free(&fg->graph);
728 if (!(fg->graph = avfilter_graph_alloc()))
729 return AVERROR(ENOMEM);
730
731 if (simple) {
732 OutputStream *ost = fg->outputs[0]->ost;
733 char args[255];
734 snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
735 fg->graph->scale_sws_opts = av_strdup(args);
736 }
737
738 if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
739 return ret;
740
741 if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
742 av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
743 "exactly one input and output.\n", graph_desc);
744 return AVERROR(EINVAL);
745 }
746
747 for (cur = inputs; !simple && init && cur; cur = cur->next)
748 init_input_filter(fg, cur);
749
750 for (cur = inputs, i = 0; cur; cur = cur->next, i++)
751 if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
752 return ret;
753 avfilter_inout_free(&inputs);
754
755 if (!init || simple) {
756 /* we already know the mappings between lavfi outputs and output streams,
757 * so we can finish the setup */
758 for (cur = outputs, i = 0; cur; cur = cur->next, i++)
759 configure_output_filter(fg, fg->outputs[i], cur);
760 avfilter_inout_free(&outputs);
761
762 if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
763 return ret;
764 } else {
765 /* wait until output mappings are processed */
766 for (cur = outputs; cur;) {
767 fg->outputs = grow_array(fg->outputs, sizeof(*fg->outputs),
768 &fg->nb_outputs, fg->nb_outputs + 1);
769 if (!(fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]))))
770 exit_program(1);
771 fg->outputs[fg->nb_outputs - 1]->graph = fg;
772 fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
773 cur = cur->next;
774 fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
775 }
776 }
777
778 return 0;
779 }
780
781 int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
782 {
783 int i;
784 for (i = 0; i < fg->nb_inputs; i++)
785 if (fg->inputs[i]->ist == ist)
786 return 1;
787 return 0;
788 }
789
Something went wrong with that request. Please try again.