2 * This file is part of MPlayer.
4 * MPlayer is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * MPlayer is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
28 #include "stream/stream.h"
29 #include "libmpdemux/demuxer.h"
31 #include "codec-cfg.h"
32 #include "libmpdemux/stheader.h"
34 #include "dec_audio.h"
36 #include "libaf/af_format.h"
40 #ifdef CONFIG_DYNAMIC_PLUGINS
44 #ifdef CONFIG_FAKE_MONO
48 /* used for ac3surround decoder - set using -channels option */
49 int audio_output_channels
= 2;
50 af_cfg_t af_cfg
= { 1, NULL
}; // Configuration for audio filters
55 mp_msg(MSGT_DECAUDIO
, MSGL_INFO
, MSGTR_AvailableAudioFm
);
56 mp_msg(MSGT_IDENTIFY
, MSGL_INFO
, "ID_AUDIO_DRIVERS\n");
57 mp_msg(MSGT_DECAUDIO
, MSGL_INFO
, " afm: info: (comment)\n");
58 for (i
= 0; mpcodecs_ad_drivers
[i
] != NULL
; i
++)
59 if (mpcodecs_ad_drivers
[i
]->info
->comment
60 && mpcodecs_ad_drivers
[i
]->info
->comment
[0])
61 mp_msg(MSGT_DECAUDIO
, MSGL_INFO
, "%9s %s (%s)\n",
62 mpcodecs_ad_drivers
[i
]->info
->short_name
,
63 mpcodecs_ad_drivers
[i
]->info
->name
,
64 mpcodecs_ad_drivers
[i
]->info
->comment
);
66 mp_msg(MSGT_DECAUDIO
, MSGL_INFO
, "%9s %s\n",
67 mpcodecs_ad_drivers
[i
]->info
->short_name
,
68 mpcodecs_ad_drivers
[i
]->info
->name
);
71 static int init_audio_codec(sh_audio_t
*sh_audio
)
73 if ((af_cfg
.force
& AF_INIT_FORMAT_MASK
) == AF_INIT_FLOAT
) {
74 int fmt
= AF_FORMAT_FLOAT_NE
;
75 if (sh_audio
->ad_driver
->control(sh_audio
, ADCTRL_QUERY_FORMAT
,
76 &fmt
) == CONTROL_TRUE
) {
77 sh_audio
->sample_format
= fmt
;
78 sh_audio
->samplesize
= 4;
81 if (!sh_audio
->ad_driver
->preinit(sh_audio
)) {
82 mp_msg(MSGT_DECAUDIO
, MSGL_ERR
, MSGTR_ADecoderPreinitFailed
);
86 /* allocate audio in buffer: */
87 if (sh_audio
->audio_in_minsize
> 0) {
88 sh_audio
->a_in_buffer_size
= sh_audio
->audio_in_minsize
;
89 mp_msg(MSGT_DECAUDIO
, MSGL_V
, MSGTR_AllocatingBytesForInputBuffer
,
90 sh_audio
->a_in_buffer_size
);
91 sh_audio
->a_in_buffer
= av_mallocz(sh_audio
->a_in_buffer_size
);
92 sh_audio
->a_in_buffer_len
= 0;
95 sh_audio
->a_buffer_size
= sh_audio
->audio_out_minsize
+ MAX_OUTBURST
;
97 mp_msg(MSGT_DECAUDIO
, MSGL_V
, MSGTR_AllocatingBytesForOutputBuffer
,
98 sh_audio
->audio_out_minsize
, MAX_OUTBURST
, sh_audio
->a_buffer_size
);
100 sh_audio
->a_buffer
= av_mallocz(sh_audio
->a_buffer_size
);
101 if (!sh_audio
->a_buffer
) {
102 mp_msg(MSGT_DECAUDIO
, MSGL_ERR
, MSGTR_CantAllocAudioBuf
);
105 sh_audio
->a_buffer_len
= 0;
107 if (!sh_audio
->ad_driver
->init(sh_audio
)) {
108 mp_msg(MSGT_DECAUDIO
, MSGL_WARN
, MSGTR_ADecoderInitFailed
);
109 uninit_audio(sh_audio
); // free buffers
113 sh_audio
->initialized
= 1;
115 if (!sh_audio
->channels
|| !sh_audio
->samplerate
) {
116 mp_msg(MSGT_DECAUDIO
, MSGL_WARN
, MSGTR_UnknownAudio
);
117 uninit_audio(sh_audio
); // free buffers
121 if (!sh_audio
->o_bps
)
122 sh_audio
->o_bps
= sh_audio
->channels
* sh_audio
->samplerate
123 * sh_audio
->samplesize
;
125 mp_msg(MSGT_DECAUDIO
, MSGL_INFO
,
126 "AUDIO: %d Hz, %d ch, %s, %3.1f kbit/%3.2f%% (ratio: %d->%d)\n",
127 sh_audio
->samplerate
, sh_audio
->channels
,
128 af_fmt2str_short(sh_audio
->sample_format
),
129 sh_audio
->i_bps
* 8 * 0.001,
130 ((float) sh_audio
->i_bps
/ sh_audio
->o_bps
) * 100.0,
131 sh_audio
->i_bps
, sh_audio
->o_bps
);
132 mp_msg(MSGT_IDENTIFY
, MSGL_INFO
,
133 "ID_AUDIO_BITRATE=%d\nID_AUDIO_RATE=%d\n" "ID_AUDIO_NCH=%d\n",
134 sh_audio
->i_bps
* 8, sh_audio
->samplerate
, sh_audio
->channels
);
136 sh_audio
->a_out_buffer_size
= 0;
137 sh_audio
->a_out_buffer
= NULL
;
138 sh_audio
->a_out_buffer_len
= 0;
143 static int init_audio(sh_audio_t
*sh_audio
, char *codecname
, char *afm
,
144 int status
, stringset_t
*selected
)
146 unsigned int orig_fourcc
= sh_audio
->wf
? sh_audio
->wf
->wFormatTag
: 0;
148 if (codecname
&& codecname
[0] == '+') {
149 codecname
= &codecname
[1];
152 sh_audio
->codec
= NULL
;
154 ad_functions_t
*mpadec
;
156 sh_audio
->ad_driver
= 0;
157 // restore original fourcc:
159 sh_audio
->wf
->wFormatTag
= i
= orig_fourcc
;
160 if (!(sh_audio
->codec
= find_audio_codec(sh_audio
->format
,
161 sh_audio
->wf
? (&i
) : NULL
,
162 sh_audio
->codec
, force
)))
165 sh_audio
->wf
->wFormatTag
= i
;
166 // ok we found one codec
167 if (stringset_test(selected
, sh_audio
->codec
->name
))
168 continue; // already tried & failed
169 if (codecname
&& strcmp(sh_audio
->codec
->name
, codecname
))
171 if (afm
&& strcmp(sh_audio
->codec
->drv
, afm
))
172 continue; // afm doesn't match
173 if (!force
&& sh_audio
->codec
->status
< status
)
174 continue; // too unstable
175 stringset_add(selected
, sh_audio
->codec
->name
); // tagging it
176 // ok, it matches all rules, let's find the driver!
177 for (i
= 0; mpcodecs_ad_drivers
[i
] != NULL
; i
++)
178 if (!strcmp(mpcodecs_ad_drivers
[i
]->info
->short_name
,
179 sh_audio
->codec
->drv
))
181 mpadec
= mpcodecs_ad_drivers
[i
];
182 #ifdef CONFIG_DYNAMIC_PLUGINS
184 /* try to open shared decoder plugin */
187 ad_functions_t
*funcs_sym
;
191 strlen(MPLAYER_LIBDIR
) + strlen(sh_audio
->codec
->drv
) + 16;
192 buf
= malloc(buf_len
);
195 snprintf(buf
, buf_len
, "%s/mplayer/ad_%s.so", MPLAYER_LIBDIR
,
196 sh_audio
->codec
->drv
);
197 mp_msg(MSGT_DECAUDIO
, MSGL_DBG2
,
198 "Trying to open external plugin: %s\n", buf
);
199 sh_audio
->dec_handle
= dlopen(buf
, RTLD_LAZY
);
200 if (!sh_audio
->dec_handle
)
202 snprintf(buf
, buf_len
, "mpcodecs_ad_%s", sh_audio
->codec
->drv
);
203 funcs_sym
= dlsym(sh_audio
->dec_handle
, buf
);
204 if (!funcs_sym
|| !funcs_sym
->info
|| !funcs_sym
->preinit
205 || !funcs_sym
->init
|| !funcs_sym
->uninit
206 || !funcs_sym
->control
|| !funcs_sym
->decode_audio
)
208 info_sym
= funcs_sym
->info
;
209 if (strcmp(info_sym
->short_name
, sh_audio
->codec
->drv
))
213 mp_msg(MSGT_DECAUDIO
, MSGL_V
,
214 "Using external decoder plugin (%s/mplayer/ad_%s.so)!\n",
215 MPLAYER_LIBDIR
, sh_audio
->codec
->drv
);
218 if (!mpadec
) { // driver not available (==compiled in)
219 mp_msg(MSGT_DECAUDIO
, MSGL_ERR
,
220 MSGTR_AudioCodecFamilyNotAvailableStr
,
221 sh_audio
->codec
->name
, sh_audio
->codec
->drv
);
224 // it's available, let's try to init!
226 mp_msg(MSGT_DECAUDIO
, MSGL_INFO
, MSGTR_OpeningAudioDecoder
,
227 mpadec
->info
->short_name
, mpadec
->info
->name
);
228 sh_audio
->ad_driver
= mpadec
;
229 if (!init_audio_codec(sh_audio
)) {
230 mp_msg(MSGT_DECAUDIO
, MSGL_INFO
, MSGTR_ADecoderInitFailed
);
231 continue; // try next...
239 int init_best_audio_codec(sh_audio_t
*sh_audio
, char **audio_codec_list
,
240 char **audio_fm_list
)
242 stringset_t selected
;
243 char *ac_l_default
[2] = { "", (char *) NULL
};
245 if (!audio_codec_list
)
246 audio_codec_list
= ac_l_default
;
247 // Go through the codec.conf and find the best codec...
248 sh_audio
->initialized
= 0;
249 stringset_init(&selected
);
250 while (!sh_audio
->initialized
&& *audio_codec_list
) {
251 char *audio_codec
= *(audio_codec_list
++);
252 if (audio_codec
[0]) {
253 if (audio_codec
[0] == '-') {
254 // disable this codec:
255 stringset_add(&selected
, audio_codec
+ 1);
257 // forced codec by name:
258 mp_msg(MSGT_DECAUDIO
, MSGL_INFO
, MSGTR_ForcedAudioCodec
,
260 init_audio(sh_audio
, audio_codec
, NULL
, -1, &selected
);
264 // try in stability order: UNTESTED, WORKING, BUGGY.
265 // never try CRASHING.
267 char **fmlist
= audio_fm_list
;
268 // try first the preferred codec families:
269 while (!sh_audio
->initialized
&& *fmlist
) {
270 char *audio_fm
= *(fmlist
++);
271 mp_msg(MSGT_DECAUDIO
, MSGL_INFO
, MSGTR_TryForceAudioFmtStr
,
273 for (status
= CODECS_STATUS__MAX
;
274 status
>= CODECS_STATUS__MIN
; --status
)
275 if (init_audio(sh_audio
, NULL
, audio_fm
, status
, &selected
))
279 if (!sh_audio
->initialized
)
280 for (status
= CODECS_STATUS__MAX
; status
>= CODECS_STATUS__MIN
;
282 if (init_audio(sh_audio
, NULL
, NULL
, status
, &selected
))
286 stringset_free(&selected
);
288 if (!sh_audio
->initialized
) {
289 mp_msg(MSGT_DECAUDIO
, MSGL_ERR
, MSGTR_CantFindAudioCodec
,
294 mp_msg(MSGT_DECAUDIO
, MSGL_INFO
, MSGTR_SelectedAudioCodec
,
295 sh_audio
->codec
->name
, sh_audio
->codec
->drv
, sh_audio
->codec
->info
);
299 void uninit_audio(sh_audio_t
*sh_audio
)
301 if (sh_audio
->afilter
) {
302 mp_msg(MSGT_DECAUDIO
, MSGL_V
, "Uninit audio filters...\n");
303 af_uninit(sh_audio
->afilter
);
304 free(sh_audio
->afilter
);
305 sh_audio
->afilter
= NULL
;
307 if (sh_audio
->initialized
) {
308 mp_msg(MSGT_DECAUDIO
, MSGL_V
, MSGTR_UninitAudioStr
,
309 sh_audio
->codec
->drv
);
310 sh_audio
->ad_driver
->uninit(sh_audio
);
311 #ifdef CONFIG_DYNAMIC_PLUGINS
312 if (sh_audio
->dec_handle
)
313 dlclose(sh_audio
->dec_handle
);
315 sh_audio
->initialized
= 0;
317 free(sh_audio
->a_out_buffer
);
318 sh_audio
->a_out_buffer
= NULL
;
319 sh_audio
->a_out_buffer_size
= 0;
320 av_freep(&sh_audio
->a_buffer
);
321 av_freep(&sh_audio
->a_in_buffer
);
325 int init_audio_filters(sh_audio_t
*sh_audio
, int in_samplerate
,
326 int *out_samplerate
, int *out_channels
, int *out_format
)
328 af_stream_t
*afs
= sh_audio
->afilter
;
330 afs
= malloc(sizeof(af_stream_t
));
331 memset(afs
, 0, sizeof(af_stream_t
));
333 // input format: same as codec's output format:
334 afs
->input
.rate
= in_samplerate
;
335 afs
->input
.nch
= sh_audio
->channels
;
336 afs
->input
.format
= sh_audio
->sample_format
;
337 af_fix_parameters(&(afs
->input
));
339 // output format: same as ao driver's input format (if missing, fallback to input)
340 afs
->output
.rate
= *out_samplerate
;
341 afs
->output
.nch
= *out_channels
;
342 afs
->output
.format
= *out_format
;
343 af_fix_parameters(&(afs
->output
));
346 memcpy(&afs
->cfg
, &af_cfg
, sizeof(af_cfg_t
));
348 mp_msg(MSGT_DECAUDIO
, MSGL_V
, MSGTR_BuildingAudioFilterChain
,
349 afs
->input
.rate
, afs
->input
.nch
,
350 af_fmt2str_short(afs
->input
.format
), afs
->output
.rate
,
351 afs
->output
.nch
, af_fmt2str_short(afs
->output
.format
));
353 // let's autoprobe it!
354 if (0 != af_init(afs
)) {
355 sh_audio
->afilter
= NULL
;
357 return 0; // failed :(
360 *out_samplerate
= afs
->output
.rate
;
361 *out_channels
= afs
->output
.nch
;
362 *out_format
= afs
->output
.format
;
364 sh_audio
->a_out_buffer_len
= 0;
367 sh_audio
->afilter
= (void *) afs
;
371 static int filter_n_bytes(sh_audio_t
*sh
, int len
)
375 af_data_t filter_input
= {
376 .audio
= sh
->a_buffer
,
377 .rate
= sh
->samplerate
,
379 .format
= sh
->sample_format
381 af_data_t
*filter_output
;
383 assert(len
-1 + sh
->audio_out_minsize
<= sh
->a_buffer_size
);
385 // Decode more bytes if needed
386 while (sh
->a_buffer_len
< len
) {
387 unsigned char *buf
= sh
->a_buffer
+ sh
->a_buffer_len
;
388 int minlen
= len
- sh
->a_buffer_len
;
389 int maxlen
= sh
->a_buffer_size
- sh
->a_buffer_len
;
390 int ret
= sh
->ad_driver
->decode_audio(sh
, buf
, minlen
, maxlen
);
393 len
= sh
->a_buffer_len
;
396 sh
->a_buffer_len
+= ret
;
399 filter_input
.len
= len
;
400 af_fix_parameters(&filter_input
);
401 filter_output
= af_play(sh
->afilter
, &filter_input
);
404 if (sh
->a_out_buffer_size
< sh
->a_out_buffer_len
+ filter_output
->len
) {
405 int newlen
= sh
->a_out_buffer_len
+ filter_output
->len
;
406 mp_msg(MSGT_DECAUDIO
, MSGL_V
, "Increasing filtered audio buffer size "
407 "from %d to %d\n", sh
->a_out_buffer_size
, newlen
);
408 sh
->a_out_buffer
= realloc(sh
->a_out_buffer
, newlen
);
409 sh
->a_out_buffer_size
= newlen
;
411 memcpy(sh
->a_out_buffer
+ sh
->a_out_buffer_len
, filter_output
->audio
,
413 sh
->a_out_buffer_len
+= filter_output
->len
;
415 // remove processed data from decoder buffer:
416 sh
->a_buffer_len
-= len
;
417 memmove(sh
->a_buffer
, sh
->a_buffer
+ len
, sh
->a_buffer_len
);
422 /* Try to get at least minlen decoded+filtered bytes in sh_audio->a_out_buffer
423 * (total length including possible existing data).
424 * Return 0 on success, -1 on error/EOF (not distinguished).
425 * In the former case sh_audio->a_out_buffer_len is always >= minlen
426 * on return. In case of EOF/error it might or might not be.
427 * Can reallocate sh_audio->a_out_buffer if needed to fit all filter output. */
428 int decode_audio(sh_audio_t
*sh_audio
, int minlen
)
430 // Indicates that a filter seems to be buffering large amounts of data
431 int huge_filter_buffer
= 0;
432 // Decoded audio must be cut at boundaries of this many bytes
433 int unitsize
= sh_audio
->channels
* sh_audio
->samplesize
* 16;
435 /* Filter output size will be about filter_multiplier times input size.
436 * If some filter buffers audio in big blocks this might only hold
437 * as average over time. */
438 double filter_multiplier
= af_calc_filter_multiplier(sh_audio
->afilter
);
440 /* If the decoder set audio_out_minsize then it can do the equivalent of
441 * "while (output_len < target_len) output_len += audio_out_minsize;",
442 * so we must guarantee there is at least audio_out_minsize-1 bytes
443 * more space in the output buffer than the minimum length we try to
445 int max_decode_len
= sh_audio
->a_buffer_size
- sh_audio
->audio_out_minsize
;
446 max_decode_len
-= max_decode_len
% unitsize
;
448 while (sh_audio
->a_out_buffer_len
< minlen
) {
449 int declen
= (minlen
- sh_audio
->a_out_buffer_len
) / filter_multiplier
450 + (unitsize
<< 5); // some extra for possible filter buffering
451 if (huge_filter_buffer
)
452 /* Some filter must be doing significant buffering if the estimated
453 * input length didn't produce enough output from filters.
454 * Feed the filters 2k bytes at a time until we have enough output.
455 * Very small amounts could make filtering inefficient while large
456 * amounts can make MPlayer demux the file unnecessarily far ahead
457 * to get audio data and buffer video frames in memory while doing
458 * so. However the performance impact of either is probably not too
459 * significant as long as the value is not completely insane. */
461 declen
-= declen
% unitsize
;
462 if (declen
> max_decode_len
)
463 declen
= max_decode_len
;
465 /* if this iteration does not fill buffer, we must have lots
466 * of buffering in filters */
467 huge_filter_buffer
= 1;
468 if (filter_n_bytes(sh_audio
, declen
) < 0)
474 void resync_audio_stream(sh_audio_t
*sh_audio
)
476 sh_audio
->a_buffer_len
= 0;
477 sh_audio
->a_out_buffer_len
= 0;
478 sh_audio
->a_in_buffer_len
= 0; // clear audio input buffer
479 if (!sh_audio
->initialized
)
481 sh_audio
->ad_driver
->control(sh_audio
, ADCTRL_RESYNC_STREAM
, NULL
);
484 void skip_audio_frame(sh_audio_t
*sh_audio
)
486 if (!sh_audio
->initialized
)
488 if (sh_audio
->ad_driver
->control(sh_audio
, ADCTRL_SKIP_FRAME
, NULL
) ==
491 // default skip code:
492 ds_fill_buffer(sh_audio
->ds
); // skip block