diff options
Diffstat (limited to 'libmpcodecs/dec_audio.c')
| -rw-r--r-- | libmpcodecs/dec_audio.c | 462 |
1 files changed, 0 insertions, 462 deletions
diff --git a/libmpcodecs/dec_audio.c b/libmpcodecs/dec_audio.c deleted file mode 100644 index 2602352e52..0000000000 --- a/libmpcodecs/dec_audio.c +++ /dev/null @@ -1,462 +0,0 @@ -/* - * This file is part of MPlayer. - * - * MPlayer is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * MPlayer is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with MPlayer; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <assert.h> - -#include "config.h" -#include "mp_msg.h" -#include "bstr.h" - -#include "stream/stream.h" -#include "libmpdemux/demuxer.h" - -#include "codec-cfg.h" -#include "libmpdemux/stheader.h" - -#include "dec_audio.h" -#include "ad.h" -#include "libaf/format.h" - -#include "libaf/af.h" - -int fakemono = 0; - -struct af_cfg af_cfg = { 1, NULL }; // Configuration for audio filters - -void afm_help(void) -{ - int i; - mp_tmsg(MSGT_DECAUDIO, MSGL_INFO, "Available (compiled-in) audio codec families/drivers:\n"); - mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_AUDIO_DRIVERS\n"); - mp_msg(MSGT_DECAUDIO, MSGL_INFO, " afm: info: (comment)\n"); - for (i = 0; mpcodecs_ad_drivers[i] != NULL; i++) - if (mpcodecs_ad_drivers[i]->info->comment - && mpcodecs_ad_drivers[i]->info->comment[0]) - mp_msg(MSGT_DECAUDIO, MSGL_INFO, "%9s %s (%s)\n", - mpcodecs_ad_drivers[i]->info->short_name, - mpcodecs_ad_drivers[i]->info->name, - mpcodecs_ad_drivers[i]->info->comment); - else - mp_msg(MSGT_DECAUDIO, MSGL_INFO, "%9s %s\n", - mpcodecs_ad_drivers[i]->info->short_name, - mpcodecs_ad_drivers[i]->info->name); -} - -static int init_audio_codec(sh_audio_t *sh_audio) -{ - assert(!sh_audio->initialized); - resync_audio_stream(sh_audio); - if ((af_cfg.force & AF_INIT_FORMAT_MASK) == AF_INIT_FLOAT) { - int fmt = AF_FORMAT_FLOAT_NE; - if (sh_audio->ad_driver->control(sh_audio, ADCTRL_QUERY_FORMAT, - &fmt) == CONTROL_TRUE) { - sh_audio->sample_format = fmt; - sh_audio->samplesize = 4; - } - } - sh_audio->audio_out_minsize = 8192; // default, preinit() may change it - if (!sh_audio->ad_driver->preinit(sh_audio)) { - mp_tmsg(MSGT_DECAUDIO, MSGL_ERR, "ADecoder preinit failed :(\n"); - return 0; - } - - /* allocate audio in buffer: */ - if (sh_audio->audio_in_minsize > 0) { - sh_audio->a_in_buffer_size = sh_audio->audio_in_minsize; - mp_tmsg(MSGT_DECAUDIO, MSGL_V, "dec_audio: Allocating %d bytes for input buffer.\n", - sh_audio->a_in_buffer_size); - sh_audio->a_in_buffer = av_mallocz(sh_audio->a_in_buffer_size); - } - - const int base_size = 65536; - // At least 64 KiB plus rounding up to next decodable unit size - sh_audio->a_buffer_size = base_size + sh_audio->audio_out_minsize; - - mp_tmsg(MSGT_DECAUDIO, MSGL_V, "dec_audio: Allocating %d + %d = %d bytes for output buffer.\n", - sh_audio->audio_out_minsize, base_size, sh_audio->a_buffer_size); - - sh_audio->a_buffer = av_mallocz(sh_audio->a_buffer_size); - if (!sh_audio->a_buffer) - abort(); - sh_audio->a_buffer_len = 0; - - if (!sh_audio->ad_driver->init(sh_audio)) { - mp_tmsg(MSGT_DECAUDIO, MSGL_V, "ADecoder init failed :(\n"); - uninit_audio(sh_audio); // free buffers - return 0; - } - - sh_audio->initialized = 1; - - if (!sh_audio->channels || !sh_audio->samplerate) { - mp_tmsg(MSGT_DECAUDIO, MSGL_ERR, "Audio decoder did not specify " - "audio format!\n"); - uninit_audio(sh_audio); // free buffers - return 0; - } - - if (!sh_audio->o_bps) - sh_audio->o_bps = sh_audio->channels * sh_audio->samplerate - * sh_audio->samplesize; - return 1; -} - -static int init_audio(sh_audio_t *sh_audio, char *codecname, char *afm, - int status, stringset_t *selected) -{ - int force = 0; - if (codecname && codecname[0] == '+') { - codecname = &codecname[1]; - force = 1; - } - sh_audio->codec = NULL; - while (1) { - const ad_functions_t *mpadec; - sh_audio->ad_driver = 0; - if (!(sh_audio->codec = find_audio_codec(sh_audio->format, - NULL, - sh_audio->codec, force))) - break; - // ok we found one codec - if (stringset_test(selected, sh_audio->codec->name)) - continue; // already tried & failed - if (codecname && strcmp(sh_audio->codec->name, codecname)) - continue; // -ac - if (afm && strcmp(sh_audio->codec->drv, afm)) - continue; // afm doesn't match - if (!force && sh_audio->codec->status < status) - continue; // too unstable - stringset_add(selected, sh_audio->codec->name); // tagging it - // ok, it matches all rules, let's find the driver! - int i; - for (i = 0; mpcodecs_ad_drivers[i] != NULL; i++) - if (!strcmp(mpcodecs_ad_drivers[i]->info->short_name, - sh_audio->codec->drv)) - break; - mpadec = mpcodecs_ad_drivers[i]; - if (!mpadec) { // driver not available (==compiled in) - mp_tmsg(MSGT_DECAUDIO, MSGL_ERR, - "Requested audio codec family [%s] (afm=%s) not available.\nEnable it at compilation.\n", - sh_audio->codec->name, sh_audio->codec->drv); - continue; - } - // it's available, let's try to init! - // init() - mp_tmsg(MSGT_DECAUDIO, MSGL_V, "Opening audio decoder: [%s] %s\n", - mpadec->info->short_name, mpadec->info->name); - sh_audio->ad_driver = mpadec; - if (!init_audio_codec(sh_audio)) { - mp_tmsg(MSGT_DECAUDIO, MSGL_WARN, "Audio decoder init failed for " - "codecs.conf entry \"%s\".\n", sh_audio->codec->name); - continue; // try next... - } - // Yeah! We got it! - return 1; - } - return 0; -} - -int init_best_audio_codec(sh_audio_t *sh_audio, char **audio_codec_list, - char **audio_fm_list) -{ - stringset_t selected; - char *ac_l_default[2] = { "", (char *) NULL }; - // hack: - if (!audio_codec_list) - audio_codec_list = ac_l_default; - // Go through the codec.conf and find the best codec... - sh_audio->initialized = 0; - stringset_init(&selected); - while (!sh_audio->initialized && *audio_codec_list) { - char *audio_codec = *(audio_codec_list++); - if (audio_codec[0]) { - if (audio_codec[0] == '-') { - // disable this codec: - stringset_add(&selected, audio_codec + 1); - } else { - // forced codec by name: - mp_tmsg(MSGT_DECAUDIO, MSGL_INFO, "Forced audio codec: %s\n", - audio_codec); - init_audio(sh_audio, audio_codec, NULL, -1, &selected); - } - } else { - int status; - // try in stability order: UNTESTED, WORKING, BUGGY. - // never try CRASHING. - if (audio_fm_list) { - char **fmlist = audio_fm_list; - // try first the preferred codec families: - while (!sh_audio->initialized && *fmlist) { - char *audio_fm = *(fmlist++); - mp_tmsg(MSGT_DECAUDIO, MSGL_INFO, "Trying to force audio codec driver family %s...\n", - audio_fm); - for (status = CODECS_STATUS__MAX; - status >= CODECS_STATUS__MIN; --status) - if (init_audio(sh_audio, NULL, audio_fm, status, &selected)) - break; - } - } - if (!sh_audio->initialized) - for (status = CODECS_STATUS__MAX; status >= CODECS_STATUS__MIN; - --status) - if (init_audio(sh_audio, NULL, NULL, status, &selected)) - break; - } - } - stringset_free(&selected); - - if (!sh_audio->initialized) { - mp_tmsg(MSGT_DECAUDIO, MSGL_ERR, "Cannot find codec for audio format 0x%X.\n", - sh_audio->format); - return 0; // failed - } - - mp_tmsg(MSGT_DECAUDIO, MSGL_INFO, "Selected audio codec: %s [%s]\n", - sh_audio->codecname ? sh_audio->codecname : sh_audio->codec->info, - sh_audio->ad_driver->info->print_name ? - sh_audio->ad_driver->info->print_name : - sh_audio->ad_driver->info->short_name); - mp_tmsg(MSGT_DECAUDIO, MSGL_V, - "Audio codecs.conf entry: %s (%s) afm: %s\n", - sh_audio->codec->name, sh_audio->codec->info, sh_audio->codec->drv); - mp_msg(MSGT_DECAUDIO, MSGL_V, - "AUDIO: %d Hz, %d ch, %s, %3.1f kbit/%3.2f%% (ratio: %d->%d)\n", - sh_audio->samplerate, sh_audio->channels, - af_fmt2str_short(sh_audio->sample_format), - sh_audio->i_bps * 8 * 0.001, - ((float) sh_audio->i_bps / sh_audio->o_bps) * 100.0, - sh_audio->i_bps, sh_audio->o_bps); - mp_msg(MSGT_IDENTIFY, MSGL_INFO, - "ID_AUDIO_BITRATE=%d\nID_AUDIO_RATE=%d\n" "ID_AUDIO_NCH=%d\n", - sh_audio->i_bps * 8, sh_audio->samplerate, sh_audio->channels); - - return 1; // success -} - -void uninit_audio(sh_audio_t *sh_audio) -{ - if (sh_audio->afilter) { - mp_msg(MSGT_DECAUDIO, MSGL_V, "Uninit audio filters...\n"); - af_uninit(sh_audio->afilter); - free(sh_audio->afilter); - sh_audio->afilter = NULL; - } - if (sh_audio->initialized) { - mp_tmsg(MSGT_DECAUDIO, MSGL_V, "Uninit audio: %s\n", - sh_audio->codec->drv); - sh_audio->ad_driver->uninit(sh_audio); - sh_audio->initialized = 0; - } - av_freep(&sh_audio->a_buffer); - av_freep(&sh_audio->a_in_buffer); -} - - -int init_audio_filters(sh_audio_t *sh_audio, int in_samplerate, - int *out_samplerate, int *out_channels, int *out_format) -{ - struct af_stream *afs = sh_audio->afilter; - if (!afs) { - afs = calloc(1, sizeof(struct af_stream)); - afs->opts = sh_audio->opts; - } - // input format: same as codec's output format: - afs->input.rate = in_samplerate; - afs->input.nch = sh_audio->channels; - afs->input.format = sh_audio->sample_format; - af_fix_parameters(&(afs->input)); - - // output format: same as ao driver's input format (if missing, fallback to input) - afs->output.rate = *out_samplerate; - afs->output.nch = *out_channels; - afs->output.format = *out_format; - af_fix_parameters(&(afs->output)); - - // filter config: - memcpy(&afs->cfg, &af_cfg, sizeof(struct af_cfg)); - - mp_tmsg(MSGT_DECAUDIO, MSGL_V, "Building audio filter chain for %dHz/%dch/%s -> %dHz/%dch/%s...\n", - afs->input.rate, afs->input.nch, - af_fmt2str_short(afs->input.format), afs->output.rate, - afs->output.nch, af_fmt2str_short(afs->output.format)); - - // let's autoprobe it! - if (0 != af_init(afs)) { - sh_audio->afilter = NULL; - free(afs); - return 0; // failed :( - } - - *out_samplerate = afs->output.rate; - *out_channels = afs->output.nch; - *out_format = afs->output.format; - - // ok! - sh_audio->afilter = (void *) afs; - return 1; -} - -static void set_min_out_buffer_size(struct bstr *outbuf, int len) -{ - size_t oldlen = talloc_get_size(outbuf->start); - if (oldlen < len) { - assert(outbuf->start); // talloc context should be already set - mp_msg(MSGT_DECAUDIO, MSGL_V, "Increasing filtered audio buffer size " - "from %zd to %d\n", oldlen, len); - outbuf->start = talloc_realloc_size(NULL, outbuf->start, len); - } -} - -static int filter_n_bytes(sh_audio_t *sh, struct bstr *outbuf, int len) -{ - assert(len-1 + sh->audio_out_minsize <= sh->a_buffer_size); - - int error = 0; - - // Decode more bytes if needed - int old_samplerate = sh->samplerate; - int old_channels = sh->channels; - int old_sample_format = sh->sample_format; - while (sh->a_buffer_len < len) { - unsigned char *buf = sh->a_buffer + sh->a_buffer_len; - int minlen = len - sh->a_buffer_len; - int maxlen = sh->a_buffer_size - sh->a_buffer_len; - int ret = sh->ad_driver->decode_audio(sh, buf, minlen, maxlen); - int format_change = sh->samplerate != old_samplerate - || sh->channels != old_channels - || sh->sample_format != old_sample_format; - if (ret <= 0 || format_change) { - error = format_change ? -2 : -1; - // samples from format-changing call get discarded too - len = sh->a_buffer_len; - break; - } - sh->a_buffer_len += ret; - } - - // Filter - struct mp_audio filter_input = { - .audio = sh->a_buffer, - .len = len, - .rate = sh->samplerate, - .nch = sh->channels, - .format = sh->sample_format - }; - af_fix_parameters(&filter_input); - struct mp_audio *filter_output = af_play(sh->afilter, &filter_input); - if (!filter_output) - return -1; - set_min_out_buffer_size(outbuf, outbuf->len + filter_output->len); - memcpy(outbuf->start + outbuf->len, filter_output->audio, - filter_output->len); - outbuf->len += filter_output->len; - - // remove processed data from decoder buffer: - sh->a_buffer_len -= len; - memmove(sh->a_buffer, sh->a_buffer + len, sh->a_buffer_len); - - return error; -} - -/* Try to get at least minlen decoded+filtered bytes in outbuf - * (total length including possible existing data). - * Return 0 on success, -1 on error/EOF (not distinguished). - * In the former case outbuf->len is always >= minlen on return. - * In case of EOF/error it might or might not be. - * Outbuf.start must be talloc-allocated, and will be reallocated - * if needed to fit all filter output. */ -int decode_audio(sh_audio_t *sh_audio, struct bstr *outbuf, int minlen) -{ - // Indicates that a filter seems to be buffering large amounts of data - int huge_filter_buffer = 0; - // Decoded audio must be cut at boundaries of this many bytes - int unitsize = sh_audio->channels * sh_audio->samplesize * 16; - - /* Filter output size will be about filter_multiplier times input size. - * If some filter buffers audio in big blocks this might only hold - * as average over time. */ - double filter_multiplier = af_calc_filter_multiplier(sh_audio->afilter); - - /* If the decoder set audio_out_minsize then it can do the equivalent of - * "while (output_len < target_len) output_len += audio_out_minsize;", - * so we must guarantee there is at least audio_out_minsize-1 bytes - * more space in the output buffer than the minimum length we try to - * decode. */ - int max_decode_len = sh_audio->a_buffer_size - sh_audio->audio_out_minsize; - if (!unitsize) - return -1; - max_decode_len -= max_decode_len % unitsize; - - while (outbuf->len < minlen) { - int declen = (minlen - outbuf->len) / filter_multiplier - + (unitsize << 5); // some extra for possible filter buffering - if (huge_filter_buffer) - /* Some filter must be doing significant buffering if the estimated - * input length didn't produce enough output from filters. - * Feed the filters 2k bytes at a time until we have enough output. - * Very small amounts could make filtering inefficient while large - * amounts can make MPlayer demux the file unnecessarily far ahead - * to get audio data and buffer video frames in memory while doing - * so. However the performance impact of either is probably not too - * significant as long as the value is not completely insane. */ - declen = 2000; - declen -= declen % unitsize; - if (declen > max_decode_len) - declen = max_decode_len; - else - /* if this iteration does not fill buffer, we must have lots - * of buffering in filters */ - huge_filter_buffer = 1; - int res = filter_n_bytes(sh_audio, outbuf, declen); - if (res < 0) - return res; - } - return 0; -} - -void decode_audio_prepend_bytes(struct bstr *outbuf, int count, int byte) -{ - set_min_out_buffer_size(outbuf, outbuf->len + count); - memmove(outbuf->start + count, outbuf->start, outbuf->len); - memset(outbuf->start, byte, count); - outbuf->len += count; -} - - -void resync_audio_stream(sh_audio_t *sh_audio) -{ - sh_audio->a_in_buffer_len = 0; // clear audio input buffer - sh_audio->pts = MP_NOPTS_VALUE; - if (!sh_audio->initialized) - return; - sh_audio->ad_driver->control(sh_audio, ADCTRL_RESYNC_STREAM, NULL); -} - -void skip_audio_frame(sh_audio_t *sh_audio) -{ - if (!sh_audio->initialized) - return; - if (sh_audio->ad_driver->control(sh_audio, ADCTRL_SKIP_FRAME, NULL) == - CONTROL_TRUE) - return; - // default skip code: - ds_fill_buffer(sh_audio->ds); // skip block -} |