From 6e4d643f3c3d1e05688c6cc4f7af398acbda05cb Mon Sep 17 00:00:00 2001 From: reimar Date: Mon, 4 Oct 2004 15:10:33 +0000 Subject: removing ao_alsa9.c and ao_alsa1x.c as they are superseded by ao_alsa.c git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@13543 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libao2/ao_alsa1x.c | 1193 ---------------------------------------------------- libao2/ao_alsa9.c | 1180 --------------------------------------------------- libao2/audio_out.c | 5 + 3 files changed, 5 insertions(+), 2373 deletions(-) delete mode 100644 libao2/ao_alsa1x.c delete mode 100644 libao2/ao_alsa9.c (limited to 'libao2') diff --git a/libao2/ao_alsa1x.c b/libao2/ao_alsa1x.c deleted file mode 100644 index bc2040de34..0000000000 --- a/libao2/ao_alsa1x.c +++ /dev/null @@ -1,1193 +0,0 @@ -/* - ao_alsa1x - ALSA-1.x output plugin for MPlayer - - (C) Alex Beregszaszi - - modified for real alsa-0.9.0-support by Joy Winter - additional AC3 passthrough support by Andy Lo A Foe - 08/22/2002 iec958-init rewritten and merged with common init, joy - - Trivial port to ALSA 1.x API by Jindrich Makovicka - - Any bugreports regarding to this driver are welcome. -*/ - -#include -#include -#include -#include -#include -#include - -#include "../config.h" -#include "../mixer.h" - -#if HAVE_SYS_ASOUNDLIB_H -#include -#elif HAVE_ALSA_ASOUNDLIB_H -#include -#else -#error "asoundlib.h is not in sys/ or alsa/ - please bugreport" -#endif - -#include "audio_out.h" -#include "audio_out_internal.h" -#include "afmt.h" - -extern int verbose; - -static ao_info_t info = -{ - "ALSA-1.x audio output", - "alsa1x", - "Alex Beregszaszi, Joy Winter ", - "under developement" -}; - -LIBAO_EXTERN(alsa1x) - - -static snd_pcm_t *alsa_handler; -static snd_pcm_format_t alsa_format; -static snd_pcm_hw_params_t *alsa_hwparams; -static snd_pcm_sw_params_t *alsa_swparams; -static char *alsa_device; - -/* possible 4096, original 8192 - * was only needed for calculating chunksize? */ -static int alsa_fragsize = 4096; -/* 16 sets buffersize to 16 * chunksize is as default 1024 - * which seems to be good avarge for most situations - * so buffersize is 16384 frames by default */ -static int alsa_fragcount = 16; -static snd_pcm_uframes_t chunk_size = 1024; //is alsa_fragsize / 4 - -#define MIN_CHUNK_SIZE 1024 - -static size_t bits_per_sample, bytes_per_sample, bits_per_frame; -static size_t chunk_bytes; - -int ao_mmap = 0; -int ao_noblock = 0; -int first = 1; - -static int open_mode; -static int set_block_mode; -static int alsa_can_pause = 0; - -#define ALSA_DEVICE_SIZE 48 - -#undef BUFFERTIME -#define SET_CHUNKSIZE -//#define BUFFERTIME -//#undef SET_CHUNKSIZE -#undef USE_POLL - - -/* to set/get/query special features/parameters */ -static int control(int cmd, void *arg) -{ - switch(cmd) { - case AOCONTROL_QUERY_FORMAT: - return CONTROL_TRUE; -#ifndef WORDS_BIGENDIAN - case AOCONTROL_GET_VOLUME: - case AOCONTROL_SET_VOLUME: - { - ao_control_vol_t *vol = (ao_control_vol_t *)arg; - - int err; - snd_mixer_t *handle; - snd_mixer_elem_t *elem; - snd_mixer_selem_id_t *sid; - - static char *mix_name = NULL; - static char *card = NULL; - - long pmin, pmax; - long get_vol, set_vol; - float calc_vol, diff, f_multi; - - if(mix_name == NULL){ - if(mixer_device) { - card = strdup(mixer_device); - mix_name = strchr(card, '/'); - if(mix_name) { - *mix_name++ = 0; - } else { - mix_name = "PCM"; - } - } else { - mix_name = "PCM"; - card = "default"; - } - } - - if(ao_data.format == AFMT_AC3) - return CONTROL_TRUE; - - //allocate simple id - snd_mixer_selem_id_alloca(&sid); - - //sets simple-mixer index and name - snd_mixer_selem_id_set_index(sid, 0); - snd_mixer_selem_id_set_name(sid, mix_name); - - if ((err = snd_mixer_open(&handle, 0)) < 0) { - printf("alsa-control: mixer open error: %s\n", snd_strerror(err)); - return CONTROL_ERROR; - } - - if ((err = snd_mixer_attach(handle, card)) < 0) { - printf("alsa-control: mixer attach %s error: %s", card, snd_strerror(err)); - snd_mixer_close(handle); - return CONTROL_ERROR; - } - - if ((err = snd_mixer_selem_register(handle, NULL, NULL)) < 0) { - printf("alsa-control: mixer register error: %s", snd_strerror(err)); - snd_mixer_close(handle); - return CONTROL_ERROR; - } - err = snd_mixer_load(handle); - if (err < 0) { - printf("alsa-control: mixer load error: %s", snd_strerror(err)); - snd_mixer_close(handle); - return CONTROL_ERROR; - } - - elem = snd_mixer_find_selem(handle, sid); - if (!elem) { - printf("alsa-control: unable to find simple control '%s',%i\n", snd_mixer_selem_id_get_name(sid), snd_mixer_selem_id_get_index(sid)); - snd_mixer_close(handle); - return CONTROL_ERROR; - } - - snd_mixer_selem_get_playback_volume_range(elem,&pmin,&pmax); - f_multi = (100 / (float)pmax); - - if (cmd == AOCONTROL_SET_VOLUME) { - - diff = (vol->left+vol->right) / 2; - set_vol = rint(diff / f_multi); - - if (set_vol < 0) - set_vol = 0; - else if (set_vol > pmax) - set_vol = pmax; - - //setting channels - if ((err = snd_mixer_selem_set_playback_volume(elem, 0, set_vol)) < 0) { - printf("alsa-control: error setting left channel, %s",snd_strerror(err)); - return CONTROL_ERROR; - } - if ((err = snd_mixer_selem_set_playback_volume(elem, 1, set_vol)) < 0) { - printf("alsa-control: error setting right channel, %s",snd_strerror(err)); - return CONTROL_ERROR; - } - - //printf("diff=%f, set_vol=%i, pmax=%i, mult=%f\n", diff, set_vol, pmax, f_multi); - } - else { - snd_mixer_selem_get_playback_volume(elem, 0, &get_vol); - calc_vol = get_vol; - calc_vol = rintf(calc_vol * f_multi); - - vol->left = vol->right = (int)calc_vol; - - //printf("get_vol = %i, calc=%i\n",get_vol, calc_vol); - } - snd_mixer_close(handle); - return CONTROL_OK; - } -#endif - - } //end switch - return(CONTROL_UNKNOWN); -} - - -/* - open & setup audio device - return: 1=success 0=fail -*/ -static int init(int rate_hz, int channels, int format, int flags) -{ - int err; - int cards = -1; - int dir; - snd_pcm_uframes_t bufsize; - snd_pcm_info_t *alsa_info; - char *str_block_mode; - int device_set = 0; - - printf("alsa-init: requested format: %d Hz, %d channels, %s\n", rate_hz, - channels, audio_out_format_name(format)); - - alsa_handler = NULL; - - if (verbose>0) - printf("alsa-init: compiled for ALSA-%s\n", SND_LIB_VERSION_STR); - - if ((err = snd_card_next(&cards)) < 0 || cards < 0) - { - printf("alsa-init: no soundcards found: %s\n", snd_strerror(err)); - return(0); - } - - ao_data.samplerate = rate_hz; - ao_data.bps = channels * rate_hz; - ao_data.format = format; - ao_data.channels = channels; - ao_data.outburst = OUTBURST; - //ao_data.buffersize = MAX_OUTBURST; // was 16384 - - switch (format) - { - case AFMT_S8: - alsa_format = SND_PCM_FORMAT_S8; - break; - case AFMT_U8: - alsa_format = SND_PCM_FORMAT_U8; - break; - case AFMT_U16_LE: - alsa_format = SND_PCM_FORMAT_U16_LE; - break; - case AFMT_U16_BE: - alsa_format = SND_PCM_FORMAT_U16_BE; - break; -#ifndef WORDS_BIGENDIAN - case AFMT_AC3: -#endif - case AFMT_S16_LE: - alsa_format = SND_PCM_FORMAT_S16_LE; - break; -#ifdef WORDS_BIGENDIAN - case AFMT_AC3: -#endif - case AFMT_S16_BE: - alsa_format = SND_PCM_FORMAT_S16_BE; - break; - case AFMT_S32_LE: - alsa_format = SND_PCM_FORMAT_S32_LE; - break; - case AFMT_S32_BE: - alsa_format = SND_PCM_FORMAT_S32_BE; - break; - - default: - alsa_format = SND_PCM_FORMAT_MPEG; - break; - } - - switch(alsa_format) - { - case SND_PCM_FORMAT_S16_LE: - case SND_PCM_FORMAT_U16_LE: - ao_data.bps *= 2; - break; - case SND_PCM_FORMAT_S32_LE: - case SND_PCM_FORMAT_S32_BE: - ao_data.bps *= 4; - break; - case -1: - printf("alsa-init: invalid format (%s) requested - output disabled\n", - audio_out_format_name(format)); - return(0); - default: - break; - } - - if (ao_subdevice) { - //start parsing ao_subdevice, ugly and not thread safe! - //maybe there's a better way? - int i2 = 1; - int i3 = 0; - char *sub_str; - - char *token_str[3]; - char* test_str = strdup(ao_subdevice); - - - if ((strcspn(ao_subdevice, ":")) > 0) { - - sub_str = strtok(test_str, ":"); - *(token_str) = sub_str; - - while (((sub_str = strtok(NULL, ":")) != NULL) && (i2 <= 3)) { - *(token_str+i2) = sub_str; - i2 += 1; - } - - for (i3=0; i3 <= i2-1; i3++) { - if (strcmp(*(token_str + i3), "mmap") == 0) { - ao_mmap = 1; - } - else if (strcmp(*(token_str+i3), "noblock") == 0) { - ao_noblock = 1; - } - else if (strcmp(*(token_str+i3), "hw") == 0) { - if ((i3 < i2-1) && (strcmp(*(token_str+i3+1), "noblock") != 0) && (strcmp(*(token_str+i3+1), "mmap") != 0)) { - char *tmp; - - alsa_device = alloca(ALSA_DEVICE_SIZE); - snprintf(alsa_device, ALSA_DEVICE_SIZE, "hw:%s", *(token_str+(i3+1))); - if ((tmp = strrchr(alsa_device, '.')) && isdigit(*(tmp+1))) - *tmp = ','; - device_set = 1; - } - else { - alsa_device = *(token_str+i3); - device_set = 1; - } - } - else if (device_set == 0 && (!ao_mmap || !ao_noblock)) { - alsa_device = *(token_str+i3); - device_set = 1; - } - } - } - } else { //end parsing ao_subdevice - /* in any case for multichannel playback we should select - * appropriate device - */ - char devstr[128]; - - switch (channels) { - case 4: - strcpy(devstr, "surround40"); - alsa_device = devstr; - break; - case 6: - strcpy(devstr, "surround51"); - alsa_device = devstr; - break; - default: - break; - } - } - - - /* switch for spdif - * sets opening sequence for SPDIF - * sets also the playback and other switches 'on the fly' - * while opening the abstract alias for the spdif subdevice - * 'iec958' - */ - if (format == AFMT_AC3) { - char devstr[128]; - unsigned char s[4]; - int err, c; - - switch (channels) { - case 1: - case 2: - - s[0] = IEC958_AES0_NONAUDIO | - IEC958_AES0_CON_EMPHASIS_NONE; - s[1] = IEC958_AES1_CON_ORIGINAL | - IEC958_AES1_CON_PCM_CODER; - s[2] = 0; - s[3] = IEC958_AES3_CON_FS_48000; - - sprintf(devstr, "iec958:AES0=0x%x,AES1=0x%x,AES2=0x%x,AES3=0x%x", - s[0], s[1], s[2], s[3]); - - if (verbose>0) - printf("alsa-spdif-init: playing AC3, %i channels\n", channels); - break; - case 4: - strcpy(devstr, "surround40"); - break; - - case 6: - strcpy(devstr, "surround51"); - break; - - default: - fprintf(stderr, "%d channels are not supported\n", channels); - return(0); - } - - alsa_device = devstr; - } - - if (alsa_device == NULL) - { - int tmp_device, tmp_subdevice, err; - - if ((err = snd_pcm_info_malloc(&alsa_info)) < 0) - { - printf("alsa-init: memory allocation error: %s\n", snd_strerror(err)); - return(0); - } - - if ((alsa_device = alloca(ALSA_DEVICE_SIZE)) == NULL) - { - printf("alsa-init: memory allocation error: %s\n", strerror(errno)); - return(0); - } - - if ((tmp_device = snd_pcm_info_get_device(alsa_info)) < 0) - { - printf("alsa-init: can't get device\n"); - return(0); - } - - if ((tmp_subdevice = snd_pcm_info_get_subdevice(alsa_info)) < 0) - { - printf("alsa-init: can't get subdevice\n"); - return(0); - } - - if (verbose>0) - printf("alsa-init: got device=%i, subdevice=%i\n", tmp_device, tmp_subdevice); - - if ((err = snprintf(alsa_device, ALSA_DEVICE_SIZE, "hw:%1d,%1d", tmp_device, tmp_subdevice)) <= 0) - { - printf("alsa-init: can't write device-id\n"); - } - - snd_pcm_info_free(alsa_info); - printf("alsa-init: %d soundcard%s found, using: %s\n", cards+1, - (cards >= 0) ? "" : "s", alsa_device); - } else if (strcmp(alsa_device, "help") == 0) { - printf("alsa-help: available options are:\n"); - printf(" mmap: sets mmap-mode\n"); - printf(" noblock: sets noblock-mode\n"); - printf(" device-name: sets device name (change comma to point)\n"); - printf(" example -ao alsa1x:mmap:noblock:hw:0.3 sets noblock-mode,\n"); - printf(" mmap-mode and the device-name as first card fourth device\n"); - return(0); - } else { - printf("alsa-init: soundcard set to %s\n", alsa_device); - } - - //setting modes for block or nonblock-mode - if (ao_noblock) { - open_mode = SND_PCM_NONBLOCK; - set_block_mode = 1; - str_block_mode = "nonblock-mode"; - } - else { - open_mode = 0; - set_block_mode = 0; - str_block_mode = "block-mode"; - } - - //sets buff/chunksize if its set manually - if (ao_data.buffersize) { - switch (ao_data.buffersize) - { - case 1: - alsa_fragcount = 16; - chunk_size = 512; - if (verbose>0) { - printf("alsa-init: buffersize set manually to 8192\n"); - printf("alsa-init: chunksize set manually to 512\n"); - } - break; - case 2: - alsa_fragcount = 8; - chunk_size = 1024; - if (verbose>0) { - printf("alsa-init: buffersize set manually to 8192\n"); - printf("alsa-init: chunksize set manually to 1024\n"); - } - break; - case 3: - alsa_fragcount = 32; - chunk_size = 512; - if (verbose>0) { - printf("alsa-init: buffersize set manually to 16384\n"); - printf("alsa-init: chunksize set manually to 512\n"); - } - break; - case 4: - alsa_fragcount = 16; - chunk_size = 1024; - if (verbose>0) { - printf("alsa-init: buffersize set manually to 16384\n"); - printf("alsa-init: chunksize set manually to 1024\n"); - } - break; - default: - alsa_fragcount = 16; - if (ao_mmap) - chunk_size = 512; - else - chunk_size = 1024; - break; - } - } - - if (!alsa_handler) { - //modes = 0, SND_PCM_NONBLOCK, SND_PCM_ASYNC - if ((err = snd_pcm_open(&alsa_handler, alsa_device, SND_PCM_STREAM_PLAYBACK, open_mode)) < 0) - { - if (err != -EBUSY && ao_noblock) { - printf("alsa-init: open in nonblock-mode failed, trying to open in block-mode\n"); - if ((err = snd_pcm_open(&alsa_handler, alsa_device, SND_PCM_STREAM_PLAYBACK, 0)) < 0) { - printf("alsa-init: playback open error: %s\n", snd_strerror(err)); - return(0); - } else { - set_block_mode = 0; - str_block_mode = "block-mode"; - } - } else { - printf("alsa-init: playback open error: %s\n", snd_strerror(err)); - return(0); - } - } - - if ((err = snd_pcm_nonblock(alsa_handler, set_block_mode)) < 0) { - printf("alsa-init: error set block-mode %s\n", snd_strerror(err)); - } - else if (verbose>0) { - printf("alsa-init: pcm opened in %s\n", str_block_mode); - } - - snd_pcm_hw_params_alloca(&alsa_hwparams); - snd_pcm_sw_params_alloca(&alsa_swparams); - - // setting hw-parameters - if ((err = snd_pcm_hw_params_any(alsa_handler, alsa_hwparams)) < 0) - { - printf("alsa-init: unable to get initial parameters: %s\n", - snd_strerror(err)); - return(0); - } - - if (ao_mmap) { - snd_pcm_access_mask_t *mask = alloca(snd_pcm_access_mask_sizeof()); - snd_pcm_access_mask_none(mask); - snd_pcm_access_mask_set(mask, SND_PCM_ACCESS_MMAP_INTERLEAVED); - snd_pcm_access_mask_set(mask, SND_PCM_ACCESS_MMAP_NONINTERLEAVED); - snd_pcm_access_mask_set(mask, SND_PCM_ACCESS_MMAP_COMPLEX); - err = snd_pcm_hw_params_set_access_mask(alsa_handler, alsa_hwparams, mask); - printf("alsa-init: mmap set\n"); - } else { - err = snd_pcm_hw_params_set_access(alsa_handler, alsa_hwparams,SND_PCM_ACCESS_RW_INTERLEAVED); - } - if (err < 0) { - printf("alsa-init: unable to set access type: %s\n", snd_strerror(err)); - return (0); - } - - /* workaround for nonsupported formats - sets default format to S16_LE if the given formats aren't supported */ - if ((err = snd_pcm_hw_params_test_format(alsa_handler, alsa_hwparams, - alsa_format)) < 0) - { - printf("alsa-init: format %s are not supported by hardware, trying default\n", - audio_out_format_name(format)); - alsa_format = SND_PCM_FORMAT_S16_LE; - ao_data.format = AFMT_S16_LE; - ao_data.bps = channels * rate_hz * 2; - } - - bytes_per_sample = ao_data.bps / ao_data.samplerate; //it should be here - - - if ((err = snd_pcm_hw_params_set_format(alsa_handler, alsa_hwparams, - alsa_format)) < 0) - { - printf("alsa-init: unable to set format: %s\n", - snd_strerror(err)); - return(0); - } - - if ((err = snd_pcm_hw_params_set_channels(alsa_handler, alsa_hwparams, - ao_data.channels)) < 0) - { - printf("alsa-init: unable to set channels: %s\n", - snd_strerror(err)); - return(0); - } - - dir = 0; - if ((err = snd_pcm_hw_params_set_rate_near(alsa_handler, alsa_hwparams, &ao_data.samplerate, &dir)) < 0) - { - printf("alsa-init: unable to set samplerate-2: %s\n", - snd_strerror(err)); - return(0); - } - -#ifdef BUFFERTIME - { - int alsa_buffer_time = 500000; /* original 60 */ - int alsa_period_time; - - dir = 0; - if ((err = snd_pcm_hw_params_set_buffer_time_near(alsa_handler, alsa_hwparams, &alsa_buffer_time, &dir)) < 0) - { - printf("alsa-init: unable to set buffer time near: %s\n", - snd_strerror(err)); - return(0); - } - - alsa_period_time = alsa_buffer_time/4; ; - - dir = 0; - if ((err = snd_pcm_hw_params_set_period_time_near(alsa_handler, alsa_hwparams, &alsa_period_time, &dir)) < 0) - /* original: alsa_buffer_time/ao_data.bps */ - { - printf("alsa-init: unable to set period time: %s\n", - snd_strerror(err)); - return(0); - } - if (verbose>0) - printf("alsa-init: buffer_time: %d, period_time :%d\n",alsa_buffer_time, alsa_period_time); - } -#endif - -#ifdef SET_CHUNKSIZE - { - //set chunksize - dir = 0; - if ((err = snd_pcm_hw_params_set_period_size_near(alsa_handler, alsa_hwparams, &chunk_size, &dir)) < 0) - { - printf("alsa-init: unable to set periodsize: %s\n", snd_strerror(err)); - return(0); - } - else if (verbose>0) { - printf("alsa-init: chunksize set to %i\n", chunk_size); - } - - dir = 0; - if ((err = snd_pcm_hw_params_set_periods_near(alsa_handler, alsa_hwparams, &alsa_fragcount, &dir)) < 0) { - printf("alsa-init: unable to set periods: %s\n", snd_strerror(err)); - } - - if (verbose>0) - printf("alsa-init: fragcount=%i\n", alsa_fragcount); - } -#endif - - /* finally install hardware parameters */ - if ((err = snd_pcm_hw_params(alsa_handler, alsa_hwparams)) < 0) - { - printf("alsa-init: unable to set hw-parameters: %s\n", - snd_strerror(err)); - return(0); - } - // end setting hw-params - - - // gets buffersize for control - if ((err = snd_pcm_hw_params_get_buffer_size(alsa_hwparams, &bufsize)) < 0) - { - printf("alsa-init: unable to get buffersize: %s\n", snd_strerror(err)); - return(0); - } - else { - ao_data.buffersize = bufsize * bytes_per_sample; - if (verbose>0) - printf("alsa-init: got buffersize=%i\n", ao_data.buffersize); - } - - // setting sw-params (only avail-min) if noblocking mode was choosed - if (ao_noblock) - { - - if ((err = snd_pcm_sw_params_current(alsa_handler, alsa_swparams)) < 0) - { - printf("alsa-init: unable to get parameters: %s\n",snd_strerror(err)); - return(0); - } - - //set min available frames to consider pcm ready (4) - //increased for nonblock-mode should be set dynamically later - if ((err = snd_pcm_sw_params_set_avail_min(alsa_handler, alsa_swparams, 4)) < 0) - { - printf("alsa-init: unable to set avail_min %s\n",snd_strerror(err)); - return(0); - } - - if ((err = snd_pcm_sw_params(alsa_handler, alsa_swparams)) < 0) - { - printf("alsa-init: unable to install sw-params\n"); - return(0); - } - - bits_per_sample = snd_pcm_format_physical_width(alsa_format); - bits_per_frame = bits_per_sample * channels; - chunk_bytes = chunk_size * bits_per_frame / 8; - - if (verbose>0) { - printf("alsa-init: bits per sample (bps)=%i, bits per frame (bpf)=%i, chunk_bytes=%i\n",bits_per_sample,bits_per_frame,chunk_bytes);} - - }//end swparams - - if ((err = snd_pcm_prepare(alsa_handler)) < 0) - { - printf("alsa-init: pcm prepare error: %s\n", snd_strerror(err)); - return(0); - } - - printf("alsa1x: %d Hz/%d channels/%d bpf/%d bytes buffer/%s\n", - ao_data.samplerate, ao_data.channels, bytes_per_sample, ao_data.buffersize, - snd_pcm_format_description(alsa_format)); - - } // end switch alsa_handler (spdif) - alsa_can_pause = snd_pcm_hw_params_can_pause(alsa_hwparams); - return(1); -} // end init - - -/* close audio device */ -static void uninit(int immed) -{ - - if (alsa_handler) { - int err; - - if (!ao_noblock) { - if ((err = snd_pcm_drop(alsa_handler)) < 0) - { - printf("alsa-uninit: pcm drop error: %s\n", snd_strerror(err)); - return; - } - } - - if ((err = snd_pcm_close(alsa_handler)) < 0) - { - printf("alsa-uninit: pcm close error: %s\n", snd_strerror(err)); - return; - } - else { - alsa_handler = NULL; - alsa_device = NULL; - printf("alsa-uninit: pcm closed\n"); - } - } - else { - printf("alsa-uninit: no handler defined!\n"); - } -} - -static void audio_pause() -{ - int err; - - if (alsa_can_pause) { - if ((err = snd_pcm_pause(alsa_handler, 1)) < 0) - { - printf("alsa-pause: pcm pause error: %s\n", snd_strerror(err)); - return; - } - if (verbose) - printf("alsa-pause: pause supported by hardware\n"); - } else { - if ((err = snd_pcm_drop(alsa_handler)) < 0) - { - printf("alsa-pause: pcm drop error: %s\n", snd_strerror(err)); - return; - } - } -} - -static void audio_resume() -{ - int err; - - if (alsa_can_pause) { - if ((err = snd_pcm_pause(alsa_handler, 0)) < 0) - { - printf("alsa-resume: pcm resume error: %s\n", snd_strerror(err)); - return; - } - if (verbose) - printf("alsa-resume: resume supported by hardware\n"); - } else { - if ((err = snd_pcm_prepare(alsa_handler)) < 0) - { - printf("alsa-resume: pcm prepare error: %s\n", snd_strerror(err)); - return; - } - } -} - -/* stop playing and empty buffers (for seeking/pause) */ -static void reset() -{ - int err; - - if ((err = snd_pcm_drop(alsa_handler)) < 0) - { - printf("alsa-reset: pcm drop error: %s\n", snd_strerror(err)); - return; - } - if ((err = snd_pcm_prepare(alsa_handler)) < 0) - { - printf("alsa-reset: pcm prepare error: %s\n", snd_strerror(err)); - return; - } - return; -} - -#ifdef USE_POLL -static int wait_for_poll(snd_pcm_t *handle, struct pollfd *ufds, unsigned int count) -{ - unsigned short revents; - - while (1) { - poll(ufds, count, -1); - snd_pcm_poll_descriptors_revents(handle, ufds, count, &revents); - if (revents & POLLERR) - return -EIO; - if (revents & POLLOUT) - return 0; - } -} -#endif - -#ifndef timersub -#define timersub(a, b, result) \ -do { \ - (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ - (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ - if ((result)->tv_usec < 0) { \ - --(result)->tv_sec; \ - (result)->tv_usec += 1000000; \ - } \ -} while (0) -#endif - -/* I/O error handler */ -static int xrun(u_char *str_mode) -{ - int err; - snd_pcm_status_t *status; - - snd_pcm_status_alloca(&status); - - if ((err = snd_pcm_status(alsa_handler, status))<0) { - printf("status error: %s", snd_strerror(err)); - return(0); - } - - if (snd_pcm_status_get_state(status) == SND_PCM_STATE_XRUN) { - struct timeval now, diff, tstamp; - gettimeofday(&now, 0); - snd_pcm_status_get_trigger_tstamp(status, &tstamp); - timersub(&now, &tstamp, &diff); - printf("alsa-%s: xrun of at least %.3f msecs. resetting stream\n", - str_mode, - diff.tv_sec * 1000 + diff.tv_usec / 1000.0); - } - - if ((err = snd_pcm_prepare(alsa_handler))<0) { - printf("xrun: prepare error: %s", snd_strerror(err)); - return(0); - } - - return(1); /* ok, data should be accepted again */ -} - -static int play_normal(void* data, int len); -static int play_mmap(void* data, int len); - -static int play(void* data, int len, int flags) -{ - int result; - if (ao_mmap) - result = play_mmap(data, len); - else - result = play_normal(data, len); - - return result; -} - -/* - plays 'len' bytes of 'data' - returns: number of bytes played - modified last at 29.06.02 by jp - thanxs for marius for giving us the light ;) -*/ - -static int play_normal(void* data, int len) -{ - - //bytes_per_sample is always 4 for 2 chn S16_LE - int num_frames = len / bytes_per_sample; - char *output_samples = (char *)data; - snd_pcm_sframes_t res = 0; - - //fprintf(stderr,"alsa-play: frames=%i, len=%i\n",num_frames,len); - - if (!alsa_handler) { - printf("alsa-play: device configuration error"); - return 0; - } - - while (num_frames > 0) { - - res = snd_pcm_writei(alsa_handler, (void *)output_samples, num_frames); - - if (res == -EAGAIN) { - snd_pcm_wait(alsa_handler, 1000); - } - else if (res == -EPIPE) { /* underrun */ - if (xrun("play") <= 0) { - printf("alsa-play: xrun reset error"); - return(0); - } - } - else if (res == -ESTRPIPE) { /* suspend */ - printf("alsa-play: pcm in suspend mode. trying to resume\n"); - while ((res = snd_pcm_resume(alsa_handler)) == -EAGAIN) - sleep(1); - } - else if (res < 0) { - printf("alsa-play: unknown status, trying to reset soundcard\n"); - if ((res = snd_pcm_prepare(alsa_handler)) < 0) { - printf("alsa-play: snd prepare error"); - return(0); - break; - } - } - - if (res > 0) { - - /* output_samples += ao_data.channels * res; */ - output_samples += res * bytes_per_sample; - - num_frames -= res; - } - - } //end while - - if (res < 0) { - printf("alsa-play: write error %s", snd_strerror(res)); - return 0; - } - return res < 0 ? (int)res : len - len % bytes_per_sample; -} - -/* mmap-mode mainly based on descriptions by Joshua Haberman - * 'An overview of the ALSA API' http://people.debian.org/~joshua/x66.html - * and some help by Paul Davis */ - -static int play_mmap(void* data, int len) -{ - snd_pcm_sframes_t commitres, frames_available; - snd_pcm_uframes_t frames_transmit, size, offset; - const snd_pcm_channel_area_t *area; - void *outbuffer; - int err, result; - -#ifdef USE_POLL //seems not really be needed - struct pollfd *ufds; - int count; - - count = snd_pcm_poll_descriptors_count (alsa_handler); - ufds = malloc(sizeof(struct pollfd) * count); - snd_pcm_poll_descriptors(alsa_handler, ufds, count); - - //first wait_for_poll - if (err = (wait_for_poll(alsa_handler, ufds, count) < 0)) { - if (snd_pcm_state(alsa_handler) == SND_PCM_STATE_XRUN || - snd_pcm_state(alsa_handler) == SND_PCM_STATE_SUSPENDED) { - xrun("play"); - } - } -#endif - - outbuffer = alloca(ao_data.buffersize); - - //don't trust get_space() ;) - frames_available = snd_pcm_avail_update(alsa_handler) * bytes_per_sample; - if (frames_available < 0) - xrun("play"); - - if (frames_available < 4) { - if (first) { - first = 0; - snd_pcm_start(alsa_handler); - } - else { //FIXME should break and return 0? - snd_pcm_wait(alsa_handler, -1); - first = 1; - } - } - - /* len is simply the available bufferspace got by get_space() - * but real avail_buffer in frames is ab/bytes_per_sample */ - size = len / bytes_per_sample; - - //if (verbose) - //printf("len: %i size %i, f_avail %i, bps %i ...\n", len, size, frames_available, bytes_per_sample); - - frames_transmit = size; - - /* prepare areas and set sw-pointers - * frames_transmit returns the real available buffer-size - * sometimes != frames_available cause of ringbuffer 'emulation' */ - snd_pcm_mmap_begin(alsa_handler, &area, &offset, &frames_transmit); - - /* this is specific to interleaved streams (or non-interleaved - * streams with only one channel) */ - outbuffer = ((char *) area->addr + (area->first + area->step * offset) / 8); //8 - - //write data - memcpy(outbuffer, data, (frames_transmit * bytes_per_sample)); - - commitres = snd_pcm_mmap_commit(alsa_handler, offset, frames_transmit); - - if (commitres < 0 || commitres != frames_transmit) { - if (snd_pcm_state(alsa_handler) == SND_PCM_STATE_XRUN || - snd_pcm_state(alsa_handler) == SND_PCM_STATE_SUSPENDED) { - xrun("play"); - } - } - - //if (verbose) - //printf("mmap ft: %i, cres: %i\n", frames_transmit, commitres); - - /* err = snd_pcm_area_copy(&area, offset, &data, offset, len, alsa_format); */ - /* if (err < 0) { */ - /* printf("area-copy-error\n"); */ - /* return 0; */ - /* } */ - - - //calculate written frames! - result = commitres * bytes_per_sample; - - - /* if (verbose) { */ - /* if (len == result) */ - /* printf("result: %i, frames written: %i ...\n", result, frames_transmit); */ - /* else */ - /* printf("result: %i, frames written: %i, result != len ...\n", result, frames_transmit); */ - /* } */ - - //mplayer doesn't like -result - if (result < 0) - result = 0; - -#ifdef USE_POLL - free(ufds); -#endif - - return result; -} - -/* how many byes are free in the buffer */ -static int get_space() -{ - snd_pcm_status_t *status; - int ret; - char *str_status; - - //snd_pcm_sframes_t avail_frames = 0; - - if ((ret = snd_pcm_status_malloc(&status)) < 0) - { - printf("alsa-space: memory allocation error: %s\n", snd_strerror(ret)); - return(0); - } - - if ((ret = snd_pcm_status(alsa_handler, status)) < 0) - { - printf("alsa-space: cannot get pcm status: %s\n", snd_strerror(ret)); - return(0); - } - - switch(snd_pcm_status_get_state(status)) - { - case SND_PCM_STATE_OPEN: - str_status = "open"; - case SND_PCM_STATE_PREPARED: - if (str_status != "open") { - str_status = "prepared"; - first = 1; - ret = snd_pcm_status_get_avail(status) * bytes_per_sample; - if (ret == 0) //ugly workaround for hang in mmap-mode - ret = 10; - break; - } - case SND_PCM_STATE_RUNNING: - ret = snd_pcm_status_get_avail(status) * bytes_per_sample; - //avail_frames = snd_pcm_avail_update(alsa_handler) * bytes_per_sample; - if (str_status != "open" && str_status != "prepared") - str_status = "running"; - break; - case SND_PCM_STATE_PAUSED: - if (verbose>0) printf("alsa-space: paused"); - str_status = "paused"; - ret = 0; - break; - case SND_PCM_STATE_XRUN: - xrun("space"); - str_status = "xrun"; - first = 1; - ret = 0; - break; - default: - str_status = "undefined"; - ret = snd_pcm_status_get_avail(status) * bytes_per_sample; - if (ret <= 0) { - xrun("space"); - } - } - - if (verbose>0 && str_status != "running") - printf("alsa-space: free space = %i, status=%i, %s --\n", ret, status, str_status); - snd_pcm_status_free(status); - - if (ret < 0) { - printf("negative value!!\n"); - ret = 0; - } - - // workaround for too small value returned - if (ret < MIN_CHUNK_SIZE) - ret = 0; - - return(ret); -} - -/* delay in seconds between first and last sample in buffer */ -static float get_delay() -{ - - if (alsa_handler) { - - snd_pcm_status_t *status; - float ret; - - if ((ret = snd_pcm_status_malloc(&status)) < 0) - { - printf("alsa-delay: memory allocation error: %s\n", snd_strerror(ret)); - return(0); - } - - if ((ret = snd_pcm_status(alsa_handler, status)) < 0) - { - printf("alsa-delay: cannot get pcm status: %s\n", snd_strerror(ret)); - return(0); - } - - switch(snd_pcm_status_get_state(status)) - { - case SND_PCM_STATE_OPEN: - case SND_PCM_STATE_PREPARED: - case SND_PCM_STATE_RUNNING: - ret = (float)snd_pcm_status_get_delay(status)/(float)ao_data.samplerate; - break; - default: - ret = 0; - } - - snd_pcm_status_free(status); - - if (ret < 0) - ret = 0; - return(ret); - - } else { - return(0); - } -} diff --git a/libao2/ao_alsa9.c b/libao2/ao_alsa9.c deleted file mode 100644 index 3795db4f26..0000000000 --- a/libao2/ao_alsa9.c +++ /dev/null @@ -1,1180 +0,0 @@ -/* - ao_alsa9 - ALSA-0.9.x output plugin for MPlayer - - (C) Alex Beregszaszi - - modified for real alsa-0.9.0-support by Joy Winter - additional AC3 passthrough support by Andy Lo A Foe - 08/22/2002 iec958-init rewritten and merged with common init, joy - - Any bugreports regarding to this driver are welcome. -*/ - -#include -#include -#include -#include -#include -#include - -#include "../config.h" -#include "../mixer.h" - -#define ALSA_PCM_OLD_HW_PARAMS_API -#include - -#include "audio_out.h" -#include "audio_out_internal.h" -#include "afmt.h" - -extern int verbose; - -static ao_info_t info = -{ - "ALSA-0.9.x audio output", - "alsa9", - "Alex Beregszaszi, Joy Winter ", - "under developement" -}; - -LIBAO_EXTERN(alsa9) - -static snd_pcm_t *alsa_handler; -static snd_pcm_format_t alsa_format; -static snd_pcm_hw_params_t *alsa_hwparams; -static snd_pcm_sw_params_t *alsa_swparams; -static char *alsa_device; - -/* possible 4096, original 8192 - * was only needed for calculating chunksize? */ -static int alsa_fragsize = 4096; -/* 16 sets buffersize to 16 * chunksize is as default 1024 - * which seems to be good avarge for most situations - * so buffersize is 16384 frames by default */ -static int alsa_fragcount = 16; -static int chunk_size = 1024; //is alsa_fragsize / 4 - -#define MIN_CHUNK_SIZE 1024 - -static size_t bits_per_sample, bytes_per_sample, bits_per_frame; -static size_t chunk_bytes; - -int ao_mmap = 0; -int ao_noblock = 0; -int first = 1; - -static int open_mode; -static int set_block_mode; -static int alsa_can_pause = 0; - -#define ALSA_DEVICE_SIZE 48 - -//#undef BUFFERTIME -//#undef SET_CHUNKSIZE -#undef USE_POLL - - -/* to set/get/query special features/parameters */ -static int control(int cmd, void *arg) -{ - switch(cmd) { - case AOCONTROL_QUERY_FORMAT: - return CONTROL_TRUE; -#ifndef WORDS_BIGENDIAN - case AOCONTROL_GET_VOLUME: - case AOCONTROL_SET_VOLUME: - { - ao_control_vol_t *vol = (ao_control_vol_t *)arg; - - int err; - snd_mixer_t *handle; - snd_mixer_elem_t *elem; - snd_mixer_selem_id_t *sid; - - static char *mix_name = NULL; - static char *card = NULL; - - long pmin, pmax; - long get_vol, set_vol; - float calc_vol, diff, f_multi; - - if(mix_name == NULL){ - if(mixer_device) { - card = strdup(mixer_device); - mix_name = strchr(card, '/'); - if(mix_name) { - *mix_name++ = 0; - } else { - mix_name = "PCM"; - } - } else { - mix_name = "PCM"; - card = "default"; - } - } - - if(ao_data.format == AFMT_AC3) - return CONTROL_TRUE; - - //allocate simple id - snd_mixer_selem_id_alloca(&sid); - - //sets simple-mixer index and name - snd_mixer_selem_id_set_index(sid, 0); - snd_mixer_selem_id_set_name(sid, mix_name); - - if ((err = snd_mixer_open(&handle, 0)) < 0) { - printf("alsa-control: mixer open error: %s\n", snd_strerror(err)); - return CONTROL_ERROR; - } - - if ((err = snd_mixer_attach(handle, card)) < 0) { - printf("alsa-control: mixer attach %s error: %s", card, snd_strerror(err)); - snd_mixer_close(handle); - return CONTROL_ERROR; - } - - if ((err = snd_mixer_selem_register(handle, NULL, NULL)) < 0) { - printf("alsa-control: mixer register error: %s", snd_strerror(err)); - snd_mixer_close(handle); - return CONTROL_ERROR; - } - err = snd_mixer_load(handle); - if (err < 0) { - printf("alsa-control: mixer load error: %s", snd_strerror(err)); - snd_mixer_close(handle); - return CONTROL_ERROR; - } - - elem = snd_mixer_find_selem(handle, sid); - if (!elem) { - printf("alsa-control: unable to find simple control '%s',%i\n", snd_mixer_selem_id_get_name(sid), snd_mixer_selem_id_get_index(sid)); - snd_mixer_close(handle); - return CONTROL_ERROR; - } - - snd_mixer_selem_get_playback_volume_range(elem,&pmin,&pmax); - f_multi = (100 / (float)pmax); - - if (cmd == AOCONTROL_SET_VOLUME) { - - diff = (vol->left+vol->right) / 2; - set_vol = rint(diff / f_multi); - - if (set_vol < 0) - set_vol = 0; - else if (set_vol > pmax) - set_vol = pmax; - - //setting channels - if ((err = snd_mixer_selem_set_playback_volume(elem, 0, set_vol)) < 0) { - printf("alsa-control: error setting left channel, %s",snd_strerror(err)); - return CONTROL_ERROR; - } - if ((err = snd_mixer_selem_set_playback_volume(elem, 1, set_vol)) < 0) { - printf("alsa-control: error setting right channel, %s",snd_strerror(err)); - return CONTROL_ERROR; - } - - //printf("diff=%f, set_vol=%i, pmax=%i, mult=%f\n", diff, set_vol, pmax, f_multi); - } - else { - snd_mixer_selem_get_playback_volume(elem, 0, &get_vol); - calc_vol = get_vol; - calc_vol = rintf(calc_vol * f_multi); - - vol->left = vol->right = (int)calc_vol; - - //printf("get_vol = %i, calc=%i\n",get_vol, calc_vol); - } - snd_mixer_close(handle); - return CONTROL_OK; - } -#endif - - } //end switch - return(CONTROL_UNKNOWN); -} - - -/* - open & setup audio device - return: 1=success 0=fail -*/ -static int init(int rate_hz, int channels, int format, int flags) -{ - int err; - int cards = -1; - int period_val; - snd_pcm_info_t *alsa_info; - char *str_block_mode; - int device_set = 0; - - printf("alsa-init: requested format: %d Hz, %d channels, %s\n", rate_hz, - channels, audio_out_format_name(format)); - - alsa_handler = NULL; - - if (verbose>0) - printf("alsa-init: compiled for ALSA-%s\n", SND_LIB_VERSION_STR); - - if ((err = snd_card_next(&cards)) < 0 || cards < 0) - { - printf("alsa-init: no soundcards found: %s\n", snd_strerror(err)); - return(0); - } - - ao_data.samplerate = rate_hz; - ao_data.bps = channels * rate_hz; - ao_data.format = format; - ao_data.channels = channels; - ao_data.outburst = OUTBURST; - //ao_data.buffersize = MAX_OUTBURST; // was 16384 - - switch (format) - { - case AFMT_S8: - alsa_format = SND_PCM_FORMAT_S8; - break; - case AFMT_U8: - alsa_format = SND_PCM_FORMAT_U8; - break; - case AFMT_U16_LE: - alsa_format = SND_PCM_FORMAT_U16_LE; - break; - case AFMT_U16_BE: - alsa_format = SND_PCM_FORMAT_U16_BE; - break; -#ifndef WORDS_BIGENDIAN - case AFMT_AC3: -#endif - case AFMT_S16_LE: - alsa_format = SND_PCM_FORMAT_S16_LE; - break; -#ifdef WORDS_BIGENDIAN - case AFMT_AC3: -#endif - case AFMT_S16_BE: - alsa_format = SND_PCM_FORMAT_S16_BE; - break; - case AFMT_S32_LE: - alsa_format = SND_PCM_FORMAT_S32_LE; - break; - case AFMT_S32_BE: - alsa_format = SND_PCM_FORMAT_S32_BE; - break; - - default: - alsa_format = SND_PCM_FORMAT_MPEG; - break; - } - - switch(alsa_format) - { - case SND_PCM_FORMAT_S16_LE: - case SND_PCM_FORMAT_U16_LE: - ao_data.bps *= 2; - break; - case SND_PCM_FORMAT_S32_LE: - case SND_PCM_FORMAT_S32_BE: - ao_data.bps *= 4; - break; - case -1: - printf("alsa-init: invalid format (%s) requested - output disabled\n", - audio_out_format_name(format)); - return(0); - default: - break; - } - - if (ao_subdevice) { - //start parsing ao_subdevice, ugly and not thread safe! - //maybe there's a better way? - int i2 = 1; - int i3 = 0; - char *sub_str; - - char *token_str[3]; - char* test_str = strdup(ao_subdevice); - - - if ((strcspn(ao_subdevice, ":")) > 0) { - - sub_str = strtok(test_str, ":"); - *(token_str) = sub_str; - - while (((sub_str = strtok(NULL, ":")) != NULL) && (i2 <= 3)) { - *(token_str+i2) = sub_str; - i2 += 1; - } - - for (i3=0; i3 <= i2-1; i3++) { - if (strcmp(*(token_str + i3), "mmap") == 0) { - ao_mmap = 1; - } - else if (strcmp(*(token_str+i3), "noblock") == 0) { - ao_noblock = 1; - } - else if (strcmp(*(token_str+i3), "hw") == 0) { - if ((i3 < i2-1) && (strcmp(*(token_str+i3+1), "noblock") != 0) && (strcmp(*(token_str+i3+1), "mmap") != 0)) { - char *tmp; - - alsa_device = alloca(ALSA_DEVICE_SIZE); - snprintf(alsa_device, ALSA_DEVICE_SIZE, "hw:%s", *(token_str+(i3+1))); - if ((tmp = strrchr(alsa_device, '.')) && isdigit(*(tmp+1))) - *tmp = ','; - device_set = 1; - } - else { - alsa_device = *(token_str+i3); - device_set = 1; - } - } - else if (device_set == 0 && (!ao_mmap || !ao_noblock)) { - alsa_device = *(token_str+i3); - device_set = 1; - } - } - } - } else { //end parsing ao_subdevice - /* in any case for multichannel playback we should select - * appropriate device - */ - char devstr[128]; - - switch (channels) { - case 4: - strcpy(devstr, "surround40"); - alsa_device = devstr; - break; - case 6: - strcpy(devstr, "surround51"); - alsa_device = devstr; - break; - default: - } - } - - - /* switch for spdif - * sets opening sequence for SPDIF - * sets also the playback and other switches 'on the fly' - * while opening the abstract alias for the spdif subdevice - * 'iec958' - */ - if (format == AFMT_AC3) { - char devstr[128]; - unsigned char s[4]; - int err, c; - - switch (channels) { - case 1: - case 2: - - s[0] = IEC958_AES0_NONAUDIO | - IEC958_AES0_CON_EMPHASIS_NONE; - s[1] = IEC958_AES1_CON_ORIGINAL | - IEC958_AES1_CON_PCM_CODER; - s[2] = 0; - s[3] = IEC958_AES3_CON_FS_48000; - - sprintf(devstr, "iec958:AES0=0x%x,AES1=0x%x,AES2=0x%x,AES3=0x%x", - s[0], s[1], s[2], s[3]); - - if (verbose>0) - printf("alsa-spdif-init: playing AC3, %i channels\n", channels); - break; - case 4: - strcpy(devstr, "surround40"); - break; - - case 6: - strcpy(devstr, "surround51"); - break; - - default: - fprintf(stderr, "%d channels are not supported\n", channels); - return(0); - } - - alsa_device = devstr; - } - - if (alsa_device == NULL) - { - int tmp_device, tmp_subdevice, err; - - if ((err = snd_pcm_info_malloc(&alsa_info)) < 0) - { - printf("alsa-init: memory allocation error: %s\n", snd_strerror(err)); - return(0); - } - - if ((alsa_device = alloca(ALSA_DEVICE_SIZE)) == NULL) - { - printf("alsa-init: memory allocation error: %s\n", strerror(errno)); - return(0); - } - - if ((tmp_device = snd_pcm_info_get_device(alsa_info)) < 0) - { - printf("alsa-init: can't get device\n"); - return(0); - } - - if ((tmp_subdevice = snd_pcm_info_get_subdevice(alsa_info)) < 0) - { - printf("alsa-init: can't get subdevice\n"); - return(0); - } - - if (verbose>0) - printf("alsa-init: got device=%i, subdevice=%i\n", tmp_device, tmp_subdevice); - - if ((err = snprintf(alsa_device, ALSA_DEVICE_SIZE, "hw:%1d,%1d", tmp_device, tmp_subdevice)) <= 0) - { - printf("alsa-init: can't write device-id\n"); - } - - snd_pcm_info_free(alsa_info); - printf("alsa-init: %d soundcard%s found, using: %s\n", cards+1, - (cards >= 0) ? "" : "s", alsa_device); - } else if (strcmp(alsa_device, "help") == 0) { - printf("alsa-help: available options are:\n"); - printf(" mmap: sets mmap-mode\n"); - printf(" noblock: sets noblock-mode\n"); - printf(" device-name: sets device name (change comma to point)\n"); - printf(" example -ao alsa9:mmap:noblock:hw:0.3 sets noblock-mode,\n"); - printf(" mmap-mode and the device-name as first card fourth device\n"); - return(0); - } else { - printf("alsa-init: soundcard set to %s\n", alsa_device); - } - - //setting modes for block or nonblock-mode - if (ao_noblock) { - open_mode = SND_PCM_NONBLOCK; - set_block_mode = 1; - str_block_mode = "nonblock-mode"; - } - else { - open_mode = 0; - set_block_mode = 0; - str_block_mode = "block-mode"; - } - - //sets buff/chunksize if its set manually - if (ao_data.buffersize) { - switch (ao_data.buffersize) - { - case 1: - alsa_fragcount = 16; - chunk_size = 512; - if (verbose>0) { - printf("alsa-init: buffersize set manually to 8192\n"); - printf("alsa-init: chunksize set manually to 512\n"); - } - break; - case 2: - alsa_fragcount = 8; - chunk_size = 1024; - if (verbose>0) { - printf("alsa-init: buffersize set manually to 8192\n"); - printf("alsa-init: chunksize set manually to 1024\n"); - } - break; - case 3: - alsa_fragcount = 32; - chunk_size = 512; - if (verbose>0) { - printf("alsa-init: buffersize set manually to 16384\n"); - printf("alsa-init: chunksize set manually to 512\n"); - } - break; - case 4: - alsa_fragcount = 16; - chunk_size = 1024; - if (verbose>0) { - printf("alsa-init: buffersize set manually to 16384\n"); - printf("alsa-init: chunksize set manually to 1024\n"); - } - break; - default: - alsa_fragcount = 16; - if (ao_mmap) - chunk_size = 512; - else - chunk_size = 1024; - break; - } - } - - if (!alsa_handler) { - //modes = 0, SND_PCM_NONBLOCK, SND_PCM_ASYNC - if ((err = snd_pcm_open(&alsa_handler, alsa_device, SND_PCM_STREAM_PLAYBACK, open_mode)) < 0) - { - if (err != -EBUSY && ao_noblock) { - printf("alsa-init: open in nonblock-mode failed, trying to open in block-mode\n"); - if ((err = snd_pcm_open(&alsa_handler, alsa_device, SND_PCM_STREAM_PLAYBACK, 0)) < 0) { - printf("alsa-init: playback open error: %s\n", snd_strerror(err)); - return(0); - } else { - set_block_mode = 0; - str_block_mode = "block-mode"; - } - } else { - printf("alsa-init: playback open error: %s\n", snd_strerror(err)); - return(0); - } - } - - if ((err = snd_pcm_nonblock(alsa_handler, set_block_mode)) < 0) { - printf("alsa-init: error set block-mode %s\n", snd_strerror(err)); - } - else if (verbose>0) { - printf("alsa-init: pcm opend in %s\n", str_block_mode); - } - - snd_pcm_hw_params_alloca(&alsa_hwparams); - snd_pcm_sw_params_alloca(&alsa_swparams); - - // setting hw-parameters - if ((err = snd_pcm_hw_params_any(alsa_handler, alsa_hwparams)) < 0) - { - printf("alsa-init: unable to get initial parameters: %s\n", - snd_strerror(err)); - return(0); - } - - if (ao_mmap) { - snd_pcm_access_mask_t *mask = alloca(snd_pcm_access_mask_sizeof()); - snd_pcm_access_mask_none(mask); - snd_pcm_access_mask_set(mask, SND_PCM_ACCESS_MMAP_INTERLEAVED); - snd_pcm_access_mask_set(mask, SND_PCM_ACCESS_MMAP_NONINTERLEAVED); - snd_pcm_access_mask_set(mask, SND_PCM_ACCESS_MMAP_COMPLEX); - err = snd_pcm_hw_params_set_access_mask(alsa_handler, alsa_hwparams, mask); - printf("alsa-init: mmap set\n"); - } else { - err = snd_pcm_hw_params_set_access(alsa_handler, alsa_hwparams,SND_PCM_ACCESS_RW_INTERLEAVED); - } - if (err < 0) { - printf("alsa-init: unable to set access type: %s\n", snd_strerror(err)); - return (0); - } - - /* workaround for nonsupported formats - sets default format to S16_LE if the given formats aren't supported */ - if ((err = snd_pcm_hw_params_test_format(alsa_handler, alsa_hwparams, - alsa_format)) < 0) - { - printf("alsa-init: format %s are not supported by hardware, trying default\n", - audio_out_format_name(format)); - alsa_format = SND_PCM_FORMAT_S16_LE; - ao_data.format = AFMT_S16_LE; - ao_data.bps = channels * rate_hz * 2; - } - - bytes_per_sample = ao_data.bps / ao_data.samplerate; //it should be here - - - if ((err = snd_pcm_hw_params_set_format(alsa_handler, alsa_hwparams, - alsa_format)) < 0) - { - printf("alsa-init: unable to set format: %s\n", - snd_strerror(err)); - return(0); - } - - if ((err = snd_pcm_hw_params_set_channels(alsa_handler, alsa_hwparams, - ao_data.channels)) < 0) - { - printf("alsa-init: unable to set channels: %s\n", - snd_strerror(err)); - return(0); - } - - if ((err = snd_pcm_hw_params_set_rate_near(alsa_handler, alsa_hwparams, ao_data.samplerate, 0)) < 0) - { - printf("alsa-init: unable to set samplerate-2: %s\n", - snd_strerror(err)); - return(0); - } - -#ifdef BUFFERTIME - { - int alsa_buffer_time = 500000; /* original 60 */ - - if ((err = snd_pcm_hw_params_set_buffer_time_near(alsa_handler, alsa_hwparams, alsa_buffer_time, 0)) < 0) - { - printf("alsa-init: unable to set buffer time near: %s\n", - snd_strerror(err)); - return(0); - } else - alsa_buffer_time = err; - - if ((err = snd_pcm_hw_params_set_period_time_near(alsa_handler, alsa_hwparams, alsa_buffer_time/4, 0)) < 0) - /* original: alsa_buffer_time/ao_data.bps */ - { - printf("alsa-init: unable to set period time: %s\n", - snd_strerror(err)); - return(0); - } -// if (verbose>0) - printf("alsa-init: buffer_time: %d, period_time :%d\n",alsa_buffer_time, err); - } -#endif - -#ifdef SET_CHUNKSIZE - { - //set chunksize - if ((err = snd_pcm_hw_params_set_period_size_near(alsa_handler, alsa_hwparams, chunk_size, 0)) < 0) - { - printf("alsa-init: unable to set periodsize(%d): %s\n", - chunk_size, snd_strerror(err)); - return(0); - } - else // if (verbose>0) { - printf("alsa-init: chunksize set to %i\n", chunk_size); -// } - - //set period_count - if ((period_val = snd_pcm_hw_params_get_periods_max(alsa_hwparams, 0)) < alsa_fragcount) { - alsa_fragcount = period_val; - } - - if (verbose>0) - printf("alsa-init: current val=%i, fragcount=%i\n", period_val, alsa_fragcount); - - if ((err = snd_pcm_hw_params_set_periods_near(alsa_handler, alsa_hwparams, alsa_fragcount, 0)) < 0) { - printf("alsa-init: unable to set periods: %s\n", snd_strerror(err)); - } - } -#endif - - /* finally install hardware parameters */ - if ((err = snd_pcm_hw_params(alsa_handler, alsa_hwparams)) < 0) - { - printf("alsa-init: unable to set hw-parameters: %s\n", - snd_strerror(err)); - return(0); - } - // end setting hw-params - - - // gets buffersize for control - if ((err = snd_pcm_hw_params_get_buffer_size(alsa_hwparams)) < 0) - { - printf("alsa-init: unable to get buffersize: %s\n", snd_strerror(err)); - return(0); - } - else { - ao_data.buffersize = err * bytes_per_sample; - if (verbose>0) - printf("alsa-init: got buffersize=%i\n", ao_data.buffersize); - } - - // setting sw-params (only avail-min) if noblocking mode was choosed - if (ao_noblock) - { - - if ((err = snd_pcm_sw_params_current(alsa_handler, alsa_swparams)) < 0) - { - printf("alsa-init: unable to get parameters: %s\n",snd_strerror(err)); - return(0); - } - - //set min available frames to consider pcm ready (4) - //increased for nonblock-mode should be set dynamically later - if ((err = snd_pcm_sw_params_set_avail_min(alsa_handler, alsa_swparams, 4)) < 0) - { - printf("alsa-init: unable to set avail_min %s\n",snd_strerror(err)); - return(0); - } - - if ((err = snd_pcm_sw_params(alsa_handler, alsa_swparams)) < 0) - { - printf("alsa-init: unable to install sw-params\n"); - return(0); - } - - bits_per_sample = snd_pcm_format_physical_width(alsa_format); - bits_per_frame = bits_per_sample * channels; - chunk_bytes = chunk_size * bits_per_frame / 8; - - if (verbose>0) { - printf("alsa-init: bits per sample (bps)=%i, bits per frame (bpf)=%i, chunk_bytes=%i\n",bits_per_sample,bits_per_frame,chunk_bytes);} - - }//end swparams - - if ((err = snd_pcm_prepare(alsa_handler)) < 0) - { - printf("alsa-init: pcm prepare error: %s\n", snd_strerror(err)); - return(0); - } - - printf("alsa9: %d Hz/%d channels/%d bpf/%d bytes buffer/%s\n", - ao_data.samplerate, ao_data.channels, bytes_per_sample, ao_data.buffersize, - snd_pcm_format_description(alsa_format)); - - } // end switch alsa_handler (spdif) - alsa_can_pause = snd_pcm_hw_params_can_pause(alsa_hwparams); - return(1); -} // end init - - -/* close audio device */ -static void uninit(int immed) -{ - - if (alsa_handler) { - int err; - - if (!ao_noblock) { - if ((err = snd_pcm_drop(alsa_handler)) < 0) - { - printf("alsa-uninit: pcm drop error: %s\n", snd_strerror(err)); - return; - } - } - - if ((err = snd_pcm_close(alsa_handler)) < 0) - { - printf("alsa-uninit: pcm close error: %s\n", snd_strerror(err)); - return; - } - else { - alsa_handler = NULL; - alsa_device = NULL; - printf("alsa-uninit: pcm closed\n"); - } - } - else { - printf("alsa-uninit: no handler defined!\n"); - } -} - -static void audio_pause() -{ - int err; - - if (alsa_can_pause) { - if ((err = snd_pcm_pause(alsa_handler, 1)) < 0) - { - printf("alsa-pause: pcm pause error: %s\n", snd_strerror(err)); - return; - } - if (verbose) - printf("alsa-pause: pause supported by hardware\n"); - } else { - if ((err = snd_pcm_drop(alsa_handler)) < 0) - { - printf("alsa-pause: pcm drop error: %s\n", snd_strerror(err)); - return; - } - } -} - -static void audio_resume() -{ - int err; - - if (alsa_can_pause) { - if ((err = snd_pcm_pause(alsa_handler, 0)) < 0) - { - printf("alsa-resume: pcm resume error: %s\n", snd_strerror(err)); - return; - } - if (verbose) - printf("alsa-resume: resume supported by hardware\n"); - } else { - if ((err = snd_pcm_prepare(alsa_handler)) < 0) - { - printf("alsa-resume: pcm prepare error: %s\n", snd_strerror(err)); - return; - } - } -} - -/* stop playing and empty buffers (for seeking/pause) */ -static void reset() -{ - int err; - - if ((err = snd_pcm_drop(alsa_handler)) < 0) - { - printf("alsa-reset: pcm drop error: %s\n", snd_strerror(err)); - return; - } - if ((err = snd_pcm_prepare(alsa_handler)) < 0) - { - printf("alsa-reset: pcm prepare error: %s\n", snd_strerror(err)); - return; - } - return; -} - -#ifdef USE_POLL -static int wait_for_poll(snd_pcm_t *handle, struct pollfd *ufds, unsigned int count) -{ - unsigned short revents; - - while (1) { - poll(ufds, count, -1); - snd_pcm_poll_descriptors_revents(handle, ufds, count, &revents); - if (revents & POLLERR) - return -EIO; - if (revents & POLLOUT) - return 0; - } -} -#endif - -#ifndef timersub -#define timersub(a, b, result) \ -do { \ - (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ - (result)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ - if ((result)->tv_usec < 0) { \ - --(result)->tv_sec; \ - (result)->tv_usec += 1000000; \ - } \ -} while (0) -#endif - -/* I/O error handler */ -static int xrun(u_char *str_mode) -{ - int err; - snd_pcm_status_t *status; - - snd_pcm_status_alloca(&status); - - if ((err = snd_pcm_status(alsa_handler, status))<0) { - printf("status error: %s", snd_strerror(err)); - return(0); - } - - if (snd_pcm_status_get_state(status) == SND_PCM_STATE_XRUN) { - struct timeval now, diff, tstamp; - gettimeofday(&now, 0); - snd_pcm_status_get_trigger_tstamp(status, &tstamp); - timersub(&now, &tstamp, &diff); - printf("alsa-%s: xrun of at least %.3f msecs. resetting stream\n", - str_mode, - diff.tv_sec * 1000 + diff.tv_usec / 1000.0); - } - - if ((err = snd_pcm_prepare(alsa_handler))<0) { - printf("xrun: prepare error: %s", snd_strerror(err)); - return(0); - } - - return(1); /* ok, data should be accepted again */ -} - -static int play_normal(void* data, int len); -static int play_mmap(void* data, int len); - -static int play(void* data, int len, int flags) -{ - int result; - if (ao_mmap) - result = play_mmap(data, len); - else - result = play_normal(data, len); - - return result; -} - -/* - plays 'len' bytes of 'data' - returns: number of bytes played - modified last at 29.06.02 by jp - thanxs for marius for giving us the light ;) -*/ - -static int play_normal(void* data, int len) -{ - - //bytes_per_sample is always 4 for 2 chn S16_LE - int num_frames = len / bytes_per_sample; - char *output_samples = (char *)data; - snd_pcm_sframes_t res = 0; - - //fprintf(stderr,"alsa-play: frames=%i, len=%i\n",num_frames,len); - - if (!alsa_handler) { - printf("alsa-play: device configuration error"); - return 0; - } - - while (num_frames > 0) { - - res = snd_pcm_writei(alsa_handler, (void *)output_samples, num_frames); - - if (res == -EAGAIN) { - snd_pcm_wait(alsa_handler, 1000); - } - else if (res == -EPIPE) { /* underrun */ - if (xrun("play") <= 0) { - printf("alsa-play: xrun reset error"); - return(0); - } - } - else if (res == -ESTRPIPE) { /* suspend */ - printf("alsa-play: pcm in suspend mode. trying to resume\n"); - while ((res = snd_pcm_resume(alsa_handler)) == -EAGAIN) - sleep(1); - } - else if (res < 0) { - printf("alsa-play: unknown status, trying to reset soundcard\n"); - if ((res = snd_pcm_prepare(alsa_handler)) < 0) { - printf("alsa-play: snd prepare error"); - return(0); - break; - } - } - - if (res > 0) { - - /* output_samples += ao_data.channels * res; */ - output_samples += res * bytes_per_sample; - - num_frames -= res; - } - - } //end while - - if (res < 0) { - printf("alsa-play: write error %s", snd_strerror(res)); - return 0; - } - return res < 0 ? (int)res : len - len % bytes_per_sample; -} - -/* mmap-mode mainly based on descriptions by Joshua Haberman - * 'An overview of the ALSA API' http://people.debian.org/~joshua/x66.html - * and some help by Paul Davis */ - -static int play_mmap(void* data, int len) -{ - snd_pcm_sframes_t commitres, frames_available; - snd_pcm_uframes_t frames_transmit, size, offset; - const snd_pcm_channel_area_t *area; - void *outbuffer; - int err, result; - -#ifdef USE_POLL //seems not really be needed - struct pollfd *ufds; - int count; - - count = snd_pcm_poll_descriptors_count (alsa_handler); - ufds = malloc(sizeof(struct pollfd) * count); - snd_pcm_poll_descriptors(alsa_handler, ufds, count); - - //first wait_for_poll - if (err = (wait_for_poll(alsa_handler, ufds, count) < 0)) { - if (snd_pcm_state(alsa_handler) == SND_PCM_STATE_XRUN || - snd_pcm_state(alsa_handler) == SND_PCM_STATE_SUSPENDED) { - xrun("play"); - } - } -#endif - - outbuffer = alloca(ao_data.buffersize); - - //don't trust get_space() ;) - frames_available = snd_pcm_avail_update(alsa_handler) * bytes_per_sample; - if (frames_available < 0) - xrun("play"); - - if (frames_available < 4) { - if (first) { - first = 0; - snd_pcm_start(alsa_handler); - } - else { //FIXME should break and return 0? - snd_pcm_wait(alsa_handler, -1); - first = 1; - } - } - - /* len is simply the available bufferspace got by get_space() - * but real avail_buffer in frames is ab/bytes_per_sample */ - size = len / bytes_per_sample; - - //if (verbose) - //printf("len: %i size %i, f_avail %i, bps %i ...\n", len, size, frames_available, bytes_per_sample); - - frames_transmit = size; - - /* prepare areas and set sw-pointers - * frames_transmit returns the real available buffer-size - * sometimes != frames_available cause of ringbuffer 'emulation' */ - snd_pcm_mmap_begin(alsa_handler, &area, &offset, &frames_transmit); - - /* this is specific to interleaved streams (or non-interleaved - * streams with only one channel) */ - outbuffer = ((char *) area->addr + (area->first + area->step * offset) / 8); //8 - - //write data - memcpy(outbuffer, data, (frames_transmit * bytes_per_sample)); - - commitres = snd_pcm_mmap_commit(alsa_handler, offset, frames_transmit); - - if (commitres < 0 || commitres != frames_transmit) { - if (snd_pcm_state(alsa_handler) == SND_PCM_STATE_XRUN || - snd_pcm_state(alsa_handler) == SND_PCM_STATE_SUSPENDED) { - xrun("play"); - } - } - - //if (verbose) - //printf("mmap ft: %i, cres: %i\n", frames_transmit, commitres); - - /* err = snd_pcm_area_copy(&area, offset, &data, offset, len, alsa_format); */ - /* if (err < 0) { */ - /* printf("area-copy-error\n"); */ - /* return 0; */ - /* } */ - - - //calculate written frames! - result = commitres * bytes_per_sample; - - - /* if (verbose) { */ - /* if (len == result) */ - /* printf("result: %i, frames written: %i ...\n", result, frames_transmit); */ - /* else */ - /* printf("result: %i, frames written: %i, result != len ...\n", result, frames_transmit); */ - /* } */ - - //mplayer doesn't like -result - if (result < 0) - result = 0; - -#ifdef USE_POLL - free(ufds); -#endif - - return result; -} - -/* how many byes are free in the buffer */ -static int get_space() -{ - snd_pcm_status_t *status; - int ret; - char *str_status; - - //snd_pcm_sframes_t avail_frames = 0; - - if ((ret = snd_pcm_status_malloc(&status)) < 0) - { - printf("alsa-space: memory allocation error: %s\n", snd_strerror(ret)); - return(0); - } - - if ((ret = snd_pcm_status(alsa_handler, status)) < 0) - { - printf("alsa-space: cannot get pcm status: %s\n", snd_strerror(ret)); - return(0); - } - - switch(snd_pcm_status_get_state(status)) - { - case SND_PCM_STATE_OPEN: - str_status = "open"; - case SND_PCM_STATE_PREPARED: - if (str_status != "open") { - str_status = "prepared"; - first = 1; - ret = snd_pcm_status_get_avail(status) * bytes_per_sample; - if (ret == 0) //ugly workaround for hang in mmap-mode - ret = 10; - break; - } - case SND_PCM_STATE_RUNNING: - ret = snd_pcm_status_get_avail(status) * bytes_per_sample; - //avail_frames = snd_pcm_avail_update(alsa_handler) * bytes_per_sample; - if (str_status != "open" && str_status != "prepared") - str_status = "running"; - break; - case SND_PCM_STATE_PAUSED: - if (verbose>0) printf("alsa-space: paused"); - str_status = "paused"; - ret = 0; - break; - case SND_PCM_STATE_XRUN: - xrun("space"); - str_status = "xrun"; - first = 1; - ret = 0; - break; - default: - str_status = "undefined"; - ret = snd_pcm_status_get_avail(status) * bytes_per_sample; - if (ret <= 0) { - xrun("space"); - } - } - - if (verbose>0 && str_status != "running") - printf("alsa-space: free space = %i, status=%i, %s --\n", ret, status, str_status); - snd_pcm_status_free(status); - - if (ret < 0) { - printf("negative value!!\n"); - ret = 0; - } - - // workaround for too small value returned - if (ret < MIN_CHUNK_SIZE) - ret = 0; - - return(ret); -} - -/* delay in seconds between first and last sample in buffer */ -static float get_delay() -{ - - if (alsa_handler) { - - snd_pcm_status_t *status; - float ret; - - if ((ret = snd_pcm_status_malloc(&status)) < 0) - { - printf("alsa-delay: memory allocation error: %s\n", snd_strerror(ret)); - return(0); - } - - if ((ret = snd_pcm_status(alsa_handler, status)) < 0) - { - printf("alsa-delay: cannot get pcm status: %s\n", snd_strerror(ret)); - return(0); - } - - switch(snd_pcm_status_get_state(status)) - { - case SND_PCM_STATE_OPEN: - case SND_PCM_STATE_PREPARED: - case SND_PCM_STATE_RUNNING: - ret = (float)snd_pcm_status_get_delay(status)/(float)ao_data.samplerate; - break; - default: - ret = 0; - } - - snd_pcm_status_free(status); - - if (ret < 0) -