cb8f1af3bd
This will make refactoring features easier, especially now that pthreads support and larger refactorings are on the horizon. Hopefully, this will make porting to other platforms (even non-UNIX-like ones for masochists) easier, too. os_compat.h will house all the #includes for system headers considered to be the "core" of MPD. Headers for optional features will be left to individual source files. git-svn-id: https://svn.musicpd.org/mpd/trunk@7130 09075e82-0dd4-0310-85a5-a0d7c8717e4f
275 lines
6.5 KiB
C
275 lines
6.5 KiB
C
/* the Music Player Daemon (MPD)
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* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
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* This project's homepage is: http://www.musicpd.org
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*
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* Media MVP audio output based on code from MVPMC project:
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* http://mvpmc.sourceforge.net/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "../audioOutput.h"
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#include "../os_compat.h"
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#ifdef HAVE_MVP
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#include "../conf.h"
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#include "../log.h"
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typedef struct {
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unsigned long dsp_status;
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unsigned long stream_decode_type;
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unsigned long sample_rate;
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unsigned long bit_rate;
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unsigned long raw[64 / sizeof(unsigned long)];
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} aud_status_t;
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#define MVP_SET_AUD_STOP _IOW('a',1,int)
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#define MVP_SET_AUD_PLAY _IOW('a',2,int)
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#define MVP_SET_AUD_PAUSE _IOW('a',3,int)
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#define MVP_SET_AUD_UNPAUSE _IOW('a',4,int)
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#define MVP_SET_AUD_SRC _IOW('a',5,int)
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#define MVP_SET_AUD_MUTE _IOW('a',6,int)
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#define MVP_SET_AUD_BYPASS _IOW('a',8,int)
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#define MVP_SET_AUD_CHANNEL _IOW('a',9,int)
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#define MVP_GET_AUD_STATUS _IOR('a',10,aud_status_t)
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#define MVP_SET_AUD_VOLUME _IOW('a',13,int)
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#define MVP_GET_AUD_VOLUME _IOR('a',14,int)
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#define MVP_SET_AUD_STREAMTYPE _IOW('a',15,int)
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#define MVP_SET_AUD_FORMAT _IOW('a',16,int)
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#define MVP_GET_AUD_SYNC _IOR('a',21,pts_sync_data_t*)
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#define MVP_SET_AUD_STC _IOW('a',22,long long int *)
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#define MVP_SET_AUD_SYNC _IOW('a',23,int)
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#define MVP_SET_AUD_END_STREAM _IOW('a',25,int)
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#define MVP_SET_AUD_RESET _IOW('a',26,int)
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#define MVP_SET_AUD_DAC_CLK _IOW('a',27,int)
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#define MVP_GET_AUD_REGS _IOW('a',28,aud_ctl_regs_t*)
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typedef struct _MvpData {
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int fd;
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} MvpData;
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static int pcmfrequencies[][3] = {
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{9, 8000, 32000},
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{10, 11025, 44100},
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{11, 12000, 48000},
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{1, 16000, 32000},
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{2, 22050, 44100},
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{3, 24000, 48000},
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{5, 32000, 32000},
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{0, 44100, 44100},
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{7, 48000, 48000},
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{13, 64000, 32000},
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{14, 88200, 44100},
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{15, 96000, 48000}
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};
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static int numfrequencies = sizeof(pcmfrequencies) / 12;
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static int mvp_testDefault(void)
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{
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int fd;
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fd = open("/dev/adec_pcm", O_WRONLY);
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if (fd) {
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close(fd);
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return 0;
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}
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WARNING("Error opening PCM device \"/dev/adec_pcm\": %s\n",
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strerror(errno));
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return -1;
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}
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static int mvp_initDriver(AudioOutput * audioOutput, ConfigParam * param)
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{
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MvpData *md = xmalloc(sizeof(MvpData));
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md->fd = -1;
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audioOutput->data = md;
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return 0;
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}
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static void mvp_finishDriver(AudioOutput * audioOutput)
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{
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MvpData *md = audioOutput->data;
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free(md);
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}
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static int mvp_setPcmParams(MvpData * md, unsigned long rate, int channels,
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int big_endian, int bits)
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{
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int iloop;
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int mix[5];
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if (channels == 1)
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mix[0] = 1;
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else if (channels == 2)
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mix[0] = 0;
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else
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return -1;
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/* 0,1=24bit(24) , 2,3=16bit */
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if (bits == 16)
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mix[1] = 2;
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else if (bits == 24)
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mix[1] = 0;
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else
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return -1;
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mix[3] = 0; /* stream type? */
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if (big_endian == 1)
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mix[4] = 1;
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else if (big_endian == 0)
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mix[4] = 0;
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else
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return -1;
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/*
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* if there is an exact match for the frequency, use it.
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*/
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for (iloop = 0; iloop < numfrequencies; iloop++) {
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if (rate == pcmfrequencies[iloop][1]) {
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mix[2] = pcmfrequencies[iloop][0];
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break;
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}
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}
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if (iloop >= numfrequencies) {
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ERROR("Can not find suitable output frequency for %ld\n", rate);
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return -1;
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}
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if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0) {
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ERROR("Can not set audio format\n");
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return -1;
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}
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if (ioctl(md->fd, MVP_SET_AUD_SYNC, 2) != 0) {
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ERROR("Can not set audio sync\n");
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return -1;
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}
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if (ioctl(md->fd, MVP_SET_AUD_PLAY, 0) < 0) {
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ERROR("Can not set audio play mode\n");
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return -1;
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}
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return 0;
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}
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static int mvp_openDevice(AudioOutput * audioOutput)
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{
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long long int stc = 0;
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MvpData *md = audioOutput->data;
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AudioFormat *audioFormat = &audioOutput->outAudioFormat;
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int mix[5] = { 0, 2, 7, 1, 0 };
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if ((md->fd = open("/dev/adec_pcm", O_RDWR | O_NONBLOCK)) < 0) {
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ERROR("Error opening /dev/adec_pcm: %s\n", strerror(errno));
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return -1;
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}
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if (ioctl(md->fd, MVP_SET_AUD_SRC, 1) < 0) {
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ERROR("Error setting audio source: %s\n", strerror(errno));
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return -1;
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}
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if (ioctl(md->fd, MVP_SET_AUD_STREAMTYPE, 0) < 0) {
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ERROR("Error setting audio streamtype: %s\n", strerror(errno));
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return -1;
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}
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if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0) {
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ERROR("Error setting audio format: %s\n", strerror(errno));
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return -1;
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}
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ioctl(md->fd, MVP_SET_AUD_STC, &stc);
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if (ioctl(md->fd, MVP_SET_AUD_BYPASS, 1) < 0) {
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ERROR("Error setting audio streamtype: %s\n", strerror(errno));
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return -1;
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}
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#ifdef WORDS_BIGENDIAN
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mvp_setPcmParams(md, audioFormat->sampleRate, audioFormat->channels, 0,
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audioFormat->bits);
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#else
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mvp_setPcmParams(md, audioFormat->sampleRate, audioFormat->channels, 1,
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audioFormat->bits);
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#endif
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audioOutput->open = 1;
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return 0;
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}
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static void mvp_closeDevice(AudioOutput * audioOutput)
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{
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MvpData *md = audioOutput->data;
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if (md->fd >= 0)
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close(md->fd);
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md->fd = -1;
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audioOutput->open = 0;
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}
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static void mvp_dropBufferedAudio(AudioOutput * audioOutput)
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{
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MvpData *md = audioOutput->data;
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if (md->fd >= 0) {
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ioctl(md->fd, MVP_SET_AUD_RESET, 0x11);
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close(md->fd);
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md->fd = -1;
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audioOutput->open = 0;
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}
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}
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static int mvp_playAudio(AudioOutput * audioOutput, char *playChunk, int size)
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{
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MvpData *md = audioOutput->data;
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int ret;
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/* reopen the device since it was closed by dropBufferedAudio */
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if (md->fd < 0)
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mvp_openDevice(audioOutput);
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while (size > 0) {
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ret = write(md->fd, playChunk, size);
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if (ret < 0) {
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if (errno == EINTR)
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continue;
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ERROR("closing mvp PCM device due to write error: "
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"%s\n", strerror(errno));
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mvp_closeDevice(audioOutput);
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return -1;
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}
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playChunk += ret;
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size -= ret;
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}
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return 0;
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}
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AudioOutputPlugin mvpPlugin = {
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"mvp",
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mvp_testDefault,
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mvp_initDriver,
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mvp_finishDriver,
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mvp_openDevice,
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mvp_playAudio,
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mvp_dropBufferedAudio,
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mvp_closeDevice,
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NULL, /* sendMetadataFunc */
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};
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#else /* HAVE_MVP */
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DISABLED_AUDIO_OUTPUT_PLUGIN(mvpPlugin)
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#endif /* HAVE_MVP */
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