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-rw-r--r--src/audioOutputs/audioOutput_mvp.c296
1 files changed, 296 insertions, 0 deletions
diff --git a/src/audioOutputs/audioOutput_mvp.c b/src/audioOutputs/audioOutput_mvp.c
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+++ b/src/audioOutputs/audioOutput_mvp.c
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+/* the Music Player Daemon (MPD)
+ * (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu)
+ * This project's homepage is: http://www.musicpd.org
+ *
+ * Media MVP audio output based on code from MVPMC project:
+ * http://mvpmc.sourceforge.net/
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "../audioOutput.h"
+
+#include <stdlib.h>
+
+#ifdef HAVE_MVP
+
+#include "../conf.h"
+#include "../log.h"
+#include "../sig_handlers.h"
+
+#include <string.h>
+#include <assert.h>
+#include <signal.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+typedef struct {
+ unsigned long dsp_status;
+ unsigned long stream_decode_type;
+ unsigned long sample_rate;
+ unsigned long bit_rate;
+ unsigned long raw[64/sizeof(unsigned long)];
+} aud_status_t;
+
+#define MVP_SET_AUD_STOP _IOW('a',1,int)
+#define MVP_SET_AUD_PLAY _IOW('a',2,int)
+#define MVP_SET_AUD_PAUSE _IOW('a',3,int)
+#define MVP_SET_AUD_UNPAUSE _IOW('a',4,int)
+#define MVP_SET_AUD_SRC _IOW('a',5,int)
+#define MVP_SET_AUD_MUTE _IOW('a',6,int)
+#define MVP_SET_AUD_BYPASS _IOW('a',8,int)
+#define MVP_SET_AUD_CHANNEL _IOW('a',9,int)
+#define MVP_GET_AUD_STATUS _IOR('a',10,aud_status_t)
+#define MVP_SET_AUD_VOLUME _IOW('a',13,int)
+#define MVP_GET_AUD_VOLUME _IOR('a',14,int)
+#define MVP_SET_AUD_STREAMTYPE _IOW('a',15,int)
+#define MVP_SET_AUD_FORMAT _IOW('a',16,int)
+#define MVP_GET_AUD_SYNC _IOR('a',21,pts_sync_data_t*)
+#define MVP_SET_AUD_STC _IOW('a',22,long long int *)
+#define MVP_SET_AUD_SYNC _IOW('a',23,int)
+#define MVP_SET_AUD_END_STREAM _IOW('a',25,int)
+#define MVP_SET_AUD_RESET _IOW('a',26,int)
+#define MVP_SET_AUD_DAC_CLK _IOW('a',27,int)
+#define MVP_GET_AUD_REGS _IOW('a',28,aud_ctl_regs_t*)
+
+
+typedef struct _MvpData {
+ int fd;
+} MvpData;
+
+static int pcmfrequencies[][3] = {
+ {9 ,8000 ,32000},
+ {10,11025,44100},
+ {11,12000,48000},
+ {1 ,16000,32000},
+ {2 ,22050,44100},
+ {3 ,24000,48000},
+ {5 ,32000,32000},
+ {0 ,44100,44100},
+ {7 ,48000,48000},
+ {13,64000,32000},
+ {14,88200,44100},
+ {15,96000,48000}};
+
+static int numfrequencies = sizeof(pcmfrequencies)/12;
+
+static int mvp_testDefault() {
+ int fd;
+
+ fd = open("/dev/adec_pcm", O_WRONLY);
+
+ if(fd) {
+ close(fd);
+ return 0;
+ }
+
+ WARNING("Error opening PCM device \"/dev/adec_pcm\": %s\n",
+ strerror(errno));
+
+ return -1;
+}
+
+static int mvp_initDriver(AudioOutput * audioOutput, ConfigParam * param) {
+ MvpData * md = malloc(sizeof(MvpData));
+ md->fd = -1;
+ audioOutput->data = md;
+
+ return 0;
+}
+
+static void mvp_finishDriver(AudioOutput * audioOutput) {
+ MvpData *md = audioOutput->data;
+ free(md);
+}
+
+static int mvp_setPcmParams(MvpData *md, unsigned long rate, int channels, int big_endian, int bits){
+ int iloop;
+ int mix[5];
+
+ if (channels == 1)
+ mix[0] = 1;
+ else if (channels == 2)
+ mix[0] = 0;
+ else
+ return -1;
+
+ /* 0,1=24bit(24) , 2,3=16bit */
+ if (bits == 16)
+ mix[1] = 2;
+ else if (bits == 24)
+ mix[1] = 0;
+ else
+ return -1;
+
+ mix[3] = 0; /* stream type? */
+
+ if (big_endian == 1)
+ mix[4] = 1;
+ else if (big_endian == 0)
+ mix[4] = 0;
+ else
+ return -1;
+
+ /*
+ * if there is an exact match for the frequency, use it.
+ */
+ for(iloop = 0;iloop<numfrequencies;iloop++)
+ {
+ if(rate == pcmfrequencies[iloop][1])
+ {
+ mix[2] = pcmfrequencies[iloop][0];
+ break;
+ }
+ }
+
+ if (iloop >= numfrequencies) {
+ ERROR("Can not find suitable output frequency for %ld\n",
+ rate);
+ return -1;
+ }
+
+ if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0){
+ ERROR("Can not set audio format\n");
+ return -1;
+ }
+
+ if (ioctl(md->fd, MVP_SET_AUD_SYNC, 2) != 0){
+ ERROR("Can not set audio sync\n");
+ return -1;
+ }
+
+ if (ioctl(md->fd, MVP_SET_AUD_PLAY, 0) < 0){
+ ERROR("Can not set audio play mode\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int mvp_openDevice(AudioOutput * audioOutput)
+{
+ int ret = -1;
+ MvpData * md = audioOutput->data;
+ AudioFormat * audioFormat = &audioOutput->outAudioFormat;
+ int mix[5] = { 0, 2, 7, 1, 0 };
+
+ if ((md->fd=open("/dev/adec_pcm",
+ O_RDWR|O_NONBLOCK)) < 0){
+ ERROR("Error opening /dev/adec_pcm: %s\n", strerror(errno));
+ return -1;
+ }
+ if (ioctl(md->fd, MVP_SET_AUD_SRC, 1) < 0){
+ ERROR("Error setting audio source: %s\n", strerror(errno));
+ return -1;
+ }
+ if (ioctl(md->fd, MVP_SET_AUD_STREAMTYPE, 0) < 0){
+ ERROR("Error setting audio streamtype: %s\n", strerror(errno));
+ return -1;
+ }
+ if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0){
+ ERROR("Error setting audio format: %s\n", strerror(errno));
+ return -1;
+ }
+ long long int stc = 0;
+ ioctl(md->fd, MVP_SET_AUD_STC, &stc);
+ if (ioctl(md->fd, MVP_SET_AUD_BYPASS, 1) < 0){
+ ERROR("Error setting audio streamtype: %s\n", strerror(errno));
+ return -1;
+ }
+#ifdef WORDS_BIGENDIAN
+ mvp_setPcmParams(md, audioFormat->sampleRate, audioFormat->channels, 0, audioFormat->bits);
+#else
+ mvp_setPcmParams(md, audioFormat->sampleRate, audioFormat->channels, 1, audioFormat->bits);
+#endif
+ audioOutput->open = 1;
+ return 0;
+}
+
+static void mvp_closeDevice(AudioOutput * audioOutput) {
+ MvpData * md = audioOutput->data;
+ if(md->fd >= 0) close(md->fd);
+ md->fd = -1;
+ audioOutput->open = 0;
+}
+
+static void mvp_dropBufferedAudio(AudioOutput * audioOutput) {
+ MvpData * md = audioOutput->data;
+ if(md->fd >=0){
+ ioctl(md->fd, MVP_SET_AUD_RESET, 0x11);
+ close(md->fd);
+ md->fd = -1;
+ audioOutput->open = 0;
+ }
+}
+
+static int mvp_playAudio(AudioOutput * audioOutput, char * playChunk,
+ int size)
+{
+ MvpData * md = audioOutput->data;
+ int ret;
+
+ /* reopen the device since it was closed by dropBufferedAudio */
+ if(md->fd < 0) mvp_openDevice(audioOutput);
+
+ while (size > 0) {
+ ret = write(md->fd, playChunk, size);
+ if(ret<0) {
+ if(errno == EINTR) continue;
+ ERROR("closing mvp PCM device due to write error: "
+ "%s\n", strerror(errno));
+ mvp_closeDevice(audioOutput);
+ return -1;
+ }
+ playChunk += ret;
+ size -= ret;
+ }
+ return 0;
+}
+
+AudioOutputPlugin mvpPlugin =
+{
+ "mvp",
+ mvp_testDefault,
+ mvp_initDriver,
+ mvp_finishDriver,
+ mvp_openDevice,
+ mvp_playAudio,
+ mvp_dropBufferedAudio,
+ mvp_closeDevice,
+ NULL /* sendMetadataFunc */
+};
+
+#else /* HAVE_MVP */
+
+AudioOutputPlugin mvpPlugin =
+{
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL /* sendMetadataFunc */
+};
+
+#endif /* HAVE_MVP */
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 15:54:46 +0000