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https://github.com/mpv-player/mpv
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SUN-Solaris audio out
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1042 b3059339-0415-0410-9bf9-f77b7e298cf2
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arpi_esp
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d5925fe568
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223
libao2/ao_sun.c
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223
libao2/ao_sun.c
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/audioio.h>
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#ifdef __svr4__
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#include <stropts.h>
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#endif
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#include "../config.h"
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#include "audio_out.h"
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#include "audio_out_internal.h"
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static ao_info_t info =
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{
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"Sun audio output",
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"sun",
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"jk@tools.de",
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""
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};
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LIBAO_EXTERN(sun)
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#ifndef AUDIO_PRECISION_8
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#define AUDIO_PRECISION_8 8
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#define AUDIO_PRECISION_16 16
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#endif
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// there are some globals:
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// ao_samplerate
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// ao_channels
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// ao_format
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// ao_bps
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// ao_outburst
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// ao_buffersize
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static char *dsp="/dev/audio";
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static int queued_bursts = 0;
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static int audio_fd=-1;
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// to set/get/query special features/parameters
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static int control(int cmd,int arg){
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switch(cmd){
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case AOCONTROL_SET_DEVICE:
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dsp=(char*)arg;
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return CONTROL_OK;
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case AOCONTROL_QUERY_FORMAT:
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return CONTROL_TRUE;
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}
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return CONTROL_UNKNOWN;
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}
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// open & setup audio device
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// return: 1=success 0=fail
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static int init(int rate,int channels,int format,int flags){
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audio_info_t info;
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int byte_per_sec;
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printf("ao2: %d Hz %d chans 0x%X\n",rate,channels,format);
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audio_fd=open(dsp, O_WRONLY);
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if(audio_fd<0){
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printf("Can't open audio device %s -> nosound\n",dsp);
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return 0;
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}
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ioctl(audio_fd, AUDIO_DRAIN, 0);
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AUDIO_INITINFO(&info);
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info.play.encoding = ao_format = format;
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info.play.precision = (format==AUDIO_ENCODING_LINEAR? AUDIO_PRECISION_16:AUDIO_PRECISION_8);
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info.play.channels = ao_channels = channels;
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--ao_channels;
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info.play.sample_rate = ao_samplerate = rate;
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info.play.samples = 0;
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info.play.eof = 0;
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if(ioctl (audio_fd, AUDIO_SETINFO, &info)<0)
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printf("audio_setup: your card doesn't support %d Hz samplerate\n",rate);
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byte_per_sec = (channels
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* (format==AUDIO_ENCODING_LINEAR ? 16 : 8)
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* rate);
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ao_outburst=byte_per_sec > 100000 ? 16384 : 8192;
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queued_bursts = 0;
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if(ao_buffersize==-1){
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// Measuring buffer size:
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void* data;
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ao_buffersize=0;
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#ifdef HAVE_AUDIO_SELECT
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data=malloc(ao_outburst); memset(data,0,ao_outburst);
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while(ao_buffersize<0x40000){
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fd_set rfds;
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struct timeval tv;
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FD_ZERO(&rfds); FD_SET(audio_fd,&rfds);
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tv.tv_sec=0; tv.tv_usec = 0;
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if(!select(audio_fd+1, NULL, &rfds, NULL, &tv)) break;
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write(audio_fd,data,ao_outburst);
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ao_buffersize+=ao_outburst;
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}
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free(data);
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if(ao_buffersize==0){
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printf("\n *** Your audio driver DOES NOT support select() ***\n");
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printf("Recompile mplayer with #undef HAVE_AUDIO_SELECT in config.h !\n\n");
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return 0;
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}
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#ifdef __svr4__
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ioctl(audio_fd, I_FLUSH, FLUSHW);
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#endif
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ioctl(audio_fd, AUDIO_DRAIN, 0);
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#endif
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}
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return 1;
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}
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// close audio device
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static void uninit(){
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close(audio_fd);
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}
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// stop playing and empty buffers (for seeking/pause)
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static void reset(){
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audio_info_t info;
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#ifdef __svr4__
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ioctl(audio_fd, I_FLUSH, FLUSHW);
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#endif
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uninit();
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audio_fd=open(dsp, O_WRONLY);
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if(audio_fd<0){
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printf("\nFatal error: *** CANNOT RE-OPEN / RESET AUDIO DEVICE ***\n");
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return;
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}
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ioctl(audio_fd, AUDIO_DRAIN, 0);
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AUDIO_INITINFO(&info);
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info.play.encoding = ao_format;
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info.play.precision = (ao_format==AUDIO_ENCODING_LINEAR? AUDIO_PRECISION_16:AUDIO_PRECISION_8);
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info.play.channels = ao_channels+1;
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info.play.sample_rate = ao_samplerate;
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info.play.samples = 0;
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info.play.eof = 0;
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ioctl (audio_fd, AUDIO_SETINFO, &info);
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queued_bursts = 0;
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}
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// stop playing, keep buffers (for pause)
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static void audio_pause()
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{
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struct audio_info info;
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AUDIO_INITINFO(&info);
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info.play.pause = 1;
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ioctl(audio_fd, AUDIO_SETINFO, &info);
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}
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// resume playing, after audio_pause()
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static void audio_resume()
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{
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struct audio_info info;
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AUDIO_INITINFO(&info);
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info.play.pause = 0;
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ioctl(audio_fd, AUDIO_SETINFO, &info);
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}
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// return: how many bytes can be played without blocking
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static int get_space(){
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int playsize=ao_outburst;
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// check buffer
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#ifdef HAVE_AUDIO_SELECT
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{ fd_set rfds;
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struct timeval tv;
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FD_ZERO(&rfds);
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FD_SET(audio_fd, &rfds);
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tv.tv_sec = 0;
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tv.tv_usec = 0;
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if(!select(audio_fd+1, NULL, &rfds, NULL, &tv)) return 0; // not block!
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}
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#endif
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{
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audio_info_t info;
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ioctl(audio_fd, AUDIO_GETINFO, &info);
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if(queued_bursts - info.play.eof > 2)
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return 0;
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}
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return ao_outburst;
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}
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// plays 'len' bytes of 'data'
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// it should round it down to outburst*n
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// return: number of bytes played
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static int play(void* data,int len,int flags){
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len/=ao_outburst;
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len=write(audio_fd,data,len*ao_outburst);
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if(len>0) {
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queued_bursts ++;
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write(audio_fd,data,0);
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}
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return len;
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}
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static int audio_delay_method=2;
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// return: how many unplayed bytes are in the buffer
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static int get_delay(){
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int q;
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audio_info_t info;
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ioctl(audio_fd, AUDIO_GETINFO, &info);
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return (queued_bursts - info.play.eof) * ao_outburst;
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}
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