From 96d03d719dd02784932d4782f1c861708c4324d6 Mon Sep 17 00:00:00 2001 From: arpi_esp Date: Wed, 6 Jun 2001 19:10:47 +0000 Subject: SUN-Solaris audio out git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@1042 b3059339-0415-0410-9bf9-f77b7e298cf2 --- libao2/ao_sun.c | 223 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 223 insertions(+) create mode 100644 libao2/ao_sun.c (limited to 'libao2/ao_sun.c') diff --git a/libao2/ao_sun.c b/libao2/ao_sun.c new file mode 100644 index 0000000000..93218dff2e --- /dev/null +++ b/libao2/ao_sun.c @@ -0,0 +1,223 @@ +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#ifdef __svr4__ +#include +#endif + +#include "../config.h" + +#include "audio_out.h" +#include "audio_out_internal.h" + +static ao_info_t info = +{ + "Sun audio output", + "sun", + "jk@tools.de", + "" +}; + +LIBAO_EXTERN(sun) + + +#ifndef AUDIO_PRECISION_8 +#define AUDIO_PRECISION_8 8 +#define AUDIO_PRECISION_16 16 +#endif + + +// there are some globals: +// ao_samplerate +// ao_channels +// ao_format +// ao_bps +// ao_outburst +// ao_buffersize + +static char *dsp="/dev/audio"; +static int queued_bursts = 0; +static int audio_fd=-1; + +// to set/get/query special features/parameters +static int control(int cmd,int arg){ + switch(cmd){ + case AOCONTROL_SET_DEVICE: + dsp=(char*)arg; + return CONTROL_OK; + case AOCONTROL_QUERY_FORMAT: + return CONTROL_TRUE; + } + return CONTROL_UNKNOWN; +} + +// open & setup audio device +// return: 1=success 0=fail +static int init(int rate,int channels,int format,int flags){ + + audio_info_t info; + int byte_per_sec; + + printf("ao2: %d Hz %d chans 0x%X\n",rate,channels,format); + + audio_fd=open(dsp, O_WRONLY); + if(audio_fd<0){ + printf("Can't open audio device %s -> nosound\n",dsp); + return 0; + } + + ioctl(audio_fd, AUDIO_DRAIN, 0); + + AUDIO_INITINFO(&info); + info.play.encoding = ao_format = format; + info.play.precision = (format==AUDIO_ENCODING_LINEAR? AUDIO_PRECISION_16:AUDIO_PRECISION_8); + info.play.channels = ao_channels = channels; + --ao_channels; + info.play.sample_rate = ao_samplerate = rate; + info.play.samples = 0; + info.play.eof = 0; + if(ioctl (audio_fd, AUDIO_SETINFO, &info)<0) + printf("audio_setup: your card doesn't support %d Hz samplerate\n",rate); + byte_per_sec = (channels + * (format==AUDIO_ENCODING_LINEAR ? 16 : 8) + * rate); + ao_outburst=byte_per_sec > 100000 ? 16384 : 8192; + queued_bursts = 0; + + if(ao_buffersize==-1){ + // Measuring buffer size: + void* data; + ao_buffersize=0; +#ifdef HAVE_AUDIO_SELECT + data=malloc(ao_outburst); memset(data,0,ao_outburst); + while(ao_buffersize<0x40000){ + fd_set rfds; + struct timeval tv; + FD_ZERO(&rfds); FD_SET(audio_fd,&rfds); + tv.tv_sec=0; tv.tv_usec = 0; + if(!select(audio_fd+1, NULL, &rfds, NULL, &tv)) break; + write(audio_fd,data,ao_outburst); + ao_buffersize+=ao_outburst; + } + free(data); + if(ao_buffersize==0){ + printf("\n *** Your audio driver DOES NOT support select() ***\n"); + printf("Recompile mplayer with #undef HAVE_AUDIO_SELECT in config.h !\n\n"); + return 0; + } +#ifdef __svr4__ + ioctl(audio_fd, I_FLUSH, FLUSHW); +#endif + ioctl(audio_fd, AUDIO_DRAIN, 0); +#endif + } + + return 1; +} + +// close audio device +static void uninit(){ + close(audio_fd); +} + +// stop playing and empty buffers (for seeking/pause) +static void reset(){ + audio_info_t info; + +#ifdef __svr4__ + ioctl(audio_fd, I_FLUSH, FLUSHW); +#endif + uninit(); + audio_fd=open(dsp, O_WRONLY); + if(audio_fd<0){ + printf("\nFatal error: *** CANNOT RE-OPEN / RESET AUDIO DEVICE ***\n"); + return; + } + + ioctl(audio_fd, AUDIO_DRAIN, 0); + + AUDIO_INITINFO(&info); + info.play.encoding = ao_format; + info.play.precision = (ao_format==AUDIO_ENCODING_LINEAR? AUDIO_PRECISION_16:AUDIO_PRECISION_8); + info.play.channels = ao_channels+1; + info.play.sample_rate = ao_samplerate; + info.play.samples = 0; + info.play.eof = 0; + ioctl (audio_fd, AUDIO_SETINFO, &info); + queued_bursts = 0; +} + +// stop playing, keep buffers (for pause) +static void audio_pause() +{ + struct audio_info info; + AUDIO_INITINFO(&info); + info.play.pause = 1; + ioctl(audio_fd, AUDIO_SETINFO, &info); +} + +// resume playing, after audio_pause() +static void audio_resume() +{ + struct audio_info info; + AUDIO_INITINFO(&info); + info.play.pause = 0; + ioctl(audio_fd, AUDIO_SETINFO, &info); +} + + +// return: how many bytes can be played without blocking +static int get_space(){ + int playsize=ao_outburst; + + // check buffer +#ifdef HAVE_AUDIO_SELECT + { fd_set rfds; + struct timeval tv; + FD_ZERO(&rfds); + FD_SET(audio_fd, &rfds); + tv.tv_sec = 0; + tv.tv_usec = 0; + if(!select(audio_fd+1, NULL, &rfds, NULL, &tv)) return 0; // not block! + } +#endif + + { + audio_info_t info; + ioctl(audio_fd, AUDIO_GETINFO, &info); + if(queued_bursts - info.play.eof > 2) + return 0; + } + return ao_outburst; +} + +// plays 'len' bytes of 'data' +// it should round it down to outburst*n +// return: number of bytes played +static int play(void* data,int len,int flags){ + len/=ao_outburst; + len=write(audio_fd,data,len*ao_outburst); + if(len>0) { + queued_bursts ++; + write(audio_fd,data,0); + } + return len; +} + +static int audio_delay_method=2; + +// return: how many unplayed bytes are in the buffer +static int get_delay(){ + int q; + audio_info_t info; + ioctl(audio_fd, AUDIO_GETINFO, &info); + return (queued_bursts - info.play.eof) * ao_outburst; +} + -- cgit v1.2.3