ao_mpegpes

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2709 b3059339-0415-0410-9bf9-f77b7e298cf2

libao2/Makefile

@@ -4,7 +4,7 @@ include config.mak
 LIBNAME = libao2.a
 
 # TODO: moveout ao_sdl.c so it's only used when SDL is detected
-SRCS=audio_out.c ao_null.c ao_pcm.c $(OPTIONAL_SRCS)
+SRCS=audio_out.c ao_mpegpes.c ao_null.c ao_pcm.c $(OPTIONAL_SRCS)
 OBJS=$(SRCS:.c=.o)
 
 CFLAGS  = $(OPTFLAGS) -I. -I.. $(SDL_INC) $(EXTRA_INC)

libao2/ao_mpegpes.c

@@ -0,0 +1,98 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "audio_out.h"
+#include "audio_out_internal.h"
+
+#include "afmt.h"
+
+static ao_info_t info = 
+{
+	"mpeg-pes audio output",
+	"mpegpes",
+	"A'rpi",
+	""
+};
+
+LIBAO_EXTERN(mpegpes)
+
+// there are some globals:
+// ao_samplerate
+// ao_channels
+// ao_format
+// ao_bps
+// ao_outburst
+// ao_buffersize
+
+// to set/get/query special features/parameters
+static int control(int cmd,int arg){
+    return -1;
+}
+
+// open & setup audio device
+// return: 1=success 0=fail
+static int init(int rate,int channels,int format,int flags){
+
+    ao_outburst=2000;
+    ao_format=format;
+
+    return 1;
+}
+
+// close audio device
+static void uninit(){
+
+}
+
+// stop playing and empty buffers (for seeking/pause)
+static void reset(){
+
+}
+
+// stop playing, keep buffers (for pause)
+static void audio_pause()
+{
+    // for now, just call reset();
+    reset();
+}
+
+// resume playing, after audio_pause()
+static void audio_resume()
+{
+}
+
+void send_pes_packet(unsigned char* data,int len,int id,int timestamp);
+void send_lpcm_packet(unsigned char* data,int len,int id,int timestamp);
+extern int vo_pts;
+
+// return: how many bytes can be played without blocking
+static int get_space(){
+    float x=(float)(vo_pts-ao_pts)/90000.0-0.5;
+    int y;
+    if(x<=0) return 0;
+    y=48000*4*x;y/=ao_outburst;y*=ao_outburst;
+//    printf("diff: %5.3f -> %d  \n",x,y);
+    return y;
+}
+
+// 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){
+    if(ao_format==AFMT_MPEG)
+	send_pes_packet(data,len,0x1C0,ao_pts);
+    else {
+	int i;
+	unsigned short *s=data;
+	for(i=0;i<len/2;i++) s[i]=(s[i]>>8)|(s[i]<<8); // le<->be
+	send_lpcm_packet(data,len,0xA0,ao_pts);
+    }
+    return len;
+}
+
+// return: how many unplayed bytes are in the buffer
+static int get_delay(){
+
+    return 0;
+}
+

libao2/audio_out.c

@@ -12,6 +12,7 @@ int ao_format=0;
 int ao_bps=0;
 int ao_outburst=OUTBURST; // config.h default
 int ao_buffersize=-1;
+int ao_pts=0;
 char *ao_subdevice = NULL;
 
 #ifdef USE_OSS_AUDIO
@@ -41,6 +42,7 @@ extern ao_functions_t audio_out_sgi;
 extern ao_functions_t audio_out_dxr3;
 #endif
 extern ao_functions_t audio_out_pcm;
+extern ao_functions_t audio_out_mpegpes;
 extern ao_functions_t audio_out_pss;
 
 ao_functions_t* audio_out_drivers[] =
@@ -71,6 +73,7 @@ ao_functions_t* audio_out_drivers[] =
 	&audio_out_dxr3,
 #endif
 	&audio_out_pcm,
+	&audio_out_mpegpes,
 //	&audio_out_pss,
 	NULL
 };

libao2/audio_out.h

@@ -36,6 +36,7 @@ extern int ao_format;
 extern int ao_bps;
 extern int ao_outburst;
 extern int ao_buffersize;
+extern int ao_pts;
 extern char *ao_subdevice;
 
 #define CONTROL_OK 1