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-rw-r--r--uisimulator/common/mpegplay.c269
-rw-r--r--uisimulator/common/mpegplay.h2
2 files changed, 131 insertions, 140 deletions
diff --git a/uisimulator/common/mpegplay.c b/uisimulator/common/mpegplay.c
index 09799ad176..f48fc699f6 100644
--- a/uisimulator/common/mpegplay.c
+++ b/uisimulator/common/mpegplay.c
@@ -119,160 +119,151 @@ signed int dither(mad_fixed_t sample, struct dither *dither)
#define INPUT_BUFFER_SIZE (5*8192)
#define OUTPUT_BUFFER_SIZE 8192 /* Must be an integer multiple of 4. */
-int mpeg_play(char* fname)
+void mpeg_play(char* fname)
{
- unsigned char InputBuffer[INPUT_BUFFER_SIZE],
- OutputBuffer[OUTPUT_BUFFER_SIZE],
- *OutputPtr=OutputBuffer;
- const unsigned char *OutputBufferEnd=OutputBuffer+OUTPUT_BUFFER_SIZE;
- int Status=0,
- i;
- unsigned long FrameCount=0;
- sound_t sound;
- int fd;
- mp3entry mp3;
- register signed int s0, s1;
- static struct dither d0, d1;
+ unsigned char InputBuffer[INPUT_BUFFER_SIZE],
+ OutputBuffer[OUTPUT_BUFFER_SIZE],
+ *OutputPtr=OutputBuffer;
+ const unsigned char *OutputBufferEnd=OutputBuffer+OUTPUT_BUFFER_SIZE;
+ int Status=0, i, fd;
+ unsigned long FrameCount=0;
+ sound_t sound;
+ mp3entry mp3;
+ register signed int s0, s1;
+ static struct dither d0, d1;
- mp3info(&mp3, fname);
+ mp3info(&mp3, fname);
- init_sound(&sound);
+ init_sound(&sound);
- /* Configure sound device for this file - always select Stereo because
- some sound cards don't support mono */
- config_sound(&sound,mp3.frequency,2);
+ /* Configure sound device for this file - always select Stereo because
+ some sound cards don't support mono */
+ config_sound(&sound,mp3.frequency,2);
- fd=open(fname,O_RDONLY);
- if (fd < 0) {
- fprintf(stderr,"could not open %s\n",fname);
- return 0;
- }
-
- /* First the structures used by libmad must be initialized. */
- mad_stream_init(&Stream);
- mad_frame_init(&Frame);
- mad_synth_init(&Synth);
- mad_timer_reset(&Timer);
-
- do
- {
- if (button_get()) break; /* Return if a key is pressed */
-
- if(Stream.buffer==NULL || Stream.error==MAD_ERROR_BUFLEN)
- {
- size_t ReadSize,Remaining;
- unsigned char *ReadStart;
-
- if(Stream.next_frame!=NULL)
- {
- Remaining=Stream.bufend-Stream.next_frame;
- memmove(InputBuffer,Stream.next_frame,Remaining);
- ReadStart=InputBuffer+Remaining;
- ReadSize=INPUT_BUFFER_SIZE-Remaining;
- }
- else
- ReadSize=INPUT_BUFFER_SIZE,
- ReadStart=InputBuffer,
- Remaining=0;
-
- ReadSize=read(fd,ReadStart,ReadSize);
- if(ReadSize<=0)
- {
- fprintf(stderr,"end of input stream\n");
- break;
- }
-
- mad_stream_buffer(&Stream,InputBuffer,ReadSize+Remaining);
- Stream.error=0;
+ if ((fd=open(fname,O_RDONLY)) < 0) {
+ fprintf(stderr,"could not open %s\n",fname);
+ return;
}
- if(mad_frame_decode(&Frame,&Stream)) {
- if(MAD_RECOVERABLE(Stream.error))
- {
- fprintf(stderr,"recoverable frame level error\n");
- fflush(stderr);
- continue;
- }
- else
- if(Stream.error==MAD_ERROR_BUFLEN) {
- continue;
- } else {
- fprintf(stderr,"unrecoverable frame level error\n");
- Status=1;
- break;
+ /* First the structures used by libmad must be initialized. */
+ mad_stream_init(&Stream);
+ mad_frame_init(&Frame);
+ mad_synth_init(&Synth);
+ mad_timer_reset(&Timer);
+
+ do {
+ if (button_get())
+ break;
+
+ if (Stream.buffer==NULL || Stream.error==MAD_ERROR_BUFLEN) {
+ size_t ReadSize,Remaining;
+ unsigned char *ReadStart;
+
+ if(Stream.next_frame!=NULL) {
+ Remaining=Stream.bufend-Stream.next_frame;
+ memmove(InputBuffer,Stream.next_frame,Remaining);
+ ReadStart=InputBuffer+Remaining;
+ ReadSize=INPUT_BUFFER_SIZE-Remaining;
+ } else {
+ ReadSize=INPUT_BUFFER_SIZE,
+ ReadStart=InputBuffer,
+ Remaining=0;
+ }
+
+ if ((ReadSize=read(fd,ReadStart,ReadSize)) < 0) {
+ fprintf(stderr,"end of input stream\n");
+ break;
+ }
+
+ mad_stream_buffer(&Stream,InputBuffer,ReadSize+Remaining);
+ Stream.error=0;
}
- }
- FrameCount++;
- mad_timer_add(&Timer,Frame.header.duration);
-
- mad_synth_frame(&Synth,&Frame);
-
- for(i=0;i<Synth.pcm.length;i++)
- {
- unsigned short Sample;
-
- /* Left channel */
- Sample=scale(Synth.pcm.samples[0][i],&d0);
- *(OutputPtr++)=Sample&0xff;
- *(OutputPtr++)=Sample>>8;
-
- /* Right channel. If the decoded stream is monophonic then
- * the right output channel is the same as the left one.
- */
- if(MAD_NCHANNELS(&Frame.header)==2)
- Sample=scale(Synth.pcm.samples[1][i],&d1);
- *(OutputPtr++)=Sample&0xff;
- *(OutputPtr++)=Sample>>8;
-
- /* Flush the buffer if it is full. */
- if(OutputPtr==OutputBufferEnd)
- {
- if(output_sound(&sound,OutputBuffer,OUTPUT_BUFFER_SIZE)!=OUTPUT_BUFFER_SIZE)
- {
- fprintf(stderr,"PCM write error.\n");
- Status=2;
- break;
+ if(mad_frame_decode(&Frame,&Stream)) {
+ if(MAD_RECOVERABLE(Stream.error)) {
+ fprintf(stderr,"recoverable frame level error\n");
+ fflush(stderr);
+ continue;
+ } else {
+ if(Stream.error==MAD_ERROR_BUFLEN) {
+ continue;
+ } else {
+ fprintf(stderr,"unrecoverable frame level error\n");
+ Status=1;
+ break;
+ }
+ }
}
- OutputPtr=OutputBuffer;
- }
- }
- }while(1);
- /* Mad is no longer used, the structures that were initialized must
+ FrameCount++;
+ mad_timer_add(&Timer,Frame.header.duration);
+
+ mad_synth_frame(&Synth,&Frame);
+
+ for(i=0;i<Synth.pcm.length;i++) {
+ unsigned short Sample;
+
+ /* Left channel */
+ Sample=scale(Synth.pcm.samples[0][i],&d0);
+ *(OutputPtr++)=Sample&0xff;
+ *(OutputPtr++)=Sample>>8;
+
+ /* Right channel. If the decoded stream is monophonic then
+ * the right output channel is the same as the left one.
+ */
+ if(MAD_NCHANNELS(&Frame.header)==2) {
+ Sample=scale(Synth.pcm.samples[1][i],&d1);
+ }
+
+ *(OutputPtr++)=Sample&0xff;
+ *(OutputPtr++)=Sample>>8;
+
+ /* Flush the buffer if it is full. */
+ if (OutputPtr==OutputBufferEnd) {
+ if (output_sound(&sound, OutputBuffer,
+ OUTPUT_BUFFER_SIZE)!=OUTPUT_BUFFER_SIZE) {
+ fprintf(stderr,"PCM write error.\n");
+ Status=2;
+ break;
+ }
+ OutputPtr=OutputBuffer;
+ }
+ }
+ }while(1);
+
+ /* Mad is no longer used, the structures that were initialized must
* now be cleared.
- */
- mad_synth_finish(&Synth);
- mad_frame_finish(&Frame);
- mad_stream_finish(&Stream);
-
- /* If the output buffer is not empty and no error occured during
- * the last write, then flush it.
- */
- if(OutputPtr!=OutputBuffer && Status!=2)
- {
- size_t BufferSize=OutputPtr-OutputBuffer;
-
- if(write(sound,OutputBuffer,1,BufferSize)!=BufferSize)
- {
- fprintf(stderr,"PCM write error\n");
- Status=2;
- }
- }
+ */
+ mad_synth_finish(&Synth);
+ mad_frame_finish(&Frame);
+ mad_stream_finish(&Stream);
+
+ /* If the output buffer is not empty and no error occured during
+ * the last write, then flush it. */
+ if(OutputPtr!=OutputBuffer && Status!=2)
+ {
+ size_t BufferSize=OutputPtr-OutputBuffer;
- /* Accounting report if no error occured. */
- if(!Status)
- {
- char Buffer[80];
+ if(write(sound,OutputBuffer,1,BufferSize)!=BufferSize)
+ {
+ fprintf(stderr,"PCM write error\n");
+ Status=2;
+ }
+ }
- mad_timer_string(Timer,Buffer,"%lu:%02lu.%03u",
- MAD_UNITS_MINUTES,MAD_UNITS_MILLISECONDS,0);
- fprintf(stderr,"%lu frames decoded (%s).\n",FrameCount,Buffer);
- }
+ /* Accounting report if no error occured. */
+ if(!Status)
+ {
+ char Buffer[80];
+
+ mad_timer_string(Timer,Buffer,"%lu:%02lu.%03u",
+ MAD_UNITS_MINUTES,MAD_UNITS_MILLISECONDS,0);
+ fprintf(stderr,"%lu frames decoded (%s).\n",FrameCount,Buffer);
+ }
- close_sound(&sound);
- /* That's the end of the world (in the H. G. Wells way). */
- return(Status);
+ close_sound(&sound);
+ /* That's the end of the world (in the H. G. Wells way). */
+ return;
}
diff --git a/uisimulator/common/mpegplay.h b/uisimulator/common/mpegplay.h
index cde9fe183f..d0c100c45b 100644
--- a/uisimulator/common/mpegplay.h
+++ b/uisimulator/common/mpegplay.h
@@ -18,6 +18,6 @@
#ifdef MPEG_PLAY
-int mpeg_play(char* fname);
+void mpeg_play(char* fname);
#endif
generated by cgit (git 2.34.1) at 2023-11-28 22:57:31 +0000