forked from len0rd/rockbox
first attempt at mp3 playback in x11 simulator using libmad
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@535 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Dave Chapman
parent
564bb3edb0
commit
4dbbca63d3
4 changed files with 272 additions and 1 deletions
|
|
@ -29,6 +29,10 @@
|
|||
|
||||
#include "id3.h"
|
||||
|
||||
#ifdef MPEG_PLAY
|
||||
#include "x11/mpegplay.h"
|
||||
#endif
|
||||
|
||||
#define LINE_Y 8 /* initial line */
|
||||
#define LINE_HEIGTH 8 /* line height in pixels */
|
||||
|
||||
|
|
@ -68,6 +72,12 @@ void playtune(char *dir, char *file)
|
|||
lcd_update();
|
||||
#endif
|
||||
|
||||
#ifdef MPEG_PLAY
|
||||
sprintf(buffer, "%s/%s", dir, file);
|
||||
mpeg_play(buffer);
|
||||
return;
|
||||
#endif
|
||||
|
||||
while(1) {
|
||||
int key = button_get();
|
||||
|
||||
|
|
|
|||
|
|
@ -57,6 +57,12 @@ APPS = tetris.c screensaver.c tree.c app.c play.c menu.c icons.c
|
|||
SRCS = screenhack.c uibasic.c resources.c visual.c lcd-x11.c \
|
||||
button-x11.c io.c sleep.c $(APPS) $(FIRMSRCS)
|
||||
|
||||
ifdef MPEG_PLAY
|
||||
SRCS += mpegplay.c
|
||||
DEFINES += -DMPEG_PLAY
|
||||
LIBS = -lmad
|
||||
endif
|
||||
|
||||
OBJS := $(SRCS:c=o)
|
||||
|
||||
all: $(TARGET)
|
||||
|
|
@ -108,7 +114,7 @@ sprintf.o: $(COMMON)/sprintf.c
|
|||
$(CC) $(CFLAGS) -c $<
|
||||
|
||||
$(TARGET): $(OBJS)
|
||||
$(CC) -g -o $(TARGET) $(LIBDIRS) $(LDFLAGS) $(OBJS)
|
||||
$(CC) -g -o $(TARGET) $(LIBDIRS) $(LDFLAGS) $(OBJS) $(LIBS)
|
||||
|
||||
DEPS:=.deps
|
||||
|
||||
|
|
|
|||
232
uisimulator/x11/mpegplay.c
Normal file
232
uisimulator/x11/mpegplay.c
Normal file
|
|
@ -0,0 +1,232 @@
|
|||
/***************************************************************************
|
||||
* __________ __ ___.
|
||||
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||||
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||||
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||||
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||||
* \/ \/ \/ \/ \/
|
||||
*
|
||||
* Copyright (C) 2002 Dave Chapman
|
||||
*
|
||||
* All files in this archive are subject to the GNU General Public License.
|
||||
* See the file COPYING in the source tree root for full license agreement.
|
||||
*
|
||||
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||||
* KIND, either express or implied.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef MPEG_PLAY
|
||||
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include <file.h>
|
||||
#include <types.h>
|
||||
#include <lcd.h>
|
||||
#include <button.h>
|
||||
#include "id3.h"
|
||||
|
||||
#include <stdio.h>
|
||||
#include <mad.h>
|
||||
#include <linux/soundcard.h>
|
||||
|
||||
/* We want to use the "real" open in some cases */
|
||||
#undef open
|
||||
|
||||
struct mad_stream Stream;
|
||||
struct mad_frame Frame;
|
||||
struct mad_synth Synth;
|
||||
mad_timer_t Timer;
|
||||
int sound;
|
||||
|
||||
void init_oss(int sound, int sound_freq, int channels) {
|
||||
int format=AFMT_U16_LE;
|
||||
int setting=0x000C000D; // 12 fragments size 8kb ? WHAT IS THIS?
|
||||
|
||||
if (ioctl(sound,SNDCTL_DSP_SETFRAGMENT,&setting)==-1) {
|
||||
perror("SNDCTL_DSP_SETFRAGMENT");
|
||||
}
|
||||
|
||||
if (ioctl(sound,SNDCTL_DSP_STEREO,&channels)==-1) {
|
||||
perror("SNDCTL_DSP_STEREO");
|
||||
}
|
||||
if (channels==0) { fprintf(stderr,"Warning, only mono supported\n"); }
|
||||
|
||||
if (ioctl(sound,SNDCTL_DSP_SETFMT,&format)==-1) {
|
||||
perror("SNDCTL_DSP_SETFMT");
|
||||
}
|
||||
|
||||
fprintf(stderr,"SETTING /dev/dsp to %dHz\n",sound_freq);
|
||||
if (ioctl(sound,SNDCTL_DSP_SPEED,&sound_freq)==-1) {
|
||||
perror("SNDCTL_DSP_SPEED");
|
||||
}
|
||||
}
|
||||
|
||||
unsigned short MadFixedToUshort(mad_fixed_t Fixed)
|
||||
{
|
||||
Fixed=Fixed>>(MAD_F_FRACBITS-15);
|
||||
return((unsigned short)Fixed);
|
||||
}
|
||||
|
||||
#define INPUT_BUFFER_SIZE (5*8192)
|
||||
#define OUTPUT_BUFFER_SIZE 8192 /* Must be an integer multiple of 4. */
|
||||
int 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;
|
||||
int sound,fd;
|
||||
mp3entry mp3;
|
||||
|
||||
mp3info(&mp3, fname);
|
||||
|
||||
#undef open
|
||||
sound=open("/dev/dsp", O_WRONLY);
|
||||
|
||||
if (sound < 0) {
|
||||
fprintf(stderr,"Can not open /dev/dsp - Aborting - sound=%d\n",sound);
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
init_oss(sound,mp3.frequency,2);
|
||||
|
||||
fd=x11_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(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;
|
||||
}
|
||||
}
|
||||
|
||||
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=MadFixedToUshort(Synth.pcm.samples[0][i]);
|
||||
*(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=MadFixedToUshort(Synth.pcm.samples[1][i]);
|
||||
*(OutputPtr++)=Sample&0xff;
|
||||
*(OutputPtr++)=Sample>>8;
|
||||
|
||||
/* Flush the buffer if it is full. */
|
||||
if(OutputPtr==OutputBufferEnd)
|
||||
{
|
||||
if(write(sound,OutputBuffer,OUTPUT_BUFFER_SIZE)!=OUTPUT_BUFFER_SIZE)
|
||||
{
|
||||
fprintf(stderr,"PCM write error.\n");
|
||||
Status=2;
|
||||
break;
|
||||
}
|
||||
OutputPtr=OutputBuffer;
|
||||
}
|
||||
}
|
||||
}while(1);
|
||||
|
||||
fprintf(stderr,"END OF MAD LOOP\n");
|
||||
/* 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;
|
||||
}
|
||||
}
|
||||
|
||||
/* 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);
|
||||
/* That's the end of the world (in the H. G. Wells way). */
|
||||
return(Status);
|
||||
}
|
||||
|
||||
|
||||
#endif
|
||||
23
uisimulator/x11/mpegplay.h
Normal file
23
uisimulator/x11/mpegplay.h
Normal file
|
|
@ -0,0 +1,23 @@
|
|||
/***************************************************************************
|
||||
* __________ __ ___.
|
||||
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||||
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||||
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||||
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||||
* \/ \/ \/ \/ \/
|
||||
*
|
||||
* Copyright (C) 2002 Dave Chapman
|
||||
*
|
||||
* All files in this archive are subject to the GNU General Public License.
|
||||
* See the file COPYING in the source tree root for full license agreement.
|
||||
*
|
||||
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||||
* KIND, either express or implied.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef MPEG_PLAY
|
||||
|
||||
int mpeg_play(char* fname);
|
||||
|
||||
#endif
|
||||
Loading…
Add table
Add a link
Reference in a new issue