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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
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@ -29,6 +29,10 @@
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#include "id3.h"
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#include "id3.h"
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#ifdef MPEG_PLAY
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#include "x11/mpegplay.h"
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#endif
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#define LINE_Y 8 /* initial line */
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#define LINE_Y 8 /* initial line */
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#define LINE_HEIGTH 8 /* line height in pixels */
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#define LINE_HEIGTH 8 /* line height in pixels */
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@ -68,6 +72,12 @@ void playtune(char *dir, char *file)
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lcd_update();
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lcd_update();
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#endif
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#endif
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#ifdef MPEG_PLAY
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sprintf(buffer, "%s/%s", dir, file);
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mpeg_play(buffer);
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return;
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#endif
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while(1) {
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while(1) {
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int key = button_get();
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int key = button_get();
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@ -57,6 +57,12 @@ APPS = tetris.c screensaver.c tree.c app.c play.c menu.c icons.c
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SRCS = screenhack.c uibasic.c resources.c visual.c lcd-x11.c \
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SRCS = screenhack.c uibasic.c resources.c visual.c lcd-x11.c \
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button-x11.c io.c sleep.c $(APPS) $(FIRMSRCS)
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button-x11.c io.c sleep.c $(APPS) $(FIRMSRCS)
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ifdef MPEG_PLAY
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SRCS += mpegplay.c
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DEFINES += -DMPEG_PLAY
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LIBS = -lmad
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endif
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OBJS := $(SRCS:c=o)
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OBJS := $(SRCS:c=o)
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all: $(TARGET)
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all: $(TARGET)
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@ -108,7 +114,7 @@ sprintf.o: $(COMMON)/sprintf.c
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$(CC) $(CFLAGS) -c $<
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$(CC) $(CFLAGS) -c $<
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$(TARGET): $(OBJS)
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$(TARGET): $(OBJS)
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$(CC) -g -o $(TARGET) $(LIBDIRS) $(LDFLAGS) $(OBJS)
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$(CC) -g -o $(TARGET) $(LIBDIRS) $(LDFLAGS) $(OBJS) $(LIBS)
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DEPS:=.deps
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DEPS:=.deps
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232
uisimulator/x11/mpegplay.c
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232
uisimulator/x11/mpegplay.c
Normal file
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@ -0,0 +1,232 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (C) 2002 Dave Chapman
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifdef MPEG_PLAY
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#include <string.h>
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#include <stdlib.h>
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#include <file.h>
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#include <types.h>
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#include <lcd.h>
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#include <button.h>
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#include "id3.h"
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#include <stdio.h>
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#include <mad.h>
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#include <linux/soundcard.h>
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/* We want to use the "real" open in some cases */
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#undef open
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struct mad_stream Stream;
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struct mad_frame Frame;
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struct mad_synth Synth;
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mad_timer_t Timer;
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int sound;
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void init_oss(int sound, int sound_freq, int channels) {
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int format=AFMT_U16_LE;
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int setting=0x000C000D; // 12 fragments size 8kb ? WHAT IS THIS?
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if (ioctl(sound,SNDCTL_DSP_SETFRAGMENT,&setting)==-1) {
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perror("SNDCTL_DSP_SETFRAGMENT");
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}
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if (ioctl(sound,SNDCTL_DSP_STEREO,&channels)==-1) {
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perror("SNDCTL_DSP_STEREO");
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}
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if (channels==0) { fprintf(stderr,"Warning, only mono supported\n"); }
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if (ioctl(sound,SNDCTL_DSP_SETFMT,&format)==-1) {
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perror("SNDCTL_DSP_SETFMT");
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}
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fprintf(stderr,"SETTING /dev/dsp to %dHz\n",sound_freq);
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if (ioctl(sound,SNDCTL_DSP_SPEED,&sound_freq)==-1) {
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perror("SNDCTL_DSP_SPEED");
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}
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}
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unsigned short MadFixedToUshort(mad_fixed_t Fixed)
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{
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Fixed=Fixed>>(MAD_F_FRACBITS-15);
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return((unsigned short)Fixed);
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}
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#define INPUT_BUFFER_SIZE (5*8192)
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#define OUTPUT_BUFFER_SIZE 8192 /* Must be an integer multiple of 4. */
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int mpeg_play(char* fname)
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{
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unsigned char InputBuffer[INPUT_BUFFER_SIZE],
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OutputBuffer[OUTPUT_BUFFER_SIZE],
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*OutputPtr=OutputBuffer;
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const unsigned char *OutputBufferEnd=OutputBuffer+OUTPUT_BUFFER_SIZE;
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int Status=0,
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i;
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unsigned long FrameCount=0;
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int sound,fd;
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mp3entry mp3;
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mp3info(&mp3, fname);
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#undef open
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sound=open("/dev/dsp", O_WRONLY);
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if (sound < 0) {
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fprintf(stderr,"Can not open /dev/dsp - Aborting - sound=%d\n",sound);
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exit(-1);
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}
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init_oss(sound,mp3.frequency,2);
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fd=x11_open(fname,O_RDONLY);
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if (fd < 0) {
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fprintf(stderr,"could not open %s\n",fname);
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return 0;
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}
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/* First the structures used by libmad must be initialized. */
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mad_stream_init(&Stream);
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mad_frame_init(&Frame);
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mad_synth_init(&Synth);
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mad_timer_reset(&Timer);
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do
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{
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if (button_get()) break; /* Return if a key is pressed */
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if(Stream.buffer==NULL || Stream.error==MAD_ERROR_BUFLEN)
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{
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size_t ReadSize,Remaining;
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unsigned char *ReadStart;
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if(Stream.next_frame!=NULL)
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{
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Remaining=Stream.bufend-Stream.next_frame;
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memmove(InputBuffer,Stream.next_frame,Remaining);
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ReadStart=InputBuffer+Remaining;
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ReadSize=INPUT_BUFFER_SIZE-Remaining;
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}
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else
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ReadSize=INPUT_BUFFER_SIZE,
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ReadStart=InputBuffer,
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Remaining=0;
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ReadSize=read(fd,ReadStart,ReadSize);
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if(ReadSize<=0)
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{
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fprintf(stderr,"end of input stream\n");
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break;
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}
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mad_stream_buffer(&Stream,InputBuffer,ReadSize+Remaining);
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Stream.error=0;
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}
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if(mad_frame_decode(&Frame,&Stream)) {
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if(MAD_RECOVERABLE(Stream.error))
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{
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fprintf(stderr,"recoverable frame level error\n");
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fflush(stderr);
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continue;
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}
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else
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if(Stream.error==MAD_ERROR_BUFLEN) {
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continue;
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} else {
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fprintf(stderr,"unrecoverable frame level error\n");
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Status=1;
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break;
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}
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}
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FrameCount++;
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mad_timer_add(&Timer,Frame.header.duration);
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mad_synth_frame(&Synth,&Frame);
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for(i=0;i<Synth.pcm.length;i++)
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{
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unsigned short Sample;
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/* Left channel */
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Sample=MadFixedToUshort(Synth.pcm.samples[0][i]);
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*(OutputPtr++)=Sample&0xff;
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*(OutputPtr++)=Sample>>8;
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/* Right channel. If the decoded stream is monophonic then
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* the right output channel is the same as the left one.
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*/
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if(MAD_NCHANNELS(&Frame.header)==2)
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Sample=MadFixedToUshort(Synth.pcm.samples[1][i]);
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*(OutputPtr++)=Sample&0xff;
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*(OutputPtr++)=Sample>>8;
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/* Flush the buffer if it is full. */
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if(OutputPtr==OutputBufferEnd)
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{
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if(write(sound,OutputBuffer,OUTPUT_BUFFER_SIZE)!=OUTPUT_BUFFER_SIZE)
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{
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fprintf(stderr,"PCM write error.\n");
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Status=2;
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break;
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}
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OutputPtr=OutputBuffer;
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}
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}
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}while(1);
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fprintf(stderr,"END OF MAD LOOP\n");
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/* Mad is no longer used, the structures that were initialized must
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* now be cleared.
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*/
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mad_synth_finish(&Synth);
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mad_frame_finish(&Frame);
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mad_stream_finish(&Stream);
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/* If the output buffer is not empty and no error occured during
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* the last write, then flush it.
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*/
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if(OutputPtr!=OutputBuffer && Status!=2)
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{
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size_t BufferSize=OutputPtr-OutputBuffer;
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if(write(sound,OutputBuffer,1,BufferSize)!=BufferSize)
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{
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fprintf(stderr,"PCM write error\n");
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Status=2;
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}
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}
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/* Accounting report if no error occured. */
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if(!Status)
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{
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char Buffer[80];
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mad_timer_string(Timer,Buffer,"%lu:%02lu.%03u",
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MAD_UNITS_MINUTES,MAD_UNITS_MILLISECONDS,0);
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fprintf(stderr,"%lu frames decoded (%s).\n",FrameCount,Buffer);
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}
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close(sound);
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/* That's the end of the world (in the H. G. Wells way). */
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return(Status);
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}
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#endif
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23
uisimulator/x11/mpegplay.h
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23
uisimulator/x11/mpegplay.h
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@ -0,0 +1,23 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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*
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* Copyright (C) 2002 Dave Chapman
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifdef MPEG_PLAY
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int mpeg_play(char* fname);
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#endif
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