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authorWarren Dukes <warren.dukes@gmail.com>2004-05-07 15:58:04 +0000
committerWarren Dukes <warren.dukes@gmail.com>2004-05-07 15:58:04 +0000
commit3794126e5609112d68a2e0c9cbae5a923da301b6 (patch)
treee44ad37c6b27f6f4a52b63c6c1057a860f93ff80 /src/mp3_decode.c
parent9196023f14acf37ee47ac7798029270476d7d3cb (diff)
downloadmpd-3794126e5609112d68a2e0c9cbae5a923da301b6.tar.gz
mpd-3794126e5609112d68a2e0c9cbae5a923da301b6.tar.xz
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new OutputBuffer abstraction stuff, implemented for mp3, now need to
implement in other decoders git-svn-id: https://svn.musicpd.org/mpd/trunk@940 09075e82-0dd4-0310-85a5-a0d7c8717e4f
Diffstat (limited to '')
-rw-r--r--src/mp3_decode.c65
1 files changed, 31 insertions, 34 deletions
diff --git a/src/mp3_decode.c b/src/mp3_decode.c
index 9103742e4..973f96541 100644
--- a/src/mp3_decode.c
+++ b/src/mp3_decode.c
@@ -37,6 +37,7 @@
#include "log.h"
#include "utils.h"
#include "inputStream.h"
+#include "outputBuffer.h"
#include <stdio.h>
#include <string.h>
@@ -111,13 +112,15 @@ signed long audio_linear_dither(unsigned int bits, mad_fixed_t sample, struct au
/* decoder stuff is based on madlld */
+#define MP3_DATA_OUTPUT_BUFFER_SIZE 4096
+
typedef struct _mp3DecodeData {
struct mad_stream stream;
struct mad_frame frame;
struct mad_synth synth;
mad_timer_t timer;
unsigned char readBuffer[READ_BUFFER_SIZE];
- char outputBuffer[CHUNK_SIZE];
+ char outputBuffer[MP3_DATA_OUTPUT_BUFFER_SIZE];
char * outputPtr;
char * outputBufferEnd;
float totalTime;
@@ -141,7 +144,7 @@ int initMp3DecodeData(mp3DecodeData * data, char * file) {
if(ret<0) return -1;
data->outputPtr = data->outputBuffer;
- data->outputBufferEnd = data->outputBuffer+CHUNK_SIZE;
+ data->outputBufferEnd = data->outputBuffer+MP3_DATA_OUTPUT_BUFFER_SIZE;
data->muteFrame = 0;
data->highestFrame = 0;
data->maxFrames = 0;
@@ -406,29 +409,7 @@ int openMp3(char * file, mp3DecodeData * data) {
return 0;
}
-int mp3ChildSendData(mp3DecodeData * data, Buffer * cb, DecoderControl * dc) {
- while(cb->begin==cb->end && cb->wrap && !dc->stop && !dc->seek)
- my_usleep(10000);
- if(dc->stop) return -1;
- /* just for now, so it doesn't hang */
- if(dc->seek) return 0;
- /* be sure to remove this! */
-
- memcpy(cb->chunks+cb->end*CHUNK_SIZE,data->outputBuffer,CHUNK_SIZE);
- cb->chunkSize[cb->end] = data->outputPtr-data->outputBuffer;
- cb->bitRate[cb->end] = data->bitRate/1000;
- cb->times[cb->end] = data->elapsedTime;
-
- cb->end++;
- if(cb->end>=buffered_chunks) {
- cb->end = 0;
- cb->wrap = 1;
- }
-
- return 0;
-}
-
-int mp3Read(mp3DecodeData * data, Buffer * cb, DecoderControl * dc) {
+int mp3Read(mp3DecodeData * data, OutputBuffer * cb, DecoderControl * dc) {
static int i;
static int ret;
static struct audio_dither dither;
@@ -464,6 +445,8 @@ int mp3Read(mp3DecodeData * data, Buffer * cb, DecoderControl * dc) {
}
}
else {
+ long ret;
+
mad_synth_frame(&data->synth,&data->frame);
for(i=0;i<(data->synth).pcm.length;i++) {
@@ -484,12 +467,24 @@ int mp3Read(mp3DecodeData * data, Buffer * cb, DecoderControl * dc) {
}
if(data->outputPtr==data->outputBufferEnd) {
- if(mp3ChildSendData(data,cb,dc)<0) {
- data->flush = 0;
- return DECODE_BREAK;
- }
- data->outputPtr = data->outputBuffer;
- if(dc->seek) break;
+ ret = sendDataToOutputBuffer(cb,dc,
+ 0,data->outputBuffer,
+ MP3_DATA_OUTPUT_BUFFER_SIZE,
+ data->elapsedTime,
+ data->bitRate/1000);
+ if(ret == OUTPUT_BUFFER_DC_STOP) {
+ return DECODE_BREAK;
+ }
+ if(ret >= 0) {
+ memmove(data->outputBuffer,
+ data->outputBuffer+ret,
+ MP3_DATA_OUTPUT_BUFFER_SIZE-
+ ret);
+ data->outputPtr-=ret;
+ }
+ else data->outputPtr = data->outputBuffer;
+
+ if(ret == OUTPUT_BUFFER_DC_SEEK) break;
}
}
@@ -534,7 +529,7 @@ void initAudioFormatFromMp3DecodeData(mp3DecodeData * data, AudioFormat * af) {
af->channels = MAD_NCHANNELS(&(data->frame).header);
}
-int mp3_decode(Buffer * cb, AudioFormat * af, DecoderControl * dc) {
+int mp3_decode(OutputBuffer * cb, AudioFormat * af, DecoderControl * dc) {
mp3DecodeData data;
if(openMp3(dc->file,&data) < 0) {
@@ -550,7 +545,9 @@ int mp3_decode(Buffer * cb, AudioFormat * af, DecoderControl * dc) {
while(mp3Read(&data,cb,dc)!=DECODE_BREAK);
/* send last little bit if not dc->stop */
if(data.outputPtr!=data.outputBuffer && data.flush) {
- mp3ChildSendData(&data,cb,dc);
+ sendDataToOutputBuffer(cb,dc,1,data.outputBuffer,
+ data.outputPtr-data.outputBuffer,
+ data.elapsedTime,data.bitRate/1000);
}
mp3DecodeDataFinalize(&data);
@@ -567,4 +564,4 @@ int mp3_decode(Buffer * cb, AudioFormat * af, DecoderControl * dc) {
}
#endif
-/* vim:set shiftwidth=4 tabstop=8 expandtab: */
+/* vim:set shiftwidth=8 tabstop=8 expandtab: */