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Diffstat (limited to 'backends/platform/ds/arm9/source/cdaudio.cpp')
-rw-r--r--backends/platform/ds/arm9/source/cdaudio.cpp166
1 files changed, 83 insertions, 83 deletions
diff --git a/backends/platform/ds/arm9/source/cdaudio.cpp b/backends/platform/ds/arm9/source/cdaudio.cpp
index 9569a820f2..2897a9364b 100644
--- a/backends/platform/ds/arm9/source/cdaudio.cpp
+++ b/backends/platform/ds/arm9/source/cdaudio.cpp
@@ -19,7 +19,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
-
+
#include "cdaudio.h"
#include "ds-fs.h"
#include "config-manager.h"
@@ -53,9 +53,9 @@ struct WaveHeader {
u16 fmtExtraData; // Number of extra fmt bytes
u16 fmtExtra; // Samples per block (only for IMA-ADPCM files)
} __attribute__ ((packed));
-
+
struct chunkHeader {
- char name[4];
+ char name[4];
u32 size;
} __attribute__ ((packed));
@@ -112,7 +112,7 @@ void decompressBlock();
void allocBuffers() {
-
+
}
void setActive(bool active) {
@@ -125,17 +125,17 @@ bool getActive() {
void playTrack(int track, int numLoops, int startFrame, int duration) {
Common::String path = ConfMan.get("path");
-
+
if (isPlayingFlag) {
stopTrack();
}
-
+
if (trackStartsAt2) {
track++;
}
-
-
-
+
+
+
char str[100];
if (path[strlen(path.c_str()) - 1] == '/') {
@@ -145,50 +145,50 @@ void playTrack(int track, int numLoops, int startFrame, int duration) {
sprintf(str, "/track%d.wav", track);
path = path + str;
}
-
-
+
+
//1820160
-
+
file = DS::std_fopen(path.c_str(), "rb");
-
+
if (!file) {
consolePrintf("Failed to open %s!\n", path.c_str());
return;
}
-
-
+
+
DS::std_fread((const void *) &waveHeader, sizeof(waveHeader), 1, file);
-
+
consolePrintf("Playing track %d\n", track);
consolePrintf("Format: %d\n", waveHeader.fmtFormatTag);
consolePrintf("Rate : %d\n", waveHeader.fmtSamPerSec);
consolePrintf("Bits : %d\n", waveHeader.fmtBitsPerSam);
consolePrintf("BlkSz : %d\n", waveHeader.fmtExtra);
-
+
if ((waveHeader.fmtFormatTag != 17) && (waveHeader.fmtFormatTag != 20)) {
consolePrintf("Wave file is in the wrong format! You must use IMA-ADPCM 4-bit mono.\n");
DS::std_fclose(file);
return;
}
-
+
for (int r = 0; r < 8; r++) {
IPC->adpcm.buffer[r] = (u8 * volatile) (decoderFormat *) malloc(waveHeader.fmtBlockAlign);
IPC->adpcm.filled[r] = false;
IPC->adpcm.arm7Dirty[r] = false;
}
-
+
// Skip chunks until we reach the data chunk
chunkHeader chunk;
DS::std_fread((const void *) &chunk, sizeof(chunkHeader), 1, file);
-
+
while (!((chunk.name[0] == 'd') && (chunk.name[1] == 'a') && (chunk.name[2] == 't') && (chunk.name[3] == 'a'))) {
DS::std_fseek(file, chunk.size, SEEK_CUR);
DS::std_fread((const void *) &chunk, sizeof(chunkHeader), 1, file);
}
-
+
dataChunkStart = DS::std_ftell(file);
-
-
+
+
static bool started = false;
sampleNum = 0;
blockCount = 0;
@@ -206,35 +206,35 @@ void playTrack(int track, int numLoops, int startFrame, int duration) {
memset(audioBuffer, 0, BUFFER_SIZE * 2);
memset(decompressionBuffer, 0, waveHeader.fmtExtra * 2);
DS::playSound(audioBuffer, BUFFER_SIZE * 2, false, false, waveHeader.fmtSamPerSec);
-
- }
+
+ }
fillPos = (IPC->streamPlayingSection + 1) & 3;
isPlayingFlag = true;
-
-
+
+
// Startframe is a 75Hz timer. Dunno why, since nothing else
// seems to run at that rate.
int tenths = (startFrame * 10) / 75;
-
+
// Seek to the nearest block start to the start time
int samples = (tenths * waveHeader.fmtSamPerSec) / 10;
int block = samples / waveHeader.fmtExtra;
-
-
+
+
if (duration == 0) {
blocksLeft = 0;
} else {
blocksLeft = ((((duration * 100) / 75) * (waveHeader.fmtSamPerSec)) / (waveHeader.fmtExtra) / 100) + 10;
}
// consolePrintf("Playing %d blocks (%d)\n\n", blocksLeft, duration);
-
+
// No need to seek if we're starting from the beginning
if (block != 0) {
DS::std_fseek(file, dataChunkStart + block * waveHeader.fmtBlockAlign, SEEK_SET);
// consolePrintf("Startframe: %d msec: %d (%d,%d)\n", startFrame, tenthssec, samples, block);
}
-
-
+
+
//decompressBlock();
playNextBlock();
DS::CD::numLoops = numLoops;
@@ -252,21 +252,21 @@ extern "C" void ARM_adcpm(int *block, int len, int stepTableIndex,
void decompressBlock() {
int block[2048];
bool loop = false;
-
+
blockCount++;
-
+
if (blockCount < 10) return;
-
-
+
+
do {
DS::std_fread((const void *) &blockHeader, sizeof(blockHeader), 1, file);
-
+
DS::std_fread(&block[0], waveHeader.fmtBlockAlign - sizeof(blockHeader), 1, file);
if (DS::std_feof(file) ) {
// Reached end of file, so loop
-
-
+
+
if ((numLoops == -1) || (numLoops > 1)) {
// Seek file to first packet
if (numLoops != -1) {
@@ -283,14 +283,14 @@ void decompressBlock() {
stopTrack();
return;
}
-
+
} else {
loop = false;
}
-
+
} while (loop);
-
-
+
+
if (blocksLeft > 0) {
blocksLeft--;
// consolePrintf("%d ", blocksLeft);
@@ -305,37 +305,37 @@ void decompressBlock() {
blockHeader.stepTableIndex,
blockHeader.firstSample,
decompressionBuffer);
-#else
+#else
// First sample is in header
decompressionBuffer[0] = blockHeader.firstSample;
-
+
// Set up initial table indeces
int stepTableIndex = blockHeader.stepTableIndex;
int prevSample = blockHeader.firstSample;
-
+
// consolePrintf("Decompressing block step=%d fs=%d\n", stepTableIndex, prevSample);
for (int r = 0; r < waveHeader.fmtExtra - 1; r++) {
-
+
int word = block[r >> 3];
int offset = 0;
-
+
switch (7 - (r & 0x0007)) {
case 0: {
offset = (word & 0xF0000000) >> 28;
break;
}
-
+
case 1: {
offset = (word & 0x0F000000) >> 24;
break;
}
-
+
case 2: {
offset = (word & 0x00F00000) >> 20;
break;
}
-
+
case 3: {
offset = (word & 0x000F0000) >> 16;
break;
@@ -361,41 +361,41 @@ void decompressBlock() {
break;
}
}
-
+
int diff = 0;
-
+
if (offset & 4) {
diff = diff + stepTab[stepTableIndex];
}
-
+
if (offset & 2) {
diff = diff + (stepTab[stepTableIndex] >> 1);
}
-
+
if (offset & 1) {
diff = diff + (stepTab[stepTableIndex] >> 2);
}
-
+
diff = diff + (stepTab[stepTableIndex] >> 3);
-
+
if (offset & 8) {
- diff = -diff;
+ diff = -diff;
}
-
+
int newSample = prevSample + diff;
-
+
if (newSample > 32767) newSample = 32767;
if (newSample < -32768) newSample = -32768;
-
+
decompressionBuffer[r + 1] = newSample;
-
+
prevSample = newSample;
-
+
stepTableIndex += indexTab[offset];
-
+
if (stepTableIndex > 88) stepTableIndex = 88;
if (stepTableIndex < 0) stepTableIndex = 0;
-
+
}
#endif
@@ -404,21 +404,21 @@ void decompressBlock() {
void playNextBlock() {
if (!isPlayingFlag) return;
int lastBlockId = -1;
-
+
while (IPC->adpcm.semaphore); // Wait for buffer to become free if needed
IPC->adpcm.semaphore = true; // Lock the buffer structure to prevent clashing with the ARM7
// DC_FlushAll();
-
+
//-8644, 25088
for (int block = fillPos + 1; block < fillPos + 4; block++) {
int blockId = block & 3;
-
+
if (IPC->streamFillNeeded[blockId]) {
-
+
IPC->streamFillNeeded[blockId] = false;
// DC_FlushAll();
-
+
/* if (!(REG_KEYINPUT & KEY_R)) {
//consolePrintf("Align: %d First: %d Step:%d Res:%d\n", waveHeader.fmtBlockAlign, blockHeader.firstSample, blockHeader.stepTableIndex, blockHeader.reserved);
consolePrintf("Filling buffer %d\n", blockId);
@@ -432,19 +432,19 @@ void playNextBlock() {
}
}
}
-
+
lastBlockId = blockId;
IPC->streamFillNeeded[blockId] = false;
// DC_FlushAll();
}
-
-
-
+
+
+
}
-
-
-
+
+
+
if (lastBlockId != -1) {
fillPos = lastBlockId;
/* if (!(REG_KEYINPUT & KEY_R)) {
@@ -459,18 +459,18 @@ void stopTrack() {
if (!isPlayingFlag) return;
DS::std_fclose(file);
-
+
isPlayingFlag = false;
-
+
for (int r = 0; r < BUFFER_SIZE; r++) {
audioBuffer[r] = 0;
}
-
+
for (int r= 0; r < waveHeader.fmtExtra; r++) {
decompressionBuffer[r] = 0;
}
// DS::stopSound(1);
-
+
// free(audioBuffer);
// free(decompressionBuffer);
@@ -507,7 +507,7 @@ bool trackExists(int num) {
bool checkCD() {
// Need to check whethe CD audio files are present - do this by trying to open Track1.wav.
consolePrintf("Attempted to open cd drive\n");
-
+
if (trackExists(1)) {
trackStartsAt2 = false;
return true;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 23:06:43 +0000