From 75d4503a0118b8136ed534e67af5c84fb860291a Mon Sep 17 00:00:00 2001
From: Sam Hocevar <sam@hocevar.net>
Date: Fri, 8 Mar 2013 14:56:12 +0000
Subject: [PATCH] ps3: implement very simple audio playback.
---
src/sample.cpp | 93 ++++++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 86 insertions(+), 7 deletions(-)
diff --git a/src/sample.cpp b/src/sample.cpp
index 727e586d..3cf74aa3 100644
--- a/src/sample.cpp
+++ b/src/sample.cpp
@@ -16,7 +16,9 @@
#include <cstdio>
#include <cstring>
-#if defined USE_SDL_MIXER
+#if __CELLOS_LV2__
+# include <cell/mstream.h> /* multistream */
+#elif defined USE_SDL_MIXER
# if defined HAVE_SDL_SDL_H
# include <SDL/SDL.h>
# else
@@ -46,7 +48,29 @@ class SampleData
private:
String m_name;
-#if defined USE_SDL_MIXER
+#if __CELLOS_LV2__
+ static void Callback(int stream, void *data, int type,
+ void *write_buf, int buf_size)
+ {
+ UNUSED(write_buf, buf_size);
+ switch (type)
+ {
+ case CELL_MS_CALLBACK_MOREDATA:
+ /* For streamed sound */
+ break;
+ case CELL_MS_CALLBACK_CLOSESTREAM:
+ case CELL_MS_CALLBACK_FINISHSTREAM:
+ /* Finished playing */
+ break;
+ default:
+ /* FIXME: we can't reach here */
+ break;
+ }
+ }
+
+ String m_data;
+ int m_channel;
+#elif defined USE_SDL_MIXER
Mix_Chunk *m_chunk;
int m_channel;
#endif
@@ -61,7 +85,24 @@ Sample::Sample(char const *path)
{
data->m_name = String("<sample> ") + path;
-#if defined USE_SDL_MIXER
+#if __CELLOS_LV2__
+ Array<String> pathlist = System::GetPathList(path);
+ File f;
+ for (int i = 0; i < pathlist.Count(); ++i)
+ {
+ f.Open(pathlist[i], FileAccess::Read);
+ if (f.IsValid())
+ {
+ data->m_data = f.ReadString();
+ f.Close();
+ break;
+ }
+ }
+ if (data->m_data.Count() == 0)
+ {
+ Log::Error("could not load sample %s\n", path);
+ }
+#elif defined USE_SDL_MIXER
Array<String> pathlist = System::GetPathList(path);
for (int i = 0; i < pathlist.Count(); ++i)
{
@@ -83,7 +124,9 @@ Sample::Sample(char const *path)
Sample::~Sample()
{
-#if defined USE_SDL_MIXER
+#if __CELLOS_LV2__
+ /* Nothing to do */
+#elif defined USE_SDL_MIXER
Mix_FreeChunk(data->m_chunk);
#endif
delete data;
@@ -101,21 +144,57 @@ char const *Sample::GetName()
void Sample::Play()
{
-#if defined USE_SDL_MIXER
+#if __CELLOS_LV2__
+ if (data->m_data.Count() <= 64 + 256)
+ return;
+
+ data->m_channel = cellMSStreamOpen();
+
+ CellMSInfo mi;
+ mi.SubBusGroup = CELL_MS_MASTER_BUS;
+ mi.FirstBuffer = &data->m_data[0] + 64;
+ /* FIXME: hardcoded crap */
+ mi.FirstBufferSize = data->m_data.Count() - 64 - 256;
+ mi.SecondBuffer = nullptr;
+ mi.SecondBufferSize = 0;
+
+ mi.Pitch = 44100;
+ mi.numChannels = 2;
+ mi.flags = CELL_MS_STREAM_AUTOCLOSE;
+
+ mi.initialOffset = 0;
+ mi.inputType = CELL_MS_16BIT_LITTLE;
+ cellMSStreamSetInfo(data->m_channel, &mi);
+
+ cellMSStreamSetCallbackFunc(data->m_channel, SampleData::Callback);
+
+ cellMSCoreSetVolume1(data->m_channel, CELL_MS_DRY,
+ CELL_MS_SPEAKER_FL, CELL_MS_CHANNEL_0, 1.0f);
+ cellMSCoreSetVolume1(data->m_channel, CELL_MS_DRY,
+ CELL_MS_SPEAKER_FR, CELL_MS_CHANNEL_0, 1.0f);
+ cellMSStreamPlay(data->m_channel);
+#elif defined USE_SDL_MIXER
data->m_channel = Mix_PlayChannel(-1, data->m_chunk, 0);
#endif
}
void Sample::Loop()
{
-#if defined USE_SDL_MIXER
+#if __CELLOS_LV2__
+ /* FIXME: not implemented */
+ Play();
+#elif defined USE_SDL_MIXER
data->m_channel = Mix_PlayChannel(-1, data->m_chunk, -1);
#endif
}
void Sample::Stop()
{
-#if defined USE_SDL_MIXER
+#if __CELLOS_LV2__
+ if (data->m_channel >= 0)
+ cellMSStreamClose(data->m_channel);
+ data->m_channel = -1;
+#elif defined USE_SDL_MIXER
if (data->m_channel >= 0)
Mix_HaltChannel(data->m_channel);
data->m_channel = -1;