Add SDL_sound streaming support and CFFI bindings

Expose SDL_sound streaming to the engine and update related plumbing.

- Add SDLSound streaming API (SDLSoundStreamInfo / SDLSoundStream) and functions: GetStreamInfo, OpenStream, ReadStream, RewindStream, SeekStream, CloseStream.
- Implement robust SDL_sound handling in SDLSound.cpp: sample creation, buffer alignment, prepare/resize logic, better error reporting, and streaming decode paths.
- Add SDLSoundBindings.cpp: CFFI/Haxe/HL bindings to work with SDL_sound streams (get info, open stream from bytes/file, read, seek, rewind, clear).
- Register new native CFFI functions in NativeCFFI.hx (regular and HL variants) and add CFFI callables.
- Extend AudioBuffer with fields for SDL sound sources and new helpers: fromBytesStream / fromFileStream and internal SDLSound metadata handling.
- Enhance NativeAudioSource to support SDL_sound streaming: open/reset/clear stream, buffer alignment, queue management, reading stream data and seeking; integrate with existing Vorbis streaming logic.
- Add TryResize API to Bytes and ArrayBufferView and update usages to avoid unnecessary allocations and handle OOM safely.
- Add SDLSoundBindings.cpp to project Build.xml and check Sound_Init() result during SDL init.

These changes enable streamed playback of compressed audio via SDL_sound (bytes or file), improve memory handling during decoding, and expose the required native bindings to Haxe/HL runtimes.

Author: dimensionscape

project/Build.xml

@@ -300,6 +300,7 @@
 			<compilerflag value="-DHAVE_STDIO_H" unless="windows" />
 			<compilerflag value="-I${NATIVE_TOOLKIT_PATH}/sdl_sound/src/" />
 
+			<file name="src/media/SDLSoundBindings.cpp" />
 			<file name="src/media/SDLSound.cpp" />
 
 		</section>

project/include/media/SDLSound.h

@@ -2,19 +2,48 @@
 #define LIME_MEDIA_DECODERS_SDL_SOUND_H
 
 
+#include "SDL_sound.h"
 #include <media/AudioBuffer.h>
 #include <utils/Resource.h>
 
 
 namespace lime {
 
 
+	struct SDLSoundStreamInfo {
+
+		int bitsPerSample;
+		bool canSeek;
+		int channels;
+		int duration;
+		int sampleRate;
+
+		SDLSoundStreamInfo () : bitsPerSample (0), canSeek (false), channels (0), duration (0), sampleRate (0) {}
+
+	};
+
+
+	struct SDLSoundStream {
+
+		Sound_Sample* sample;
+
+		SDLSoundStream () : sample (NULL) {}
+
+	};
+
+
 	class SDLSound {
 
 
 		public:
 
 			static bool Decode (Resource *resource, AudioBuffer *audioBuffer);
+			static bool GetStreamInfo (Resource *resource, SDLSoundStreamInfo *streamInfo);
+			static SDLSoundStream* OpenStream (Resource *resource);
+			static int ReadStream (SDLSoundStream *stream, unsigned char *buffer, int length);
+			static bool RewindStream (SDLSoundStream *stream);
+			static bool SeekStream (SDLSoundStream *stream, int ms);
+			static void CloseStream (SDLSoundStream *stream);
 
 
 	};
@@ -23,4 +52,4 @@ namespace lime {
 }
 
 
-#endif
+#endif

project/include/utils/ArrayBufferView.h

@@ -22,6 +22,7 @@ namespace lime {
 		ArrayBufferView (value arrayBufferView);
 		~ArrayBufferView ();
 
+		bool TryResize (int size);
 		void Resize (int size);
 		void Set (value bytes);
 		void Set (const QuickVec<unsigned char> data);
@@ -34,4 +35,4 @@ namespace lime {
 }
 
 
-#endif
+#endif

project/include/utils/Bytes.h

@@ -20,6 +20,7 @@ namespace lime {
 		~Bytes ();
 
 		void ReadFile (const char* path);
+		bool TryResize (int size);
 		void Resize (int size);
 		void Set (value bytes);
 		void Set (const QuickVec<unsigned char> data);
@@ -32,4 +33,4 @@ namespace lime {
 }
 
 
-#endif
+#endif

project/src/backend/sdl/SDLApplication.cpp

@@ -43,7 +43,11 @@ namespace lime {
 		}
 
 		#ifdef LIME_SDL_SOUND
-		Sound_Init();
+		if (!Sound_Init ()) {
+
+			printf ("Could not initialize SDL_sound: %s.\n", Sound_GetError ());
+
+		}
 		#endif
 
 		SDL_LogSetPriority (SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_WARN);