Player: Setting up the audio output

2 files changed, 103 insertions, 3 deletions

diff --git a/src/audio/player.c b/src/audio/player.c
index b68d5ba5..aea2a998 100644
--- a/src/audio/player.c
+++ b/src/audio/player.c
@@ -25,14 +25,100 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
 #include <the_Foundation/thread.h>
 #include <SDL_audio.h>
 
+iDeclareType(Decoder)
+
+enum iDecoderType {
+    wav_DecoderType,
+    mpeg_DecoderType,
+    vorbis_DecoderType,
+    midi_DecoderType,
+};
+
+struct Impl_Decoder {
+    enum iDecoderType type;
+    size_t inPos;
+//    iBlock samples;
+};
+
 struct Impl_Player {
+    SDL_AudioSpec spec;
     SDL_AudioDeviceID device;
+    iMutex mtx;
+    iBlock data;
+    iBool isDataComplete;
 };
 
 void init_Player(iPlayer *d) {
+    iZap(d->spec);
     d->device = 0;
+    init_Mutex(&d->mtx);
+    init_Block(&d->data, 0);
+    d->isDataComplete = iFalse;
 }
 
 void deinit_Player(iPlayer *d) {
-    SDL_CloseAudioDevice(d->device);
+    stop_Player(d);
+    deinit_Block(&d->data);
+}
+
+iBool isStarted_Player(const iPlayer *d) {
+    return d->device != 0;
+}
+
+void setFormatHint_Player(iPlayer *d, const char *hint) {
+
+}
+
+void updateSourceData_Player(iPlayer *d, const iBlock *data, enum iPlayerUpdate update) {
+    lock_Mutex(&d->mtx);
+    switch (update) {
+        case replace_PlayerUpdate:
+            set_Block(&d->data, data);
+            d->isDataComplete = iFalse;
+            break;
+        case append_PlayerUpdate:
+            append_Block(&d->data, data);
+            d->isDataComplete = iFalse;
+            break;
+        case complete_PlayerUpdate:
+            d->isDataComplete = iTrue;
+            break;
+    }
+    unlock_Mutex(&d->mtx);
+}
+
+static void writeOutputSamples_Player_(void *plr, Uint8 *stream, int len) {
+    iPlayer *d = plr;
+    memset(stream, 0, len);
+    /* TODO: Copy samples from the decoder's ring buffer. */
+}
+
+iBool start_Player(iPlayer *d) {
+    if (isStarted_Player(d)) {
+        return iFalse;
+    }
+    SDL_AudioSpec conf;
+    iZap(conf);
+    conf.freq     = 44100; /* TODO: from content */
+    conf.format   = AUDIO_S16;
+    conf.channels = 2; /* TODO: from content */
+    conf.samples  = 2048;
+    conf.callback = writeOutputSamples_Player_;
+    conf.userdata = d;
+    d->device     = SDL_OpenAudioDevice(NULL, SDL_FALSE /* playback */, &conf, &d->spec, 0);
+    if (!d->device) {
+        return iFalse;
+    }
+    /* TODO: Start the stream/decoder thread. */
+    /* TODO: Audio device is unpaused when there are samples ready to play. */
+    return iTrue;
+}
+
+void stop_Player(iPlayer *d) {
+    if (isStarted_Player(d)) {
+        /* TODO: Stop the stream/decoder. */
+        SDL_PauseAudioDevice(d->device, SDL_TRUE);
+        SDL_CloseAudioDevice(d->device);
+        d->device = 0;
+    }
 }
diff --git a/src/audio/player.h b/src/audio/player.h
index 2786f619..121659f2 100644
--- a/src/audio/player.h
+++ b/src/audio/player.h
@@ -22,7 +22,21 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
 
 #pragma once
 
-#include <the_Foundation/defs.h>
+#include <the_Foundation/block.h>
 
 iDeclareType(Player)
-iDeclareTypeConstruction(Player)
+iDeclareTypeConstruction(Player)    
+
+enum iPlayerUpdate {
+    replace_PlayerUpdate,
+    append_PlayerUpdate,
+    complete_PlayerUpdate,
+};
+
+void    setFormatHint_Player    (iPlayer *, const char *hint);
+void    updateSourceData_Player (iPlayer *, const iBlock *data, enum iPlayerUpdate update);
+
+iBool   start_Player    (iPlayer *);
+void    stop_Player     (iPlayer *);
+
+iBool   isStarted_Player    (const iPlayer *);