API CHANGE: Update ma_decoder_read_pcm_frames().

This makes ma_decoder_read_pcm_frames() consistent with other data
sources. It now returns a result code and outputs the number of frames
read via an output parameter.

examples/simple_capture.c

@@ -37,7 +37,7 @@ int main(int argc, char** argv)
         return -1;
     }
 
-    encoderConfig = ma_encoder_config_init(ma_resource_format_wav, ma_format_f32, 2, 44100);
+    encoderConfig = ma_encoder_config_init(ma_encoding_format_wav, ma_format_f32, 2, 44100);
 
     if (ma_encoder_init_file(argv[1], &encoderConfig, &encoder) != MA_SUCCESS) {
         printf("Failed to initialize output file.\n");

examples/simple_loopback.c

@@ -44,7 +44,7 @@ int main(int argc, char** argv)
         return -1;
     }
 
-    encoderConfig = ma_encoder_config_init(ma_resource_format_wav, ma_format_f32, 2, 44100);
+    encoderConfig = ma_encoder_config_init(ma_encoding_format_wav, ma_format_f32, 2, 44100);
 
     if (ma_encoder_init_file(argv[1], &encoderConfig, &encoder) != MA_SUCCESS) {
         printf("Failed to initialize output file.\n");

examples/simple_mixing.c

@@ -61,7 +61,7 @@ ma_uint32 read_and_mix_pcm_frames_f32(ma_decoder* pDecoder, float* pOutputF32, m
             framesToReadThisIteration = totalFramesRemaining;
         }
 
-        framesReadThisIteration = (ma_uint32)ma_decoder_read_pcm_frames(pDecoder, temp, framesToReadThisIteration);
+        framesReadThisIteration = (ma_uint32)ma_decoder_read_pcm_frames(pDecoder, temp, framesToReadThisIteration, NULL);
         if (framesReadThisIteration == 0) {
             break;
         }

examples/simple_playback.c

@@ -22,7 +22,7 @@ void data_callback(ma_device* pDevice, void* pOutput, const void* pInput, ma_uin
         return;
     }
 
-    ma_decoder_read_pcm_frames(pDecoder, pOutput, frameCount);
+    ma_decoder_read_pcm_frames(pDecoder, pOutput, frameCount, NULL);
 
     (void)pInput;
 }