opus & vorbis fix when using resampling

components/display/core/gds.h

@@ -5,11 +5,11 @@
 #include <stdbool.h>
 
 /* NOTE for drivers:
- The build-in DrawPixel(Fast), DrawCBR and ClearWindow are optimized for 1 bit 
- and 4 bits screen depth. For any other type of screen, DrawCBR and ClearWindow
- default to use DrawPixel, which is very sub-optimal. For such other depth, you 
- must supply the DrawPixelFast. The built-in 1 bit depth function are only for 
- screen with vertical framing (1 byte = 8 lines). For example SSD1326 in 
+ The build-in DrawPixel(Fast), DrawCBR and ClearWindow have optimized for 1 bit 
+ and 4 bits grayscale screen depth and 8, 16, 24 color. For any other type of screen, 
+ DrawCBR and ClearWindow default to use DrawPixel, which is very sub-optimal. For 
+ other depth, you  must supply the DrawPixelFast. The built-in 1 bit depth function 
+ are only for screen with vertical framing (1 byte = 8 lines). For example SSD1326 in 
  monochrome mode is not such type of screen, SH1106 and SSD1306 are
 */ 
 

components/squeezelite/opus.c

@@ -30,7 +30,9 @@
 *  thread has a higher priority. Using an interim buffer where opus decoder writes the output is not great from
 *  an efficiency (one extra memory copy) point of view, but it allows the lock to not be kept for too long
 */
+#if EMBEDDED
 #define FRAME_BUF 2048
+#endif
 
 #if BYTES_PER_FRAME == 4		
 #define ALIGN(n) 	(n)
@@ -151,16 +153,14 @@ static decode_state opus_decompress(void) {
 		LOG_INFO("setting track_start");
 	}
 
-#if !FRAME_BUF
-	LOCK_O_direct;
-#endif
-
 #if FRAME_BUF
 	IF_DIRECT(
 		frames = min(_buf_space(outputbuf), _buf_cont_write(outputbuf)) / BYTES_PER_FRAME;
+		frames = min(frames, FRAME_BUF);
 		write_buf = u->write_buf;
 	);
 #else
+	LOCK_O_direct;
 	IF_DIRECT(
 		frames = min(_buf_space(outputbuf), _buf_cont_write(outputbuf)) / BYTES_PER_FRAME;
 		write_buf = outputbuf->writep;
@@ -171,10 +171,6 @@ static decode_state opus_decompress(void) {
 		write_buf = process.inbuf;
 	);
 
-#if FRAME_BUF
-	frames = min(frames, FRAME_BUF);
-#endif
-	
 	// write the decoded frames into outputbuf then unpack them (they are 16 bits)
 	n = OP(u, read, u->of, (opus_int16*) write_buf, frames * channels, NULL);
 			
@@ -190,15 +186,21 @@ static decode_state opus_decompress(void) {
 		frames = n;
 		count = frames * channels;
 
-		iptr = (s16_t *)write_buf + count;
-		optr = (ISAMPLE_T *) outputbuf->writep + frames * 2;
-
+		// work backward to unpack samples (if needed)
+		iptr = (s16_t *) write_buf + count;
+		optr = (ISAMPLE_T *) write_buf + frames * 2;
+		
 		if (channels == 2) {
 #if BYTES_PER_FRAME == 4
-			memcpy(outputbuf->writep, write_buf, frames * BYTES_PER_FRAME);
+#if FRAME_BUF
+			// copy needed only when DIRECT and FRAME_BUF
+			IF_DIRECT(
+				memcpy(outputbuf->writep, write_buf, frames * BYTES_PER_FRAME);
+			)	
+#endif			
 #else
 			while (count--) {
-				*--optr = *--iptr << 16;
+				*--optr = ALIGN(*--iptr);
 			}
 #endif
 		} else if (channels == 1) {
@@ -298,8 +300,8 @@ struct codec *register_opus(void) {
 	static struct codec ret = {
 		'u',          // id
 		"ops",        // types
-		4096,         // min read
-		20480,        // min space
+		4*1024,       // min read
+		32*1024,       // min space
 		opus_open, 	  // open
 		opus_close,   // close
 		opus_decompress,  // decode
@@ -311,7 +313,9 @@ struct codec *register_opus(void) {
 	}
 
 	u->of = NULL;
+#if FRAME_BUF	
 	u->write_buf = NULL;
+#endif	
 
 	if (!load_opus()) {
 		return NULL;

components/squeezelite/squeezelite.h

@@ -387,9 +387,6 @@ typedef BOOL bool;
 
 #endif
 
-typedef u32_t frames_t;
-typedef int sockfd;
-
 // logging
 typedef enum { lERROR = 0, lWARN, lINFO, lDEBUG, lSDEBUG } log_level;
 
@@ -401,7 +398,10 @@ void logprint(const char *fmt, ...);
 #define LOG_INFO(fmt, ...)  if (loglevel >= lINFO)  logprint("%s %s:%d " fmt "\n", logtime(), __FUNCTION__, __LINE__, ##__VA_ARGS__)
 #define LOG_DEBUG(fmt, ...) if (loglevel >= lDEBUG) logprint("%s %s:%d " fmt "\n", logtime(), __FUNCTION__, __LINE__, ##__VA_ARGS__)
 #define LOG_SDEBUG(fmt, ...) if (loglevel >= lSDEBUG) logprint("%s %s:%d " fmt "\n", logtime(), __FUNCTION__, __LINE__, ##__VA_ARGS__)
-
+	
+typedef uint32_t frames_t;
+typedef int sockfd;
+	
 #if EMBEDDED
 #include "embedded.h"
 #endif

components/squeezelite/vorbis.c

@@ -29,7 +29,9 @@
 *  thread has a higher priority. Using an interim buffer where vorbis decoder writes the output is not great from
 *  an efficiency (one extra memory copy) point of view, but it allows the lock to not be kept for too long
 */
+#if EMBEDDED
 #define FRAME_BUF 2048
+#endif
 
 #if BYTES_PER_FRAME == 4		
 #define ALIGN(n) 	(n)
@@ -183,16 +185,14 @@ static decode_state vorbis_decode(void) {
 		}
 	}
 	
-#if !FRAME_BUF		
-	LOCK_O_direct;
-#endif	
-
 #if FRAME_BUF
 	IF_DIRECT(
 		frames = min(_buf_space(outputbuf), _buf_cont_write(outputbuf)) / BYTES_PER_FRAME;
+		frames = min(frames, FRAME_BUF);
 		write_buf = v->write_buf;
 	);
 #else
+	LOCK_O_direct;
 	IF_DIRECT(
 		frames = min(_buf_space(outputbuf), _buf_cont_write(outputbuf)) / BYTES_PER_FRAME;
 		write_buf = outputbuf->writep;
@@ -203,9 +203,6 @@ static decode_state vorbis_decode(void) {
 		write_buf = process.inbuf;
 	);
 	
-#if FRAME_BUF	
-	frames = min(frames, FRAME_BUF);
-#endif	
 	bytes = frames * 2 * channels; // samples returned are 16 bits
 
 	// write the decoded frames into outputbuf even though they are 16 bits per sample, then unpack them
@@ -237,15 +234,21 @@ static decode_state vorbis_decode(void) {
 		frames = n / 2 / channels;
 		count = frames * channels;
 
-		iptr = (s16_t *)write_buf + count;
-		optr = (ISAMPLE_T *) outputbuf->writep + frames * 2;
+		// work backward to unpack samples (if needed)
+		iptr = (s16_t *) write_buf + count;
+		optr = (ISAMPLE_T *) write_buf + frames * 2;
 
 		if (channels == 2) {
 #if BYTES_PER_FRAME == 4
-			memcpy(outputbuf->writep, write_buf, frames * BYTES_PER_FRAME);
+#if FRAME_BUF
+			// copy needed only when DIRECT and FRAME_BUF
+			IF_DIRECT(
+				memcpy(outputbuf->writep, write_buf, frames * BYTES_PER_FRAME);
+			)
+#endif			
 #else
 			while (count--) {
-				*--optr = *--iptr << 16;
+				*--optr = ALIGN(*--iptr);
 			}
 #endif
 		} else if (channels == 1) {