Changeset 84d6c39 in mainline for uspace/drv/audio/sb16/dsp.c

Timestamp:

2011-11-30T23:13:35Z (14 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

57cf3b3

Parents:

ac07a13

Message:

sb16: Drop support for 8bit format for now.

Looks like 8bit playback needs working dma8 channel (need to verify).

File:

• uspace/drv/audio/sb16/dsp.c (modified) (3 diffs)

uspace/drv/audio/sb16/dsp.c

@@ -148 +148 @@
 static inline size_t sample_count(uint8_t mode, size_t byte_count)
 {
-        if (mode & DSP_MODE_16BIT) {
+        // FIXME we only support 16 bit playback for now.
+        return byte_count / 2;
+
+        if (mode & DSP_MODE_SIGNED) {
                 return byte_count / 2;
         }
@@ -256 +259 @@
 
         /* Check supported parameters */
-        if (sample_size != 8 && sample_size != 16)
+        if (sample_size != 16) // FIXME We only support 16 bit playback
                 return ENOTSUP;
         if (channels != 1 && channels != 2)
@@ -275 +278 @@
         dsp->playing.mode = 0;
 
-        if (sample_size == 16)
-                dsp->playing.mode |= DSP_MODE_16BIT;
+                dsp->playing.mode |= DSP_MODE_SIGNED;
         if (channels == 2)
                 dsp->playing.mode |= DSP_MODE_STEREO;