Changeset e7bf5f6 in mainline

Timestamp:

2012-08-20T15:10:21Z (12 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

daed689

Parents:

0387b92

Message:

wavplay: Use PCM_PLAYBACK_STARTED event and only fill up half of the buffer.

File:

• uspace/app/wavplay/dplay.c (modified) (3 diffs)

uspace/app/wavplay/dplay.c

@@ -91 +91 @@
                 ipc_callid_t callid = async_get_call(&call);
                 switch(IPC_GET_IMETHOD(call)) {
+                case PCM_EVENT_PLAYBACK_STARTED:
                 case PCM_EVENT_FRAMES_PLAYED:
                         printf("%u frames\n", IPC_GET_ARG1(call));
@@ -128 +129 @@
         assert(pb);
         assert(pb->device);
-        pb->buffer.position = pb->buffer.base;
+        const size_t buffer_part = pb->buffer.size / BUFFER_PARTS;
+        pb->buffer.position = pb->buffer.base + buffer_part;
         printf("Registering event callback\n");
         int ret = audio_pcm_register_event_callback(pb->device,
@@ -139 +141 @@
             sampling_rate, pcm_sample_format_str(format), channels);
         const size_t bytes = fread(pb->buffer.base, sizeof(uint8_t),
-            pb->buffer.size, pb->source);
-        if (bytes != pb->buffer.size)
-                bzero(pb->buffer.base + bytes, pb->buffer.size - bytes);
+            buffer_part, pb->source);
+        if (bytes != buffer_part)
+                bzero(pb->buffer.base + bytes, buffer_part - bytes);
         printf("Buffer data ready.\n");
         fibril_mutex_lock(&pb->mutex);