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* Added TODO.

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* Automatic whitespace cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36957 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold 2010-05-27 20:42:53 +00:00
parent 4c214152e8
commit 8984ae973b
1 changed files with 11 additions and 10 deletions
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21
src/add-ons/kernel/drivers/audio/null/null_hardware.c
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@ -8,7 +8,7 @@
#include "driver.h" #include "driver.h"
status_t status_t
null_hw_create_virtual_buffers(device_stream_t* stream, const char* name) null_hw_create_virtual_buffers(device_stream_t* stream, const char* name)
{ {
int i; int i;
@ -18,15 +18,15 @@ null_hw_create_virtual_buffers(device_stream_t* stream, const char* name)
status_t result; status_t result;
physical_entry pe; physical_entry pe;
buffer_size = stream->num_channels buffer_size = stream->num_channels
* format_to_sample_size(stream->format) * format_to_sample_size(stream->format)
* stream->buffer_length; * stream->buffer_length;
buffer_size = (buffer_size + 127) & (~127); buffer_size = (buffer_size + 127) & (~127);
area_size = buffer_size * stream->num_buffers; area_size = buffer_size * stream->num_buffers;
area_size = (area_size + B_PAGE_SIZE - 1) & (~(B_PAGE_SIZE -1)); area_size = (area_size + B_PAGE_SIZE - 1) & (~(B_PAGE_SIZE -1));
stream->buffer_area = create_area("null_audio_buffers", (void**)&buffer, stream->buffer_area = create_area("null_audio_buffers", (void**)&buffer,
B_ANY_KERNEL_ADDRESS, area_size, B_ANY_KERNEL_ADDRESS, area_size,
B_CONTIGUOUS, B_READ_AREA | B_WRITE_AREA); B_CONTIGUOUS, B_READ_AREA | B_WRITE_AREA);
if (stream->buffer_area < B_OK) if (stream->buffer_area < B_OK)
@ -35,11 +35,12 @@ null_hw_create_virtual_buffers(device_stream_t* stream, const char* name)
// Get the correct address for setting up the buffers // Get the correct address for setting up the buffers
// pointers being passed back to userland // pointers being passed back to userland
result = get_memory_map(buffer, area_size, &pe, 1); result = get_memory_map(buffer, area_size, &pe, 1);
// TODO: pe is never used!
if (result != B_OK) { if (result != B_OK) {
delete_area(stream->buffer_area); delete_area(stream->buffer_area);
return result; return result;
} }
for (i=0; i < stream->num_buffers; i++) { for (i=0; i < stream->num_buffers; i++) {
stream->buffers[i] = buffer + (i*buffer_size); stream->buffers[i] = buffer + (i*buffer_size);
} }
@ -49,11 +50,11 @@ null_hw_create_virtual_buffers(device_stream_t* stream, const char* name)
} }
static int32 static int32
null_fake_interrupt(void* cookie) null_fake_interrupt(void* cookie)
{ {
// This thread is supposed to fake the interrupt // This thread is supposed to fake the interrupt
// handling done in communication with the // handling done in communication with the
// hardware usually. What it does is nearly the // hardware usually. What it does is nearly the
// same like all soundrivers, get the interrupt // same like all soundrivers, get the interrupt
// exchange the buffer pointer and update the // exchange the buffer pointer and update the
@ -104,7 +105,7 @@ null_fake_interrupt(void* cookie)
} }
status_t status_t
null_start_hardware(device_t* device) null_start_hardware(device_t* device)
{ {
dprintf("null_audio: %s spawning fake interrupter\n", __func__); dprintf("null_audio: %s spawning fake interrupter\n", __func__);
@ -115,7 +116,7 @@ null_start_hardware(device_t* device)
} }
void void
null_stop_hardware(device_t* device) null_stop_hardware(device_t* device)
{ {
device->running = false; device->running = false;