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Code Issues Releases Wiki Activity

ao_coreaudio: fill asbd with an helper function

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This commit is contained in:
Stefano Pigozzi 2014-07-02 08:02:00 +02:00
parent fa85bfde69
commit 80ec0ba6d0
4 changed files with 29 additions and 39 deletions
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21
audio/out/ao_coreaudio.c
View File

@ -127,26 +127,7 @@ static int init(struct ao *ao)
// Build ASBD for the input format
AudioStreamBasicDescription asbd;
asbd.mSampleRate = ao->samplerate;
asbd.mFormatID = kAudioFormatLinearPCM;
asbd.mChannelsPerFrame = ao->channels.num;
asbd.mBitsPerChannel = af_fmt2bits(ao->format);
asbd.mFormatFlags = kAudioFormatFlagIsPacked;
if ((ao->format & AF_FORMAT_POINT_MASK) == AF_FORMAT_F)
asbd.mFormatFlags |= kAudioFormatFlagIsFloat;
if ((ao->format & AF_FORMAT_SIGN_MASK) == AF_FORMAT_SI)
asbd.mFormatFlags |= kAudioFormatFlagIsSignedInteger;
if ((ao->format & AF_FORMAT_END_MASK) == AF_FORMAT_BE)
asbd.mFormatFlags |= kAudioFormatFlagIsBigEndian;
asbd.mFramesPerPacket = 1;
asbd.mBytesPerPacket = asbd.mBytesPerFrame =
asbd.mFramesPerPacket * asbd.mChannelsPerFrame *
(asbd.mBitsPerChannel / 8);
ca_fill_asbd(ao, &asbd);
return init_lpcm(ao, asbd);
coreaudio_error:

20
audio/out/ao_coreaudio_device.c
View File

@ -432,25 +432,7 @@ static int init(struct ao *ao)
// Build ASBD for the input format
AudioStreamBasicDescription asbd;
asbd.mSampleRate = ao->samplerate;
asbd.mFormatID = kAudioFormat60958AC3;
asbd.mChannelsPerFrame = ao->channels.num;
asbd.mBitsPerChannel = af_fmt2bits(ao->format);
asbd.mFormatFlags = kAudioFormatFlagIsPacked;
if ((ao->format & AF_FORMAT_POINT_MASK) == AF_FORMAT_F)
asbd.mFormatFlags |= kAudioFormatFlagIsFloat;
if ((ao->format & AF_FORMAT_SIGN_MASK) == AF_FORMAT_SI)
asbd.mFormatFlags |= kAudioFormatFlagIsSignedInteger;
if ((ao->format & AF_FORMAT_END_MASK) == AF_FORMAT_BE)
asbd.mFormatFlags |= kAudioFormatFlagIsBigEndian;
asbd.mFramesPerPacket = 1;
asbd.mBytesPerPacket = asbd.mBytesPerFrame =
asbd.mFramesPerPacket * asbd.mChannelsPerFrame *
(asbd.mBitsPerChannel / 8);
ca_fill_asbd(ao, &asbd);
return init_digital(ao, asbd);

26
audio/out/ao_coreaudio_utils.c
View File

@ -25,6 +25,7 @@
#include "audio/out/ao_coreaudio_utils.h"
#include "audio/out/ao_coreaudio_properties.h"
#include "osdep/timer.h"
#include "audio/format.h"
void ca_print_device_list(struct ao *ao)
{
@ -125,6 +126,31 @@ bool check_ca_st(struct ao *ao, int level, OSStatus code, const char *message)
return false;
}
void ca_fill_asbd(struct ao *ao, AudioStreamBasicDescription *asbd)
{
asbd->mSampleRate = ao->samplerate;
asbd->mFormatID = AF_FORMAT_IS_AC3(ao->format) ?
kAudioFormat60958AC3 :
kAudioFormatLinearPCM;
asbd->mChannelsPerFrame = ao->channels.num;
asbd->mBitsPerChannel = af_fmt2bits(ao->format);
asbd->mFormatFlags = kAudioFormatFlagIsPacked;
if ((ao->format & AF_FORMAT_POINT_MASK) == AF_FORMAT_F)
asbd->mFormatFlags |= kAudioFormatFlagIsFloat;
if ((ao->format & AF_FORMAT_SIGN_MASK) == AF_FORMAT_SI)
asbd->mFormatFlags |= kAudioFormatFlagIsSignedInteger;
if ((ao->format & AF_FORMAT_END_MASK) == AF_FORMAT_BE)
asbd->mFormatFlags |= kAudioFormatFlagIsBigEndian;
asbd->mFramesPerPacket = 1;
asbd->mBytesPerPacket = asbd->mBytesPerFrame =
asbd->mFramesPerPacket * asbd->mChannelsPerFrame *
(asbd->mBitsPerChannel / 8);
}
void ca_print_asbd(struct ao *ao, const char *description,
const AudioStreamBasicDescription *asbd)
{

1
audio/out/ao_coreaudio_utils.h
View File

@ -49,6 +49,7 @@ bool check_ca_st(struct ao *ao, int level, OSStatus code, const char *message);
void ca_print_device_list(struct ao *ao);
OSStatus ca_select_device(struct ao *ao, int selection, AudioDeviceID *device);
void ca_fill_asbd(struct ao *ao, AudioStreamBasicDescription *asbd);
void ca_print_asbd(struct ao *ao, const char *description,
const AudioStreamBasicDescription *asbd);