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audio/dsound: fix invalid parameters error

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Windows (unlike wine) bails out when IDirectSoundBuffer8::Lock is called
with zero length.  Also, hw->pos_emul handling was incorrect when
calling this function for the first time.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Reported-by: KJ Liew <liewkj@yahoo.com>
Tested-by: Howard Spoelstra <hsp.cat7@gmail.com>
Message-id: fe9744216d9d421a2dbb09bcf5fa0dbd18f77ac5.1580684275.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Kővágó, Zoltán 2020-02-03 00:02:23 +01:00 committed by Gerd Hoffmann
parent 599eac4e5a
commit fb35c2cec5
3 changed files with 26 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
audio/audio.c
View File

@ -1076,10 +1076,8 @@ static size_t audio_pcm_hw_run_out(HWVoiceOut *hw, size_t live)
while (live) {
size_t size, decr, proc;
void *buf = hw->pcm_ops->get_buffer_out(hw, &size);
if (!buf) {
/* retrying will likely won't help, drop everything. */
hw->mix_buf->pos = (hw->mix_buf->pos + live) % hw->mix_buf->size;
return clipped + live;
if (!buf || size == 0) {
break;
}
decr = MIN(size / hw->info.bytes_per_frame, live);

1
audio/dsound_template.h
View File

@ -244,6 +244,7 @@ static int dsound_init_out(HWVoiceOut *hw, struct audsettings *as,
goto fail0;
}
ds->first_time = true;
obt_as.endianness = 0;
audio_pcm_init_info (&hw->info, &obt_as);

27
audio/dsoundaudio.c
View File

@ -53,12 +53,14 @@ typedef struct {
typedef struct {
HWVoiceOut hw;
LPDIRECTSOUNDBUFFER dsound_buffer;
bool first_time;
dsound *s;
} DSoundVoiceOut;
typedef struct {
HWVoiceIn hw;
LPDIRECTSOUNDCAPTUREBUFFER dsound_capture_buffer;
bool first_time;
dsound *s;
} DSoundVoiceIn;
@ -414,21 +416,32 @@ static void *dsound_get_buffer_out(HWVoiceOut *hw, size_t *size)
DSoundVoiceOut *ds = (DSoundVoiceOut *) hw;
LPDIRECTSOUNDBUFFER dsb = ds->dsound_buffer;
HRESULT hr;
DWORD ppos, act_size;
DWORD ppos, wpos, act_size;
size_t req_size;
int err;
void *ret;
hr = IDirectSoundBuffer_GetCurrentPosition(dsb, &ppos, NULL);
hr = IDirectSoundBuffer_GetCurrentPosition(
dsb, &ppos, ds->first_time ? &wpos : NULL);
if (FAILED(hr)) {
dsound_logerr(hr, "Could not get playback buffer position\n");
*size = 0;
return NULL;
}
if (ds->first_time) {
hw->pos_emul = wpos;
ds->first_time = false;
}
req_size = audio_ring_dist(ppos, hw->pos_emul, hw->size_emul);
req_size = MIN(req_size, hw->size_emul - hw->pos_emul);
if (req_size == 0) {
*size = 0;
return NULL;
}
err = dsound_lock_out(dsb, &hw->info, hw->pos_emul, req_size, &ret, NULL,
&act_size, NULL, false, ds->s);
if (err) {
@ -508,18 +521,24 @@ static void *dsound_get_buffer_in(HWVoiceIn *hw, size_t *size)
DSoundVoiceIn *ds = (DSoundVoiceIn *) hw;
LPDIRECTSOUNDCAPTUREBUFFER dscb = ds->dsound_capture_buffer;
HRESULT hr;
DWORD cpos, act_size;
DWORD cpos, rpos, act_size;
size_t req_size;
int err;
void *ret;
hr = IDirectSoundCaptureBuffer_GetCurrentPosition(dscb, &cpos, NULL);
hr = IDirectSoundCaptureBuffer_GetCurrentPosition(
dscb, &cpos, ds->first_time ? &rpos : NULL);
if (FAILED(hr)) {
dsound_logerr(hr, "Could not get capture buffer position\n");
*size = 0;
return NULL;
}
if (ds->first_time) {
hw->pos_emul = rpos;
ds->first_time = false;
}
req_size = audio_ring_dist(cpos, hw->pos_emul, hw->size_emul);
req_size = MIN(req_size, hw->size_emul - hw->pos_emul);