[PATCH 6/7] winepulse: Allocate ACImpl volumes when channel count is known.

[Andrew Eikum]

On Fri, May 21, 2021 at 02:36:38PM +0200, Jacek Caban wrote:
> diff --git a/dlls/winepulse.drv/mmdevdrv.c b/dlls/winepulse.drv/mmdevdrv.c
> index df38bb594c73..2d30cf866481 100644
> --- a/dlls/winepulse.drv/mmdevdrv.c
> +++ b/dlls/winepulse.drv/mmdevdrv.c
> @@ -585,15 +581,30 @@ static HRESULT WINAPI AudioClient_Initialize(IAudioClient3 *iface,
>      hr = pulse->create_stream(name, This->dataflow, mode, flags, duration, period, fmt,
>                                &This->channel_count, &This->pulse_stream);
>      free(name);
> -    if (SUCCEEDED(hr)) {
> -        hr = get_audio_session(sessionguid, This->parent, This->channel_count, &This->session);
> -        if (SUCCEEDED(hr)) {
> -            set_stream_volumes(This);
> -            list_add_tail(&This->session->clients, &This->entry);
> -        } else {
> -            pulse->release_stream(This->pulse_stream, NULL);
> -            This->pulse_stream = NULL;
> -        }
> +    if (FAILED(hr)) goto out;
> +
> +    if (!(This->vol = malloc(This->channel_count * sizeof(*This->vol))))
> +    {
> +        hr = E_OUTOFMEMORY;
> +        goto out;
> +    }
> +    for (i = 0; i < This->channel_count; i++)
> +        This->vol[i] = 1.f;
> +
> +    hr = get_audio_session(sessionguid, This->parent, This->channel_count, &This->session);
> +    if (FAILED(hr)) goto out;
> +
> +    set_stream_volumes(This);
> +    list_add_tail(&This->session->clients, &This->entry);
> +
> +out:
> +    if (FAILED(hr))
> +    {
> +        pulse->release_stream(This->pulse_stream, NULL);

This one causes hangs because we already are holding the lock here,
but release_stream() also takes the lock. You can see the hang in the
winecfg Test Sound button, or the winmm wave test.

Andrew