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53091e36a3
Remove the hard upper limit of 8192 samples and instead use the buffer sizes provided by Pipewire to determine the size of the intermediate input buffer and whether double buffering is required for output streams. This allows for higher latency streams to potentially avoid double-buffering in the output case, and we can guarantee that the intermediate input buffer will always be large enough to handle whatever Pipewire may deliver. As the buffer size calculations occur in a callback in the Pipewire processing thread itself, the stream readiness check has been modified to wait on two distinct flags set when the buffers have been configured and when the stream is ready and running.
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#ifndef SDL_pipewire_h_
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#define SDL_pipewire_h_
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#include "../SDL_sysaudio.h"
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#include <pipewire/pipewire.h>
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/* Hidden "this" pointer for the audio functions */
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#define _THIS SDL_AudioDevice *this
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struct SDL_PrivateAudioData
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{
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struct pw_thread_loop *loop;
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struct pw_stream *stream;
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struct pw_context *context;
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struct SDL_DataQueue *buffer;
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size_t input_buffer_packet_size;
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Sint32 stride; /* Bytes-per-frame */
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int stream_init_status;
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};
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#endif /* SDL_pipewire_h_ */
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/* vi: set ts=4 sw=4 expandtab: */
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