diff options
Diffstat (limited to 'drivers/gaudin/Win32/gaudin_lld.c')
| -rw-r--r-- | drivers/gaudin/Win32/gaudin_lld.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/drivers/gaudin/Win32/gaudin_lld.c b/drivers/gaudin/Win32/gaudin_lld.c deleted file mode 100644 index e798f4ef..00000000 --- a/drivers/gaudin/Win32/gaudin_lld.c +++ /dev/null @@ -1,178 +0,0 @@ -/* - * This file is subject to the terms of the GFX License. If a copy of - * the license was not distributed with this file, you can obtain one at: - * - * http://ugfx.org/license.html - */ - -/** - * @file drivers/gaudin/Win32/gaudin_lld.c - * @brief GAUDIN - Driver file for Win32. - */ - -#include "gfx.h" - -#if GFX_USE_GAUDIN - -/* Include the driver defines */ -#include "src/gaudin/driver.h" - -#undef Red -#undef Green -#undef Blue -#define WIN32_LEAN_AND_MEAN -#include <windows.h> -#include <stdio.h> -#include <mmsystem.h> - -static HWAVEIN ah; -static volatile int nUsedBuffers; -static WAVEHDR *pWaveHdrs; -static HANDLE waveInThread; -static DWORD threadID; - -/* -static void PrintWaveErrorMsg(DWORD err, TCHAR * str) -{ - #define BUFFERSIZE 128 - char buffer[BUFFERSIZE]; - - fprintf(stderr, "GAUDIN: ERROR 0x%08X: %s\r\n", err, str); - if (mciGetErrorString(err, &buffer[0], sizeof(buffer))) - fprintf(stderr, "%s\r\n", &buffer[0]); - else - fprintf(stderr, "0x%08X returned!\r\n", err); -} -*/ - -/**************************** waveInProc() ******************************* - * We don't use CALLBACK_FUNCTION because it is restricted to calling only - * a few particular Windows functions, namely some of the time functions, - * and a few of the Low Level MIDI API. If you violate this rule, your app can - * hang inside of the callback). One of the Windows API that a callback can't - * call is waveInAddBuffer() which is what we need to use whenever we receive a - * MM_WIM_DATA. My callback would need to defer that job to another thread - * anyway, so instead just use CALLBACK_THREAD here instead. - *************************************************************************/ - -DWORD WINAPI waveInProc(LPVOID arg) { - MSG msg; - bool_t isRecording; - (void) arg; - - isRecording = FALSE; - while (GetMessage(&msg, 0, 0, 0)) { - switch (msg.message) { - case MM_WIM_DATA: - GAUDIN_ISR_CompleteI((audin_sample_t *)((WAVEHDR *)msg.lParam)->lpData, ((WAVEHDR *)msg.lParam)->dwBytesRecorded/sizeof(audin_sample_t)); - - /* Are we still recording? */ - if (isRecording) { - /* Yes. Now we need to requeue this buffer so the driver can use it for another block of audio - * data. NOTE: We shouldn't need to waveInPrepareHeader() a WAVEHDR that has already been prepared once. - * Note: We are assuming here that both the application can still access the buffer while - * it is on the queue. - */ - waveInAddBuffer(ah, (WAVEHDR *)msg.lParam, sizeof(WAVEHDR)); - - } else { - /* We aren't recording, so another WAVEHDR has been returned to us after recording has stopped. - * When we get all of them back, DoneAll will be equal to how many WAVEHDRs we queued - */ - nUsedBuffers--; - waveInUnprepareHeader(ah, (WAVEHDR *)msg.lParam, sizeof(WAVEHDR)); - } - - break; - - case MM_WIM_OPEN: - isRecording = TRUE; - break; - - case MM_WIM_CLOSE: - isRecording = FALSE; - break; - } - } - return 0; -} - -/*===========================================================================*/ -/* External declarations. */ -/*===========================================================================*/ - -void gaudin_lld_init(const gaudin_params *paud) { -// uint16_t channel; -// uint32_t frequency; -// audin_sample_t *buffer; -// size_t bufcount; -// size_t samplesPerEvent; - WAVEFORMATEX wfx; - size_t spaceleft; - audin_sample_t *p; - WAVEHDR *phdr; - size_t nBuffers; - size_t sz; - - if (!waveInThread) { - if (!(waveInThread = CreateThread(0, 0, (LPTHREAD_START_ROUTINE)waveInProc, 0, 0, &threadID))) { - fprintf(stderr, "GAUDIN: Can't create WAVE recording thread\n"); - return; - } - CloseHandle(waveInThread); - } - - nUsedBuffers = 0; - - wfx.wFormatTag = WAVE_FORMAT_PCM; - wfx.nChannels = paud->channel == GAUDIN_STEREO ? 2 : 1; - wfx.nSamplesPerSec = paud->frequency; - wfx.nBlockAlign = wfx.nChannels * sizeof(audin_sample_t); - wfx.nAvgBytesPerSec = wfx.nSamplesPerSec * wfx.nBlockAlign; - wfx.wBitsPerSample = sizeof(audin_sample_t) * 8; - wfx.cbSize = 0; - - if (waveInOpen(&ah, WAVE_MAPPER, &wfx, (DWORD_PTR)threadID, (DWORD_PTR)paud, CALLBACK_THREAD)) { - fprintf(stderr, "GAUDIN: Can't open WAVE recording device\n"); - return; - } - - /* We need to allocate a wave header for each buffer */ - nBuffers = (paud->bufcount + paud->samplesPerEvent - 1) / paud->samplesPerEvent; - if (!(pWaveHdrs = gfxAlloc(nBuffers * sizeof(WAVEHDR)))) { - fprintf(stderr, "GAUDIN: Buffer header allocation failed\n"); - return; - } - - /* Prepare each buffer and send to the wavein device */ - spaceleft = paud->bufcount; - for(p = paud->buffer, phdr = pWaveHdrs, spaceleft = paud->bufcount; spaceleft; p += sz, phdr++, spaceleft -= sz) { - sz = spaceleft > paud->samplesPerEvent ? paud->samplesPerEvent : spaceleft; - phdr->dwBufferLength = sz * sizeof(audin_sample_t); - phdr->lpData = (LPSTR)p; - phdr->dwFlags = 0; - if (!waveInPrepareHeader(ah, phdr, sizeof(WAVEHDR)) - && !waveInAddBuffer(ah, phdr, sizeof(WAVEHDR))) - nUsedBuffers++; - else - fprintf(stderr, "GAUDIN: Buffer prepare failed\n"); - } - if (!nUsedBuffers) - fprintf(stderr, "GAUDIN: Failed to prepare any buffers\n"); -} - -void gadc_lld_start(void) { - if (nUsedBuffers) - waveInStart(ah); -} - -void gadc_lld_stop(void) { - waveInReset(ah); - while(nUsedBuffers) Sleep(1); - if (pWaveHdrs) { - gfxFree(pWaveHdrs); - pWaveHdrs = 0; - } -} - -#endif /* GFX_USE_GAUDIN */ |