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Break QR code reader trying to make it faster

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This commit is contained in:
Alex Taber
2017-09-07 13:08:38 -04:00
parent 62f4356a17
commit 0871f4f30b
1 changed files with 34 additions and 14 deletions
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44
source/camera.c
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@@ -31,19 +31,34 @@
#include "fs.h" #include "fs.h"
#include "themes.h" #include "themes.h"
u32 transfer_size;
Handle events[2] = {0};
void init_qr(void) void init_qr(void)
{ {
camInit(); camInit();
CAMU_SetSize(SELECT_OUT1_OUT2, SIZE_CTR_TOP_LCD, CONTEXT_A); CAMU_SetSize(SELECT_OUT1_OUT2, SIZE_CTR_TOP_LCD, CONTEXT_A);
CAMU_SetOutputFormat(SELECT_OUT1_OUT2, OUTPUT_RGB_565, CONTEXT_A); CAMU_SetOutputFormat(SELECT_OUT1_OUT2, OUTPUT_RGB_565, CONTEXT_A);
CAMU_SetFrameRate(SELECT_OUT1_OUT2, FRAME_RATE_30);
CAMU_SetNoiseFilter(SELECT_OUT1_OUT2, true); CAMU_SetNoiseFilter(SELECT_OUT1_OUT2, true);
CAMU_SetAutoExposure(SELECT_OUT1_OUT2, true); CAMU_SetAutoExposure(SELECT_OUT1_OUT2, true);
CAMU_SetAutoWhiteBalance(SELECT_OUT1_OUT2, true); CAMU_SetAutoWhiteBalance(SELECT_OUT1_OUT2, true);
CAMU_SetTrimming(PORT_CAM1, false); CAMU_Activate(SELECT_OUT1_OUT2);
CAMU_GetBufferErrorInterruptEvent(&events[1], PORT_BOTH);
CAMU_SetTrimming(PORT_BOTH, false);
CAMU_GetMaxBytes(&transfer_size, 400, 240);
CAMU_SetTransferBytes(PORT_BOTH, transfer_size, 400, 240);
CAMU_SynchronizeVsyncTiming(SELECT_OUT1, SELECT_OUT2);
CAMU_ClearBuffer(PORT_BOTH);
buf = malloc(sizeof(u16) * 400 * 240 * 2); buf = malloc(sizeof(u16) * 400 * 240 * 2);
CAMU_SetReceiving(&events[0], buf, PORT_CAM1, 240 * 400 * 2, transfer_size);
CAMU_StartCapture(PORT_BOTH);
context = quirc_new(); context = quirc_new();
quirc_resize(context, 400, 240); quirc_resize(context, 400, 240);
@@ -51,6 +66,8 @@ void init_qr(void)
void exit_qr(void) void exit_qr(void)
{ {
CAMU_Activate(PORT_NONE);
CAMU_StopCapture(PORT_BOTH);
CAMU_Activate(SELECT_NONE); CAMU_Activate(SELECT_NONE);
camExit(); camExit();
quirc_destroy(context); quirc_destroy(context);
@@ -59,19 +76,22 @@ void exit_qr(void)
void take_picture(void) void take_picture(void)
{ {
u32 transfer_size; s32 index;
Handle cam_handle = 0; svcWaitSynchronizationN(&index, events, 2, false, U64_MAX);
CAMU_GetMaxBytes(&transfer_size, 400, 240); if (index == 0)
CAMU_SetTransferBytes(PORT_BOTH, transfer_size, 400, 240); {
CAMU_Activate(SELECT_OUT1_OUT2); svcCloseHandle(events[0]);
events[0] = 0;
CAMU_SetReceiving(&events[0], buf, PORT_CAM1, 240 * 400 * 2, transfer_size);
} else if (index == 1)
{
svcCloseHandle(events[1]);
events[1] = 0;
CAMU_ClearBuffer(PORT_BOTH); CAMU_ClearBuffer(PORT_BOTH);
CAMU_SynchronizeVsyncTiming(SELECT_OUT1, SELECT_OUT2); CAMU_SetReceiving(&events[0], buf, PORT_CAM1, 240 * 400 * 2, transfer_size);
CAMU_StartCapture(PORT_BOTH); CAMU_StartCapture(PORT_BOTH);
CAMU_SetReceiving(&cam_handle, buf, PORT_CAM1, 400 * 240 * 2, transfer_size); }
svcWaitSynchronization(cam_handle, U64_MAX);
CAMU_StopCapture(PORT_BOTH);
svcCloseHandle(cam_handle);
CAMU_Activate(PORT_NONE);
} }
/* /*