Daiki Kato
Sample of NTSC 2ch input.
Dependencies: GR-PEACH_video LCD_shield_config
概要
2系統のNTSC入力をLCDの左右に分けて表示するサンプルです。
ハードウエア機能を用いることで起動時にビデオ入力とLCD出力の設定した後は自動で動作し続けます。そのため、起動後のCPU負荷が少ないのが特徴です。
機能設定
下記のマクロを変更することで、一部機能を変更できます。
main.cpp
/**** User Selection *********/ /** Camera setting **/ #define VIDEO_INPUT_FORMAT (VIDEO_YCBCR422) /* Select VIDEO_YCBCR422 or VIDEO_RGB888 or VIDEO_RGB565 */ #define VIDEO_PAL (0) /* Select 0(NTSC) or 1(PAL) If selecting VIDEO_CVBS, this parameter is not referenced.) */ /** LCD setting **/ #define LCD_TYPE (0) /* Select 0(4.3inch) or 1(7.1inch) */ /*****************************/
| VIDEO_INPUT_FORMAT | VIDEO_YCBCR422、VIDEO_RGB888、VIDEO_RGB565から選択できます。 |
|---|---|
| VIDEO_PAL | 0を設定するとNTSC、1を設定するとPALの設定となります。 |
| LCD_TYPE | 0を設定するとGR-PEACH 4.3 inch LCD Shield、1を設定するとGR-PEACH 7.1 inch LCD Shieldの設定となります。 |
また、下記関数の引数を変更することで、入力画像の表示位置や大きさを変更できます。
(Output bufferの範囲を超えるような値は設定しないでください。幅は16の倍数、高さは8の倍数を設定してください。)
main.cpp main()
/* Start of Video ch0 */
Start_Video(
DisplayBase::VIDEO_INPUT_CHANNEL_0, /* Video input channe */
user_frame_buffer0, /* Output buffer */
0, /* The x coordinate of the upper-left corner */
0, /* The y coordinate of the upper-left corner */
(LCD_PIXEL_WIDTH / 2), /* width (A multiple of 16) */
LCD_PIXEL_HEIGHT /* height (A multiple of 8) */
);
(上記の例はNTSC1Aの入力をLCDの画面左側に表示するための設定です。入力画像の高さはLCD画面サイズと同じ、幅は画面サイズの1/2に設定しています。)
構成
GR-PEACH、GR-PEACH 4.3 inch LCD Shield または GR-PEACH 7.1 inch LCD Shield、GR-PEACH AUDIO CAMERA Shield。
GR-PEACH AUDIO CAMERA Shieldを使用しない場合は、NTSC1Aピン、および、NTSC1Bピンにアナログ信号を入力してください。
(写真はNTSC1Aピン(黄色)とGNDピン(黒)を引き出した例です。)
Diff: main.cpp
- Revision:
- 0:f8cb87301ad8
- Child:
- 1:e59e938472ac
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Mon Aug 08 12:59:36 2016 +0000
@@ -0,0 +1,212 @@
+#include "mbed.h"
+#include "DisplayBace.h"
+#include "rtos.h"
+
+#define VIDEO_YCBCR422 (0)
+#define VIDEO_RGB888 (1)
+#define VIDEO_RGB565 (2)
+
+/**** User Selection *********/
+/** Camera setting **/
+#define VIDEO_INPUT_FORMAT (VIDEO_YCBCR422) /* Select VIDEO_YCBCR422 or VIDEO_RGB888 or VIDEO_RGB565 */
+#define VIDEO_PAL (0) /* Select 0(NTSC) or 1(PAL) If selecting VIDEO_CVBS, this parameter is not referenced.) */
+/** LCD setting **/
+#define LCD_TYPE (0) /* Select 0(4.3inch) or 1(7.1inch) */
+/*****************************/
+
+/** LCD shield config **/
+#if (LCD_TYPE == 0)
+ #include "LCD_shield_config_4_3inch.h"
+#else
+ #include "LCD_shield_config_7_1inch.h"
+#endif
+
+/** Video and Grapics (GRAPHICS_LAYER_0) parameter **/
+/* NTSC or PAL */
+#if VIDEO_PAL == 0
+ #define COL_SYS (DisplayBase::COL_SYS_NTSC_358)
+#else
+ #define COL_SYS (DisplayBase::COL_SYS_PAL_443)
+#endif
+
+/* Video input and LCD layer 0 output */
+#if VIDEO_INPUT_FORMAT == VIDEO_YCBCR422
+ #define VIDEO_FORMAT (DisplayBase::VIDEO_FORMAT_YCBCR422)
+ #define GRAPHICS_FORMAT (DisplayBase::GRAPHICS_FORMAT_YCBCR422)
+ #define WR_RD_WRSWA (DisplayBase::WR_RD_WRSWA_NON)
+#elif VIDEO_INPUT_FORMAT == VIDEO_RGB565
+ #define VIDEO_FORMAT (DisplayBase::VIDEO_FORMAT_RGB565)
+ #define GRAPHICS_FORMAT (DisplayBase::GRAPHICS_FORMAT_RGB565)
+ #define WR_RD_WRSWA (DisplayBase::WR_RD_WRSWA_32_16BIT)
+#else
+ #define VIDEO_FORMAT (DisplayBase::VIDEO_FORMAT_RGB888)
+ #define GRAPHICS_FORMAT (DisplayBase::GRAPHICS_FORMAT_RGB888)
+ #define WR_RD_WRSWA (DisplayBase::WR_RD_WRSWA_32BIT)
+#endif
+
+/* The size of the video input is adjusted to the LCD size. */
+#define VIDEO_PIXEL_HW LCD_PIXEL_WIDTH
+#define VIDEO_PIXEL_VW LCD_PIXEL_HEIGHT
+
+/*! Frame buffer stride: Frame buffer stride should be set to a multiple of 32 or 128
+ in accordance with the frame buffer burst transfer mode. */
+/* FRAME BUFFER Parameter GRAPHICS_LAYER_0 */
+#if ( VIDEO_INPUT_FORMAT == VIDEO_YCBCR422 || VIDEO_INPUT_FORMAT == VIDEO_RGB565 )
+ #define FRAME_BUFFER_BYTE_PER_PIXEL (2u)
+#else
+ #define FRAME_BUFFER_BYTE_PER_PIXEL (4u)
+#endif
+#define FRAME_BUFFER_STRIDE (((LCD_PIXEL_WIDTH * FRAME_BUFFER_BYTE_PER_PIXEL) + 31u) & ~31u)
+
+static DisplayBase Display;
+static DigitalOut lcd_pwon(P7_15);
+static DigitalOut lcd_blon(P8_1);
+static PwmOut lcd_cntrst(P8_15);
+static DigitalOut led_blue(LED_BLUE);
+
+#if defined(__ICCARM__)
+/* 32 bytes aligned */
+#pragma data_alignment=32
+static uint8_t user_frame_buffer0[FRAME_BUFFER_STRIDE * LCD_PIXEL_HEIGHT];
+#pragma data_alignment=4
+#else
+/* 32 bytes aligned */
+static uint8_t user_frame_buffer0[FRAME_BUFFER_STRIDE * LCD_PIXEL_HEIGHT]__attribute((aligned(32)));
+#endif
+static bool graphics_init_end = false;
+
+/****** LCD ******/
+static void Init_LCD_Display(void) {
+ DisplayBase::graphics_error_t error;
+ DisplayBase::lcd_config_t lcd_config;
+ PinName lvds_pin[8] = {
+ /* data pin */
+ P5_7, P5_6, P5_5, P5_4, P5_3, P5_2, P5_1, P5_0
+ };
+
+ lcd_pwon = 0;
+ lcd_blon = 0;
+ Thread::wait(100);
+ lcd_pwon = 1;
+ lcd_blon = 1;
+
+ Display.Graphics_Lvds_Port_Init(lvds_pin, 8);
+
+ /* Graphics initialization process */
+ lcd_config = LcdCfgTbl_LCD_shield;
+ error = Display.Graphics_init(&lcd_config);
+ if (error != DisplayBase::GRAPHICS_OK) {
+ printf("Line %d, error %d\n", __LINE__, error);
+ mbed_die();
+ }
+ graphics_init_end = true;
+}
+
+static void Start_LCD_Display(uint8_t * p_buf) {
+ DisplayBase::rect_t rect;
+
+ rect.vs = 0;
+ rect.vw = LCD_PIXEL_HEIGHT;
+ rect.hs = 0;
+ rect.hw = LCD_PIXEL_WIDTH;
+ Display.Graphics_Read_Setting(
+ DisplayBase::GRAPHICS_LAYER_0,
+ (void *)p_buf,
+ FRAME_BUFFER_STRIDE,
+ GRAPHICS_FORMAT,
+ WR_RD_WRSWA,
+ &rect
+ );
+ Display.Graphics_Start(DisplayBase::GRAPHICS_LAYER_0);
+}
+
+/****** Video ******/
+static void Init_Video(void) {
+ DisplayBase::graphics_error_t error;
+
+ /* Graphics initialization process */
+ if (graphics_init_end == false) {
+ /* When not initializing LCD, this processing is needed. */
+ error = Display.Graphics_init(NULL);
+ if (error != DisplayBase::GRAPHICS_OK) {
+ printf("Line %d, error %d\n", __LINE__, error);
+ mbed_die();
+ }
+ graphics_init_end = true;
+ }
+
+ error = Display.Graphics_Video_init( DisplayBase::INPUT_SEL_VDEC, NULL);
+ if( error != DisplayBase::GRAPHICS_OK ) {
+ printf("Line %d, error %d\n", __LINE__, error);
+ mbed_die();
+ }
+}
+
+static void Start_Video(DisplayBase::video_input_channel_t ch, uint8_t * p_buf) {
+ DisplayBase::graphics_error_t error;
+
+ /* Video capture setting (progressive form fixed) */
+ error = Display.Video_Write_Setting(
+ ch,
+ COL_SYS,
+ p_buf,
+ FRAME_BUFFER_STRIDE,
+ VIDEO_FORMAT,
+ WR_RD_WRSWA,
+ VIDEO_PIXEL_VW,
+ VIDEO_PIXEL_HW / 2
+ );
+ if (error != DisplayBase::GRAPHICS_OK) {
+ printf("Line %d, error %d\n", __LINE__, error);
+ mbed_die();
+ }
+
+ /* Video write process start */
+ error = Display.Video_Start(ch);
+ if (error != DisplayBase::GRAPHICS_OK) {
+ printf("Line %d, error %d\n", __LINE__, error);
+ mbed_die();
+ }
+
+ /* Video write process stop */
+ error = Display.Video_Stop(ch);
+ if (error != DisplayBase::GRAPHICS_OK) {
+ printf("Line %d, error %d\n", __LINE__, error);
+ mbed_die();
+ }
+
+ /* Video write process start */
+ error = Display.Video_Start(ch);
+ if (error != DisplayBase::GRAPHICS_OK) {
+ printf("Line %d, error %d\n", __LINE__, error);
+ mbed_die();
+ }
+}
+
+/****** main ******/
+int main(void) {
+ /* Initialization of LCD */
+ Init_LCD_Display(); /* When using LCD, please call before than Init_Video(). */
+
+ /* Initialization of Video */
+ Init_Video();
+
+ /* Initialization memory */
+ memset(user_frame_buffer0, 0, (FRAME_BUFFER_STRIDE * LCD_PIXEL_HEIGHT));
+
+ /* Start of Video */
+ Start_Video(DisplayBase::VIDEO_INPUT_CHANNEL_0, &user_frame_buffer0[0]);
+ Start_Video(DisplayBase::VIDEO_INPUT_CHANNEL_1, &user_frame_buffer0[FRAME_BUFFER_STRIDE / 2]);
+
+ /* Start of LCD */
+ Start_LCD_Display(&user_frame_buffer0[0]);
+
+ /* Backlight on */
+ Thread::wait(200);
+ lcd_cntrst.write(1.0);
+
+ while (1) {
+ led_blue = !led_blue;
+ Thread::wait(1000);
+ }
+}