0x01, /* u8 bTerminalLink */ 0x00, /* u8 bDelay */ 0x01, 0x00, /* u16 wFormatTag */ } },{ /* Headphone Type I Format Type Descriptor */ .data = (uint8_t[]) { 0x0b, /* u8 bLength */ USB_DT_CS_INTERFACE, /* u8 bDescriptorType */ DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */ 0x01, /* u8 bFormatType */ 0x02, /* u8 bNrChannels */ 0x02, /* u8 bSubFrameSize */ 0x10, /* u8 bBitResolution */ 0x01, /* u8 bSamFreqType */ U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */ } } }, .eps = (USBDescEndpoint[]) { { .bEndpointAddress = USB_DIR_OUT | 0x01, .bmAttributes = 0x0d, .wMaxPacketSize = USBAUDIO_PACKET_SIZE, .bInterval = 1, .is_audio = 1, /* Stereo Headphone Class-specific AS Audio Data Endpoint Descriptor */ .extra = (uint8_t[]) { 0x07, /* u8 bLength */ USB_DT_CS_ENDPOINT, /* u8 bDescriptorType */
/*************************************************************************** Proto: M4VIFI_UInt8 M4VIFI_RGB888toYUV420(void *pUserData, M4VIFI_ImagePlane *PlaneIn, M4VIFI_ImagePlane PlaneOut[3]); Purpose: filling of the YUV420 plane from a BGR24 plane Abstract: Loop on each row ( 2 rows by 2 rows ) Loop on each column ( 2 col by 2 col ) Get 4 BGR samples from input data and build 4 output Y samples and each single U & V data end loop on col end loop on row In: RGB24 plane InOut: none Out: array of 3 M4VIFI_ImagePlane structures Modified: ML: RGB function modified to BGR. ***************************************************************************/ M4VIFI_UInt8 M4VIFI_RGB888toYUV420(void *pUserData, M4VIFI_ImagePlane *PlaneIn, M4VIFI_ImagePlane PlaneOut[3]) { M4VIFI_UInt32 u32_width, u32_height; M4VIFI_UInt32 u32_stride_Y, u32_stride2_Y, u32_stride_U, u32_stride_V, u32_stride_rgb,\ u32_stride_2rgb; M4VIFI_UInt32 u32_col, u32_row; M4VIFI_Int32 i32_r00, i32_r01, i32_r10, i32_r11; M4VIFI_Int32 i32_g00, i32_g01, i32_g10, i32_g11; M4VIFI_Int32 i32_b00, i32_b01, i32_b10, i32_b11; M4VIFI_Int32 i32_y00, i32_y01, i32_y10, i32_y11; M4VIFI_Int32 i32_u00, i32_u01, i32_u10, i32_u11; M4VIFI_Int32 i32_v00, i32_v01, i32_v10, i32_v11; M4VIFI_UInt8 *pu8_yn, *pu8_ys, *pu8_u, *pu8_v; M4VIFI_UInt8 *pu8_y_data, *pu8_u_data, *pu8_v_data; M4VIFI_UInt8 *pu8_rgbn_data, *pu8_rgbn; /* check sizes */ if( (PlaneIn->u_height != PlaneOut[0].u_height) || (PlaneOut[0].u_height != (PlaneOut[1].u_height<<1)) || (PlaneOut[0].u_height != (PlaneOut[2].u_height<<1))) return M4VIFI_ILLEGAL_FRAME_HEIGHT; if( (PlaneIn->u_width != PlaneOut[0].u_width) || (PlaneOut[0].u_width != (PlaneOut[1].u_width<<1)) || (PlaneOut[0].u_width != (PlaneOut[2].u_width<<1))) return M4VIFI_ILLEGAL_FRAME_WIDTH; /* set the pointer to the beginning of the output data buffers */ pu8_y_data = PlaneOut[0].pac_data + PlaneOut[0].u_topleft; pu8_u_data = PlaneOut[1].pac_data + PlaneOut[1].u_topleft; pu8_v_data = PlaneOut[2].pac_data + PlaneOut[2].u_topleft; /* idem for input buffer */ pu8_rgbn_data = PlaneIn->pac_data + PlaneIn->u_topleft; /* get the size of the output image */ u32_width = PlaneOut[0].u_width; u32_height = PlaneOut[0].u_height; /* set the size of the memory jumps corresponding to row jump in each output plane */ u32_stride_Y = PlaneOut[0].u_stride; u32_stride2_Y= u32_stride_Y << 1; u32_stride_U = PlaneOut[1].u_stride; u32_stride_V = PlaneOut[2].u_stride; /* idem for input plane */ u32_stride_rgb = PlaneIn->u_stride; u32_stride_2rgb = u32_stride_rgb << 1; /* loop on each row of the output image, input coordinates are estimated from output ones */ /* two YUV rows are computed at each pass */ for (u32_row = u32_height ; u32_row != 0; u32_row -=2) { /* update working pointers */ pu8_yn = pu8_y_data; pu8_ys = pu8_yn + u32_stride_Y; pu8_u = pu8_u_data; pu8_v = pu8_v_data; pu8_rgbn= pu8_rgbn_data; /* loop on each column of the output image*/ for (u32_col = u32_width; u32_col != 0 ; u32_col -=2) { /* get RGB samples of 4 pixels */ GET_RGB24(i32_r00, i32_g00, i32_b00, pu8_rgbn, 0); GET_RGB24(i32_r10, i32_g10, i32_b10, pu8_rgbn, CST_RGB_24_SIZE); GET_RGB24(i32_r01, i32_g01, i32_b01, pu8_rgbn, u32_stride_rgb); GET_RGB24(i32_r11, i32_g11, i32_b11, pu8_rgbn, u32_stride_rgb + CST_RGB_24_SIZE); i32_u00 = U24(i32_r00, i32_g00, i32_b00); i32_v00 = V24(i32_r00, i32_g00, i32_b00); i32_y00 = Y24(i32_r00, i32_g00, i32_b00); /* matrix luminance */ pu8_yn[0]= (M4VIFI_UInt8)i32_y00; i32_u10 = U24(i32_r10, i32_g10, i32_b10); i32_v10 = V24(i32_r10, i32_g10, i32_b10); i32_y10 = Y24(i32_r10, i32_g10, i32_b10); pu8_yn[1]= (M4VIFI_UInt8)i32_y10; i32_u01 = U24(i32_r01, i32_g01, i32_b01); i32_v01 = V24(i32_r01, i32_g01, i32_b01); i32_y01 = Y24(i32_r01, i32_g01, i32_b01); pu8_ys[0]= (M4VIFI_UInt8)i32_y01; i32_u11 = U24(i32_r11, i32_g11, i32_b11); i32_v11 = V24(i32_r11, i32_g11, i32_b11); i32_y11 = Y24(i32_r11, i32_g11, i32_b11); pu8_ys[1] = (M4VIFI_UInt8)i32_y11; *pu8_u = (M4VIFI_UInt8)((i32_u00 + i32_u01 + i32_u10 + i32_u11 + 2) >> 2); *pu8_v = (M4VIFI_UInt8)((i32_v00 + i32_v01 + i32_v10 + i32_v11 + 2) >> 2); pu8_rgbn += (CST_RGB_24_SIZE<<1); pu8_yn += 2; pu8_ys += 2; pu8_u ++; pu8_v ++; } /* end of horizontal scanning */ pu8_y_data += u32_stride2_Y; pu8_u_data += u32_stride_U; pu8_v_data += u32_stride_V; pu8_rgbn_data += u32_stride_2rgb; } /* End of vertical scanning */ return M4VIFI_OK; }