^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef JPEG_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define JPEG_H 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Insert a JPEG header at start of frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * This module is used by the gspca subdrivers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * A special case is done for Conexant webcams.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Copyright (C) Jean-Francois Moine (http://moinejf.free.fr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * generation options
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * CONEX_CAM Conexant if present
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /* JPEG header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static const u8 jpeg_head[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 0xff, 0xd8, /* jpeg */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) /* quantization table quality 50% */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 0xff, 0xdb, 0x00, 0x84, /* DQT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define JPEG_QT0_OFFSET 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 0x10, 0x0b, 0x0c, 0x0e, 0x0c, 0x0a, 0x10, 0x0e,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 0x0d, 0x0e, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 0x1a, 0x18, 0x16, 0x16, 0x18, 0x31, 0x23, 0x25,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 0x1d, 0x28, 0x3a, 0x33, 0x3d, 0x3c, 0x39, 0x33,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 0x38, 0x37, 0x40, 0x48, 0x5c, 0x4e, 0x40, 0x44,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 0x57, 0x45, 0x37, 0x38, 0x50, 0x6d, 0x51, 0x57,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 0x5f, 0x62, 0x67, 0x68, 0x67, 0x3e, 0x4d, 0x71,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 0x79, 0x70, 0x64, 0x78, 0x5c, 0x65, 0x67, 0x63,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define JPEG_QT1_OFFSET 72
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 0x11, 0x12, 0x12, 0x18, 0x15, 0x18, 0x2f, 0x1a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 0x1a, 0x2f, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /* huffman table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 0xff, 0xc4, 0x01, 0xa2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x01, 0x00, 0x03,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 0x0a, 0x0b, 0x10, 0x00, 0x02, 0x01, 0x03, 0x03,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 0x02, 0x04, 0x03, 0x05, 0x05, 0x04, 0x04, 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 0x00, 0x01, 0x7d, 0x01, 0x02, 0x03, 0x00, 0x04,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72, 0x82,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x25,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 0x26, 0x27, 0x28, 0x29, 0x2a, 0x34, 0x35, 0x36,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45, 0x46,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54, 0x55, 0x56,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65, 0x66,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 0x67, 0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85, 0x86,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xc2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 0xda, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0x11, 0x00, 0x02,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 0x04, 0x04, 0x00, 0x01, 0x02, 0x77, 0x00, 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 0xc1, 0x09, 0x23, 0x33, 0x52, 0xf0, 0x15, 0x62,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 0xf1, 0x17, 0x18, 0x19, 0x1a, 0x26, 0x27, 0x28,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe2, 0xe3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #ifdef CONEX_CAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /* the Conexant frames start with SOF0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define JPEG_HDR_SZ 556
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 0xff, 0xc0, 0x00, 0x11, /* SOF0 (start of frame 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 0x08, /* data precision */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #define JPEG_HEIGHT_OFFSET 561
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 0x01, 0xe0, /* height */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 0x02, 0x80, /* width */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 0x03, /* component number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 0x21, /* samples Y */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 0x00, /* quant Y */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 0x02, 0x11, 0x01, /* samples CbCr - quant CbCr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 0x03, 0x11, 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 0xff, 0xda, 0x00, 0x0c, /* SOS (start of scan) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3f, 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) #define JPEG_HDR_SZ 589
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) /* define the JPEG header */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static void jpeg_define(u8 *jpeg_hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int height,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) int width,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) int samplesY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) memcpy(jpeg_hdr, jpeg_head, sizeof jpeg_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #ifndef CONEX_CAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) jpeg_hdr[JPEG_HEIGHT_OFFSET + 0] = height >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) jpeg_hdr[JPEG_HEIGHT_OFFSET + 1] = height;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) jpeg_hdr[JPEG_HEIGHT_OFFSET + 2] = width >> 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) jpeg_hdr[JPEG_HEIGHT_OFFSET + 3] = width;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) jpeg_hdr[JPEG_HEIGHT_OFFSET + 6] = samplesY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) /* set the JPEG quality */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static void jpeg_set_qual(u8 *jpeg_hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) int quality)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) int i, sc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (quality <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) sc = 5000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) else if (quality < 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) sc = 5000 / quality;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) sc = 200 - quality * 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) for (i = 0; i < 64; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) jpeg_hdr[JPEG_QT0_OFFSET + i] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) (jpeg_head[JPEG_QT0_OFFSET + i] * sc + 50) / 100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) jpeg_hdr[JPEG_QT1_OFFSET + i] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) (jpeg_head[JPEG_QT1_OFFSET + i] * sc + 50) / 100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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