diff options
Diffstat (limited to 'drivers/media/video/gspca/jpeg.h')
| -rw-r--r-- | drivers/media/video/gspca/jpeg.h | 263 |
1 files changed, 65 insertions, 198 deletions
diff --git a/drivers/media/video/gspca/jpeg.h b/drivers/media/video/gspca/jpeg.h index d823b47bd4e6..de63c36806c0 100644 --- a/drivers/media/video/gspca/jpeg.h +++ b/drivers/media/video/gspca/jpeg.h @@ -24,171 +24,39 @@ * */ -/* start of jpeg frame + quantization table */ -static const unsigned char quant[][0x88] = { -/* index 0 - Q40*/ - { +/* + * generation options + * CONEX_CAM Conexant if present + */ + +/* JPEG header */ +static const u8 jpeg_head[] = { 0xff, 0xd8, /* jpeg */ - 0xff, 0xdb, 0x00, 0x84, /* DQT */ -0, /* quantization table part 1 */ - 20, 14, 15, 18, 15, 13, 20, 18, 16, 18, 23, 21, 20, 24, 30, 50, - 33, 30, 28, 28, 30, 61, 44, 46, 36, 50, 73, 64, 76, 75, 71, 64, - 70, 69, 80, 90, 115, 98, 80, 85, 109, 86, 69, 70, 100, 136, 101, - 109, - 119, 123, 129, 130, 129, 78, 96, 141, 151, 140, 125, 150, 115, - 126, 129, 124, -1, /* quantization table part 2 */ - 21, 23, 23, 30, 26, 30, 59, 33, 33, 59, 124, 83, 70, 83, 124, 124, - 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, - 124, 124, 124, - 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, - 124, 124, 124, - 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, 124, - 124, 124, 124}, -/* index 1 - Q50 */ - { - 0xff, 0xd8, - 0xff, 0xdb, 0x00, 0x84, /* DQT */ -0, - 16, 11, 12, 14, 12, 10, 16, 14, 13, 14, 18, 17, 16, 19, 24, 40, - 26, 24, 22, 22, 24, 49, 35, 37, 29, 40, 58, 51, 61, 60, 57, 51, - 56, 55, 64, 72, 92, 78, 64, 68, 87, 69, 55, 56, 80, 109, 81, 87, - 95, 98, 103, 104, 103, 62, 77, 113, 121, 112, 100, 120, 92, 101, - 103, 99, -1, - 17, 18, 18, 24, 21, 24, 47, 26, 26, 47, 99, 66, 56, 66, 99, 99, - 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, - 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, - 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99}, -/* index 2 Q60 */ - { - 0xff, 0xd8, - 0xff, 0xdb, 0x00, 0x84, /* DQT */ -0, - 13, 9, 10, 11, 10, 8, 13, 11, 10, 11, 14, 14, 13, 15, 19, 32, - 21, 19, 18, 18, 19, 39, 28, 30, 23, 32, 46, 41, 49, 48, 46, 41, - 45, 44, 51, 58, 74, 62, 51, 54, 70, 55, 44, 45, 64, 87, 65, 70, - 76, 78, 82, 83, 82, 50, 62, 90, 97, 90, 80, 96, 74, 81, 82, 79, -1, - 14, 14, 14, 19, 17, 19, 38, 21, 21, 38, 79, 53, 45, 53, 79, 79, - 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, - 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, - 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79, 79}, -/* index 3 - Q70 */ - { - 0xff, 0xd8, - 0xff, 0xdb, 0x00, 0x84, /* DQT */ -0, - 10, 7, 7, 8, 7, 6, 10, 8, 8, 8, 11, 10, 10, 11, 14, 24, - 16, 14, 13, 13, 14, 29, 21, 22, 17, 24, 35, 31, 37, 36, 34, 31, - 34, 33, 38, 43, 55, 47, 38, 41, 52, 41, 33, 34, 48, 65, 49, 52, - 57, 59, 62, 62, 62, 37, 46, 68, 73, 67, 60, 72, 55, 61, 62, 59, -1, - 10, 11, 11, 14, 13, 14, 28, 16, 16, 28, 59, 40, 34, 40, 59, 59, - 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, - 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, - 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59, 59}, -/* index 4 - Q80 */ - { - 0xff, 0xd8, - 0xff, 0xdb, 0x00, 0x84, /* DQT */ -0, - 6, 4, 5, 6, 5, 4, 6, 6, 5, 6, 7, 7, 6, 8, 10, 16, - 10, 10, 9, 9, 10, 20, 14, 15, 12, 16, 23, 20, 24, 24, 23, 20, - 22, 22, 26, 29, 37, 31, 26, 27, 35, 28, 22, 22, 32, 44, 32, 35, - 38, 39, 41, 42, 41, 25, 31, 45, 48, 45, 40, 48, 37, 40, 41, 40, -1, - 7, 7, 7, 10, 8, 10, 19, 10, 10, 19, 40, 26, 22, 26, 40, 40, - 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, - 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, - 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40}, -/* index 5 - Q85 */ - { - 0xff, 0xd8, - 0xff, 0xdb, 0x00, 0x84, /* DQT */ -0, - 5, 3, 4, 4, 4, 3, 5, 4, 4, 4, 5, 5, 5, 6, 7, 12, - 8, 7, 7, 7, 7, 15, 11, 11, 9, 12, 17, 15, 18, 18, 17, 15, - 17, 17, 19, 22, 28, 23, 19, 20, 26, 21, 17, 17, 24, 33, 24, 26, - 29, 29, 31, 31, 31, 19, 23, 34, 36, 34, 30, 36, 28, 30, 31, 30, -1, - 5, 5, 5, 7, 6, 7, 14, 8, 8, 14, 30, 20, 17, 20, 30, 30, - 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, - 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, - 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30}, -/* index 6 - 86 */ -{ - 0xff, 0xd8, - 0xff, 0xdb, 0x00, 0x84, /* DQT */ -0, - 0x04, 0x03, 0x03, 0x04, 0x03, 0x03, 0x04, 0x04, - 0x04, 0x04, 0x05, 0x05, 0x04, 0x05, 0x07, 0x0B, - 0x07, 0x07, 0x06, 0x06, 0x07, 0x0E, 0x0A, 0x0A, - 0x08, 0x0B, 0x10, 0x0E, 0x11, 0x11, 0x10, 0x0E, - 0x10, 0x0F, 0x12, 0x14, 0x1A, 0x16, 0x12, 0x13, - 0x18, 0x13, 0x0F, 0x10, 0x16, 0x1F, 0x17, 0x18, - 0x1B, 0x1B, 0x1D, 0x1D, 0x1D, 0x11, 0x16, 0x20, - 0x22, 0x1F, 0x1C, 0x22, 0x1A, 0x1C, 0x1D, 0x1C, -1, - 0x05, 0x05, 0x05, 0x07, 0x06, 0x07, 0x0D, 0x07, - 0x07, 0x0D, 0x1C, 0x12, 0x10, 0x12, 0x1C, 0x1C, - 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, - 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, - 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, - 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, - 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, - 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, 0x1C, - }, -/* index 7 - 88 */ -{ - 0xff, 0xd8, - 0xff, 0xdb, 0x00, 0x84, /* DQT */ -0, - 0x04, 0x03, 0x03, 0x03, 0x03, 0x02, 0x04, 0x03, - 0x03, 0x03, 0x04, 0x04, 0x04, 0x05, 0x06, 0x0A, - 0x06, 0x06, 0x05, 0x05, 0x06, 0x0C, 0x08, 0x09, - 0x07, 0x0A, 0x0E, 0x0C, 0x0F, 0x0E, 0x0E, 0x0C, - 0x0D, 0x0D, 0x0F, 0x11, 0x16, 0x13, 0x0F, 0x10, - 0x15, 0x11, 0x0D, 0x0D, 0x13, 0x1A, 0x13, 0x15, - 0x17, 0x18, 0x19, 0x19, 0x19, 0x0F, 0x12, 0x1B, - 0x1D, 0x1B, 0x18, 0x1D, 0x16, 0x18, 0x19, 0x18, -1, - 0x04, 0x04, 0x04, 0x06, 0x05, 0x06, 0x0B, 0x06, - 0x06, 0x0B, 0x18, 0x10, 0x0D, 0x10, 0x18, 0x18, - 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, - 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, - 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, - 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, - 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, - 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, -}, -/* index 8 - ?? */ -{ - 0xff, 0xd8, + +/* quantization table quality 50% */ 0xff, 0xdb, 0x00, 0x84, /* DQT */ 0, - 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, - 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x03, 0x05, - 0x03, 0x03, 0x03, 0x03, 0x03, 0x06, 0x04, 0x05, - 0x04, 0x05, 0x07, 0x06, 0x08, 0x08, 0x07, 0x06, - 0x07, 0x07, 0x08, 0x09, 0x0C, 0x0A, 0x08, 0x09, - 0x0B, 0x09, 0x07, 0x07, 0x0A, 0x0E, 0x0A, 0x0B, - 0x0C, 0x0C, 0x0D, 0x0D, 0x0D, 0x08, 0x0A, 0x0E, - 0x0F, 0x0E, 0x0D, 0x0F, 0x0C, 0x0D, 0x0D, 0x0C, +#define JPEG_QT0_OFFSET 7 + 0x10, 0x0b, 0x0c, 0x0e, 0x0c, 0x0a, 0x10, 0x0e, + 0x0d, 0x0e, 0x12, 0x11, 0x10, 0x13, 0x18, 0x28, + 0x1a, 0x18, 0x16, 0x16, 0x18, 0x31, 0x23, 0x25, + 0x1d, 0x28, 0x3a, 0x33, 0x3d, 0x3c, 0x39, 0x33, + 0x38, 0x37, 0x40, 0x48, 0x5c, 0x4e, 0x40, 0x44, + 0x57, 0x45, 0x37, 0x38, 0x50, 0x6d, 0x51, 0x57, + 0x5f, 0x62, 0x67, 0x68, 0x67, 0x3e, 0x4d, 0x71, + 0x79, 0x70, 0x64, 0x78, 0x5c, 0x65, 0x67, 0x63, 1, - 0x02, 0x02, 0x02, 0x03, 0x03, 0x03, 0x06, 0x03, - 0x03, 0x06, 0x0C, 0x08, 0x07, 0x08, 0x0C, 0x0C, - 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, - 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, - 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, - 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, - 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, - 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C -} -}; +#define JPEG_QT1_OFFSET 72 + 0x11, 0x12, 0x12, 0x18, 0x15, 0x18, 0x2f, 0x1a, + 0x1a, 0x2f, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63, + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, + 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63, -/* huffman table + start of SOF0 */ -static unsigned char huffman[] = { +/* huffman table */ 0xff, 0xc4, 0x01, 0xa2, 0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, @@ -244,58 +112,57 @@ static unsigned char huffman[] = { 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, #ifdef CONEX_CAM /* the Conexant frames start with SOF0 */ +#define JPEG_HDR_SZ 556 #else 0xff, 0xc0, 0x00, 0x11, /* SOF0 (start of frame 0 */ 0x08, /* data precision */ -#endif -}; - -#ifndef CONEX_CAM -/* variable part: - * 0x01, 0xe0, height - * 0x02, 0x80, width - * 0x03, component number - * 0x01, - * 0x21, samples Y - */ - -/* end of header */ -static unsigned char eoh[] = { +#define JPEG_HEIGHT_OFFSET 561 + 0x01, 0xe0, /* height */ + 0x02, 0x80, /* width */ + 0x03, /* component number */ + 0x01, + 0x21, /* samples Y */ 0x00, /* quant Y */ 0x02, 0x11, 0x01, /* samples CbCr - quant CbCr */ 0x03, 0x11, 0x01, 0xff, 0xda, 0x00, 0x0c, /* SOS (start of scan) */ 0x03, 0x01, 0x00, 0x02, 0x11, 0x03, 0x11, 0x00, 0x3f, 0x00 -}; +#define JPEG_HDR_SZ 589 #endif +}; -/* -- output the JPEG header -- */ -static void jpeg_put_header(struct gspca_dev *gspca_dev, - struct gspca_frame *frame, - int qindex, - int samplesY) +/* define the JPEG header */ +static void jpeg_define(u8 *jpeg_hdr, + int height, + int width, + int samplesY) { + memcpy(jpeg_hdr, jpeg_head, sizeof jpeg_head); #ifndef CONEX_CAM - unsigned char tmpbuf[8]; + jpeg_hdr[JPEG_HEIGHT_OFFSET + 0] = height >> 8; + jpeg_hdr[JPEG_HEIGHT_OFFSET + 1] = height & 0xff; + jpeg_hdr[JPEG_HEIGHT_OFFSET + 2] = width >> 8; + jpeg_hdr[JPEG_HEIGHT_OFFSET + 3] = width & 0xff; + jpeg_hdr[JPEG_HEIGHT_OFFSET + 6] = samplesY; #endif +} - gspca_frame_add(gspca_dev, FIRST_PACKET, frame, - (unsigned char *) quant[qindex], sizeof quant[0]); - gspca_frame_add(gspca_dev, INTER_PACKET, frame, - (unsigned char *) huffman, sizeof huffman); -#ifndef CONEX_CAM - tmpbuf[0] = gspca_dev->height >> 8; - tmpbuf[1] = gspca_dev->height & 0xff; - tmpbuf[2] = gspca_dev->width >> 8; - tmpbuf[3] = gspca_dev->width & 0xff; - tmpbuf[4] = 0x03; /* component number */ - tmpbuf[5] = 0x01; /* first component */ - tmpbuf[6] = samplesY; - gspca_frame_add(gspca_dev, INTER_PACKET, frame, - tmpbuf, 7); - gspca_frame_add(gspca_dev, INTER_PACKET, frame, - eoh, sizeof eoh); -#endif +/* set the JPEG quality */ +static void jpeg_set_qual(u8 *jpeg_hdr, + int quality) +{ + int i, sc; + + if (quality < 50) + sc = 5000 / quality; + else + sc = 200 - quality * 2; + for (i = 0; i < 64; i++) { + jpeg_hdr[JPEG_QT0_OFFSET + i] = + (jpeg_head[JPEG_QT0_OFFSET + i] * sc + 50) / 100; + jpeg_hdr[JPEG_QT1_OFFSET + i] = + (jpeg_head[JPEG_QT1_OFFSET + i] * sc + 50) / 100; + } } #endif |