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Diffstat (limited to 'drivers/media/video/gspca/jpeg.h')
-rw-r--r--drivers/media/video/gspca/jpeg.h263
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
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-28 11:36:27 +0300