__u8 vflip;
__u8 autobrightness;
__u8 freq;
+ __u8 quality;
+#define QUALITY_MIN 50
+#define QUALITY_MAX 70
+#define QUALITY_DEF 50
__u8 stopped; /* Streaming is temporarily paused */
int sensor_width;
int sensor_height;
int sensor_reg_cache[256];
+
+ u8 *jpeg_hdr;
};
/* Note this is a bit of a hack, but the w9968cf driver needs the code for all
* registers while the camera is streaming */
static inline int ov51x_stop(struct sd *sd)
{
- int ret;
-
PDEBUG(D_STREAM, "stopping");
sd->stopped = 1;
switch (sd->bridge) {
case BRIDGE_OVFX2:
return reg_w_mask(sd, 0x0f, 0x00, 0x02);
case BRIDGE_W9968CF:
- ret = reg_w(sd, 0x3c, 0x0a05); /* stop USB transfer */
- ret += reg_w(sd, 0x39, 0x0000); /* disable JPEG encoder */
- ret += reg_w(sd, 0x16, 0x0000); /* stop video capture */
- return ret;
+ return reg_w(sd, 0x3c, 0x0a05); /* stop USB transfer */
}
return 0;
case BRIDGE_W9968CF:
cam->cam_mode = w9968cf_vga_mode;
cam->nmodes = ARRAY_SIZE(w9968cf_vga_mode);
- /* if (sd->sif)
- cam->nmodes--; */
+ if (sd->sif)
+ cam->nmodes--;
/* w9968cf needs initialisation once the sensor is known */
if (w9968cf_init(sd) < 0)
gspca_dev->ctrl_dis = (1 << HFLIP_IDX) | (1 << VFLIP_IDX) |
(1 << OV7670_FREQ_IDX);
}
+ sd->quality = QUALITY_DEF;
if (sd->sensor == SEN_OV7640 || sd->sensor == SEN_OV7670)
gspca_dev->ctrl_dis |= 1 << AUTOBRIGHT_IDX;
/* OV8610 Frequency filter control should work but needs testing */
ov51x_led_control(sd, 0);
}
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ if (sd->bridge == BRIDGE_W9968CF)
+ w9968cf_stop0(sd);
+}
+
static void ov511_pkt_scan(struct gspca_dev *gspca_dev,
struct gspca_frame *frame, /* target */
__u8 *in, /* isoc packet */
return -EINVAL;
}
+static int sd_get_jcomp(struct gspca_dev *gspca_dev,
+ struct v4l2_jpegcompression *jcomp)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ if (sd->bridge != BRIDGE_W9968CF)
+ return -EINVAL;
+
+ memset(jcomp, 0, sizeof *jcomp);
+ jcomp->quality = sd->quality;
+ jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT | V4L2_JPEG_MARKER_DQT |
+ V4L2_JPEG_MARKER_DRI;
+ return 0;
+}
+
+static int sd_set_jcomp(struct gspca_dev *gspca_dev,
+ struct v4l2_jpegcompression *jcomp)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ if (sd->bridge != BRIDGE_W9968CF)
+ return -EINVAL;
+
+ if (gspca_dev->streaming)
+ return -EBUSY;
+
+ if (jcomp->quality < QUALITY_MIN)
+ sd->quality = QUALITY_MIN;
+ else if (jcomp->quality > QUALITY_MAX)
+ sd->quality = QUALITY_MAX;
+ else
+ sd->quality = jcomp->quality;
+
+ /* Return resulting jcomp params to app */
+ sd_get_jcomp(gspca_dev, jcomp);
+
+ return 0;
+}
+
/* sub-driver description */
static const struct sd_desc sd_desc = {
.name = MODULE_NAME,
.init = sd_init,
.start = sd_start,
.stopN = sd_stopN,
+ .stop0 = sd_stop0,
.pkt_scan = sd_pkt_scan,
.querymenu = sd_querymenu,
+ .get_jcomp = sd_get_jcomp,
+ .set_jcomp = sd_set_jcomp,
};
/* -- module initialisation -- */
the sensor drivers to v4l2 sub drivers, and properly split of this
driver from ov519.c */
-#define W9968CF_I2C_BUS_DELAY 4 /* delay in us for I2C bit r/w operations */
+/* The CONEX_CAM define for jpeg.h needs renaming, now its used here too */
+#define CONEX_CAM
+#include "jpeg.h"
-/* FIXME make this runtime configurable */
-/* Comment/uncomment this for high/low quality of compressed video */
-#define W9968CF_DEC_FAST_LOWQUALITY_VIDEO
-
-#ifdef W9968CF_DEC_FAST_LOWQUALITY_VIDEO
-static const unsigned char Y_QUANTABLE[64] = {
- 16, 11, 10, 16, 24, 40, 51, 61,
- 12, 12, 14, 19, 26, 58, 60, 55,
- 14, 13, 16, 24, 40, 57, 69, 56,
- 14, 17, 22, 29, 51, 87, 80, 62,
- 18, 22, 37, 56, 68, 109, 103, 77,
- 24, 35, 55, 64, 81, 104, 113, 92,
- 49, 64, 78, 87, 103, 121, 120, 101,
- 72, 92, 95, 98, 112, 100, 103, 99
-};
+#define W9968CF_I2C_BUS_DELAY 4 /* delay in us for I2C bit r/w operations */
-static const unsigned char UV_QUANTABLE[64] = {
- 17, 18, 24, 47, 99, 99, 99, 99,
- 18, 21, 26, 66, 99, 99, 99, 99,
- 24, 26, 56, 99, 99, 99, 99, 99,
- 47, 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
-};
-#else
-static const unsigned char Y_QUANTABLE[64] = {
- 8, 5, 5, 8, 12, 20, 25, 30,
- 6, 6, 7, 9, 13, 29, 30, 27,
- 7, 6, 8, 12, 20, 28, 34, 28,
- 7, 8, 11, 14, 25, 43, 40, 31,
- 9, 11, 18, 28, 34, 54, 51, 38,
- 12, 17, 27, 32, 40, 52, 56, 46,
- 24, 32, 39, 43, 51, 60, 60, 50,
- 36, 46, 47, 49, 56, 50, 51, 49
-};
-
-static const unsigned char UV_QUANTABLE[64] = {
- 8, 9, 12, 23, 49, 49, 49, 49,
- 9, 10, 13, 33, 49, 49, 49, 49,
- 12, 13, 28, 49, 49, 49, 49, 49,
- 23, 33, 49, 49, 49, 49, 49, 49,
- 49, 49, 49, 49, 49, 49, 49, 49,
- 49, 49, 49, 49, 49, 49, 49, 49,
- 49, 49, 49, 49, 49, 49, 49, 49,
- 49, 49, 49, 49, 49, 49, 49, 49
-};
-#endif
+#define Y_QUANTABLE (sd->jpeg_hdr + JPEG_QT0_OFFSET)
+#define UV_QUANTABLE (sd->jpeg_hdr + JPEG_QT1_OFFSET)
static const struct v4l2_pix_format w9968cf_vga_mode[] = {
{160, 120, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE,
.bytesperline = 176 * 2,
.sizeimage = 176 * 144 * 2,
.colorspace = V4L2_COLORSPACE_JPEG},
- {320, 240, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE,
+ {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
.bytesperline = 320 * 2,
.sizeimage = 320 * 240 * 2,
.colorspace = V4L2_COLORSPACE_JPEG},
- {352, 288, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE,
+ {352, 288, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
.bytesperline = 352 * 2,
.sizeimage = 352 * 288 * 2,
.colorspace = V4L2_COLORSPACE_JPEG},
-/* {640, 480, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE,
+ {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE,
.bytesperline = 640 * 2,
.sizeimage = 640 * 480 * 2,
- .colorspace = V4L2_COLORSPACE_JPEG}, */
+ .colorspace = V4L2_COLORSPACE_JPEG},
};
static int reg_w(struct sd *sd, __u16 index, __u16 value);
ret += reg_w(sd, 0x31, sd->gspca_dev.height);
/* Y & UV frame buffer strides (in WORD) */
+ if (w9968cf_vga_mode[sd->gspca_dev.curr_mode].pixelformat ==
+ V4L2_PIX_FMT_JPEG) {
+ ret += reg_w(sd, 0x2c, sd->gspca_dev.width/2);
+ ret += reg_w(sd, 0x2d, sd->gspca_dev.width/4);
+ } else
ret += reg_w(sd, 0x2c, sd->gspca_dev.width);
ret += reg_w(sd, 0x00, 0xbf17); /* reset everything */
ret += reg_w(sd, 0x00, 0xbf10); /* normal operation */
- /* Transfer size */
- /* FIXME JPEG * 4 ?? */
+ /* Transfer size in WORDS (for UYVY format only) */
val = sd->gspca_dev.width * sd->gspca_dev.height;
ret += reg_w(sd, 0x3d, val & 0xffff); /* low bits */
ret += reg_w(sd, 0x3e, val >> 16); /* high bits */
+ if (w9968cf_vga_mode[sd->gspca_dev.curr_mode].pixelformat ==
+ V4L2_PIX_FMT_JPEG) {
+ /* We may get called multiple times (usb isoc bw negotiat.) */
+ if (!sd->jpeg_hdr)
+ sd->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL);
+ if (!sd->jpeg_hdr)
+ return -ENOMEM;
+
+ jpeg_define(sd->jpeg_hdr, sd->gspca_dev.height,
+ sd->gspca_dev.width, 0x22); /* JPEG 420 */
+ jpeg_set_qual(sd->jpeg_hdr, sd->quality);
+ ret += w9968cf_upload_quantizationtables(sd);
+ }
+
/* Video Capture Control Register */
if (sd->sensor == SEN_OV7620) {
/* Seems to work around a bug in the image sensor */
val = (vs_polarity << 12) | (hs_polarity << 11);
+ /* NOTE: We may not have enough memory to do double buffering while
+ doing compression (amount of memory differs per model cam).
+ So we use the second image buffer also as jpeg stream buffer
+ (see w9968cf_init), and disable double buffering. */
+ if (w9968cf_vga_mode[sd->gspca_dev.curr_mode].pixelformat ==
+ V4L2_PIX_FMT_JPEG) {
+ /* val |= 0x0002; YUV422P */
+ val |= 0x0003; /* YUV420P */
+ } else
val |= 0x0080; /* Enable HW double buffering */
/* val |= 0x0020; enable clamping */
return ret;
}
+static void w9968cf_stop0(struct sd *sd)
+{
+ if (sd->gspca_dev.present) {
+ reg_w(sd, 0x39, 0x0000); /* disable JPEG encoder */
+ reg_w(sd, 0x16, 0x0000); /* stop video capture */
+ }
+
+ kfree(sd->jpeg_hdr);
+ sd->jpeg_hdr = NULL;
+}
+
+/* The w9968cf docs say that a 0 sized packet means EOF (and also SOF
+ for the next frame). This seems to simply not be true when operating
+ in JPEG mode, in this case there may be empty packets within the
+ frame. So in JPEG mode use the JPEG SOI marker to detect SOF.
+
+ Note to make things even more interesting the w9968cf sends *PLANAR* jpeg,
+ to be precise it sends: SOI, SOF, DRI, SOS, Y-data, SOS, U-data, SOS,
+ V-data, EOI. */
static void w9968cf_pkt_scan(struct gspca_dev *gspca_dev,
struct gspca_frame *frame, /* target */
__u8 *data, /* isoc packet */
int len) /* iso packet length */
{
- /* An empty packet signals EOF */
- if (gspca_dev->empty_packet) {
- frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ if (w9968cf_vga_mode[gspca_dev->curr_mode].pixelformat ==
+ V4L2_PIX_FMT_JPEG) {
+ if (len >= 2 &&
+ data[0] == 0xff &&
+ data[1] == 0xd8) {
+ frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
NULL, 0);
- gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
- NULL, 0);
- gspca_dev->empty_packet = 0;
+ gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
+ sd->jpeg_hdr, JPEG_HDR_SZ);
+ /* Strip the ff d8, our own header (which adds
+ huffman and quantization tables) already has this */
+ len -= 2;
+ data += 2;
+ }
+ } else {
+ /* In UYVY mode an empty packet signals EOF */
+ if (gspca_dev->empty_packet) {
+ frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,
+ NULL, 0);
+ gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
+ NULL, 0);
+ gspca_dev->empty_packet = 0;
+ }
}
gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
}
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff