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Diffstat (limited to 'drivers/media/platform/vivi.c')
-rw-r--r--drivers/media/platform/vivi.c224
1 files changed, 173 insertions, 51 deletions
diff --git a/drivers/media/platform/vivi.c b/drivers/media/platform/vivi.c
index 0d59b9db83cb..8a33a712f480 100644
--- a/drivers/media/platform/vivi.c
+++ b/drivers/media/platform/vivi.c
@@ -36,9 +36,17 @@
#define VIVI_MODULE_NAME "vivi"
-/* Wake up at about 30 fps */
-#define WAKE_NUMERATOR 30
-#define WAKE_DENOMINATOR 1001
+/* Maximum allowed frame rate
+ *
+ * Vivi will allow setting timeperframe in [1/FPS_MAX - FPS_MAX/1] range.
+ *
+ * Ideally FPS_MAX should be infinity, i.e. practically UINT_MAX, but that
+ * might hit application errors when they manipulate these values.
+ *
+ * Besides, for tpf < 1ms image-generation logic should be changed, to avoid
+ * producing frames with equal content.
+ */
+#define FPS_MAX 1000
#define MAX_WIDTH 1920
#define MAX_HEIGHT 1200
@@ -69,6 +77,12 @@ MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
/* Global font descriptor */
static const u8 *font8x16;
+/* timeperframe: min/max and default */
+static const struct v4l2_fract
+ tpf_min = {.numerator = 1, .denominator = FPS_MAX},
+ tpf_max = {.numerator = FPS_MAX, .denominator = 1},
+ tpf_default = {.numerator = 1001, .denominator = 30000}; /* NTSC */
+
#define dprintk(dev, level, fmt, arg...) \
v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ## arg)
@@ -77,13 +91,13 @@ static const u8 *font8x16;
------------------------------------------------------------------*/
struct vivi_fmt {
- char *name;
+ const char *name;
u32 fourcc; /* v4l2 format id */
u8 depth;
bool is_yuv;
};
-static struct vivi_fmt formats[] = {
+static const struct vivi_fmt formats[] = {
{
.name = "4:2:2, packed, YUYV",
.fourcc = V4L2_PIX_FMT_YUYV,
@@ -150,14 +164,14 @@ static struct vivi_fmt formats[] = {
},
};
-static struct vivi_fmt *get_format(struct v4l2_format *f)
+static const struct vivi_fmt *__get_format(u32 pixelformat)
{
- struct vivi_fmt *fmt;
+ const struct vivi_fmt *fmt;
unsigned int k;
for (k = 0; k < ARRAY_SIZE(formats); k++) {
fmt = &formats[k];
- if (fmt->fourcc == f->fmt.pix.pixelformat)
+ if (fmt->fourcc == pixelformat)
break;
}
@@ -167,12 +181,17 @@ static struct vivi_fmt *get_format(struct v4l2_format *f)
return &formats[k];
}
+static const struct vivi_fmt *get_format(struct v4l2_format *f)
+{
+ return __get_format(f->fmt.pix.pixelformat);
+}
+
/* buffer for one video frame */
struct vivi_buffer {
/* common v4l buffer stuff -- must be first */
struct vb2_buffer vb;
struct list_head list;
- struct vivi_fmt *fmt;
+ const struct vivi_fmt *fmt;
};
struct vivi_dmaqueue {
@@ -231,15 +250,17 @@ struct vivi_dev {
int input;
/* video capture */
- struct vivi_fmt *fmt;
+ const struct vivi_fmt *fmt;
+ struct v4l2_fract timeperframe;
unsigned int width, height;
struct vb2_queue vb_vidq;
unsigned int field_count;
u8 bars[9][3];
- u8 line[MAX_WIDTH * 8];
+ u8 line[MAX_WIDTH * 8] __attribute__((__aligned__(4)));
unsigned int pixelsize;
u8 alpha_component;
+ u32 textfg, textbg;
};
/* ------------------------------------------------------------------
@@ -276,7 +297,7 @@ struct bar_std {
/* Maximum number of bars are 10 - otherwise, the input print code
should be modified */
-static struct bar_std bars[] = {
+static const struct bar_std bars[] = {
{ /* Standard ITU-R color bar sequence */
{ COLOR_WHITE, COLOR_AMBER, COLOR_CYAN, COLOR_GREEN,
COLOR_MAGENTA, COLOR_RED, COLOR_BLUE, COLOR_BLACK, COLOR_BLACK }
@@ -511,66 +532,100 @@ static void gen_twopix(struct vivi_dev *dev, u8 *buf, int colorpos, bool odd)
static void precalculate_line(struct vivi_dev *dev)
{
- int w;
-
- for (w = 0; w < dev->width * 2; w++) {
- int colorpos = w / (dev->width / 8) % 8;
-
- gen_twopix(dev, dev->line + w * dev->pixelsize, colorpos, w & 1);
+ unsigned pixsize = dev->pixelsize;
+ unsigned pixsize2 = 2*pixsize;
+ int colorpos;
+ u8 *pos;
+
+ for (colorpos = 0; colorpos < 16; ++colorpos) {
+ u8 pix[8];
+ int wstart = colorpos * dev->width / 8;
+ int wend = (colorpos+1) * dev->width / 8;
+ int w;
+
+ gen_twopix(dev, &pix[0], colorpos % 8, 0);
+ gen_twopix(dev, &pix[pixsize], colorpos % 8, 1);
+
+ for (w = wstart/2*2, pos = dev->line + w*pixsize; w < wend; w += 2, pos += pixsize2)
+ memcpy(pos, pix, pixsize2);
}
}
+/* need this to do rgb24 rendering */
+typedef struct { u16 __; u8 _; } __attribute__((packed)) x24;
+
static void gen_text(struct vivi_dev *dev, char *basep,
int y, int x, char *text)
{
int line;
+ unsigned int width = dev->width;
/* Checks if it is possible to show string */
- if (y + 16 >= dev->height || x + strlen(text) * 8 >= dev->width)
+ if (y + 16 >= dev->height || x + strlen(text) * 8 >= width)
return;
/* Print stream time */
- for (line = y; line < y + 16; line++) {
- int j = 0;
- char *pos = basep + line * dev->width * dev->pixelsize + x * dev->pixelsize;
- char *s;
-
- for (s = text; *s; s++) {
- u8 chr = font8x16[*s * 16 + line - y];
- int i;
-
- for (i = 0; i < 7; i++, j++) {
- /* Draw white font on black background */
- if (chr & (1 << (7 - i)))
- gen_twopix(dev, pos + j * dev->pixelsize, WHITE, (x+y) & 1);
- else
- gen_twopix(dev, pos + j * dev->pixelsize, TEXT_BLACK, (x+y) & 1);
- }
- }
+#define PRINTSTR(PIXTYPE) do { \
+ PIXTYPE fg; \
+ PIXTYPE bg; \
+ memcpy(&fg, &dev->textfg, sizeof(PIXTYPE)); \
+ memcpy(&bg, &dev->textbg, sizeof(PIXTYPE)); \
+ \
+ for (line = 0; line < 16; line++) { \
+ PIXTYPE *pos = (PIXTYPE *)( basep + ((y + line) * width + x) * sizeof(PIXTYPE) ); \
+ u8 *s; \
+ \
+ for (s = text; *s; s++) { \
+ u8 chr = font8x16[*s * 16 + line]; \
+ \
+ pos[0] = (chr & (0x01 << 7) ? fg : bg); \
+ pos[1] = (chr & (0x01 << 6) ? fg : bg); \
+ pos[2] = (chr & (0x01 << 5) ? fg : bg); \
+ pos[3] = (chr & (0x01 << 4) ? fg : bg); \
+ pos[4] = (chr & (0x01 << 3) ? fg : bg); \
+ pos[5] = (chr & (0x01 << 2) ? fg : bg); \
+ pos[6] = (chr & (0x01 << 1) ? fg : bg); \
+ pos[7] = (chr & (0x01 << 0) ? fg : bg); \
+ \
+ pos += 8; \
+ } \
+ } \
+} while (0)
+
+ switch (dev->pixelsize) {
+ case 2:
+ PRINTSTR(u16); break;
+ case 4:
+ PRINTSTR(u32); break;
+ case 3:
+ PRINTSTR(x24); break;
}
}
static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf)
{
- int wmax = dev->width;
+ int stride = dev->width * dev->pixelsize;
int hmax = dev->height;
- struct timeval ts;
void *vbuf = vb2_plane_vaddr(&buf->vb, 0);
unsigned ms;
char str[100];
int h, line = 1;
+ u8 *linestart;
s32 gain;
if (!vbuf)
return;
+ linestart = dev->line + (dev->mv_count % dev->width) * dev->pixelsize;
+
for (h = 0; h < hmax; h++)
- memcpy(vbuf + h * wmax * dev->pixelsize,
- dev->line + (dev->mv_count % wmax) * dev->pixelsize,
- wmax * dev->pixelsize);
+ memcpy(vbuf + h * stride, linestart, stride);
/* Updates stream time */
+ gen_twopix(dev, (u8 *)&dev->textbg, TEXT_BLACK, /*odd=*/ 0);
+ gen_twopix(dev, (u8 *)&dev->textfg, WHITE, /*odd=*/ 0);
+
dev->ms += jiffies_to_msecs(jiffies - dev->jiffies);
dev->jiffies = jiffies;
ms = dev->ms;
@@ -622,8 +677,7 @@ static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf)
buf->vb.v4l2_buf.field = V4L2_FIELD_INTERLACED;
dev->field_count++;
buf->vb.v4l2_buf.sequence = dev->field_count >> 1;
- do_gettimeofday(&ts);
- buf->vb.v4l2_buf.timestamp = ts;
+ v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
}
static void vivi_thread_tick(struct vivi_dev *dev)
@@ -645,7 +699,7 @@ static void vivi_thread_tick(struct vivi_dev *dev)
list_del(&buf->list);
spin_unlock_irqrestore(&dev->slock, flags);
- do_gettimeofday(&buf->vb.v4l2_buf.timestamp);
+ v4l2_get_timestamp(&buf->vb.v4l2_buf.timestamp);
/* Fill buffer */
vivi_fillbuff(dev, buf);
@@ -655,8 +709,8 @@ static void vivi_thread_tick(struct vivi_dev *dev)
dprintk(dev, 2, "[%p/%d] done\n", buf, buf->vb.v4l2_buf.index);
}
-#define frames_to_ms(frames) \
- ((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR)
+#define frames_to_ms(dev, frames) \
+ ((frames * dev->timeperframe.numerator * 1000) / dev->timeperframe.denominator)
static void vivi_sleep(struct vivi_dev *dev)
{
@@ -672,7 +726,7 @@ static void vivi_sleep(struct vivi_dev *dev)
goto stop_task;
/* Calculate time to wake up */
- timeout = msecs_to_jiffies(frames_to_ms(1));
+ timeout = msecs_to_jiffies(frames_to_ms(dev, 1));
vivi_thread_tick(dev);
@@ -872,7 +926,7 @@ static void vivi_unlock(struct vb2_queue *vq)
}
-static struct vb2_ops vivi_video_qops = {
+static const struct vb2_ops vivi_video_qops = {
.queue_setup = queue_setup,
.buf_prepare = buffer_prepare,
.buf_queue = buffer_queue,
@@ -903,7 +957,7 @@ static int vidioc_querycap(struct file *file, void *priv,
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
- struct vivi_fmt *fmt;
+ const struct vivi_fmt *fmt;
if (f->index >= ARRAY_SIZE(formats))
return -EINVAL;
@@ -939,7 +993,7 @@ static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vivi_dev *dev = video_drvdata(file);
- struct vivi_fmt *fmt;
+ const struct vivi_fmt *fmt;
fmt = get_format(f);
if (!fmt) {
@@ -1044,6 +1098,70 @@ static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
return 0;
}
+/* timeperframe is arbitrary and continous */
+static int vidioc_enum_frameintervals(struct file *file, void *priv,
+ struct v4l2_frmivalenum *fival)
+{
+ const struct vivi_fmt *fmt;
+
+ if (fival->index)
+ return -EINVAL;
+
+ fmt = __get_format(fival->pixel_format);
+ if (!fmt)
+ return -EINVAL;
+
+ /* regarding width & height - we support any */
+
+ fival->type = V4L2_FRMIVAL_TYPE_CONTINUOUS;
+
+ /* fill in stepwise (step=1.0 is requred by V4L2 spec) */
+ fival->stepwise.min = tpf_min;
+ fival->stepwise.max = tpf_max;
+ fival->stepwise.step = (struct v4l2_fract) {1, 1};
+
+ return 0;
+}
+
+static int vidioc_g_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *parm)
+{
+ struct vivi_dev *dev = video_drvdata(file);
+
+ if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ parm->parm.capture.capability = V4L2_CAP_TIMEPERFRAME;
+ parm->parm.capture.timeperframe = dev->timeperframe;
+ parm->parm.capture.readbuffers = 1;
+ return 0;
+}
+
+#define FRACT_CMP(a, OP, b) \
+ ((u64)(a).numerator * (b).denominator OP (u64)(b).numerator * (a).denominator)
+
+static int vidioc_s_parm(struct file *file, void *priv,
+ struct v4l2_streamparm *parm)
+{
+ struct vivi_dev *dev = video_drvdata(file);
+ struct v4l2_fract tpf;
+
+ if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ tpf = parm->parm.capture.timeperframe;
+
+ /* tpf: {*, 0} resets timing; clip to [min, max]*/
+ tpf = tpf.denominator ? tpf : tpf_default;
+ tpf = FRACT_CMP(tpf, <, tpf_min) ? tpf_min : tpf;
+ tpf = FRACT_CMP(tpf, >, tpf_max) ? tpf_max : tpf;
+
+ dev->timeperframe = tpf;
+ parm->parm.capture.timeperframe = tpf;
+ parm->parm.capture.readbuffers = 1;
+ return 0;
+}
+
/* --- controls ---------------------------------------------- */
static int vivi_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
@@ -1202,6 +1320,9 @@ static const struct v4l2_ioctl_ops vivi_ioctl_ops = {
.vidioc_enum_input = vidioc_enum_input,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
+ .vidioc_enum_frameintervals = vidioc_enum_frameintervals,
+ .vidioc_g_parm = vidioc_g_parm,
+ .vidioc_s_parm = vidioc_s_parm,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_log_status = v4l2_ctrl_log_status,
@@ -1209,7 +1330,7 @@ static const struct v4l2_ioctl_ops vivi_ioctl_ops = {
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
-static struct video_device vivi_template = {
+static const struct video_device vivi_template = {
.name = "vivi",
.fops = &vivi_fops,
.ioctl_ops = &vivi_ioctl_ops,
@@ -1260,6 +1381,7 @@ static int __init vivi_create_instance(int inst)
goto free_dev;
dev->fmt = &formats[0];
+ dev->timeperframe = tpf_default;
dev->width = 640;
dev->height = 480;
dev->pixelsize = dev->fmt->depth / 8;
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-21 05:06:07 +0200