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v4l2test: Add pingpong buffer to solve blurred screen problem

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Signed-off-by: Kevin.xie <kevin.xie@starfivetech.com>
This commit is contained in:
Kevin.xie
2022-07-22 15:35:17 +08:00
parent 6eb860e00e
commit 520be2db62
1 changed files with 8 additions and 27 deletions
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package/starfive/v4l2_test/v4l2_test.c
+8 -27
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@@ -59,6 +59,7 @@ ConfigParam_t *gp_cfg_param = NULL;
static int g_drm_buf_next_idx = -1;
static int g_drm_buf_curr_idx = 0;
static int drm_buf_id = 0;
static void alloc_default_config(ConfigParam_t **pp_data)
{
@@ -403,12 +404,15 @@ static int frameRead(void)
struct v4l2_buffer buf;
V4l2Param_t *pv4l2_param = &gp_cfg_param->v4l2_param;
uint8_t *dst = NULL;
int next_index;
if (STF_DISP_FB == gp_cfg_param->disp_type) {
dst = gp_cfg_param->fb_param.screen_buf;
} else if (STF_DISP_DRM == gp_cfg_param->disp_type &&
IO_METHOD_DMABUF != gp_cfg_param->io_mthd) {
dst = gp_cfg_param->drm_param.dev_head->bufs[0].buf;
//Get ready to compose the backgound buffer
next_index = (drm_buf_id + 1) % 2;
dst = gp_cfg_param->drm_param.dev_head->bufs[next_index].buf;
} else {
LOG(STF_LEVEL_LOG, "Not display\n");
}
@@ -441,12 +445,11 @@ static int frameRead(void)
LOG(STF_LEVEL_LOG, "buf.index=%d, n_buffers=%d\n",
buf.index, gp_cfg_param->v4l2_param.n_buffers);
imageProcess((uint8_t *)(pv4l2_param->pBuffers[buf.index].start), dst, buf.timestamp);
stf_v4l2_queue_buffer(pv4l2_param, buf.index);
if (STF_DISP_DRM == gp_cfg_param->disp_type) {
g_drm_buf_next_idx = buf.index;
drm_buf_id = next_index; // Move background buffer to foreground
}
stf_v4l2_queue_buffer(pv4l2_param, buf.index);
LOG(STF_LEVEL_LOG, "buf.index: %d, buf.bytesused=%d\n", buf.index, buf.bytesused);
break;
}
case IO_METHOD_USERPTR:
@@ -532,20 +535,8 @@ static void mmap_page_flip_handler(int fd, unsigned int frame,
unsigned int sec, unsigned int usec,
void *data)
{
uint8_t *dst = NULL;
dst = gp_cfg_param->drm_param.dev_head->bufs[0].buf;
if(g_drm_buf_next_idx != -1) {
LOG(STF_LEVEL_TRACE, "Index %d\n", g_drm_buf_curr_idx);
/* TODO: write mmap region here instead of in frameRead*/
g_drm_buf_curr_idx = g_drm_buf_next_idx;
g_drm_buf_next_idx = -1;
}
//LOG(STF_LEVEL_TRACE, "page filp index 0 \n");
drmModePageFlip(gp_cfg_param->drm_param.fd, gp_cfg_param->drm_param.dev_head->crtc_id,
gp_cfg_param->drm_param.dev_head->bufs[0].fb_id,
gp_cfg_param->drm_param.dev_head->bufs[drm_buf_id].fb_id,
DRM_MODE_PAGE_FLIP_EVENT, gp_cfg_param->drm_param.dev_head);
}
@@ -641,17 +632,7 @@ static void mainloop()
}
if (fds[1].revents & POLLIN) {
static struct timespec ts_roll_in;
static struct timespec after_handle;
clock_gettime(CLOCK_MONOTONIC,&ts_roll_in);
drmHandleEvent(gp_cfg_param->drm_param.fd, &ev);
clock_gettime(CLOCK_MONOTONIC,&after_handle);
if(ts_roll_in.tv_sec == after_handle.tv_sec){
unsigned long interval = (ts_roll_in.tv_nsec - after_handle.tv_nsec) / 1000;
//LOG(STF_LEVEL_LOG, "drmHandleEvent cost %u us\n", interval);
}
}
} else if (STF_DISP_DRM == gp_cfg_param->disp_type &&
IO_METHOD_DMABUF == gp_cfg_param->io_mthd) {