int VpuDec::set_DecOpenParam()
{
int ret = -1;
memset(&handle,0,sizeof(DecHandle));
DecOpenParam oparam;// = {0};
memset(&oparam, 0, sizeof(DecOpenParam)); //must to clean to 0
allocHwBuffer(Dec_RingBuf_Size);
oparam.bitstreamFormat = (CodStd)dec_format;
oparam.bitstreamBuffer = Dec_bufZone.pStartAddr;
oparam.bitstreamBufferSize = Dec_bufZone.bufSize;
oparam.pBitStream = (Uint8 *)Dec_bufZone.vStartaddr;
oparam.reorderEnable = 1;
oparam.mp4DeblkEnable = 0;
oparam.chromaInterleave = 0;
oparam.mp4Class = 0;
if (cpu_is_mx6x())
oparam.avcExtension = 0;
oparam.mjpg_thumbNailDecEnable = 0;
oparam.mapType = 0;
oparam.tiled2LinearEnable = 0;
oparam.bitstreamMode = 1;
oparam.jpgLineBufferMode = 1;
if (dec_format == STD_AVC) {
ps_mem_desc.size = PS_SAVE_SIZE;
ret = IOGetPhyMem(&ps_mem_desc);
if (ret){
printf("Unable to obtain physical ps save mem,LINE%d\n",__LINE__);
return -1;
}
oparam.psSaveBuffer = ps_mem_desc.phy_addr;
oparam.psSaveBufferSize = PS_SAVE_SIZE;
}
//printf("bitstreamFormat %x, bitstreamBuffer %x,bitstreamBufferSize %d, pBitStream %x\n",oparam.bitstreamFormat,
//oparam.bitstreamBuffer,oparam.bitstreamBufferSize,oparam.pBitStream);
ret = vpu_DecOpen(&handle, &oparam);
if (ret != RETCODE_SUCCESS) {
printf("vpu_DecOpen failed, ret:%d\n", ret);
return -1;
}
return 0;
}
int
parse_args(int argc, char *argv[], int i)
{
int status = 0, opt, val;
input_arg[i].cmd.chromaInterleave = 1;
if (cpu_is_mx6x())
input_arg[i].cmd.bs_mode = 1;
do {
opt = getopt(argc, argv, options);
switch (opt)
{
case 'i':
strncpy(input_arg[i].cmd.input, optarg, MAX_PATH);
input_arg[i].cmd.src_scheme = PATH_FILE;
break;
case 'o':
if (input_arg[i].cmd.dst_scheme == PATH_NET) {
warn_msg("-o ignored because of -n\n");
break;
}
strncpy(input_arg[i].cmd.output, optarg, MAX_PATH);
input_arg[i].cmd.dst_scheme = PATH_FILE;
break;
case 'x':
val = atoi(optarg);
if ((input_arg[i].mode == ENCODE) || (input_arg[i].mode == LOOPBACK))
input_arg[i].cmd.video_node_capture = val;
else {
if (val == 1) {
input_arg[i].cmd.dst_scheme = PATH_IPU;
info_msg("Display through IPU LIB\n");
if (cpu_is_mx6x())
warn_msg("IPU lib is OBSOLETE, please try other renderer\n");
#ifdef BUILD_FOR_ANDROID
} else if (val == 2) {
input_arg[i].cmd.dst_scheme = PATH_G2D;
info_msg("Display through G2D\n");
#endif
} else {
input_arg[i].cmd.dst_scheme = PATH_V4L2;
info_msg("Display through V4L2\n");
input_arg[i].cmd.video_node = val;
}
if (cpu_is_mx27() &&
(input_arg[i].cmd.dst_scheme == PATH_IPU)) {
input_arg[i].cmd.dst_scheme = PATH_V4L2;
warn_msg("ipu lib disp only support in ipuv3\n");
}
}
break;
case 'n':
if (input_arg[i].mode == ENCODE) {
/* contains the ip address */
strncpy(input_arg[i].cmd.output, optarg, 64);
input_arg[i].cmd.dst_scheme = PATH_NET;
} else {
warn_msg("-n option used only for encode\n");
}
break;
case 'p':
input_arg[i].cmd.port = atoi(optarg);
break;
case 'r':
input_arg[i].cmd.rot_angle = atoi(optarg);
if (input_arg[i].cmd.rot_angle)
input_arg[i].cmd.rot_en = 1;
break;
case 'u':
input_arg[i].cmd.ext_rot_en = atoi(optarg);
/* ipu/gpu rotation will override vpu rotation */
if (input_arg[i].cmd.ext_rot_en)
input_arg[i].cmd.rot_en = 0;
break;
case 'f':
input_arg[i].cmd.format = atoi(optarg);
break;
case 'c':
input_arg[i].cmd.count = atoi(optarg);
break;
case 'v':
input_arg[i].cmd.vdi_motion = optarg[0];
break;
case 'w':
input_arg[i].cmd.width = atoi(optarg);
break;
case 'h':
input_arg[i].cmd.height = atoi(optarg);
break;
case 'j':
input_arg[i].cmd.loff = atoi(optarg);
break;
case 'k':
input_arg[i].cmd.toff = atoi(optarg);
break;
case 'g':
input_arg[i].cmd.gop = atoi(optarg);
break;
case 's':
if (cpu_is_mx6x())
input_arg[i].cmd.bs_mode = atoi(optarg);
else
input_arg[i].cmd.prescan = atoi(optarg);
break;
case 'b':
input_arg[i].cmd.bitrate = atoi(optarg);
break;
case 'd':
input_arg[i].cmd.deblock_en = atoi(optarg);
break;
case 'e':
input_arg[i].cmd.dering_en = atoi(optarg);
break;
case 'm':
input_arg[i].cmd.mirror = atoi(optarg);
if (input_arg[i].cmd.mirror)
input_arg[i].cmd.rot_en = 1;
break;
case 't':
input_arg[i].cmd.chromaInterleave = atoi(optarg);
break;
case 'l':
input_arg[i].cmd.mp4_h264Class = atoi(optarg);
break;
case 'a':
input_arg[i].cmd.fps = atoi(optarg);
break;
case 'y':
input_arg[i].cmd.mapType = atoi(optarg);
break;
case 'q':
input_arg[i].cmd.quantParam = atoi(optarg);
break;
case -1:
break;
default:
status = -1;
break;
}
} while ((opt != -1) && (status == 0));
optind = 1;
return status;
}
int VpuDec::decode(VencBlk * src, ImgBlk * dest)//blocking
{
int ret = 1;
int loop_id = 0;
int imageSize;
DecOutputInfo outinfo = {0};
DecParam decparam = {0};
if(dec_fb == NULL || dec_pfbpool == NULL){
if (write_Src_Ringbuf(src) == -1 || get_DecInitialInfo(src) == -1 || calloc_FrameBuff(src) == -1){
printf("Config VPU error:VencBlk codec 0x%x, %dx%d, frameSize %d, frameType %d\n",src->codec,src->width,src->height,src->frameSize,src->frameType);
return -1;
}
decparam.dispReorderBuf = 0;
decparam.skipframeMode = 0;
decparam.skipframeNum = 0;
decparam.iframeSearchEnable = 0;
if(dec_format == STD_MJPG)
vpu_DecGiveCommand(handle, SET_ROTATOR_STRIDE, &src->width);
}else{
ret = write_Src_Ringbuf(src);
if (ret < 0) {
printf("read data failed\n");
return -1;
}
}
if(dec_format == STD_MJPG){
decparam.chunkSize = src->frameSize;
decparam.phyJpgChunkBase = Dec_bufZone.pStartAddr;
decparam.virtJpgChunkBase = (unsigned char*)Dec_bufZone.vStartaddr;
vpu_DecGiveCommand(handle, SET_ROTATOR_OUTPUT,(void *)&dec_fb[0]);
}
imageSize = src->width * src->height * 3 / 2;
ret = vpu_DecStartOneFrame(handle, &decparam);
if (ret != RETCODE_SUCCESS) {
printf("DecStartOneFrame failed, ret=%d,LINE:%d\n", ret,__LINE__);
return -1;
}
loop_id = 0;
while (vpu_IsBusy()) {
if (loop_id == 50) {
ret = vpu_SWReset(handle, 0);
return -1;
}
vpu_WaitForInt(100);
loop_id ++;
}
ret = vpu_DecGetOutputInfo(handle, &outinfo);
if (ret != RETCODE_SUCCESS) {
printf("vpu_DecGetOutputInfo failed Err code is %d\n"
"\tframe_id = %d\n", ret, (int)frame_id);
return -1;
}
if (cpu_is_mx6x() && (outinfo.decodingSuccess & 0x10)) {
printf("vpu needs more bitstream in rollback mode\n"
"\tframe_id = %d\n", (int)frame_id);
return -1;
}
if (outinfo.notSufficientPsBuffer) {
printf("PS Buffer overflow,LINE:%d\n",__LINE__);
return -1;
}
if (outinfo.notSufficientSliceBuffer) {
printf("Slice Buffer overflow,LINE:%d\n",__LINE__);
return -1;
}
if (outinfo.indexFrameDisplay == -1){
printf("VPU has no more display data,LINE:%d\n",__LINE__);
return -1;
}
if ((outinfo.indexFrameDisplay == -3) ||(outinfo.indexFrameDisplay == -2)) {
printf("VPU doesn't have picture to be displayed.\n"
"\toutinfo.indexFrameDisplay = %d\n",
outinfo.indexFrameDisplay);
if (disp_clr_index >= 0) {
ret = vpu_DecClrDispFlag(handle, disp_clr_index);
if (ret)
printf("vpu_DecClrDispFlag failed Error code"
" %d\n", ret);
}
disp_clr_index = outinfo.indexFrameDisplay;
}
dis_index = outinfo.indexFrameDisplay;
dest->vaddr = (void *)(dec_pfbpool[dis_index]->addrY + (dec_pfbpool[dis_index]->desc.virt_uaddr- dec_pfbpool[dis_index]->desc.phy_addr));
dest->paddr = dec_pfbpool[dis_index]->desc.phy_addr; //physical address
dest->size = imageSize;
dest->height = src->height;
dest->width = src->width;
dest->fourcc = PIX_FMT_YUV420P;//src->codec;
dest->pts = src->pts;
//printf("dis_index:%d,frame_id:%d,disp_clr_index:%d\n",dis_index,frame_id,disp_clr_index);
if(dec_format == STD_AVC){
if (disp_clr_index >= 0) {
ret = vpu_DecClrDispFlag(handle,disp_clr_index);
if (ret)
printf("vpu_DecClrDispFlag failed Error code%d,LINE:%d\n", ret,__LINE__);
}
}
disp_clr_index = outinfo.indexFrameDisplay;
frame_id++;
return 1;
}
struct vpu_display *
v4l_display_open(struct decode *dec, int nframes, struct rot rotation, Rect cropRect)
{
int width = dec->picwidth;
int height = dec->picheight;
int left = cropRect.left;
int top = cropRect.top;
int right = cropRect.right;
int bottom = cropRect.bottom;
int disp_width = dec->cmdl->width;
int disp_height = dec->cmdl->height;
int disp_left = dec->cmdl->loff;
int disp_top = dec->cmdl->toff;
int fd = -1, err = 0, out = 0, i = 0;
char v4l_device[80], node[8];
struct v4l2_cropcap cropcap = {0};
struct v4l2_crop crop = {0};
struct v4l2_framebuffer fb = {0};
struct v4l2_format fmt = {0};
struct v4l2_requestbuffers reqbuf = {0};
struct v4l2_mxc_offset off = {0};
struct v4l2_rect icrop = {0};
struct vpu_display *disp;
int fd_fb;
char *tv_mode, *test_mode;
char motion_mode = dec->cmdl->vdi_motion;
struct mxcfb_gbl_alpha alpha;
int ratio = 1;
if (cpu_is_mx27()) {
out = 0;
} else {
out = 3;
#ifdef BUILD_FOR_ANDROID
fd_fb = open("/dev/graphics/fb0", O_RDWR, 0);
#else
fd_fb = open("/dev/fb0", O_RDWR, 0);
#endif
if (fd_fb < 0) {
err_msg("unable to open fb0\n");
return NULL;
}
alpha.alpha = 0;
alpha.enable = 1;
if (ioctl(fd_fb, MXCFB_SET_GBL_ALPHA, &alpha) < 0) {
err_msg("set alpha blending failed\n");
return NULL;
}
close(fd_fb);
}
dprintf(3, "rot_en:%d; rot_angle:%d; ipu_rot_en:%d\n", rotation.rot_en,
rotation.rot_angle, rotation.ipu_rot_en);
tv_mode = getenv("VPU_TV_MODE");
if (tv_mode) {
err = system("/bin/echo 1 > /sys/class/graphics/fb1/blank");
if (!strcmp(tv_mode, "NTSC")) {
err = system("/bin/echo U:720x480i-60 > /sys/class/graphics/fb1/mode");
out = 5;
} else if (!strcmp(tv_mode, "PAL")) {
err = system("/bin/echo U:720x576i-50 > /sys/class/graphics/fb1/mode");
out = 5;
} else if (!strcmp(tv_mode, "720P")) {
err = system("/bin/echo U:1280x720p-60 > /sys/class/graphics/fb1/mode");
out = 5;
} else {
out = 3;
warn_msg("VPU_TV_MODE should be set to NTSC, PAL, or 720P.\n"
"\tDefault display is LCD if not set this environment "
"or set wrong string.\n");
}
err = system("/bin/echo 0 > /sys/class/graphics/fb1/blank");
if (err == -1) {
warn_msg("set tv mode error\n");
}
/* make sure tvout init done */
sleep(2);
}
if (rotation.rot_en) {
if (rotation.rot_angle == 90 || rotation.rot_angle == 270) {
i = width;
width = height;
height = i;
}
dprintf(3, "VPU rot: width = %d; height = %d\n", width, height);
}
disp = (struct vpu_display *)calloc(1, sizeof(struct vpu_display));
if (disp == NULL) {
err_msg("falied to allocate vpu_display\n");
return NULL;
}
if (!dec->cmdl->video_node) {
if (cpu_is_mx6x())
dec->cmdl->video_node = 17; /* fg for mx6x */
else
dec->cmdl->video_node = 16;
}
sprintf(node, "%d", dec->cmdl->video_node);
strcpy(v4l_device, "/dev/video");
strcat(v4l_device, node);
fd = open(v4l_device, O_RDWR, 0);
if (fd < 0) {
err_msg("unable to open %s\n", v4l_device);
goto err;
}
info_msg("v4l output to %s\n", v4l_device);
if (!cpu_is_mx6x()) {
err = ioctl(fd, VIDIOC_S_OUTPUT, &out);
if (err < 0) {
err_msg("VIDIOC_S_OUTPUT failed\n");
goto err;
}
}
cropcap.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
err = ioctl(fd, VIDIOC_CROPCAP, &cropcap);
if (err < 0) {
err_msg("VIDIOC_CROPCAP failed\n");
goto err;
}
dprintf(1, "cropcap.bounds.width = %d\n\tcropcap.bound.height = %d\n\t" \
"cropcap.defrect.width = %d\n\tcropcap.defrect.height = %d\n",
cropcap.bounds.width, cropcap.bounds.height,
cropcap.defrect.width, cropcap.defrect.height);
if (rotation.ipu_rot_en == 0) {
ratio = calculate_ratio(width, height, cropcap.bounds.width,
cropcap.bounds.height);
dprintf(3, "VPU rot: ratio = %d\n", ratio);
}
crop.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
crop.c.top = disp_top;
crop.c.left = disp_left;
crop.c.width = width / ratio;
crop.c.height = height / ratio;
if ((disp_width != 0) && (disp_height!= 0 )) {
crop.c.width = disp_width;
crop.c.height = disp_height;
} else if (!cpu_is_mx27()) {
crop.c.width = cropcap.bounds.width;
crop.c.height = cropcap.bounds.height;
}
info_msg("Display to %d %d, top offset %d, left offset %d\n",
crop.c.width, crop.c.height, disp_top, disp_left);
dprintf(1, "crop.c.width/height: %d/%d\n", crop.c.width, crop.c.height);
err = ioctl(fd, VIDIOC_S_CROP, &crop);
if (err < 0) {
err_msg("VIDIOC_S_CROP failed\n");
goto err;
}
/* Set VDI motion algorithm. */
if (motion_mode) {
struct v4l2_control ctrl;
ctrl.id = V4L2_CID_MXC_MOTION;
if (motion_mode == 'h') {
ctrl.value = HIGH_MOTION;
} else if (motion_mode == 'l') {
ctrl.value = LOW_MOTION;
} else if (motion_mode == 'm') {
ctrl.value = MED_MOTION;
} else {
ctrl.value = MED_MOTION;
info_msg("%c unknown motion mode, medium, the default is used\n",motion_mode);
}
err = ioctl(fd, VIDIOC_S_CTRL, &ctrl);
if (err < 0) {
err_msg("VIDIOC_S_CTRL failed\n");
goto err;
}
}
if (cpu_is_mx6x()) {
/* Set rotation via new V4L2 interface on 2.6.38 kernel */
struct v4l2_control ctrl;
ctrl.id = V4L2_CID_ROTATE;
if (rotation.ipu_rot_en)
ctrl.value = rotation.rot_angle;
else
ctrl.value = 0;
err = ioctl(fd, VIDIOC_S_CTRL, &ctrl);
if (err < 0) {
err_msg("VIDIOC_S_CTRL failed\n");
goto err;
}
} else if (rotation.ipu_rot_en && (rotation.rot_angle != 0)) {
/* Set rotation via V4L2 i/f */
struct v4l2_control ctrl;
ctrl.id = V4L2_CID_PRIVATE_BASE;
if (rotation.rot_angle == 90)
ctrl.value = V4L2_MXC_ROTATE_90_RIGHT;
else if (rotation.rot_angle == 180)
ctrl.value = V4L2_MXC_ROTATE_180;
else if (rotation.rot_angle == 270)
ctrl.value = V4L2_MXC_ROTATE_90_LEFT;
err = ioctl(fd, VIDIOC_S_CTRL, &ctrl);
if (err < 0) {
err_msg("VIDIOC_S_CTRL failed\n");
goto err;
}
} else {
struct v4l2_control ctrl;
ctrl.id = V4L2_CID_PRIVATE_BASE;
ctrl.value = 0;
err = ioctl(fd, VIDIOC_S_CTRL, &ctrl);
if (err < 0) {
err_msg("VIDIOC_S_CTRL failed\n");
goto err;
}
}
if (cpu_is_mx27()) {
fb.capability = V4L2_FBUF_CAP_EXTERNOVERLAY;
fb.flags = V4L2_FBUF_FLAG_PRIMARY;
err = ioctl(fd, VIDIOC_S_FBUF, &fb);
if (err < 0) {
err_msg("VIDIOC_S_FBUF failed\n");
goto err;
}
}
fmt.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
/*
* Just consider one case:
* (top,left) = (0,0)
*/
if (top || left) {
err_msg("This case is not covered in this demo for simplicity:\n"
"croping rectangle (top, left) != (0, 0); "
"top/left = %d/%d\n", top, left);
goto err;
} else if (right || bottom) {
if (cpu_is_mx6x()) {
/* This is aligned with new V4L interface on 2.6.38 kernel */
fmt.fmt.pix.width = width;
fmt.fmt.pix.height = height;
icrop.left = left;
icrop.top = top;
icrop.width = right - left;
icrop.height = bottom - top;
fmt.fmt.pix.priv = (unsigned long)&icrop;
} else {
fmt.fmt.pix.width = right - left;
fmt.fmt.pix.height = bottom - top;
fmt.fmt.pix.bytesperline = width;
off.u_offset = width * height;
off.v_offset = off.u_offset + width * height / 4;
fmt.fmt.pix.priv = (unsigned long) &off;
fmt.fmt.pix.sizeimage = width * height * 3 / 2;
}
} else {
fmt.fmt.pix.width = width;
fmt.fmt.pix.height = height;
fmt.fmt.pix.bytesperline = width;
}
dprintf(1, "fmt.fmt.pix.width = %d\n\tfmt.fmt.pix.height = %d\n",
fmt.fmt.pix.width, fmt.fmt.pix.height);
fmt.fmt.pix.field = V4L2_FIELD_ANY;
if (dec->cmdl->mapType == LINEAR_FRAME_MAP) {
if (dec->cmdl->chromaInterleave == 0) {
if (dec->mjpg_fmt == MODE420)
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420;
else if (dec->mjpg_fmt == MODE422)
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV422P;
else {
err_msg("Display cannot support this MJPG format\n");
goto err;
}
} else {
if (dec->mjpg_fmt == MODE420) {
info_msg("Display: NV12\n");
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_NV12;
}
else if (dec->mjpg_fmt == MODE422) {
info_msg("Display: NV16\n");
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_NV16;
}
else {
err_msg("Display cannot support this MJPG format\n");
goto err;
}
}
}
else if (dec->cmdl->mapType == TILED_FRAME_MB_RASTER_MAP) {
fmt.fmt.pix.pixelformat = IPU_PIX_FMT_TILED_NV12;
}
else if (dec->cmdl->mapType == TILED_FIELD_MB_RASTER_MAP) {
fmt.fmt.pix.pixelformat = IPU_PIX_FMT_TILED_NV12F;
}
else {
err_msg("Display cannot support mapType = %d\n", dec->cmdl->mapType);
goto err;
}
err = ioctl(fd, VIDIOC_S_FMT, &fmt);
if (err < 0) {
err_msg("VIDIOC_S_FMT failed\n");
goto err;
}
err = ioctl(fd, VIDIOC_G_FMT, &fmt);
if (err < 0) {
err_msg("VIDIOC_G_FMT failed\n");
goto err;
}
reqbuf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
reqbuf.memory = V4L2_MEMORY_MMAP;
reqbuf.count = nframes;
err = ioctl(fd, VIDIOC_REQBUFS, &reqbuf);
if (err < 0) {
err_msg("VIDIOC_REQBUFS failed\n");
goto err;
}
if (reqbuf.count < nframes) {
err_msg("VIDIOC_REQBUFS: not enough buffers\n");
goto err;
}
for (i = 0; i < nframes; i++) {
struct v4l2_buffer buffer = {0};
struct v4l_buf *buf;
buf = calloc(1, sizeof(struct v4l_buf));
if (buf == NULL) {
v4l_free_bufs(i, disp);
goto err;
}
disp->buffers[i] = buf;
buffer.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
buffer.memory = V4L2_MEMORY_MMAP;
buffer.index = i;
err = ioctl(fd, VIDIOC_QUERYBUF, &buffer);
if (err < 0) {
err_msg("VIDIOC_QUERYBUF: not enough buffers\n");
v4l_free_bufs(i, disp);
goto err;
}
buf->start = mmap(NULL, buffer.length, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, buffer.m.offset);
if (cpu_is_mx6x()) {
/*
* Workaround for new V4L interface change, this change
* will be removed after V4L driver is updated for this.
* Need to call QUERYBUF ioctl again after mmap.
*/
err = ioctl(fd, VIDIOC_QUERYBUF, &buffer);
if (err < 0) {
err_msg("VIDIOC_QUERYBUF: not enough buffers\n");
v4l_free_bufs(i, disp);
goto err;
}
}
buf->offset = buffer.m.offset;
buf->length = buffer.length;
dprintf(3, "V4L2buf phy addr: %08x, size = %d\n",
(unsigned int)buf->offset, buf->length);
if (buf->start == MAP_FAILED) {
err_msg("mmap failed\n");
v4l_free_bufs(i, disp);
goto err;
}
}
disp->fd = fd;
disp->nframes = nframes;
/*
* Use environment VIDEO_PERFORMANCE_TEST to select different mode.
* When doing performance test, video decoding and display are in different
* threads and default display fps is controlled by cmd. Display will
* show the frame immediately if user doesn't input fps with -a option.
* This is different from normal unit test.
*/
test_mode = getenv("VIDEO_PERFORMANCE_TEST");
if (test_mode && !strcmp(test_mode, "1") && (dec->cmdl->dst_scheme == PATH_V4L2))
vpu_v4l_performance_test = 1;
if (vpu_v4l_performance_test) {
dec->disp = disp;
sem_init(&disp->avaiable_decoding_frame, 0,
dec->regfbcount - dec->minfbcount);
sem_init(&disp->avaiable_dequeue_frame, 0, 0);
pthread_mutex_init(&v4l_mutex, NULL);
/* start v4l disp loop thread */
pthread_create(&(disp->v4l_disp_loop_thread), NULL,
(void *)v4l_disp_loop_thread, (void *)dec);
}
return disp;
err:
close(fd);
free(disp);
return NULL;
}
