Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2024-10-09 19:35:51 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Bug 1302059 - use VIDIOC_ENUM_FMT & VIDIOC_ENUM_FRAMESIZES to query supported format & resolution; r=jesup

Browse Source 
MozReview-Commit-ID: AFEeb9yrIzb

--HG--
extra : rebase_source : c3b6b71b167a897cdd14e54f24b3c495d5151dd5
This commit is contained in:
Munro Chiang 2016-09-21 17:25:00 +08:00
parent ec9d0bc544
commit a268210415
1 changed files with 38 additions and 63 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

101
media/webrtc/trunk/webrtc/modules/video_capture/linux/device_info_linux.cc
View File

@ -404,77 +404,52 @@ bool DeviceInfoLinux::IsDeviceNameMatches(const char* name,
int32_t DeviceInfoLinux::FillCapabilities(int fd)
{
struct v4l2_fmtdesc fmt;
struct v4l2_frmsizeenum frmsize;
struct v4l2_frmivalenum frmival;
// set image format
struct v4l2_format video_fmt;
memset(&video_fmt, 0, sizeof(struct v4l2_format));
fmt.index = 0;
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
while (ioctl(fd, VIDIOC_ENUM_FMT, &fmt) >= 0) {
frmsize.pixel_format = fmt.pixelformat;
frmsize.index = 0;
while (ioctl(fd, VIDIOC_ENUM_FRAMESIZES, &frmsize) >= 0) {
if (frmsize.type == V4L2_FRMSIZE_TYPE_DISCRETE) {
frmival.index = 0;
frmival.pixel_format = fmt.pixelformat;
frmival.width = frmsize.discrete.width;
frmival.height = frmsize.discrete.height;
if (ioctl(fd, VIDIOC_ENUM_FRAMEINTERVALS, &frmival) >= 0) {
if (fmt.pixelformat == V4L2_PIX_FMT_YUYV ||
fmt.pixelformat == V4L2_PIX_FMT_YUV420 ||
fmt.pixelformat == V4L2_PIX_FMT_MJPEG) {
video_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
video_fmt.fmt.pix.sizeimage = 0;
VideoCaptureCapability cap;
cap.width = frmsize.discrete.width;
cap.height = frmsize.discrete.height;
cap.expectedCaptureDelay = 120;
int totalFmts = 3;
unsigned int videoFormats[] = {
V4L2_PIX_FMT_MJPEG,
V4L2_PIX_FMT_YUV420,
V4L2_PIX_FMT_YUYV };
if (fmt.pixelformat == V4L2_PIX_FMT_YUYV)
{
cap.rawType = kVideoYUY2;
}
else if (fmt.pixelformat == V4L2_PIX_FMT_YUV420)
{
cap.rawType = kVideoI420;
}
else if (fmt.pixelformat == V4L2_PIX_FMT_MJPEG)
{
cap.rawType = kVideoMJPEG;
}
int sizes = 13;
unsigned int size[][2] = { { 128, 96 }, { 160, 120 }, { 176, 144 },
{ 320, 240 }, { 352, 288 }, { 640, 480 },
{ 704, 576 }, { 800, 600 }, { 960, 720 },
{ 1280, 720 }, { 1024, 768 }, { 1440, 1080 },
{ 1920, 1080 } };
int index = 0;
for (int fmts = 0; fmts < totalFmts; fmts++)
{
for (int i = 0; i < sizes; i++)
{
video_fmt.fmt.pix.pixelformat = videoFormats[fmts];
video_fmt.fmt.pix.width = size[i][0];
video_fmt.fmt.pix.height = size[i][1];
if (ioctl(fd, VIDIOC_TRY_FMT, &video_fmt) >= 0)
{
if ((video_fmt.fmt.pix.width == size[i][0])
&& (video_fmt.fmt.pix.height == size[i][1]))
{
VideoCaptureCapability cap;
cap.width = video_fmt.fmt.pix.width;
cap.height = video_fmt.fmt.pix.height;
cap.expectedCaptureDelay = 120;
if (videoFormats[fmts] == V4L2_PIX_FMT_YUYV)
{
cap.rawType = kVideoYUY2;
cap.maxFPS = frmival.discrete.denominator / frmival.discrete.numerator;
_captureCapabilities.push_back(cap);
}
else if (videoFormats[fmts] == V4L2_PIX_FMT_YUV420)
{
cap.rawType = kVideoI420;
}
else if (videoFormats[fmts] == V4L2_PIX_FMT_MJPEG)
{
cap.rawType = kVideoMJPEG;
}
// get fps of current camera mode
// V4l2 does not have a stable method of knowing so we just guess.
if(cap.width >= 800 && cap.rawType != kVideoMJPEG)
{
cap.maxFPS = 15;
}
else
{
cap.maxFPS = 30;
}
_captureCapabilities.push_back(cap);
index++;
WEBRTC_TRACE(webrtc::kTraceInfo, webrtc::kTraceVideoCapture, _id,
"Camera capability, width:%d height:%d type:%d fps:%d",
cap.width, cap.height, cap.rawType, cap.maxFPS);
}
}
frmsize.index++;
}
fmt.index++;
}
WEBRTC_TRACE(webrtc::kTraceInfo,