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add yuy2 to yuv_plane_sizes, clear format struct before fetching format info from v4l2 device, add env VEEJAY_V4L2_PREFER_JPEG, changed precedence of pixel formats, fix return value in v4l2_pixelformat2ffmpeg

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This commit is contained in:
c0ntrol
2016-03-13 11:32:05 +01:00
parent 4553a2866f
commit 1fa46c70d9
3 changed files with 59 additions and 17 deletions
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66
veejay-current/veejay-server/libstream/v4l2utils.c
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@@ -325,7 +325,7 @@ int v4l2_pixelformat2ffmpeg( int pf )
break;
}
return PIX_FMT_BGR24;
return 0;
}
static int v4l2_ffmpeg2v4l2( int pf)
@@ -537,7 +537,8 @@ static int v4l2_tryout_pixel_format( v4l2info *v, int pf, int w, int h, int *src
if( vioctl( v->fd, VIDIOC_S_FMT, &format ) == -1 ) {
return 0;
}
memset( &format, 0, sizeof(format));
if( -1 == vioctl( v->fd, VIDIOC_G_FMT, &format) ) {
veejay_msg(VEEJAY_MSG_WARNING, "v4l2: VIDIOC_G_FMT failed with %s", strerror(errno));
return 0;
@@ -606,8 +607,11 @@ static int v4l2_setup_avcodec_capture( v4l2info *v, int wid, int hei, int codec_
static int v4l2_negotiate_pixel_format( v4l2info *v, int host_fmt, int wid, int hei, int *candidate, int *dw, int *dh)
{
int native_pixel_format = v4l2_ffmpeg2v4l2( host_fmt );
int prefer_jpeg = 0;
int supported = 0;
char *greycap = getenv( "VEEJAY_V4L2_GREYSCALE_ONLY" );
char *mjpegcap = getenv( "VEEJAY_V4L2_PREFER_JPEG" );
//@ does user want grey scale capture
if( greycap ) {
@@ -627,14 +631,53 @@ static int v4l2_negotiate_pixel_format( v4l2info *v, int host_fmt, int wid, int
{
veejay_msg(VEEJAY_MSG_DEBUG,"env VEEJAY_V4L2_GREYSCALE_ONLY=[0|1] not set");
}
if( mjpegcap ) {
int val = atoi( mjpegcap );
if( val == 1 ) {
veejay_msg(VEEJAY_MSG_DEBUG, "v4l2: user prefers to capture in (M)JPEG" );
prefer_jpeg = val;
}
}
if( prefer_jpeg ) {
//@ try to set JPEG/MJPEG format first
supported = v4l2_tryout_pixel_format( v, V4L2_PIX_FMT_JPEG, wid,hei,dw,dh,candidate );
if( supported ) {
veejay_msg(VEEJAY_MSG_DEBUG,"v4l2: Capture device supports JPEG format" );
if( v4l2_setup_avcodec_capture( v, wid,hei, CODEC_ID_MJPEG ) == 0 ) {
veejay_msg(VEEJAY_MSG_ERROR, "v4l2: Failed to intialize MJPEG decoder.");
return 0;
}
return 1;
}
supported = v4l2_tryout_pixel_format( v, V4L2_PIX_FMT_MJPEG, wid, hei,dw,dh,candidate );
if( supported ) {
veejay_msg(VEEJAY_MSG_DEBUG, "v4l2: Capture device supports MJPEG format");
if( v4l2_setup_avcodec_capture( v, wid,hei, CODEC_ID_MJPEG ) == 0 ) {
veejay_msg(VEEJAY_MSG_ERROR, "v4l2: Failed to intialize MJPEG decoder.");
return 0;
}
return 1;
}
} //@ otherwise, continue with normal preference of formats
//@ does capture card support our native format
int supported = v4l2_tryout_pixel_format( v, native_pixel_format, wid, hei,dw,dh,candidate );
supported = v4l2_tryout_pixel_format( v, native_pixel_format, wid, hei,dw,dh,candidate );
if( supported ) {
veejay_msg(VEEJAY_MSG_DEBUG, "v4l2: Capture device supports native format" );
return 1;
}
//@ does capture device support YUYV or UYVU
supported = v4l2_tryout_pixel_format( v, V4L2_PIX_FMT_YUYV, wid, hei,dw,dh,candidate );
if( supported ) {
veejay_msg(VEEJAY_MSG_DEBUG, "v4l2: Capture device supports YUY2" );
return 1;
}
//@does capture device support JPEG/MJPG
supported = v4l2_tryout_pixel_format( v, V4L2_PIX_FMT_JPEG, wid,hei,dw,dh,candidate );
if( supported ) {
veejay_msg(VEEJAY_MSG_DEBUG,"v4l2: Capture device supports JPEG format" );
@@ -642,8 +685,6 @@ static int v4l2_negotiate_pixel_format( v4l2info *v, int host_fmt, int wid, int
veejay_msg(VEEJAY_MSG_ERROR, "v4l2: Failed to intialize MJPEG decoder.");
return 0;
}
*candidate = V4L2_PIX_FMT_JPEG;
return 1;
}
@@ -654,19 +695,10 @@ static int v4l2_negotiate_pixel_format( v4l2info *v, int host_fmt, int wid, int
veejay_msg(VEEJAY_MSG_ERROR, "v4l2: Failed to intialize MJPEG decoder.");
return 0;
}
*candidate = V4L2_PIX_FMT_MJPEG;
return 1;
}
//@ does capture support YUYV or UYVU
supported = v4l2_tryout_pixel_format( v, V4L2_PIX_FMT_YUYV, wid, hei,dw,dh,candidate );
if( supported ) {
veejay_msg(VEEJAY_MSG_DEBUG, "v4l2: Capture device supports YUY2" );
return 1;
}
//@ or RGB 24/32
//@ does capture device support RGB 24/32
supported = v4l2_tryout_pixel_format( v, V4L2_PIX_FMT_RGB24, wid, hei ,dw,dh,candidate);
if( supported ) {
veejay_msg(VEEJAY_MSG_DEBUG, "v4l2: Capture device supports RGB 24 bit" );
@@ -680,6 +712,7 @@ static int v4l2_negotiate_pixel_format( v4l2info *v, int host_fmt, int wid, int
return 1;
}
//@ does capture device support YUV 4:2:0
supported = v4l2_tryout_pixel_format( v, V4L2_PIX_FMT_YUV420, wid, hei,dw,dh,candidate );
if( supported ) {
veejay_msg(VEEJAY_MSG_DEBUG, "v4l2: Capture device supports YUV420");
@@ -696,12 +729,11 @@ static int v4l2_negotiate_pixel_format( v4l2info *v, int host_fmt, int wid, int
if( supported ) {
veejay_msg(VEEJAY_MSG_DEBUG, "v4l2: Capture device supports %x", supported );
*candidate = supported;
return 1;
}
}
veejay_msg(VEEJAY_MSG_ERROR, "v4l2: No supported pixel format found!");
veejay_msg(VEEJAY_MSG_ERROR, "v4l2: No supported pixel format found");
return 0;
}