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fix v4l2loopback streaming, get format before setting it, do not assume card reports capabilities correctly,

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This commit is contained in:
niels
2013-09-24 20:46:10 +02:00
parent 283e05de05
commit e5752f967a
1 changed files with 42 additions and 40 deletions
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82
veejay-current/veejay-server/libstream/v4l2utils.c
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@@ -365,6 +365,9 @@ static int v4l2_enum_video_standards( v4l2info *v, char norm )
strerror(errno));
}
if( v->is_vloopback )
return 1;
memset( &standard, 0,sizeof(standard));
standard.index = 0;
@@ -423,8 +426,7 @@ static void v4l2_enum_frame_sizes( v4l2info *v )
struct v4l2_fmtdesc fmtdesc;
struct v4l2_frmsizeenum fmtsize;
struct v4l2_frmivalenum frmival;
const char *buf_types[] = { "Video Capture" , "Video Output", "Video Overlay" };
const char *flags[] = { "uncompressed", "compressed" };
veejay_msg(VEEJAY_MSG_DEBUG, "v4l2: discovering supported video formats");
//@clear mem
@@ -437,11 +439,9 @@ static void v4l2_enum_frame_sizes( v4l2info *v )
for( fmtdesc.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmtdesc.type < V4L2_BUF_TYPE_VIDEO_OVERLAY;
fmtdesc.type ++ ) {
// fmtdesc.index = 0;
while( vioctl( v->fd, VIDIOC_ENUM_FMT, &fmtdesc ) >= 0 ) {
veejay_msg(VEEJAY_MSG_DEBUG,"v4l2: Enumerate (%d,%s)", fmtdesc.index, buf_types[ fmtdesc.type ] );
veejay_msg(VEEJAY_MSG_DEBUG,"v4l2: Enumerate (%d, Video Capture)", fmtdesc.index);
veejay_msg(VEEJAY_MSG_DEBUG,"\tindex:%d", fmtdesc.index );
veejay_msg(VEEJAY_MSG_DEBUG,"\tflags:%s", flags[ fmtdesc.type ] );
veejay_msg(VEEJAY_MSG_DEBUG,"\tdescription:%s", fmtdesc.description );
veejay_msg(VEEJAY_MSG_DEBUG,"\tpixelformat:%c%c%c%c",
fmtdesc.pixelformat & 0xff,
@@ -452,25 +452,6 @@ static void v4l2_enum_frame_sizes( v4l2info *v )
v->supported_pixel_formats[ pf_cnt ] = fmtdesc.pixelformat;
pf_cnt = (pf_cnt + 1 ) % loop_limit;
//@ some other day
/* memset( &fmtsize, 0, sizeof(fmtsize));
fmtsize.pixel_format = fmtdesc.pixelformat;
while( vioctl( v->fd, VIDIOC_ENUM_FRAMESIZES, &fmtsize ) >= 0 ) {
if( fmtsize.type == V4L2_FRMSIZE_TYPE_DISCRETE ) {
veejay_msg(VEEJAY_MSG_DEBUG, "\t\t%d x %d", fmtsize.discrete.width, fmtsize.discrete.height );
} else if( fmtsize.type == V4L2_FRMSIZE_TYPE_STEPWISE ) {
veejay_msg(VEEJAY_MSG_DEBUG,"\t\t%d x %d - %d x %d with step %d / %d",
fmtsize.stepwise.min_width,
fmtsize.stepwise.min_height,
fmtsize.stepwise.max_width,
fmtsize.stepwise.min_height,
fmtsize.stepwise.step_width,
fmtsize.stepwise.step_height );
}
fmtsize.index++;
}
*/
fmtdesc.index ++;
loop_limit --; //@ endless loop in enumerating video formats
@@ -489,21 +470,35 @@ static int v4l2_tryout_pixel_format( v4l2info *v, int pf, int w, int h, int *src
memset( &format, 0, sizeof(format));
format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
/* format.fmt.pix.width = w;
format.fmt.pix.height= h;
format.fmt.pix.field = V4L2_FIELD_NONE; // V4L2_FIELD_ANY;
format.fmt.pix.pixelformat = pf;
*/
if( vioctl( v->fd, VIDIOC_G_FMT, &format ) == -1 ) {
veejay_msg(VEEJAY_MSG_WARNING, "v4l2: VIDIOC_G_FMT failed with %s", strerror(errno));
}
format.fmt.pix.width = w;
format.fmt.pix.height= h;
format.fmt.pix.field = V4L2_FIELD_ANY;
if( v->is_vloopback )
format.fmt.pix.field = V4L2_FIELD_NONE;
else
format.fmt.pix.field = V4L2_FIELD_ANY;
format.fmt.pix.pixelformat = pf;
if( vioctl( v->fd, VIDIOC_TRY_FMT, &format ) == 0 ) {
if( format.fmt.pix.pixelformat == pf ) {
veejay_msg(VEEJAY_MSG_DEBUG, "v4l2: VIDIOC_TRY_FMT reports OK: %4.4s",
(char*) &format.fmt.pix.pixelformat );
if( vioctl( v->fd, VIDIOC_S_FMT, &format ) == -1 ) {
veejay_msg(0, "v4l2: After VIDIOC_TRY_FMT , VIDIOC_S_FMT fails for: %4.4s",
(char*) &format.fmt.pix.pixelformat);
return 0;
}
*src_w = format.fmt.pix.width;
*src_h = format.fmt.pix.height;
*src_pf = format.fmt.pix.pixelformat;
return 1;
}
}
@@ -638,8 +633,13 @@ static int v4l2_negotiate_pixel_format( v4l2info *v, int host_fmt, int wid, int
if( supported ) {
return 1;
}
/*
supported = v4l2_tryout_pixel_format( v, V4L2_PIX_FMT_JPEG, wid,hei,dw,dh,candidate );
if( supported ) {
v4l2_setup_jpeg_capture( v, wid,hei );
return 1;
}
*/
//@ try anything else
int k;
for( k = 0; k < 64; k ++ ) {
@@ -698,17 +698,13 @@ static int v4l2_configure_format( v4l2info *v, int host_fmt, int wid, int hei )
yuv_plane_sizes( v->info, &(v->planes[0]),&(v->planes[1]),&(v->planes[2]),&(v->planes[3]) );
veejay_msg(VEEJAY_MSG_INFO, "v4l2: Using scaler, destination format is in %s (%dx%d), source is in %dx%d",
(char*) &cap_pf,
wid,
hei, src_wid,src_hei );
veejay_msg(VEEJAY_MSG_INFO, "v4l2: output in %dx%d, source in %dx%d",
wid,hei, src_wid,src_hei );
if( cap_pf == V4L2_PIX_FMT_JPEG ) {
v->info->data[0] = v->tmpbuf[0];
v->info->data[1] = v->tmpbuf[1];
v->info->data[2] = v->tmpbuf[2];
}
return 1;
@@ -721,7 +717,7 @@ static int v4l2_configure_format( v4l2info *v, int host_fmt, int wid, int hei )
static void v4l2_set_output_pointers( v4l2info *v, void *src )
{
uint8_t *map = (uint8_t*) src;
//@A
if( v->planes[0] > 0 ) {
v->info->data[0] = map;
}
@@ -879,8 +875,8 @@ void *v4l2open ( const char *file, const int input_channel, int host_fmt, int wi
}
if( (v->capability.capabilities & V4L2_CAP_READWRITE ) == 0 ) {
veejay_msg(VEEJAY_MSG_ERROR, "v4l2: %s does not support read/write interface.", v->capability.card);
can_read = 0;
veejay_msg(VEEJAY_MSG_WARNING, "v4l2: %s claims not to support read/write interface.", v->capability.card);
// can_read = 0;
}
if( can_stream == 0 && can_read == 0 ) {
@@ -975,7 +971,7 @@ void *v4l2open ( const char *file, const int input_channel, int host_fmt, int wi
if( v->rw == 0 ) {
v->reqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
v->reqbuf.memory= V4L2_MEMORY_MMAP;
v->reqbuf.count = 32;
v->reqbuf.count = 2;
if( -1 == vioctl( fd, VIDIOC_REQBUFS, &(v->reqbuf)) ) {
if( errno == EINVAL ) {
@@ -989,6 +985,12 @@ void *v4l2open ( const char *file, const int input_channel, int host_fmt, int wi
}
veejay_msg(VEEJAY_MSG_INFO, "v4l2: Card supports %d buffers", v->reqbuf.count );
if( v->reqbuf.count > 2 )
{
v->reqbuf.count = 2;
veejay_msg(VEEJAY_MSG_INFO, "v4l2: Using %d buffers", v->reqbuf.count );
}
v->buffers = (bufs*) calloc( v->reqbuf.count, sizeof(*v->buffers));
int i;