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added vloopback as output driver ( requires --output-file )

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vloopback output driver negotiates format if native is not supported
fixed support for some formats
This commit is contained in:
niels
2012-12-29 21:02:47 +01:00
parent 61e31cc83d
commit 43de80a92e
6 changed files with 145 additions and 43 deletions
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17
veejay-current/veejay-server/libstream/v4l2utils.c
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@@ -132,6 +132,7 @@ typedef struct
int grey;
int threaded;
uint32_t supported_pixel_formats[64];
int is_vloopback;
} v4l2info;
static struct {
@@ -263,7 +264,7 @@ static int v4l2_stop_video_capture( v4l2info *v )
return 1;
}
static int v4l2_pixelformat2ffmpeg( int pf )
int v4l2_pixelformat2ffmpeg( int pf )
{
switch(pf) {
case V4L2_PIX_FMT_RGB24:
@@ -301,16 +302,20 @@ static int v4l2_ffmpeg2v4l2( int pf)
case PIX_FMT_BGR24:
return V4L2_PIX_FMT_BGR24;
case PIX_FMT_BGR32:
return V4L2_PIX_FMT_BGR24;
return V4L2_PIX_FMT_BGR32;
case PIX_FMT_RGB32:
return V4L2_PIX_FMT_RGB24;
return V4L2_PIX_FMT_RGB32;
case PIX_FMT_YUV420P:
case PIX_FMT_YUVJ420P:
return V4L2_PIX_FMT_YUV420;
case PIX_FMT_YUYV422:
return V4L2_PIX_FMT_YUYV;
case PIX_FMT_YUV422P:
return V4L2_PIX_FMT_YUV422P;
case PIX_FMT_YUVJ422P:
return V4L2_PIX_FMT_YUV422P;
case PIX_FMT_UYVY422:
return V4L2_PIX_FMT_UYVY;
case PIX_FMT_YUVJ444P:
case PIX_FMT_YUV444P:
return V4L2_PIX_FMT_YUV32;
@@ -606,6 +611,7 @@ static int v4l2_negotiate_pixel_format( v4l2info *v, int host_fmt, int wid, int
supported = v4l2_tryout_pixel_format( v, V4L2_PIX_FMT_YUYV, wid, hei );
if( supported ) {
*candidate = V4L2_PIX_FMT_YUYV;
return 1;
}
@@ -894,6 +900,11 @@ void *v4l2open ( const char *file, const int input_channel, int host_fmt, int wi
v->capability.driver );
veejay_msg(VEEJAY_MSG_INFO, "v4l2: Capture card: %s",
v->capability.card );
if( strncasecmp( v->capability.card, "Dummy" , 5 ) == 0 ) {
v->is_vloopback = 1;
veejay_msg(VEEJAY_MSG_WARNING, "v4l2: This is a dummy device.");
}
veejay_msg(VEEJAY_MSG_INFO, "v4l2: Capture method: %s",
(can_read ? "read/write interface" : "mmap"));