marfrit/libva-v4l2-request-fourier
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Add support for the single-planar V4L2 API

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Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
This commit is contained in:
Paul Kocialkowski
2018-09-07 16:43:13 +02:00
parent 25a8ac4d7e
commit 7ff2543e64
12 changed files with 267 additions and 92 deletions
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src/image.c
+31 -5
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@@ -43,7 +43,11 @@ VAStatus RequestCreateImage(VADriverContextP context, VAImageFormat *format,
unsigned int destination_sizes[VIDEO_MAX_PLANES];
unsigned int destination_bytesperlines[VIDEO_MAX_PLANES];
unsigned int destination_planes_count;
unsigned int planes_count;
unsigned int format_width, format_height;
unsigned int size;
unsigned int capture_type;
struct video_format *video_format;
struct object_image *image_object;
VABufferID buffer_id;
VAImageID id;
@@ -51,18 +55,39 @@ VAStatus RequestCreateImage(VADriverContextP context, VAImageFormat *format,
unsigned int i;
int rc;
rc = v4l2_get_format(driver_data->video_fd,
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, NULL, NULL,
video_format = driver_data->video_format;
if (video_format == NULL)
return VA_STATUS_ERROR_OPERATION_FAILED;
capture_type = v4l2_type_video_capture(video_format->v4l2_mplane);
/*
* FIXME: This should be replaced by per-pixelformat hadling to
* determine the logical plane offsets and sizes;
*/
rc = v4l2_get_format(driver_data->video_fd, capture_type,
&format_width, &format_height,
destination_bytesperlines, destination_sizes,
&destination_planes_count);
&planes_count);
if (rc < 0)
return VA_STATUS_ERROR_OPERATION_FAILED;
destination_planes_count = video_format->planes_count;
size = 0;
for (i = 0; i < destination_planes_count; i++)
/* The size returned by V4L2 covers buffers, not logical planes. */
for (i = 0; i < planes_count; i++)
size += destination_sizes[i];
/* Here we calculate the sizes assuming NV12. */
destination_sizes[0] = destination_bytesperlines[0] * format_height;
for (i = 1; i < destination_planes_count; i++) {
destination_bytesperlines[i] = destination_bytesperlines[0];
destination_sizes[i] = destination_sizes[0] / 2;
}
id = object_heap_allocate(&driver_data->image_heap);
image_object = IMAGE(driver_data, id);
if (image_object == NULL)
@@ -155,10 +180,11 @@ VAStatus RequestDeriveImage(VADriverContextP context, VASurfaceID surface_id,
image->pitches[i], image->width,
i == 0 ? image->height :
image->height / 2);
else
else {
memcpy(buffer_object->data + image->offsets[i],
surface_object->destination_data[i],
surface_object->destination_sizes[i]);
}
}
surface_object->status = VASurfaceReady;