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image: simplify initialization of raw images from video buffers.

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This commit is contained in:
Gwenole Beauchesne 2012-01-04 11:34:34 +01:00
parent ad390f3569
commit 13f00c67e6
1 changed files with 81 additions and 73 deletions
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154
gst-libs/gst/vaapi/gstvaapiimage.c
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@ -913,6 +913,83 @@ gst_vaapi_image_get_data_size(GstVaapiImage *image)
return image->priv->image.data_size;
}
static gboolean
init_image_from_buffer(GstVaapiImageRaw *raw_image, GstBuffer *buffer)
{
GstStructure *structure;
GstCaps *caps;
GstVaapiImageFormat format;
guint width2, height2, size2;
gint width, height;
guchar *data;
guint32 data_size;
data = GST_BUFFER_DATA(buffer);
data_size = GST_BUFFER_SIZE(buffer);
caps = GST_BUFFER_CAPS(buffer);
if (!caps)
return FALSE;
format = gst_vaapi_image_format_from_caps(caps);
structure = gst_caps_get_structure(caps, 0);
gst_structure_get_int(structure, "width", &width);
gst_structure_get_int(structure, "height", &height);
/* XXX: copied from gst_video_format_get_row_stride() -- no NV12? */
raw_image->format = format;
raw_image->width = width;
raw_image->height = height;
width2 = (width + 1) / 2;
height2 = (height + 1) / 2;
size2 = 0;
switch (format) {
case GST_VAAPI_IMAGE_NV12:
raw_image->num_planes = 2;
raw_image->pixels[0] = data;
raw_image->stride[0] = GST_ROUND_UP_4(width);
size2 += height * raw_image->stride[0];
raw_image->pixels[1] = data + size2;
raw_image->stride[1] = raw_image->stride[0];
size2 += height2 * raw_image->stride[1];
break;
case GST_VAAPI_IMAGE_YV12:
case GST_VAAPI_IMAGE_I420:
raw_image->num_planes = 3;
raw_image->pixels[0] = data;
raw_image->stride[0] = GST_ROUND_UP_4(width);
size2 += height * raw_image->stride[0];
raw_image->pixels[1] = data + size2;
raw_image->stride[1] = GST_ROUND_UP_4(width2);
size2 += height2 * raw_image->stride[1];
raw_image->pixels[2] = data + size2;
raw_image->stride[2] = raw_image->stride[1];
size2 += height2 * raw_image->stride[2];
break;
case GST_VAAPI_IMAGE_ARGB:
case GST_VAAPI_IMAGE_RGBA:
case GST_VAAPI_IMAGE_ABGR:
case GST_VAAPI_IMAGE_BGRA:
raw_image->num_planes = 1;
raw_image->pixels[0] = data;
raw_image->stride[0] = width * 4;
size2 += height * raw_image->stride[0];
break;
default:
g_error("could not compute row-stride for %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS(format));
return FALSE;
}
if (size2 != data_size) {
g_error("data_size mismatch %d / %u", size2, data_size);
if (size2 > data_size)
return FALSE;
}
return TRUE;
}
/* Copy N lines of an image */
static inline void
memcpy_pic(
@ -1080,94 +1157,25 @@ gst_vaapi_image_update_from_buffer(
)
{
GstVaapiImagePrivate *priv;
GstStructure *structure;
GstCaps *caps;
GstVaapiImageFormat format;
GstVaapiImageRaw dst_image, src_image;
guint width2, height2, size2;
gint width, height;
guchar *data;
guint32 data_size;
gboolean success;
g_return_val_if_fail(GST_VAAPI_IS_IMAGE(image), FALSE);
g_return_val_if_fail(image->priv->is_constructed, FALSE);
g_return_val_if_fail(GST_IS_BUFFER(buffer), FALSE);
priv = image->priv;
data = GST_BUFFER_DATA(buffer);
data_size = GST_BUFFER_SIZE(buffer);
caps = GST_BUFFER_CAPS(buffer);
priv = image->priv;
if (!caps)
if (!init_image_from_buffer(&src_image, buffer))
return FALSE;
format = gst_vaapi_image_format_from_caps(caps);
if (format != priv->format)
if (src_image.format != priv->format)
return FALSE;
structure = gst_caps_get_structure(caps, 0);
gst_structure_get_int(structure, "width", &width);
gst_structure_get_int(structure, "height", &height);
if (width != priv->width || height != priv->height)
if (src_image.width != priv->width || src_image.height != priv->height)
return FALSE;
if (!_gst_vaapi_image_map(image, &dst_image))
return FALSE;
/* XXX: copied from gst_video_format_get_row_stride() -- no NV12? */
src_image.format = priv->format;
src_image.width = width;
src_image.height = height;
width2 = (width + 1) / 2;
height2 = (height + 1) / 2;
size2 = 0;
switch (format) {
case GST_VAAPI_IMAGE_NV12:
src_image.num_planes = 2;
src_image.pixels[0] = data;
src_image.stride[0] = GST_ROUND_UP_4(width);
size2 += height * src_image.stride[0];
src_image.pixels[1] = data + size2;
src_image.stride[1] = src_image.stride[0];
size2 += height2 * src_image.stride[1];
break;
case GST_VAAPI_IMAGE_YV12:
case GST_VAAPI_IMAGE_I420:
src_image.num_planes = 3;
src_image.pixels[0] = data;
src_image.stride[0] = GST_ROUND_UP_4(width);
size2 += height * src_image.stride[0];
src_image.pixels[1] = data + size2;
src_image.stride[1] = GST_ROUND_UP_4(width2);
size2 += height2 * src_image.stride[1];
src_image.pixels[2] = data + size2;
src_image.stride[2] = src_image.stride[1];
size2 += height2 * src_image.stride[2];
break;
case GST_VAAPI_IMAGE_ARGB:
case GST_VAAPI_IMAGE_RGBA:
case GST_VAAPI_IMAGE_ABGR:
case GST_VAAPI_IMAGE_BGRA:
src_image.num_planes = 1;
src_image.pixels[0] = data;
src_image.stride[0] = width * 4;
size2 += height * src_image.stride[0];
break;
default:
g_error("could not compute row-stride for %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS(format));
break;
}
if (size2 != data_size) {
g_error("data_size mismatch %d / %u", size2, data_size);
if (size2 > data_size) {
_gst_vaapi_image_unmap(image);
return FALSE;
}
}
success = copy_image(&dst_image, &src_image, rect);
if (!_gst_vaapi_image_unmap(image))