#define GST_CAT_DEFAULT videoconvert_debug
GST_DEBUG_CATEGORY_STATIC (CAT_PERFORMANCE);
-GType gst_video_convert_get_type (void);
-
static GQuark _colorspace_quark;
#define gst_video_convert_parent_class parent_class
G_DEFINE_TYPE (GstVideoConvert, gst_video_convert, GST_TYPE_VIDEO_FILTER);
+GST_ELEMENT_REGISTER_DEFINE (videoconvert, "videoconvert",
+ GST_RANK_NONE, GST_TYPE_VIDEO_CONVERT);
#define DEFAULT_PROP_DITHER GST_VIDEO_DITHER_BAYER
#define DEFAULT_PROP_DITHER_QUANTIZATION 1
static GstFlowReturn gst_video_convert_prepare_output_buffer (GstBaseTransform * trans,
GstBuffer *input, GstBuffer **outbuf);
#endif
+static GstCapsFeatures *features_format_interlaced,
+ *features_format_interlaced_sysmem;
/* copies the given caps */
static GstCaps *
st = gst_structure_copy (st);
/* Only remove format info for the cases when we can actually convert */
if (!gst_caps_features_is_any (f)
- && gst_caps_features_is_equal (f,
- GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))
+ && (gst_caps_features_is_equal (f,
+ GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY)
+ || gst_caps_features_is_equal (f, features_format_interlaced)
+ || gst_caps_features_is_equal (f,
+ features_format_interlaced_sysmem))) {
gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
NULL);
+ }
gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
}
}
/*
- * This is an incomplete matrix of in formats and a score for the prefered output
+ * This is an incomplete matrix of in formats and a score for the preferred output
* format.
*
* out: RGB24 RGB16 ARGB AYUV YUV444 YUV422 YUV420 YUV411 YUV410 PAL GRAY
* PAL 1 3 2 6 4 6 7 8 9 0 10
* GRAY 1 4 3 2 1 5 6 7 8 9 0
*
- * PAL or GRAY are never prefered, if we can we would convert to PAL instead
+ * PAL or GRAY are never preferred, if we can we would convert to PAL instead
* of GRAY, though
- * less subsampling is prefered and if any, preferably horizontal
+ * less subsampling is preferred and if any, preferably horizontal
* We would like to keep the alpha, even if we would need to to colorspace conversion
* or lose depth.
*/
GST_VIDEO_FORMAT_INFO_NAME (out_info), NULL);
}
+static gboolean
+subsampling_unchanged (GstVideoInfo * in_info, GstVideoInfo * out_info)
+{
+ gint i;
+ const GstVideoFormatInfo *in_format, *out_format;
+
+ if (GST_VIDEO_INFO_N_COMPONENTS (in_info) !=
+ GST_VIDEO_INFO_N_COMPONENTS (out_info))
+ return FALSE;
+
+ in_format = in_info->finfo;
+ out_format = out_info->finfo;
+
+ for (i = 0; i < GST_VIDEO_INFO_N_COMPONENTS (in_info); i++) {
+ if (GST_VIDEO_FORMAT_INFO_W_SUB (in_format,
+ i) != GST_VIDEO_FORMAT_INFO_W_SUB (out_format, i))
+ return FALSE;
+ if (GST_VIDEO_FORMAT_INFO_H_SUB (in_format,
+ i) != GST_VIDEO_FORMAT_INFO_H_SUB (out_format, i))
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static void
+transfer_colorimetry_from_input (GstBaseTransform * trans, GstCaps * in_caps,
+ GstCaps * out_caps)
+{
+ GstStructure *out_caps_s = gst_caps_get_structure (out_caps, 0);
+ GstStructure *in_caps_s = gst_caps_get_structure (in_caps, 0);
+ gboolean have_colorimetry =
+ gst_structure_has_field (out_caps_s, "colorimetry");
+ gboolean have_chroma_site =
+ gst_structure_has_field (out_caps_s, "chroma-site");
+
+ /* If the output already has colorimetry and chroma-site, stop,
+ * otherwise try and transfer what we can from the input caps */
+ if (have_colorimetry && have_chroma_site)
+ return;
+
+ {
+ GstVideoInfo in_info, out_info;
+ const GValue *in_colorimetry =
+ gst_structure_get_value (in_caps_s, "colorimetry");
+
+ if (!gst_video_info_from_caps (&in_info, in_caps)) {
+ GST_WARNING_OBJECT (trans,
+ "Failed to convert sink pad caps to video info");
+ return;
+ }
+ if (!gst_video_info_from_caps (&out_info, out_caps)) {
+ GST_WARNING_OBJECT (trans,
+ "Failed to convert src pad caps to video info");
+ return;
+ }
+
+ if (!have_colorimetry && in_colorimetry != NULL) {
+ if ((GST_VIDEO_INFO_IS_YUV (&out_info)
+ && GST_VIDEO_INFO_IS_YUV (&in_info))
+ || (GST_VIDEO_INFO_IS_RGB (&out_info)
+ && GST_VIDEO_INFO_IS_RGB (&in_info))
+ || (GST_VIDEO_INFO_IS_GRAY (&out_info)
+ && GST_VIDEO_INFO_IS_GRAY (&in_info))) {
+ /* Can transfer the colorimetry intact from the input if it has it */
+ gst_structure_set_value (out_caps_s, "colorimetry", in_colorimetry);
+ } else {
+ gchar *colorimetry_str;
+
+ /* Changing between YUV/RGB - forward primaries and transfer function, but use
+ * default range and matrix.
+ * the primaries is used for conversion between RGB and XYZ (CIE 1931 coordinate).
+ * the transfer function could be another reference (e.g., HDR)
+ */
+ out_info.colorimetry.primaries = in_info.colorimetry.primaries;
+ out_info.colorimetry.transfer = in_info.colorimetry.transfer;
+
+ colorimetry_str =
+ gst_video_colorimetry_to_string (&out_info.colorimetry);
+ gst_caps_set_simple (out_caps, "colorimetry", G_TYPE_STRING,
+ colorimetry_str, NULL);
+ g_free (colorimetry_str);
+ }
+ }
+
+ /* Only YUV output needs chroma-site. If the input was also YUV and had the same chroma
+ * subsampling, transfer the siting. If the sub-sampling is changing, then the planes get
+ * scaled anyway so there's no real reason to prefer the input siting. */
+ if (!have_chroma_site && GST_VIDEO_INFO_IS_YUV (&out_info)) {
+ if (GST_VIDEO_INFO_IS_YUV (&in_info)) {
+ const GValue *in_chroma_site =
+ gst_structure_get_value (in_caps_s, "chroma-site");
+ if (in_chroma_site != NULL
+ && subsampling_unchanged (&in_info, &out_info))
+ gst_structure_set_value (out_caps_s, "chroma-site", in_chroma_site);
+ }
+ }
+ }
+}
static GstCaps *
gst_video_convert_fixate_caps (GstBaseTransform * trans,
if (direction == GST_PAD_SINK) {
if (gst_caps_is_subset (caps, result)) {
gst_caps_replace (&result, caps);
+ } else {
+ /* Try and preserve input colorimetry / chroma information */
+ transfer_colorimetry_from_input (trans, caps, result);
}
}
GstVideoInfo * out_info)
{
GstVideoConvert *space;
+ GstBaseTransformClass *gstbasetransform_class =
+ GST_BASE_TRANSFORM_GET_CLASS (filter);
+ GstVideoInfo tmp_info;
space = GST_VIDEO_CONVERT_CAST (filter);
if (in_info->interlace_mode != out_info->interlace_mode)
goto format_mismatch;
+ /* if the only thing different in the caps is the transfer function, and
+ * we're converting between equivalent transfer functions, do passthrough */
+ tmp_info = *in_info;
+ tmp_info.colorimetry.transfer = out_info->colorimetry.transfer;
+ if (gst_video_info_is_equal (&tmp_info, out_info)) {
+ if (gst_video_transfer_function_is_equivalent (in_info->
+ colorimetry.transfer, in_info->finfo->bits,
+ out_info->colorimetry.transfer, out_info->finfo->bits)) {
+ gstbasetransform_class->passthrough_on_same_caps = FALSE;
+ gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter), TRUE);
+ return TRUE;
+ }
+ }
+ gstbasetransform_class->passthrough_on_same_caps = TRUE;
+ gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter), FALSE);
space->convert = gst_video_converter_new (in_info, out_info,
gst_structure_new ("GstVideoConvertConfig",
if (space->convert == NULL)
goto no_convert;
- GST_DEBUG ("reconfigured %d %d", GST_VIDEO_INFO_FORMAT (in_info),
- GST_VIDEO_INFO_FORMAT (out_info));
+ GST_DEBUG_OBJECT (filter, "converting format %s -> %s",
+ gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (in_info)),
+ gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (out_info)));
return TRUE;
_colorspace_quark = g_quark_from_static_string ("colorspace");
- return gst_element_register (plugin, "videoconvert",
- GST_RANK_NONE, GST_TYPE_VIDEO_CONVERT);
+ features_format_interlaced =
+ gst_caps_features_new (GST_CAPS_FEATURE_FORMAT_INTERLACED, NULL);
+ features_format_interlaced_sysmem =
+ gst_caps_features_copy (features_format_interlaced);
+ gst_caps_features_add (features_format_interlaced_sysmem,
+ GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY);
+
+ return GST_ELEMENT_REGISTER (videoconvert, plugin);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
projects / platform / upstream / gstreamer.git / blobdiff