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172 lines
6.5 KiB
Diff
172 lines
6.5 KiB
Diff
From 63d1316c0fd4ce22cf4a53f4aa7cb1ca16a07aa8 Mon Sep 17 00:00:00 2001
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From: Tim-Philipp Müller <tim.muller@collabora.co.uk>
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Date: Sun, 26 Feb 2012 18:19:57 +0000
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Subject: videoscale: fix negotiation after addition of new formats and methods
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Now that we no longer support all methods for all formats, we
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need to cater for that in the transform function: we can't
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transform formats not supported by the currently-selected
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mehod.
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make check, folks. It's da bomb.
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---
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diff --git a/gst/videoscale/gstvideoscale.c b/gst/videoscale/gstvideoscale.c
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index 9f072a3..60dd5ff 100644
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--- a/gst/videoscale/gstvideoscale.c
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+++ b/gst/videoscale/gstvideoscale.c
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@@ -424,10 +424,118 @@ gst_video_scale_get_property (GObject * object, guint prop_id, GValue * value,
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}
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}
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+#define NEAREST (1 << GST_VIDEO_SCALE_NEAREST)
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+#define BILINEAR (1 << GST_VIDEO_SCALE_BILINEAR)
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+#define FOURTAP (1 << GST_VIDEO_SCALE_4TAP)
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+#define LANCZOS (1 << GST_VIDEO_SCALE_LANCZOS)
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+
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+/* or we could just do lookups via table[format] if we could be bothered.. */
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+static const struct
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+{
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+ GstVideoFormat format;
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+ guint8 methods;
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+} formats_methods_table[] = {
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+ {
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+ GST_VIDEO_FORMAT_RGBx, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_xRGB, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_BGRx, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_xBGR, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_RGBA, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_ARGB, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_BGRA, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_ABGR, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_AYUV, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_ARGB64, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_AYUV64, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_RGB, NEAREST | BILINEAR | FOURTAP}, {
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+ GST_VIDEO_FORMAT_BGR, NEAREST | BILINEAR | FOURTAP}, {
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+ GST_VIDEO_FORMAT_v308, NEAREST | BILINEAR | FOURTAP}, {
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+ GST_VIDEO_FORMAT_YUY2, NEAREST | BILINEAR | FOURTAP}, {
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+ GST_VIDEO_FORMAT_YVYU, NEAREST | BILINEAR | FOURTAP}, {
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+ GST_VIDEO_FORMAT_UYVY, NEAREST | BILINEAR | FOURTAP}, {
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+ GST_VIDEO_FORMAT_Y800, NEAREST | BILINEAR | FOURTAP}, {
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+ GST_VIDEO_FORMAT_GRAY8, NEAREST | BILINEAR | FOURTAP}, {
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+ GST_VIDEO_FORMAT_GRAY16_LE, NEAREST | BILINEAR | FOURTAP}, {
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+ GST_VIDEO_FORMAT_GRAY16_BE, NEAREST | BILINEAR | FOURTAP}, {
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+ GST_VIDEO_FORMAT_Y16, NEAREST | BILINEAR | FOURTAP}, {
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+ GST_VIDEO_FORMAT_I420, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_YV12, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_Y444, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_Y42B, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_Y41B, NEAREST | BILINEAR | FOURTAP | LANCZOS}, {
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+ GST_VIDEO_FORMAT_NV12, NEAREST | BILINEAR}, {
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+ GST_VIDEO_FORMAT_RGB16, NEAREST | BILINEAR | FOURTAP}, {
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+ GST_VIDEO_FORMAT_RGB15, NEAREST | BILINEAR | FOURTAP}
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+};
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+
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+static gboolean
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+gst_video_scale_format_supported_for_method (GstVideoFormat format,
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+ GstVideoScaleMethod method)
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+{
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+ int i;
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+
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+ for (i = 0; i < G_N_ELEMENTS (formats_methods_table); ++i) {
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+ if (formats_methods_table[i].format == format)
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+ return ((formats_methods_table[i].methods & (1 << method)) != 0);
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+ }
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+ return FALSE;
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+}
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+
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+static gboolean
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+gst_video_scale_transform_supported (GstVideoScale * videoscale,
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+ GstVideoScaleMethod method, GstStructure * structure)
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+{
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+ const GValue *val;
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+ GstVideoFormat fmt;
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+ gboolean supported = TRUE;
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+ GstStructure *s;
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+ GstCaps *c;
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+
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+ /* we support these methods for all formats */
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+ if (method == GST_VIDEO_SCALE_NEAREST || method == GST_VIDEO_SCALE_BILINEAR)
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+ return TRUE;
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+
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+ /* we need fixed caps if we want to use gst_video_parse_caps() */
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+ s = gst_structure_new (gst_structure_get_name (structure),
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+ "width", G_TYPE_INT, 1, "height", G_TYPE_INT, 1, NULL);
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+
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+ if ((val = gst_structure_get_value (structure, "format"))) {
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+ gst_structure_set_value (s, "format", val);
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+ } else {
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+ if ((val = gst_structure_get_value (structure, "endianness")))
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+ gst_structure_set_value (s, "endianness", val);
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+ if ((val = gst_structure_get_value (structure, "red_mask")))
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+ gst_structure_set_value (s, "red_mask", val);
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+ if ((val = gst_structure_get_value (structure, "blue_mask")))
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+ gst_structure_set_value (s, "blue_mask", val);
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+ if ((val = gst_structure_get_value (structure, "green_mask")))
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+ gst_structure_set_value (s, "green_mask", val);
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+ if ((val = gst_structure_get_value (structure, "alpha_mask")))
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+ gst_structure_set_value (s, "alpha_mask", val);
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+ if ((val = gst_structure_get_value (structure, "depth")))
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+ gst_structure_set_value (s, "depth", val);
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+ if ((val = gst_structure_get_value (structure, "bpp")))
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+ gst_structure_set_value (s, "bpp", val);
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+ }
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+ c = gst_caps_new_full (s, NULL);
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+ if (!gst_video_format_parse_caps (c, &fmt, NULL, NULL)) {
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+ GST_ERROR_OBJECT (videoscale, "couldn't parse %" GST_PTR_FORMAT, c);
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+ } else if (!gst_video_scale_format_supported_for_method (fmt, method)) {
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+ supported = FALSE;
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+ }
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+ GST_LOG_OBJECT (videoscale, "method %d %ssupported for format %d",
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+ method, (supported) ? "" : "not ", fmt);
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+ gst_caps_unref (c);
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+
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+ return supported;
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+}
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+
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static GstCaps *
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gst_video_scale_transform_caps (GstBaseTransform * trans,
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GstPadDirection direction, GstCaps * caps)
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{
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+ GstVideoScale *videoscale = GST_VIDEO_SCALE (trans);
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+ GstVideoScaleMethod method;
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GstCaps *ret;
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GstStructure *structure;
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@@ -441,6 +549,13 @@ gst_video_scale_transform_caps (GstBaseTransform * trans,
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ret = gst_caps_copy (caps);
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structure = gst_structure_copy (gst_caps_get_structure (ret, 0));
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+ GST_OBJECT_LOCK (videoscale);
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+ method = videoscale->method;
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+ GST_OBJECT_UNLOCK (videoscale);
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+
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+ if (!gst_video_scale_transform_supported (videoscale, method, structure))
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+ goto format_not_supported;
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+
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gst_structure_set (structure,
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"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
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"height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
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@@ -452,9 +567,19 @@ gst_video_scale_transform_caps (GstBaseTransform * trans,
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}
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gst_caps_append_structure (ret, structure);
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+done:
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+
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GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret);
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return ret;
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+
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+format_not_supported:
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+ {
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+ gst_structure_free (structure);
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+ gst_caps_unref (ret);
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+ ret = gst_caps_new_empty ();
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+ goto done;
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+ }
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}
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static gboolean
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--
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cgit v0.9.0.2-2-gbebe
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