Mesa (master): g3dvl: Color space conv interface & vl impl.
Younes Manton
ymanton at kemper.freedesktop.org
Fri Oct 2 02:58:14 UTC 2009
Module: Mesa
Branch: master
Commit: e00da1476fcdf8e5877fc1e62118080f5c4193f0
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=e00da1476fcdf8e5877fc1e62118080f5c4193f0
Author: Younes Manton <younes.m at gmail.com>
Date: Thu Oct 1 21:53:17 2009 -0400
g3dvl: Color space conv interface & vl impl.
Interface is pipe_video_context::set_csc_matrix().
vl_csc.h defines some helpers to generate CSC matrices based on one of
the color standard and a user defined ProcAmp (brightness, contrast,
saturation, hue).
---
src/gallium/auxiliary/vl/Makefile | 1 +
src/gallium/auxiliary/vl/SConscript | 1 +
src/gallium/auxiliary/vl/vl_compositor.c | 139 ++++--------------
src/gallium/auxiliary/vl/vl_compositor.h | 2 +
src/gallium/auxiliary/vl/vl_csc.c | 179 +++++++++++++++++++++++
src/gallium/auxiliary/vl/vl_csc.h | 26 ++++
src/gallium/drivers/softpipe/sp_video_context.c | 10 ++
src/gallium/include/pipe/p_video_context.h | 4 +-
8 files changed, 249 insertions(+), 113 deletions(-)
diff --git a/src/gallium/auxiliary/vl/Makefile b/src/gallium/auxiliary/vl/Makefile
index 71bfb93..4314c1e 100644
--- a/src/gallium/auxiliary/vl/Makefile
+++ b/src/gallium/auxiliary/vl/Makefile
@@ -7,6 +7,7 @@ C_SOURCES = \
vl_bitstream_parser.c \
vl_mpeg12_mc_renderer.c \
vl_compositor.c \
+ vl_csc.c \
vl_shader_build.c
include ../../Makefile.template
diff --git a/src/gallium/auxiliary/vl/SConscript b/src/gallium/auxiliary/vl/SConscript
index eb50940..aed69f5 100644
--- a/src/gallium/auxiliary/vl/SConscript
+++ b/src/gallium/auxiliary/vl/SConscript
@@ -6,6 +6,7 @@ vl = env.ConvenienceLibrary(
'vl_bitstream_parser.c',
'vl_mpeg12_mc_renderer.c',
'vl_compositor.c',
+ 'vl_csc.c',
'vl_shader_build.c',
])
diff --git a/src/gallium/auxiliary/vl/vl_compositor.c b/src/gallium/auxiliary/vl/vl_compositor.c
index 6431da6..5d3458a 100644
--- a/src/gallium/auxiliary/vl/vl_compositor.c
+++ b/src/gallium/auxiliary/vl/vl_compositor.c
@@ -5,6 +5,7 @@
#include <tgsi/tgsi_parse.h>
#include <tgsi/tgsi_build.h>
#include <util/u_memory.h>
+#include "vl_csc.h"
#include "vl_shader_build.h"
struct vertex2f
@@ -27,7 +28,6 @@ struct vertex_shader_consts
struct fragment_shader_consts
{
- struct vertex4f bias;
float matrix[16];
};
@@ -49,94 +49,6 @@ static const struct vertex2f surface_verts[4] =
*/
static const struct vertex2f *surface_texcoords = surface_verts;
-/*
- * Identity color conversion constants, for debugging
- */
-static const struct fragment_shader_consts identity =
-{
- {
- 0.0f, 0.0f, 0.0f, 0.0f
- },
- {
- 1.0f, 0.0f, 0.0f, 0.0f,
- 0.0f, 1.0f, 0.0f, 0.0f,
- 0.0f, 0.0f, 1.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 1.0f
- }
-};
-
-/*
- * Converts ITU-R BT.601 YCbCr pixels to RGB pixels where:
- * Y is in [16,235], Cb and Cr are in [16,240]
- * R, G, and B are in [16,235]
- */
-static const struct fragment_shader_consts bt_601 =
-{
- {
- 0.0f, 0.501960784f, 0.501960784f, 0.0f
- },
- {
- 1.0f, 0.0f, 1.371f, 0.0f,
- 1.0f, -0.336f, -0.698f, 0.0f,
- 1.0f, 1.732f, 0.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 1.0f
- }
-};
-
-/*
- * Converts ITU-R BT.601 YCbCr pixels to RGB pixels where:
- * Y is in [16,235], Cb and Cr are in [16,240]
- * R, G, and B are in [0,255]
- */
-static const struct fragment_shader_consts bt_601_full =
-{
- {
- 0.062745098f, 0.501960784f, 0.501960784f, 0.0f
- },
- {
- 1.164f, 0.0f, 1.596f, 0.0f,
- 1.164f, -0.391f, -0.813f, 0.0f,
- 1.164f, 2.018f, 0.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 1.0f
- }
-};
-
-/*
- * Converts ITU-R BT.709 YCbCr pixels to RGB pixels where:
- * Y is in [16,235], Cb and Cr are in [16,240]
- * R, G, and B are in [16,235]
- */
-static const struct fragment_shader_consts bt_709 =
-{
- {
- 0.0f, 0.501960784f, 0.501960784f, 0.0f
- },
- {
- 1.0f, 0.0f, 1.540f, 0.0f,
- 1.0f, -0.183f, -0.459f, 0.0f,
- 1.0f, 1.816f, 0.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 1.0f
- }
-};
-
-/*
- * Converts ITU-R BT.709 YCbCr pixels to RGB pixels where:
- * Y is in [16,235], Cb and Cr are in [16,240]
- * R, G, and B are in [0,255]
- */
-const struct fragment_shader_consts bt_709_full =
-{
- {
- 0.062745098f, 0.501960784f, 0.501960784f, 0.0f
- },
- {
- 1.164f, 0.0f, 1.793f, 0.0f,
- 1.164f, -0.213f, -0.534f, 0.0f,
- 1.164f, 2.115f, 0.0f, 0.0f,
- 0.0f, 0.0f, 0.0f, 1.0f
- }
-};
-
static void
create_vert_shader(struct vl_compositor *c)
{
@@ -245,10 +157,9 @@ create_frag_shader(struct vl_compositor *c)
ti += tgsi_build_full_declaration(&decl, &tokens[ti], header, max_tokens - ti);
/*
- * decl c0 ; Bias vector for CSC
- * decl c1-c4 ; CSC matrix c1-c4
+ * decl c0-c3 ; CSC matrix c0-c3
*/
- decl = vl_decl_constants(TGSI_SEMANTIC_GENERIC, 0, 0, 4);
+ decl = vl_decl_constants(TGSI_SEMANTIC_GENERIC, 0, 0, 3);
ti += tgsi_build_full_declaration(&decl, &tokens[ti], header, max_tokens - ti);
/* decl o0 ; Fragment color */
@@ -267,17 +178,14 @@ create_frag_shader(struct vl_compositor *c)
inst = vl_tex(TGSI_TEXTURE_2D, TGSI_FILE_TEMPORARY, 0, TGSI_FILE_INPUT, 0, TGSI_FILE_SAMPLER, 0);
ti += tgsi_build_full_instruction(&inst, &tokens[ti], header, max_tokens - ti);
- /* sub t0, t0, c0 ; Subtract bias vector from pixel */
- inst = vl_inst3(TGSI_OPCODE_SUB, TGSI_FILE_TEMPORARY, 0, TGSI_FILE_TEMPORARY, 0, TGSI_FILE_CONSTANT, 0);
- ti += tgsi_build_full_instruction(&inst, &tokens[ti], header, max_tokens - ti);
-
/*
- * dp4 o0.x, t0, c1 ; Multiply pixel by the color conversion matrix
- * dp4 o0.y, t0, c2
- * dp4 o0.z, t0, c3
+ * dp4 o0.x, t0, c0 ; Multiply pixel by the color conversion matrix
+ * dp4 o0.y, t0, c1
+ * dp4 o0.z, t0, c2
+ * dp4 o0.w, t0, c3
*/
- for (i = 0; i < 3; ++i) {
- inst = vl_inst3(TGSI_OPCODE_DP4, TGSI_FILE_OUTPUT, 0, TGSI_FILE_TEMPORARY, 0, TGSI_FILE_CONSTANT, i + 1);
+ for (i = 0; i < 4; ++i) {
+ inst = vl_inst3(TGSI_OPCODE_DP4, TGSI_FILE_OUTPUT, 0, TGSI_FILE_TEMPORARY, 0, TGSI_FILE_CONSTANT, i);
inst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_X << i;
ti += tgsi_build_full_instruction(&inst, &tokens[ti], header, max_tokens - ti);
}
@@ -352,6 +260,8 @@ static void cleanup_shaders(struct vl_compositor *c)
static bool
init_buffers(struct vl_compositor *c)
{
+ struct fragment_shader_consts fsc;
+
assert(c);
/*
@@ -438,18 +348,9 @@ init_buffers(struct vl_compositor *c)
sizeof(struct fragment_shader_consts)
);
- /*
- * TODO: Refactor this into a seperate function,
- * allow changing the CSC matrix at runtime to switch between regular & full versions
- */
- memcpy
- (
- pipe_buffer_map(c->pipe->screen, c->fs_const_buf.buffer, PIPE_BUFFER_USAGE_CPU_WRITE),
- &bt_601_full,
- sizeof(struct fragment_shader_consts)
- );
+ vl_csc_get_matrix(VL_CSC_COLOR_STANDARD_IDENTITY, NULL, true, fsc.matrix);
- pipe_buffer_unmap(c->pipe->screen, c->fs_const_buf.buffer);
+ vl_compositor_set_csc_matrix(c, fsc.matrix);
return true;
}
@@ -588,3 +489,17 @@ void vl_compositor_render(struct vl_compositor *compositor,
pipe_surface_reference(&compositor->fb_state.cbufs[0], NULL);
}
+
+void vl_compositor_set_csc_matrix(struct vl_compositor *compositor, const float *mat)
+{
+ assert(compositor);
+
+ memcpy
+ (
+ pipe_buffer_map(compositor->pipe->screen, compositor->fs_const_buf.buffer, PIPE_BUFFER_USAGE_CPU_WRITE),
+ mat,
+ sizeof(struct fragment_shader_consts)
+ );
+
+ pipe_buffer_unmap(compositor->pipe->screen, compositor->fs_const_buf.buffer);
+}
diff --git a/src/gallium/auxiliary/vl/vl_compositor.h b/src/gallium/auxiliary/vl/vl_compositor.h
index 19ad66d..975ea00 100644
--- a/src/gallium/auxiliary/vl/vl_compositor.h
+++ b/src/gallium/auxiliary/vl/vl_compositor.h
@@ -44,4 +44,6 @@ void vl_compositor_render(struct vl_compositor *compositor,
struct pipe_video_rect *layer_dst_areas,*/
struct pipe_fence_handle **fence);
+void vl_compositor_set_csc_matrix(struct vl_compositor *compositor, const float *mat);
+
#endif /* vl_compositor_h */
diff --git a/src/gallium/auxiliary/vl/vl_csc.c b/src/gallium/auxiliary/vl/vl_csc.c
new file mode 100644
index 0000000..828cebe
--- /dev/null
+++ b/src/gallium/auxiliary/vl/vl_csc.c
@@ -0,0 +1,179 @@
+#include "vl_csc.h"
+#include <util/u_math.h>
+#include <util/u_debug.h>
+
+/*
+ * Color space conversion formulas
+ *
+ * To convert YCbCr to RGB,
+ * vec4 ycbcr, rgb
+ * mat44 csc
+ * rgb = csc * ycbcr
+ *
+ * To calculate the color space conversion matrix csc with ProcAmp adjustments,
+ * mat44 csc, cstd, procamp, bias
+ * csc = cstd * (procamp * bias)
+ *
+ * Where cstd is a matrix corresponding to one of the color standards (BT.601, BT.709, etc)
+ * adjusted for the kind of YCbCr -> RGB mapping wanted (1:1, full),
+ * bias is a matrix corresponding to the kind of YCbCr -> RGB mapping wanted (1:1, full)
+ *
+ * To calculate procamp,
+ * mat44 procamp, hue, saturation, brightness, contrast
+ * procamp = brightness * (saturation * (contrast * hue))
+ * Alternatively,
+ * procamp = saturation * (brightness * (contrast * hue))
+ *
+ * contrast
+ * [ c, 0, 0, 0]
+ * [ 0, c, 0, 0]
+ * [ 0, 0, c, 0]
+ * [ 0, 0, 0, 1]
+ *
+ * brightness
+ * [ 1, 0, 0, b]
+ * [ 0, 1, 0, 0]
+ * [ 0, 0, 1, 0]
+ * [ 0, 0, 0, 1]
+ *
+ * saturation
+ * [ 1, 0, 0, 0]
+ * [ 0, s, 0, 0]
+ * [ 0, 0, s, 0]
+ * [ 0, 0, 0, 1]
+ *
+ * hue
+ * [ 1, 0, 0, 0]
+ * [ 0, cos(h), sin(h), 0]
+ * [ 0, -sin(h), cos(h), 0]
+ * [ 0, 0, 0, 1]
+ *
+ * procamp
+ * [ c, 0, 0, b]
+ * [ 0, c*s*cos(h), c*s*sin(h), 0]
+ * [ 0, -c*s*sin(h), c*s*cos(h), 0]
+ * [ 0, 0, 0, 1]
+ *
+ * bias
+ * [ 1, 0, 0, ybias]
+ * [ 0, 1, 0, cbbias]
+ * [ 0, 0, 1, crbias]
+ * [ 0, 0, 0, 1]
+ *
+ * csc
+ * [ c*cstd[ 0], c*cstd[ 1]*s*cos(h) - c*cstd[ 2]*s*sin(h), c*cstd[ 2]*s*cos(h) + c*cstd[ 1]*s*sin(h), cstd[ 3] + cstd[ 0]*(b + c*ybias) + cstd[ 1]*(c*cbbias*s*cos(h) + c*crbias*s*sin(h)) + cstd[ 2]*(c*crbias*s*cos(h) - c*cbbias*s*sin(h))]
+ * [ c*cstd[ 4], c*cstd[ 5]*s*cos(h) - c*cstd[ 6]*s*sin(h), c*cstd[ 6]*s*cos(h) + c*cstd[ 5]*s*sin(h), cstd[ 7] + cstd[ 4]*(b + c*ybias) + cstd[ 5]*(c*cbbias*s*cos(h) + c*crbias*s*sin(h)) + cstd[ 6]*(c*crbias*s*cos(h) - c*cbbias*s*sin(h))]
+ * [ c*cstd[ 8], c*cstd[ 9]*s*cos(h) - c*cstd[10]*s*sin(h), c*cstd[10]*s*cos(h) + c*cstd[ 9]*s*sin(h), cstd[11] + cstd[ 8]*(b + c*ybias) + cstd[ 9]*(c*cbbias*s*cos(h) + c*crbias*s*sin(h)) + cstd[10]*(c*crbias*s*cos(h) - c*cbbias*s*sin(h))]
+ * [ c*cstd[12], c*cstd[13]*s*cos(h) - c*cstd[14]*s*sin(h), c*cstd[14]*s*cos(h) + c*cstd[13]*s*sin(h), cstd[15] + cstd[12]*(b + c*ybias) + cstd[13]*(c*cbbias*s*cos(h) + c*crbias*s*sin(h)) + cstd[14]*(c*crbias*s*cos(h) - c*cbbias*s*sin(h))]
+ */
+
+/*
+ * Converts ITU-R BT.601 YCbCr pixels to RGB pixels where:
+ * Y is in [16,235], Cb and Cr are in [16,240]
+ * R, G, and B are in [16,235]
+ */
+static const float bt_601[16] =
+{
+ 1.0f, 0.0f, 1.371f, 0.0f,
+ 1.0f, -0.336f, -0.698f, 0.0f,
+ 1.0f, 1.732f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 1.0f
+};
+
+/*
+ * Converts ITU-R BT.601 YCbCr pixels to RGB pixels where:
+ * Y is in [16,235], Cb and Cr are in [16,240]
+ * R, G, and B are in [0,255]
+ */
+static const float bt_601_full[16] =
+{
+ 1.164f, 0.0f, 1.596f, 0.0f,
+ 1.164f, -0.391f, -0.813f, 0.0f,
+ 1.164f, 2.018f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 1.0f
+};
+
+/*
+ * Converts ITU-R BT.709 YCbCr pixels to RGB pixels where:
+ * Y is in [16,235], Cb and Cr are in [16,240]
+ * R, G, and B are in [16,235]
+ */
+static const float bt_709[16] =
+{
+ 1.0f, 0.0f, 1.540f, 0.0f,
+ 1.0f, -0.183f, -0.459f, 0.0f,
+ 1.0f, 1.816f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 1.0f
+};
+
+/*
+ * Converts ITU-R BT.709 YCbCr pixels to RGB pixels where:
+ * Y is in [16,235], Cb and Cr are in [16,240]
+ * R, G, and B are in [0,255]
+ */
+static const float bt_709_full[16] =
+{
+ 1.164f, 0.0f, 1.793f, 0.0f,
+ 1.164f, -0.213f, -0.534f, 0.0f,
+ 1.164f, 2.115f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 1.0f
+};
+
+static const float identity[16] =
+{
+ 1.0f, 0.0f, 0.0f, 0.0f,
+ 0.0f, 1.0f, 0.0f, 0.0f,
+ 0.0f, 0.0f, 1.0f, 0.0f,
+ 0.0f, 0.0f, 0.0f, 1.0f
+};
+
+void vl_csc_get_matrix(enum VL_CSC_COLOR_STANDARD cs,
+ struct vl_procamp *procamp,
+ bool full_range,
+ float *matrix)
+{
+ float ybias = full_range ? -16.0f/255.0f : 0.0f;
+ float cbbias = -128.0f/255.0f;
+ float crbias = -128.0f/255.0f;
+ float c = procamp ? procamp->contrast : 1.0f;
+ float s = procamp ? procamp->saturation : 1.0f;
+ float b = procamp ? procamp->brightness : 0.0f;
+ float h = procamp ? procamp->hue : 0.0f;
+ const float *cstd;
+
+ assert(matrix);
+
+ switch (cs) {
+ case VL_CSC_COLOR_STANDARD_BT_601:
+ cstd = full_range ? &bt_601_full[0] : &bt_601[0];
+ break;
+ case VL_CSC_COLOR_STANDARD_BT_709:
+ cstd = full_range ? &bt_709_full[0] : &bt_709[0];
+ break;
+ case VL_CSC_COLOR_STANDARD_IDENTITY:
+ default:
+ assert(cs == VL_CSC_COLOR_STANDARD_IDENTITY);
+ memcpy(matrix, &identity[0], sizeof(float) * 16);
+ return;
+ }
+
+ matrix[ 0] = c*cstd[ 0];
+ matrix[ 1] = c*cstd[ 1]*s*cosf(h) - c*cstd[ 2]*s*sinf(h);
+ matrix[ 2] = c*cstd[ 2]*s*cosf(h) + c*cstd[ 1]*s*sinf(h);
+ matrix[ 3] = cstd[ 3] + cstd[ 0]*(b + c*ybias) + cstd[ 1]*(c*cbbias*s*cosf(h) + c*crbias*s*sinf(h)) + cstd[ 2]*(c*crbias*s*cosf(h) - c*cbbias*s*sinf(h));
+
+ matrix[ 4] = c*cstd[ 4];
+ matrix[ 5] = c*cstd[ 5]*s*cosf(h) - c*cstd[ 6]*s*sinf(h);
+ matrix[ 6] = c*cstd[ 6]*s*cosf(h) + c*cstd[ 5]*s*sinf(h);
+ matrix[ 7] = cstd[ 7] + cstd[ 4]*(b + c*ybias) + cstd[ 5]*(c*cbbias*s*cosf(h) + c*crbias*s*sinf(h)) + cstd[ 6]*(c*crbias*s*cosf(h) - c*cbbias*s*sinf(h));
+
+ matrix[ 8] = c*cstd[ 8];
+ matrix[ 9] = c*cstd[ 9]*s*cosf(h) - c*cstd[10]*s*sinf(h);
+ matrix[10] = c*cstd[10]*s*cosf(h) + c*cstd[ 9]*s*sinf(h);
+ matrix[11] = cstd[11] + cstd[ 8]*(b + c*ybias) + cstd[ 9]*(c*cbbias*s*cosf(h) + c*crbias*s*sinf(h)) + cstd[10]*(c*crbias*s*cosf(h) - c*cbbias*s*sinf(h));
+
+ matrix[12] = c*cstd[12];
+ matrix[13] = c*cstd[13]*s*cos(h) - c*cstd[14]*s*sin(h);
+ matrix[14] = c*cstd[14]*s*cos(h) + c*cstd[13]*s*sin(h);
+ matrix[15] = cstd[15] + cstd[12]*(b + c*ybias) + cstd[13]*(c*cbbias*s*cos(h) + c*crbias*s*sin(h)) + cstd[14]*(c*crbias*s*cos(h) - c*cbbias*s*sin(h));
+}
diff --git a/src/gallium/auxiliary/vl/vl_csc.h b/src/gallium/auxiliary/vl/vl_csc.h
new file mode 100644
index 0000000..c3b87d2
--- /dev/null
+++ b/src/gallium/auxiliary/vl/vl_csc.h
@@ -0,0 +1,26 @@
+#ifndef vl_csc_h
+#define vl_csc_h
+
+#include <pipe/p_compiler.h>
+
+struct vl_procamp
+{
+ float brightness;
+ float contrast;
+ float saturation;
+ float hue;
+};
+
+enum VL_CSC_COLOR_STANDARD
+{
+ VL_CSC_COLOR_STANDARD_IDENTITY,
+ VL_CSC_COLOR_STANDARD_BT_601,
+ VL_CSC_COLOR_STANDARD_BT_709
+};
+
+void vl_csc_get_matrix(enum VL_CSC_COLOR_STANDARD cs,
+ struct vl_procamp *procamp,
+ bool full_range,
+ float *matrix);
+
+#endif /* vl_csc_h */
diff --git a/src/gallium/drivers/softpipe/sp_video_context.c b/src/gallium/drivers/softpipe/sp_video_context.c
index 7e9136d..00b4b7d 100644
--- a/src/gallium/drivers/softpipe/sp_video_context.c
+++ b/src/gallium/drivers/softpipe/sp_video_context.c
@@ -109,6 +109,15 @@ sp_mpeg12_set_decode_target(struct pipe_video_context *vpipe,
pipe_video_surface_reference(&ctx->decode_target, dt);
}
+static void sp_mpeg12_set_csc_matrix(struct pipe_video_context *vpipe, const float *mat)
+{
+ struct sp_mpeg12_context *ctx = (struct sp_mpeg12_context*)vpipe;
+
+ assert(vpipe);
+
+ vl_compositor_set_csc_matrix(&ctx->compositor, mat);
+}
+
static bool
init_pipe_state(struct sp_mpeg12_context *ctx)
{
@@ -211,6 +220,7 @@ sp_mpeg12_create(struct pipe_screen *screen, enum pipe_video_profile profile,
ctx->base.clear_surface = sp_mpeg12_clear_surface;
ctx->base.render_picture = sp_mpeg12_render_picture;
ctx->base.set_decode_target = sp_mpeg12_set_decode_target;
+ ctx->base.set_csc_matrix = sp_mpeg12_set_csc_matrix;
ctx->pipe = softpipe_create(screen);
if (!ctx->pipe) {
diff --git a/src/gallium/include/pipe/p_video_context.h b/src/gallium/include/pipe/p_video_context.h
index 937705a..4d125fa 100644
--- a/src/gallium/include/pipe/p_video_context.h
+++ b/src/gallium/include/pipe/p_video_context.h
@@ -80,7 +80,9 @@ struct pipe_video_context
void (*set_decode_target)(struct pipe_video_context *vpipe,
struct pipe_video_surface *dt);
- /* TODO: Interface for CSC matrix, scaling modes, post-processing, etc. */
+ void (*set_csc_matrix)(struct pipe_video_context *vpipe, const float *mat);
+
+ /* TODO: Interface for scaling modes, post-processing, etc. */
/*@}*/
};
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