[vlc-devel] [PATCH 3/7] opengl: factor libplacebo helpers out to their own file
Niklas Haas
vlc at haasn.xyz
Mon Oct 1 16:51:48 CEST 2018
From: Niklas Haas <git at haasn.xyz>
This is in preparation for a new vout based on libplacebo, for which
reusing these shared helpers with OpenGL will make sense.
Apart from moving stuff around, this commit only has minor changes
(changed define names in some places, minor rewording of some options).
---
modules/video_output/Makefile.am | 1 +
.../video_output/opengl/fragment_shaders.c | 54 +-----
modules/video_output/opengl/vout_helper.c | 23 +--
modules/video_output/opengl/vout_helper.h | 144 +-------------
modules/video_output/placebo_utils.c | 102 ++++++++++
modules/video_output/placebo_utils.h | 178 ++++++++++++++++++
6 files changed, 289 insertions(+), 213 deletions(-)
create mode 100644 modules/video_output/placebo_utils.c
create mode 100644 modules/video_output/placebo_utils.h
diff --git a/modules/video_output/Makefile.am b/modules/video_output/Makefile.am
index a843882816..ea52adade5 100644
--- a/modules/video_output/Makefile.am
+++ b/modules/video_output/Makefile.am
@@ -4,6 +4,7 @@ vout_LTLIBRARIES =
EXTRA_DIST += video_output/README
OPENGL_COMMONSOURCES = video_output/opengl/vout_helper.c \
+ video_output/placebo_utils.c \
video_output/opengl/vout_helper.h video_output/opengl/converter.h \
video_output/opengl/internal.h video_output/opengl/fragment_shaders.c \
video_output/opengl/converter_sw.c
diff --git a/modules/video_output/opengl/fragment_shaders.c b/modules/video_output/opengl/fragment_shaders.c
index e117122b93..52af4939a0 100644
--- a/modules/video_output/opengl/fragment_shaders.c
+++ b/modules/video_output/opengl/fragment_shaders.c
@@ -28,6 +28,7 @@
#ifdef HAVE_LIBPLACEBO
#include <libplacebo/shaders.h>
#include <libplacebo/shaders/colorspace.h>
+#include "../placebo_utils.h"
#endif
#include <vlc_common.h>
@@ -503,57 +504,6 @@ xyz12_shader_init(opengl_tex_converter_t *tc)
return fragment_shader;
}
-#ifdef HAVE_LIBPLACEBO
-static struct pl_color_space pl_color_space_from_video_format(const video_format_t *fmt)
-{
- static enum pl_color_primaries primaries[COLOR_PRIMARIES_MAX+1] = {
- [COLOR_PRIMARIES_UNDEF] = PL_COLOR_PRIM_UNKNOWN,
- [COLOR_PRIMARIES_BT601_525] = PL_COLOR_PRIM_BT_601_525,
- [COLOR_PRIMARIES_BT601_625] = PL_COLOR_PRIM_BT_601_625,
- [COLOR_PRIMARIES_BT709] = PL_COLOR_PRIM_BT_709,
- [COLOR_PRIMARIES_BT2020] = PL_COLOR_PRIM_BT_2020,
- [COLOR_PRIMARIES_DCI_P3] = PL_COLOR_PRIM_DCI_P3,
- [COLOR_PRIMARIES_BT470_M] = PL_COLOR_PRIM_BT_470M,
- };
-
- static enum pl_color_transfer transfers[TRANSFER_FUNC_MAX+1] = {
- [TRANSFER_FUNC_UNDEF] = PL_COLOR_TRC_UNKNOWN,
- [TRANSFER_FUNC_LINEAR] = PL_COLOR_TRC_LINEAR,
- [TRANSFER_FUNC_SRGB] = PL_COLOR_TRC_SRGB,
- [TRANSFER_FUNC_SMPTE_ST2084] = PL_COLOR_TRC_PQ,
- [TRANSFER_FUNC_HLG] = PL_COLOR_TRC_HLG,
- // these are all designed to be displayed on BT.1886 displays, so this
- // is the correct way to handle them in libplacebo
- [TRANSFER_FUNC_BT470_BG] = PL_COLOR_TRC_BT_1886,
- [TRANSFER_FUNC_BT470_M] = PL_COLOR_TRC_BT_1886,
- [TRANSFER_FUNC_BT709] = PL_COLOR_TRC_BT_1886,
- [TRANSFER_FUNC_SMPTE_240] = PL_COLOR_TRC_BT_1886,
- };
-
- // Derive the signal peak/avg from the color light level metadata
- float sig_peak = fmt->lighting.MaxCLL / PL_COLOR_REF_WHITE;
- float sig_avg = fmt->lighting.MaxFALL / PL_COLOR_REF_WHITE;
-
- // As a fallback value for the signal peak, we can also use the mastering
- // metadata's luminance information
- if (!sig_peak)
- sig_peak = fmt->mastering.max_luminance / (10000.0 * PL_COLOR_REF_WHITE);
-
- // Sanitize the sig_peak/sig_avg, because of buggy or low quality tagging
- // that's sadly common in lots of typical sources
- sig_peak = (sig_peak > 1.0 && sig_peak <= 100.0) ? sig_peak : 0.0;
- sig_avg = (sig_avg >= 0.0 && sig_avg <= 1.0) ? sig_avg : 0.0;
-
- return (struct pl_color_space) {
- .primaries = primaries[fmt->primaries],
- .transfer = transfers[fmt->transfer],
- .light = PL_COLOR_LIGHT_UNKNOWN,
- .sig_peak = sig_peak,
- .sig_avg = sig_avg,
- };
-}
-#endif
-
GLuint
opengl_fragment_shader_init_impl(opengl_tex_converter_t *tc, GLenum tex_target,
vlc_fourcc_t chroma, video_color_space_t yuv_space)
@@ -624,7 +574,7 @@ opengl_fragment_shader_init_impl(opengl_tex_converter_t *tc, GLenum tex_target,
dst_space.transfer = var_InheritInteger(tc->gl, "target-trc");
pl_shader_color_map(sh, &color_params,
- pl_color_space_from_video_format(&tc->fmt),
+ vlc_placebo_ColorSpace(&tc->fmt),
dst_space, NULL, false);
struct pl_shader_obj *dither_state = NULL;
diff --git a/modules/video_output/opengl/vout_helper.c b/modules/video_output/opengl/vout_helper.c
index 89fc1ae9c7..adcc019d45 100644
--- a/modules/video_output/opengl/vout_helper.c
+++ b/modules/video_output/opengl/vout_helper.c
@@ -579,21 +579,6 @@ opengl_deinit_program(vout_display_opengl_t *vgl, struct prgm *prgm)
vlc_object_release(tc);
}
-#ifdef HAVE_LIBPLACEBO
-static void
-log_cb(void *priv, enum pl_log_level level, const char *msg)
-{
- opengl_tex_converter_t *tc = priv;
- switch (level) {
- case PL_LOG_FATAL: // fall through
- case PL_LOG_ERR: msg_Err(tc->gl, "%s", msg); break;
- case PL_LOG_WARN: msg_Warn(tc->gl,"%s", msg); break;
- case PL_LOG_INFO: msg_Info(tc->gl,"%s", msg); break;
- default: break;
- }
-}
-#endif
-
static int
opengl_init_program(vout_display_opengl_t *vgl, struct prgm *prgm,
const char *glexts, const video_format_t *fmt, bool subpics,
@@ -621,14 +606,10 @@ opengl_init_program(vout_display_opengl_t *vgl, struct prgm *prgm,
tc->fmt = *fmt;
#ifdef HAVE_LIBPLACEBO
- // create the main libplacebo context
+ // Create the main libplacebo context
if (!subpics)
{
- tc->pl_ctx = pl_context_create(PL_API_VER, &(struct pl_context_params) {
- .log_cb = log_cb,
- .log_priv = tc,
- .log_level = PL_LOG_INFO,
- });
+ tc->pl_ctx = vlc_placebo_Create(VLC_OBJECT(tc));
if (tc->pl_ctx) {
# if PL_API_VER >= 6
tc->pl_sh = pl_shader_alloc(tc->pl_ctx, NULL, 0);
diff --git a/modules/video_output/opengl/vout_helper.h b/modules/video_output/opengl/vout_helper.h
index 01c79769a9..8b413de7e0 100644
--- a/modules/video_output/opengl/vout_helper.h
+++ b/modules/video_output/opengl/vout_helper.h
@@ -32,144 +32,7 @@
#include "converter.h"
#ifdef HAVE_LIBPLACEBO
-#include <libplacebo/shaders/colorspace.h>
-
-#define RENDER_INTENT_TEXT N_("Rendering intent for color conversion")
-#define RENDER_INTENT_LONGTEXT N_("The algorithm used to convert between color spaces")
-
-static const int intent_values[] = {
- PL_INTENT_PERCEPTUAL,
- PL_INTENT_RELATIVE_COLORIMETRIC,
- PL_INTENT_SATURATION,
- PL_INTENT_ABSOLUTE_COLORIMETRIC,
-};
-
-static const char * const intent_text[] = {
- "Perceptual",
- "Relative colorimetric",
- "Absolute colorimetric",
- "Saturation",
-};
-
-#define PRIM_TEXT N_("Display primaries")
-#define PRIM_LONGTEXT N_("The primaries associated with the output display")
-
-static const int prim_values[] = {
- PL_COLOR_PRIM_UNKNOWN,
- PL_COLOR_PRIM_BT_601_525,
- PL_COLOR_PRIM_BT_601_625,
- PL_COLOR_PRIM_BT_709,
- PL_COLOR_PRIM_BT_470M,
- PL_COLOR_PRIM_BT_2020,
- PL_COLOR_PRIM_APPLE,
- PL_COLOR_PRIM_ADOBE,
- PL_COLOR_PRIM_PRO_PHOTO,
- PL_COLOR_PRIM_CIE_1931,
- PL_COLOR_PRIM_DCI_P3,
- PL_COLOR_PRIM_V_GAMUT,
- PL_COLOR_PRIM_S_GAMUT,
-};
-
-static const char * const prim_text[] = {
- "Unknown primaries",
- "ITU-R Rec. BT.601 (525-line = NTSC, SMPTE-C)",
- "ITU-R Rec. BT.601 (625-line = PAL, SECAM)",
- "ITU-R Rec. BT.709 (HD), also sRGB",
- "ITU-R Rec. BT.470 M",
- "ITU-R Rec. BT.2020 (UltraHD)",
- "Apple RGB",
- "Adobe RGB (1998)",
- "ProPhoto RGB (ROMM)",
- "CIE 1931 RGB primaries",
- "DCI-P3 (Digital Cinema)",
- "Panasonic V-Gamut (VARICAM)",
- "Sony S-Gamut",
-};
-
-#define TRC_TEXT N_("Display gamma / transfer function")
-#define TRC_LONGTEXT N_("The gamma/transfer function associated with the output display")
-
-static const int trc_values[] = {
- PL_COLOR_TRC_UNKNOWN,
- PL_COLOR_TRC_BT_1886,
- PL_COLOR_TRC_SRGB,
- PL_COLOR_TRC_LINEAR,
- PL_COLOR_TRC_GAMMA18,
- PL_COLOR_TRC_GAMMA22,
- PL_COLOR_TRC_GAMMA28,
- PL_COLOR_TRC_PRO_PHOTO,
- PL_COLOR_TRC_PQ,
- PL_COLOR_TRC_HLG,
- PL_COLOR_TRC_V_LOG,
- PL_COLOR_TRC_S_LOG1,
- PL_COLOR_TRC_S_LOG2,
-};
-
-static const char * const trc_text[] = {
- "Unknown gamma",
- "ITU-R Rec. BT.1886 (CRT emulation + OOTF)",
- "IEC 61966-2-4 sRGB (CRT emulation)",
- "Linear light content",
- "Pure power gamma 1.8",
- "Pure power gamma 2.2",
- "Pure power gamma 2.8",
- "ProPhoto RGB (ROMM)",
- "ITU-R BT.2100 PQ (perceptual quantizer), aka SMPTE ST2048",
- "ITU-R BT.2100 HLG (hybrid log-gamma), aka ARIB STD-B67",
- "Panasonic V-Log (VARICAM)",
- "Sony S-Log1",
- "Sony S-Log2",
-};
-
-#define TONEMAPPING_TEXT N_("Tone-mapping algorithm")
-#define TONEMAPPING_LONGTEXT N_("Algorithm to use when converting from wide gamut to standard gamut, or from HDR to SDR")
-
-static const int tone_values[] = {
- PL_TONE_MAPPING_HABLE,
- PL_TONE_MAPPING_MOBIUS,
- PL_TONE_MAPPING_REINHARD,
- PL_TONE_MAPPING_GAMMA,
- PL_TONE_MAPPING_LINEAR,
- PL_TONE_MAPPING_CLIP,
-};
-
-static const char * const tone_text[] = {
- "Hable (filmic mapping, recommended)",
- "Mobius (linear + knee)",
- "Reinhard (simple non-linear)",
- "Gamma-Power law",
- "Linear stretch (peak to peak)",
- "Hard clip out-of-gamut",
-};
-
-#define TONEMAP_PARAM_TEXT N_("Tone-mapping parameter")
-#define TONEMAP_PARAM_LONGTEXT N_("This parameter can be used to tune the tone-mapping curve. Specifics depend on the curve used.")
-
-#define TONEMAP_DESAT_TEXT N_("Tone-mapping desaturation coefficient")
-#define TONEMAP_DESAT_LONGTEXT N_("How strongly to desaturate overbright colors towards white. 0.0 disables this behavior.")
-
-#define TONEMAP_WARN_TEXT N_("Highlight clipped pixels")
-#define TONEMAP_WARN_LONGTEXT N_("Debugging tool to indicate which pixels were clipped as part of the tone mapping process.")
-
-#define DITHER_TEXT N_("Dithering algorithm")
-#define DITHER_LONGTEXT N_("The algorithm to use when dithering to a lower bit depth (degrades performance on some platforms).")
-
-static const int dither_values[] = {
- -1, // no dithering
- PL_DITHER_BLUE_NOISE,
- PL_DITHER_WHITE_NOISE,
- PL_DITHER_ORDERED_LUT,
-};
-
-static const char * const dither_text[] = {
- "Disabled",
- "Blue noise",
- "White noise",
- "Bayer matrix (ordered dither)",
-};
-
-#define DEPTH_TEXT N_("Dither depth override (0 = framebuffer depth)")
-#define DEPTH_LONGTEXT N_("Overrides the detected framebuffer depth. Useful to dither to lower bit depths than otherwise required.")
+#include "../placebo_utils.h"
#define add_glopts_placebo() \
set_section(N_("Colorspace conversion"), NULL) \
@@ -188,11 +51,12 @@ static const char * const dither_text[] = {
TONEMAP_PARAM_TEXT, TONEMAP_PARAM_LONGTEXT, true) \
add_float("tone-mapping-desat", pl_color_map_default_params.tone_mapping_desaturate, \
TONEMAP_DESAT_TEXT, TONEMAP_DESAT_LONGTEXT, false) \
- add_bool("tone-mapping-warn", false, TONEMAP_WARN_TEXT, TONEMAP_WARN_LONGTEXT, false) \
+ add_bool("tone-mapping-warn", false, GAMUT_WARN_TEXT, GAMUT_WARN_LONGTEXT, false) \
set_section(N_("Dithering"), NULL) \
add_integer("dither-algo", -1, DITHER_TEXT, DITHER_LONGTEXT, false) \
change_integer_list(dither_values, dither_text) \
- add_integer_with_range("dither-depth", 0, 0, 16, DEPTH_TEXT, DEPTH_LONGTEXT, false)
+ add_integer_with_range("dither-depth", 0, 0, 16, \
+ DITHER_DEPTH_TEXT, DITHER_DEPTH_LONGTEXT, false)
#else
#define add_glopts_placebo()
#endif
diff --git a/modules/video_output/placebo_utils.c b/modules/video_output/placebo_utils.c
new file mode 100644
index 0000000000..2515dc0bef
--- /dev/null
+++ b/modules/video_output/placebo_utils.c
@@ -0,0 +1,102 @@
+/*****************************************************************************
+ * placebo.c: Definition of various libplacebo helpers
+ *****************************************************************************
+ * Copyright (C) 2018 Niklas Haas
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <assert.h>
+#include <stdatomic.h>
+#include <stdlib.h>
+
+#include <vlc_common.h>
+#include "placebo_utils.h"
+
+static void Log(void *priv, enum pl_log_level level, const char *msg)
+{
+ struct vlc_object_t *obj = priv;
+
+ switch (level) {
+ case PL_LOG_FATAL: // fall through
+ case PL_LOG_ERR: msg_Err(obj, "%s", msg); break;
+ case PL_LOG_WARN: msg_Warn(obj, "%s", msg); break;
+ case PL_LOG_INFO: msg_Info(obj, "%s", msg); break;
+ case PL_LOG_DEBUG: msg_Dbg(obj, "%s", msg); break;
+ default: break;
+ }
+}
+
+struct pl_context *vlc_placebo_Create(vlc_object_t *obj)
+{
+ return pl_context_create(PL_API_VER, &(struct pl_context_params) {
+ .log_level = PL_LOG_DEBUG,
+ .log_cb = Log,
+ .log_priv = obj,
+ });
+}
+
+struct pl_color_space vlc_placebo_ColorSpace(const video_format_t *fmt)
+{
+ static const enum pl_color_primaries primaries[COLOR_PRIMARIES_MAX+1] = {
+ [COLOR_PRIMARIES_UNDEF] = PL_COLOR_PRIM_UNKNOWN,
+ [COLOR_PRIMARIES_BT601_525] = PL_COLOR_PRIM_BT_601_525,
+ [COLOR_PRIMARIES_BT601_625] = PL_COLOR_PRIM_BT_601_625,
+ [COLOR_PRIMARIES_BT709] = PL_COLOR_PRIM_BT_709,
+ [COLOR_PRIMARIES_BT2020] = PL_COLOR_PRIM_BT_2020,
+ [COLOR_PRIMARIES_DCI_P3] = PL_COLOR_PRIM_DCI_P3,
+ [COLOR_PRIMARIES_BT470_M] = PL_COLOR_PRIM_BT_470M,
+ };
+
+ static const enum pl_color_transfer transfers[TRANSFER_FUNC_MAX+1] = {
+ [TRANSFER_FUNC_UNDEF] = PL_COLOR_TRC_UNKNOWN,
+ [TRANSFER_FUNC_LINEAR] = PL_COLOR_TRC_LINEAR,
+ [TRANSFER_FUNC_SRGB] = PL_COLOR_TRC_SRGB,
+ [TRANSFER_FUNC_SMPTE_ST2084] = PL_COLOR_TRC_PQ,
+ [TRANSFER_FUNC_HLG] = PL_COLOR_TRC_HLG,
+ // these are all designed to be displayed on BT.1886 displays, so this
+ // is the correct way to handle them in libplacebo
+ [TRANSFER_FUNC_BT470_BG] = PL_COLOR_TRC_BT_1886,
+ [TRANSFER_FUNC_BT470_M] = PL_COLOR_TRC_BT_1886,
+ [TRANSFER_FUNC_BT709] = PL_COLOR_TRC_BT_1886,
+ [TRANSFER_FUNC_SMPTE_240] = PL_COLOR_TRC_BT_1886,
+ };
+
+ // Derive the signal peak/avg from the color light level metadata
+ float sig_peak = fmt->lighting.MaxCLL / PL_COLOR_REF_WHITE;
+ float sig_avg = fmt->lighting.MaxFALL / PL_COLOR_REF_WHITE;
+
+ // As a fallback value for the signal peak, we can also use the mastering
+ // metadata's luminance information
+ if (!sig_peak)
+ sig_peak = fmt->mastering.max_luminance / (10000.0 * PL_COLOR_REF_WHITE);
+
+ // Sanitize the sig_peak/sig_avg, because of buggy or low quality tagging
+ // that's sadly common in lots of typical sources
+ sig_peak = (sig_peak > 1.0 && sig_peak <= 100.0) ? sig_peak : 0.0;
+ sig_avg = (sig_avg >= 0.0 && sig_avg <= 1.0) ? sig_avg : 0.0;
+
+ return (struct pl_color_space) {
+ .primaries = primaries[fmt->primaries],
+ .transfer = transfers[fmt->transfer],
+ .light = PL_COLOR_LIGHT_UNKNOWN,
+ .sig_peak = sig_peak,
+ .sig_avg = sig_avg,
+ };
+}
diff --git a/modules/video_output/placebo_utils.h b/modules/video_output/placebo_utils.h
new file mode 100644
index 0000000000..c54e4a579e
--- /dev/null
+++ b/modules/video_output/placebo_utils.h
@@ -0,0 +1,178 @@
+/*****************************************************************************
+ * placebo_utils.h: Definition of various libplacebo helpers
+ *****************************************************************************
+ * Copyright (C) 2018 Niklas Haas
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifndef VLC_PLACEBO_UTILS_H
+#define VLC_PLACEBO_UTILS_H 1
+
+#include <vlc_common.h>
+#include <vlc_picture.h>
+
+#include <libplacebo/colorspace.h>
+#include <libplacebo/shaders/colorspace.h>
+
+// Create a libplacebo context, hooked up to the log system; or NULL on OOM
+VLC_API struct pl_context *vlc_placebo_Create(vlc_object_t *);
+
+// Turn a video_format_t into the equivalent libplacebo values
+VLC_API struct pl_color_space vlc_placebo_ColorSpace(const video_format_t *);
+
+// Shared options strings/structs for libplacebo options
+
+#define RENDER_INTENT_TEXT "Rendering intent for color conversion"
+#define RENDER_INTENT_LONGTEXT "The mapping type used to convert between color spaces."
+
+static const int intent_values[] = {
+ PL_INTENT_PERCEPTUAL,
+ PL_INTENT_RELATIVE_COLORIMETRIC,
+ PL_INTENT_SATURATION,
+ PL_INTENT_ABSOLUTE_COLORIMETRIC,
+};
+
+static const char * const intent_text[] = {
+ "Perceptual",
+ "Relative colorimetric",
+ "Absolute colorimetric",
+ "Saturation",
+};
+
+#define PRIM_TEXT N_("Display primaries")
+#define PRIM_LONGTEXT N_("The primaries associated with the output display")
+
+static const int prim_values[] = {
+ PL_COLOR_PRIM_UNKNOWN,
+ PL_COLOR_PRIM_BT_601_525,
+ PL_COLOR_PRIM_BT_601_625,
+ PL_COLOR_PRIM_BT_709,
+ PL_COLOR_PRIM_BT_470M,
+ PL_COLOR_PRIM_BT_2020,
+ PL_COLOR_PRIM_APPLE,
+ PL_COLOR_PRIM_ADOBE,
+ PL_COLOR_PRIM_PRO_PHOTO,
+ PL_COLOR_PRIM_CIE_1931,
+ PL_COLOR_PRIM_DCI_P3,
+ PL_COLOR_PRIM_V_GAMUT,
+ PL_COLOR_PRIM_S_GAMUT,
+};
+
+static const char * const prim_text[] = {
+ "Automatic / Unknown primaries",
+ "ITU-R Rec. BT.601 (525-line = NTSC, SMPTE-C)",
+ "ITU-R Rec. BT.601 (625-line = PAL, SECAM)",
+ "ITU-R Rec. BT.709 (HD), also sRGB",
+ "ITU-R Rec. BT.470 M",
+ "ITU-R Rec. BT.2020 (UltraHD)",
+ "Apple RGB",
+ "Adobe RGB (1998)",
+ "ProPhoto RGB (ROMM)",
+ "CIE 1931 RGB primaries",
+ "DCI-P3 (Digital Cinema)",
+ "Panasonic V-Gamut (VARICAM)",
+ "Sony S-Gamut",
+};
+
+#define TRC_TEXT N_("Display gamma / transfer function")
+#define TRC_LONGTEXT N_("The gamma/transfer function associated with the output display")
+
+static const int trc_values[] = {
+ PL_COLOR_TRC_UNKNOWN,
+ PL_COLOR_TRC_BT_1886,
+ PL_COLOR_TRC_SRGB,
+ PL_COLOR_TRC_LINEAR,
+ PL_COLOR_TRC_GAMMA18,
+ PL_COLOR_TRC_GAMMA22,
+ PL_COLOR_TRC_GAMMA28,
+ PL_COLOR_TRC_PRO_PHOTO,
+ PL_COLOR_TRC_PQ,
+ PL_COLOR_TRC_HLG,
+ PL_COLOR_TRC_V_LOG,
+ PL_COLOR_TRC_S_LOG1,
+ PL_COLOR_TRC_S_LOG2,
+};
+
+static const char * const trc_text[] = {
+ "Automatic / Unknown gamma",
+ "ITU-R Rec. BT.1886 (CRT emulation + OOTF)",
+ "IEC 61966-2-4 sRGB (CRT emulation)",
+ "Linear light content",
+ "Pure power gamma 1.8",
+ "Pure power gamma 2.2",
+ "Pure power gamma 2.8",
+ "ProPhoto RGB (ROMM)",
+ "ITU-R BT.2100 PQ (perceptual quantizer), aka SMPTE ST2048",
+ "ITU-R BT.2100 HLG (hybrid log-gamma), aka ARIB STD-B67",
+ "Panasonic V-Log (VARICAM)",
+ "Sony S-Log1",
+ "Sony S-Log2",
+};
+
+
+#define TONEMAPPING_TEXT "Tone-mapping algorithm"
+#define TONEMAPPING_LONGTEXT "Algorithm to use when converting from wide gamut to standard gamut, or from HDR to SDR."
+
+static const int tone_values[] = {
+ PL_TONE_MAPPING_HABLE,
+ PL_TONE_MAPPING_MOBIUS,
+ PL_TONE_MAPPING_REINHARD,
+ PL_TONE_MAPPING_GAMMA,
+ PL_TONE_MAPPING_LINEAR,
+ PL_TONE_MAPPING_CLIP,
+};
+
+static const char * const tone_text[] = {
+ "Hable (filmic mapping, recommended)",
+ "Mobius (linear + knee)",
+ "Reinhard (simple non-linear)",
+ "Gamma-Power law",
+ "Linear stretch (peak to peak)",
+ "Hard clip out-of-gamut",
+};
+
+#define TONEMAP_PARAM_TEXT "Tone-mapping parameter"
+#define TONEMAP_PARAM_LONGTEXT "This parameter can be used to tune the tone-mapping curve. Specifics depend on the curve used. If left as 0, the curve's preferred default is used."
+
+#define TONEMAP_DESAT_TEXT "Tone-mapping desaturation coefficient"
+#define TONEMAP_DESAT_LONGTEXT "How strongly to desaturate bright spectral colors towards white. 0.0 disables this behavior."
+
+#define GAMUT_WARN_TEXT "Highlight clipped pixels"
+#define GAMUT_WARN_LONGTEXT "Debugging tool to indicate which pixels were clipped as part of the tone mapping process."
+
+#define DITHER_TEXT N_("Dithering algorithm")
+#define DITHER_LONGTEXT N_("The algorithm to use when dithering to a lower bit depth.")
+
+static const int dither_values[] = {
+ -1, // no dithering
+ PL_DITHER_BLUE_NOISE,
+ PL_DITHER_ORDERED_FIXED,
+ PL_DITHER_ORDERED_LUT,
+ PL_DITHER_WHITE_NOISE,
+};
+
+static const char * const dither_text[] = {
+ "Disabled",
+ "Blue noise (high quality)",
+ "Bayer matrix (ordered dither), 16x16 fixed size (fast)",
+ "Bayer matrix (ordered dither), any size",
+ "White noise (fast but low quality)",
+};
+
+#define DITHER_DEPTH_TEXT "Dither depth override (0 = auto)"
+#define DITHER_DEPTH_LONGTEXT "Overrides the detected framebuffer depth. Useful to dither to lower bit depths than otherwise required."
+
+#endif // VLC_PLACEBO_UTILS_H
--
2.19.0
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