mirror of
https://github.com/mpv-player/mpv
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536 lines
17 KiB
C
536 lines
17 KiB
C
/*
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* This file is part of mpv.
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*
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* mpv is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* mpv is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include <math.h>
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#include "mpv_talloc.h"
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#include "config.h"
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#include "stream/stream.h"
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#include "common/common.h"
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#include "misc/bstr.h"
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#include "common/msg.h"
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#include "options/m_option.h"
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#include "options/path.h"
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#include "video/csputils.h"
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#include "lcms.h"
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#include "osdep/io.h"
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#if HAVE_LCMS2
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#include <lcms2.h>
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#include <libavutil/sha.h>
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#include <libavutil/mem.h>
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struct gl_lcms {
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void *icc_data;
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size_t icc_size;
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struct AVBufferRef *vid_profile;
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char *current_profile;
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bool using_memory_profile;
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bool changed;
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enum mp_csp_prim current_prim;
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enum mp_csp_trc current_trc;
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struct mp_log *log;
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struct mpv_global *global;
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struct mp_icc_opts *opts;
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};
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static bool parse_3dlut_size(const char *arg, int *p1, int *p2, int *p3)
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{
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if (sscanf(arg, "%dx%dx%d", p1, p2, p3) != 3)
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return false;
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for (int n = 0; n < 3; n++) {
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int s = ((int[]) { *p1, *p2, *p3 })[n];
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if (s < 2 || s > 512)
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return false;
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}
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return true;
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}
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static int validate_3dlut_size_opt(struct mp_log *log, const m_option_t *opt,
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struct bstr name, struct bstr param)
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{
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int p1, p2, p3;
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char s[20];
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snprintf(s, sizeof(s), "%.*s", BSTR_P(param));
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return parse_3dlut_size(s, &p1, &p2, &p3);
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}
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#define OPT_BASE_STRUCT struct mp_icc_opts
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const struct m_sub_options mp_icc_conf = {
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.opts = (const m_option_t[]) {
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OPT_FLAG("use-embedded-icc-profile", use_embedded, 0),
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OPT_STRING("icc-profile", profile, M_OPT_FILE),
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OPT_FLAG("icc-profile-auto", profile_auto, 0),
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OPT_STRING("icc-cache-dir", cache_dir, M_OPT_FILE),
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OPT_INT("icc-intent", intent, 0),
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OPT_CHOICE_OR_INT("icc-contrast", contrast, 0, 0, 1000000, ({"inf", -1})),
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OPT_STRING_VALIDATE("icc-3dlut-size", size_str, 0, validate_3dlut_size_opt),
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OPT_REPLACED("3dlut-size", "icc-3dlut-size"),
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OPT_REMOVED("icc-cache", "see icc-cache-dir"),
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{0}
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},
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.size = sizeof(struct mp_icc_opts),
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.defaults = &(const struct mp_icc_opts) {
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.size_str = "64x64x64",
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.intent = INTENT_RELATIVE_COLORIMETRIC,
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.use_embedded = true,
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},
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};
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static void lcms2_error_handler(cmsContext ctx, cmsUInt32Number code,
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const char *msg)
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{
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struct gl_lcms *p = cmsGetContextUserData(ctx);
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MP_ERR(p, "lcms2: %s\n", msg);
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}
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static void load_profile(struct gl_lcms *p)
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{
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talloc_free(p->icc_data);
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p->icc_data = NULL;
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p->icc_size = 0;
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p->using_memory_profile = false;
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talloc_free(p->current_profile);
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p->current_profile = NULL;
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if (!p->opts->profile || !p->opts->profile[0])
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return;
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char *fname = mp_get_user_path(NULL, p->global, p->opts->profile);
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MP_VERBOSE(p, "Opening ICC profile '%s'\n", fname);
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struct bstr iccdata = stream_read_file(fname, p, p->global,
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100000000); // 100 MB
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talloc_free(fname);
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if (!iccdata.len)
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return;
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talloc_free(p->icc_data);
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p->icc_data = iccdata.start;
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p->icc_size = iccdata.len;
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p->current_profile = talloc_strdup(p, p->opts->profile);
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}
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static void gl_lcms_destructor(void *ptr)
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{
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struct gl_lcms *p = ptr;
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av_buffer_unref(&p->vid_profile);
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}
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struct gl_lcms *gl_lcms_init(void *talloc_ctx, struct mp_log *log,
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struct mpv_global *global,
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struct mp_icc_opts *opts)
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{
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struct gl_lcms *p = talloc_ptrtype(talloc_ctx, p);
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talloc_set_destructor(p, gl_lcms_destructor);
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*p = (struct gl_lcms) {
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.global = global,
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.log = log,
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.opts = opts,
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};
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gl_lcms_update_options(p);
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return p;
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}
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void gl_lcms_update_options(struct gl_lcms *p)
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{
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if ((p->using_memory_profile && !p->opts->profile_auto) ||
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!bstr_equals(bstr0(p->opts->profile), bstr0(p->current_profile)))
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{
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load_profile(p);
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}
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p->changed = true; // probably
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}
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// Warning: profile.start must point to a ta allocation, and the function
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// takes over ownership.
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// Returns whether the internal profile was changed.
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bool gl_lcms_set_memory_profile(struct gl_lcms *p, bstr profile)
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{
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if (!p->opts->profile_auto || (p->opts->profile && p->opts->profile[0])) {
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talloc_free(profile.start);
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return false;
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}
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if (p->using_memory_profile &&
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p->icc_data && profile.start &&
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profile.len == p->icc_size &&
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memcmp(profile.start, p->icc_data, p->icc_size) == 0)
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{
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talloc_free(profile.start);
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return false;
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}
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p->changed = true;
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p->using_memory_profile = true;
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talloc_free(p->icc_data);
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p->icc_data = talloc_steal(p, profile.start);
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p->icc_size = profile.len;
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return true;
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}
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// Guards against NULL and uses bstr_equals to short-circuit some special cases
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static bool vid_profile_eq(struct AVBufferRef *a, struct AVBufferRef *b)
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{
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if (!a || !b)
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return a == b;
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return bstr_equals((struct bstr){ a->data, a->size },
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(struct bstr){ b->data, b->size });
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}
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// Return whether the profile or config has changed since the last time it was
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// retrieved. If it has changed, gl_lcms_get_lut3d() should be called.
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bool gl_lcms_has_changed(struct gl_lcms *p, enum mp_csp_prim prim,
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enum mp_csp_trc trc, struct AVBufferRef *vid_profile)
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{
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if (p->changed || p->current_prim != prim || p->current_trc != trc)
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return true;
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return !vid_profile_eq(p->vid_profile, vid_profile);
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}
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// Whether a profile is set. (gl_lcms_get_lut3d() is expected to return a lut,
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// but it could still fail due to runtime errors, such as invalid icc data.)
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bool gl_lcms_has_profile(struct gl_lcms *p)
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{
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return p->icc_size > 0;
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}
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static cmsHPROFILE get_vid_profile(struct gl_lcms *p, cmsContext cms,
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cmsHPROFILE disp_profile,
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enum mp_csp_prim prim, enum mp_csp_trc trc)
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{
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if (p->opts->use_embedded && p->vid_profile) {
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// Try using the embedded ICC profile
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cmsHPROFILE prof = cmsOpenProfileFromMemTHR(cms, p->vid_profile->data,
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p->vid_profile->size);
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if (prof) {
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MP_VERBOSE(p, "Successfully opened embedded ICC profile\n");
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return prof;
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}
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// Otherwise, warn the user and generate the profile as usual
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MP_WARN(p, "Video contained an invalid ICC profile! Ignoring...\n");
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}
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// The input profile for the transformation is dependent on the video
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// primaries and transfer characteristics
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struct mp_csp_primaries csp = mp_get_csp_primaries(prim);
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cmsCIExyY wp_xyY = {csp.white.x, csp.white.y, 1.0};
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cmsCIExyYTRIPLE prim_xyY = {
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.Red = {csp.red.x, csp.red.y, 1.0},
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.Green = {csp.green.x, csp.green.y, 1.0},
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.Blue = {csp.blue.x, csp.blue.y, 1.0},
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};
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cmsToneCurve *tonecurve[3] = {0};
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switch (trc) {
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case MP_CSP_TRC_LINEAR: tonecurve[0] = cmsBuildGamma(cms, 1.0); break;
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case MP_CSP_TRC_GAMMA18: tonecurve[0] = cmsBuildGamma(cms, 1.8); break;
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case MP_CSP_TRC_GAMMA20: tonecurve[0] = cmsBuildGamma(cms, 2.0); break;
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case MP_CSP_TRC_GAMMA22: tonecurve[0] = cmsBuildGamma(cms, 2.2); break;
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case MP_CSP_TRC_GAMMA24: tonecurve[0] = cmsBuildGamma(cms, 2.4); break;
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case MP_CSP_TRC_GAMMA26: tonecurve[0] = cmsBuildGamma(cms, 2.6); break;
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case MP_CSP_TRC_GAMMA28: tonecurve[0] = cmsBuildGamma(cms, 2.8); break;
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case MP_CSP_TRC_SRGB:
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// Values copied from Little-CMS
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tonecurve[0] = cmsBuildParametricToneCurve(cms, 4,
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(double[5]){2.40, 1/1.055, 0.055/1.055, 1/12.92, 0.04045});
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break;
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case MP_CSP_TRC_PRO_PHOTO:
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tonecurve[0] = cmsBuildParametricToneCurve(cms, 4,
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(double[5]){1.8, 1.0, 0.0, 1/16.0, 0.03125});
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break;
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case MP_CSP_TRC_BT_1886: {
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// To build an appropriate BT.1886 transformation we need access to
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// the display's black point, so we LittleCMS' detection function.
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// Relative colorimetric is used since we want to approximate the
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// BT.1886 to the target device's actual black point even in e.g.
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// perceptual mode
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const int intent = MP_INTENT_RELATIVE_COLORIMETRIC;
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cmsCIEXYZ bp_XYZ;
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if (!cmsDetectBlackPoint(&bp_XYZ, disp_profile, intent, 0))
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return false;
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// Map this XYZ value back into the (linear) source space
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cmsToneCurve *linear = cmsBuildGamma(cms, 1.0);
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cmsHPROFILE rev_profile = cmsCreateRGBProfileTHR(cms, &wp_xyY, &prim_xyY,
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(cmsToneCurve*[3]){linear, linear, linear});
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cmsHPROFILE xyz_profile = cmsCreateXYZProfile();
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cmsHTRANSFORM xyz2src = cmsCreateTransformTHR(cms,
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xyz_profile, TYPE_XYZ_DBL, rev_profile, TYPE_RGB_DBL,
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intent, 0);
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cmsFreeToneCurve(linear);
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cmsCloseProfile(rev_profile);
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cmsCloseProfile(xyz_profile);
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if (!xyz2src)
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return false;
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double src_black[3];
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cmsDoTransform(xyz2src, &bp_XYZ, src_black, 1);
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cmsDeleteTransform(xyz2src);
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// Contrast limiting
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if (p->opts->contrast > 0) {
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for (int i = 0; i < 3; i++)
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src_black[i] = MPMAX(src_black[i], 1.0 / p->opts->contrast);
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}
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// Built-in contrast failsafe
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double contrast = 3.0 / (src_black[0] + src_black[1] + src_black[2]);
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MP_VERBOSE(p, "Detected ICC profile contrast: %f\n", contrast);
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if (contrast > 100000 && !p->opts->contrast) {
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MP_WARN(p, "ICC profile detected contrast very high (>100000),"
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" falling back to contrast 1000 for sanity. Set the"
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" icc-contrast option to silence this warning.\n");
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src_black[0] = src_black[1] = src_black[2] = 1.0 / 1000;
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}
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// Build the parametric BT.1886 transfer curve, one per channel
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for (int i = 0; i < 3; i++) {
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const double gamma = 2.40;
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double binv = pow(src_black[i], 1.0/gamma);
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tonecurve[i] = cmsBuildParametricToneCurve(cms, 6,
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(double[4]){gamma, 1.0 - binv, binv, 0.0});
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}
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break;
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}
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default:
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abort();
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}
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if (!tonecurve[0])
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return false;
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if (!tonecurve[1]) tonecurve[1] = tonecurve[0];
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if (!tonecurve[2]) tonecurve[2] = tonecurve[0];
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cmsHPROFILE *vid_profile = cmsCreateRGBProfileTHR(cms, &wp_xyY, &prim_xyY,
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tonecurve);
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if (tonecurve[2] != tonecurve[0]) cmsFreeToneCurve(tonecurve[2]);
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if (tonecurve[1] != tonecurve[0]) cmsFreeToneCurve(tonecurve[1]);
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cmsFreeToneCurve(tonecurve[0]);
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return vid_profile;
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}
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bool gl_lcms_get_lut3d(struct gl_lcms *p, struct lut3d **result_lut3d,
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enum mp_csp_prim prim, enum mp_csp_trc trc,
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struct AVBufferRef *vid_profile)
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{
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int s_r, s_g, s_b;
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bool result = false;
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p->changed = false;
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p->current_prim = prim;
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p->current_trc = trc;
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// We need to hold on to a reference to the video's ICC profile for as long
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// as we still need to perform equality checking, so generate a new
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// reference here
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av_buffer_unref(&p->vid_profile);
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if (vid_profile) {
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MP_VERBOSE(p, "Got an embedded ICC profile.\n");
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p->vid_profile = av_buffer_ref(vid_profile);
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if (!p->vid_profile)
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abort();
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}
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if (!parse_3dlut_size(p->opts->size_str, &s_r, &s_g, &s_b))
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return false;
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if (!gl_lcms_has_profile(p))
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return false;
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void *tmp = talloc_new(NULL);
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uint16_t *output = talloc_array(tmp, uint16_t, s_r * s_g * s_b * 4);
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struct lut3d *lut = NULL;
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cmsContext cms = NULL;
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char *cache_file = NULL;
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if (p->opts->cache_dir && p->opts->cache_dir[0]) {
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// Gamma is included in the header to help uniquely identify it,
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// because we may change the parameter in the future or make it
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// customizable, same for the primaries.
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char *cache_info = talloc_asprintf(tmp,
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"ver=1.4, intent=%d, size=%dx%dx%d, prim=%d, trc=%d, "
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"contrast=%d\n",
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p->opts->intent, s_r, s_g, s_b, prim, trc, p->opts->contrast);
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uint8_t hash[32];
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struct AVSHA *sha = av_sha_alloc();
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if (!sha)
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abort();
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av_sha_init(sha, 256);
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av_sha_update(sha, cache_info, strlen(cache_info));
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if (vid_profile)
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av_sha_update(sha, vid_profile->data, vid_profile->size);
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av_sha_update(sha, p->icc_data, p->icc_size);
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av_sha_final(sha, hash);
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av_free(sha);
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char *cache_dir = mp_get_user_path(tmp, p->global, p->opts->cache_dir);
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cache_file = talloc_strdup(tmp, "");
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for (int i = 0; i < sizeof(hash); i++)
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cache_file = talloc_asprintf_append(cache_file, "%02X", hash[i]);
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cache_file = mp_path_join(tmp, cache_dir, cache_file);
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mp_mkdirp(cache_dir);
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}
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// check cache
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if (cache_file && stat(cache_file, &(struct stat){0}) == 0) {
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MP_VERBOSE(p, "Opening 3D LUT cache in file '%s'.\n", cache_file);
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struct bstr cachedata = stream_read_file(cache_file, tmp, p->global,
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1000000000); // 1 GB
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if (cachedata.len == talloc_get_size(output)) {
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memcpy(output, cachedata.start, cachedata.len);
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goto done;
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} else {
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MP_WARN(p, "3D LUT cache invalid!\n");
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}
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}
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cms = cmsCreateContext(NULL, p);
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if (!cms)
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goto error_exit;
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cmsSetLogErrorHandlerTHR(cms, lcms2_error_handler);
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cmsHPROFILE profile =
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cmsOpenProfileFromMemTHR(cms, p->icc_data, p->icc_size);
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if (!profile)
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goto error_exit;
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cmsHPROFILE vid_hprofile = get_vid_profile(p, cms, profile, prim, trc);
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if (!vid_hprofile) {
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cmsCloseProfile(profile);
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goto error_exit;
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}
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cmsHTRANSFORM trafo = cmsCreateTransformTHR(cms, vid_hprofile, TYPE_RGB_16,
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profile, TYPE_RGBA_16,
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p->opts->intent,
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cmsFLAGS_HIGHRESPRECALC |
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cmsFLAGS_BLACKPOINTCOMPENSATION);
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cmsCloseProfile(profile);
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cmsCloseProfile(vid_hprofile);
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if (!trafo)
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goto error_exit;
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// transform a (s_r)x(s_g)x(s_b) cube, with 3 components per channel
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uint16_t *input = talloc_array(tmp, uint16_t, s_r * 3);
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for (int b = 0; b < s_b; b++) {
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for (int g = 0; g < s_g; g++) {
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|
for (int r = 0; r < s_r; r++) {
|
|
input[r * 3 + 0] = r * 65535 / (s_r - 1);
|
|
input[r * 3 + 1] = g * 65535 / (s_g - 1);
|
|
input[r * 3 + 2] = b * 65535 / (s_b - 1);
|
|
}
|
|
size_t base = (b * s_r * s_g + g * s_r) * 4;
|
|
cmsDoTransform(trafo, input, output + base, s_r);
|
|
}
|
|
}
|
|
|
|
cmsDeleteTransform(trafo);
|
|
|
|
if (cache_file) {
|
|
FILE *out = fopen(cache_file, "wb");
|
|
if (out) {
|
|
fwrite(output, talloc_get_size(output), 1, out);
|
|
fclose(out);
|
|
}
|
|
}
|
|
|
|
done: ;
|
|
|
|
lut = talloc_ptrtype(NULL, lut);
|
|
*lut = (struct lut3d) {
|
|
.data = talloc_steal(lut, output),
|
|
.size = {s_r, s_g, s_b},
|
|
};
|
|
|
|
*result_lut3d = lut;
|
|
result = true;
|
|
|
|
error_exit:
|
|
|
|
if (cms)
|
|
cmsDeleteContext(cms);
|
|
|
|
if (!lut)
|
|
MP_FATAL(p, "Error loading ICC profile.\n");
|
|
|
|
talloc_free(tmp);
|
|
return result;
|
|
}
|
|
|
|
#else /* HAVE_LCMS2 */
|
|
|
|
const struct m_sub_options mp_icc_conf = {
|
|
.opts = (const m_option_t[]) { {0} },
|
|
.size = sizeof(struct mp_icc_opts),
|
|
.defaults = &(const struct mp_icc_opts) {0},
|
|
};
|
|
|
|
struct gl_lcms *gl_lcms_init(void *talloc_ctx, struct mp_log *log,
|
|
struct mpv_global *global,
|
|
struct mp_icc_opts *opts)
|
|
{
|
|
return (struct gl_lcms *) talloc_new(talloc_ctx);
|
|
}
|
|
|
|
void gl_lcms_update_options(struct gl_lcms *p) { }
|
|
bool gl_lcms_set_memory_profile(struct gl_lcms *p, bstr profile) {return false;}
|
|
|
|
bool gl_lcms_has_changed(struct gl_lcms *p, enum mp_csp_prim prim,
|
|
enum mp_csp_trc trc, struct AVBufferRef *vid_profile)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool gl_lcms_has_profile(struct gl_lcms *p)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool gl_lcms_get_lut3d(struct gl_lcms *p, struct lut3d **result_lut3d,
|
|
enum mp_csp_prim prim, enum mp_csp_trc trc,
|
|
struct AVBufferRef *vid_profile)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
#endif
|