ALL: use pl_hdr_metadata and nuke sig_peak

This commit replaces all uses of sig_peak and maps all HDR metadata.

Form notable changes mixed usage of maxCLL and max_luma is resolved and
not always max_luma is used which makes vo_gpu and vo_gpu_next behave
the same way.

15 files changed, 51 insertions, 94 deletions

diff --git a/demux/demux_mkv.c b/demux/demux_mkv.c
index 1814a7efd2..41226c56ba 100644
--- a/demux/demux_mkv.c
+++ b/demux/demux_mkv.c
@@ -594,7 +594,6 @@ static void parse_trackcolour(struct demuxer *demuxer, struct mkv_track *track,
     }
     if (colour->n_max_cll) {
         track->color.hdr.max_cll = colour->max_cll;
-        track->color.sig_peak = track->color.hdr.max_cll / MP_REF_WHITE;
         MP_DBG(demuxer, "|    + MaxCLL: %"PRIu64"\n", colour->max_cll);
     }
     if (colour->n_max_fall) {
@@ -642,8 +641,6 @@ static void parse_trackcolour(struct demuxer *demuxer, struct mkv_track *track,
         }
         if (mastering->n_luminance_max) {
             track->color.hdr.max_luma = mastering->luminance_max;
-            if (!track->color.sig_peak)
-                track->color.sig_peak = track->color.hdr.max_luma / MP_REF_WHITE;
             MP_DBG(demuxer, "|    + LuminanceMax: %f\n", track->color.hdr.max_luma);
         }
     }
diff --git a/filters/f_decoder_wrapper.c b/filters/f_decoder_wrapper.c
index 6551e3478f..87489ccdf1 100644
--- a/filters/f_decoder_wrapper.c
+++ b/filters/f_decoder_wrapper.c
@@ -548,11 +548,6 @@ void mp_decoder_wrapper_set_play_dir(struct mp_decoder_wrapper *d, int dir)
     thread_unlock(p);
 }
 
-static bool is_valid_peak(float sig_peak)
-{
-    return !sig_peak || (sig_peak >= 1 && sig_peak <= 100);
-}
-
 static void fix_image_params(struct priv *p,
                              struct mp_image_params *params)
 {
@@ -623,12 +618,6 @@ static void fix_image_params(struct priv *p,
 
     mp_colorspace_merge(&m.color, &c->color);
 
-    // Sanitize the HDR peak. Sadly necessary
-    if (!is_valid_peak(m.color.sig_peak)) {
-        MP_WARN(p, "Invalid HDR peak in stream: %f\n", m.color.sig_peak);
-        m.color.sig_peak = 0.0;
-    }
-
     // Guess missing colorspace fields from metadata. This guarantees all
     // fields are at least set to legal values afterwards.
     mp_image_params_guess_csp(&m);
diff --git a/player/command.c b/player/command.c
index f61e89be9e..de215a2732 100644
--- a/player/command.c
+++ b/player/command.c
@@ -2323,7 +2323,7 @@ static int property_imgparams(struct mp_image_params p, int action, void *arg)
             SUB_PROP_STR(m_opt_choice_str(mp_csp_prim_names, p.color.primaries))},
         {"gamma",
             SUB_PROP_STR(m_opt_choice_str(mp_csp_trc_names, p.color.gamma))},
-        {"sig-peak", SUB_PROP_FLOAT(p.color.sig_peak)},
+        {"sig-peak", SUB_PROP_FLOAT(p.color.hdr.max_luma * MP_REF_WHITE)},
         {"light",
             SUB_PROP_STR(m_opt_choice_str(mp_csp_light_names, p.color.light))},
         {"chroma-location",
diff --git a/player/lua/stats.lua b/player/lua/stats.lua
index 75e44cd66f..9401a9032c 100644
--- a/player/lua/stats.lua
+++ b/player/lua/stats.lua
@@ -933,11 +933,6 @@ local function add_video(s)
         append_fps(s, "container-fps", "estimated-vf-fps")
     end
     append_img_params(s, r, ro)
-
-    if not ro["max-cll"] then
-        ro["max-cll"] = math.floor((ro["sig-peak"] or 0) * 203)
-    end
-
     append_hdr(s, ro)
     append_property(s, "packet-video-bitrate", {prefix="Bitrate:", suffix=" kbps"})
     append_filters(s, "vf", "Filters:")
diff --git a/test/meson.build b/test/meson.build
index 5ddcedd10a..59c34549af 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -64,6 +64,7 @@ img_utils_files = [
     'video/fmt-conversion.c',
     'video/img_format.c',
     'video/mp_image.c',
+    'video/out/placebo/utils.c',
     'video/sws_utils.c'
 ]
 if features['zimg']
diff --git a/test/test_utils.c b/test/test_utils.c
index ac59c17e8f..b80caf8f71 100644
--- a/test/test_utils.c
+++ b/test/test_utils.c
@@ -1,5 +1,6 @@
 #include <libavutil/common.h>
 
+#include "common/msg.h"
 #include "options/m_option.h"
 #include "options/path.h"
 #include "osdep/subprocess.h"
@@ -98,7 +99,7 @@ void assert_memcmp_impl(const char *file, int line,
 }
 
 /* Stubs: see test_utils.h */
-struct mp_log *mp_null_log;
+struct mp_log *const mp_null_log;
 const char *mp_help_text;
 
 void mp_msg(struct mp_log *log, int lev, const char *format, ...) {};
@@ -106,3 +107,5 @@ int mp_msg_find_level(const char *s) {return 0;};
 int mp_msg_level(struct mp_log *log) {return 0;};
 void mp_write_console_ansi(void) {};
 void mp_set_avdict(AVDictionary **dict, char **kv) {};
+struct mp_log *mp_log_new(void *talloc_ctx, struct mp_log *parent,
+                          const char *name) { return NULL; };
diff --git a/video/csputils.c b/video/csputils.c
index b7fe5737cd..59200c5669 100644
--- a/video/csputils.c
+++ b/video/csputils.c
@@ -129,8 +129,6 @@ void mp_colorspace_merge(struct mp_colorspace *orig, struct mp_colorspace *new)
         orig->primaries = new->primaries;
     if (!orig->gamma)
         orig->gamma = new->gamma;
-    if (!orig->sig_peak)
-        orig->sig_peak = new->sig_peak;
     if (!orig->light)
         orig->light = new->light;
     pl_hdr_metadata_merge(&orig->hdr, &new->hdr);
@@ -913,7 +911,6 @@ bool mp_colorspace_equal(struct mp_colorspace c1, struct mp_colorspace c2)
            c1.primaries == c2.primaries &&
            c1.gamma == c2.gamma &&
            c1.light == c2.light &&
-           c1.sig_peak == c2.sig_peak &&
            pl_hdr_metadata_equal(&c1.hdr, &c2.hdr);
 }
 
diff --git a/video/csputils.h b/video/csputils.h
index 5b2fe6d63e..3a904cbf38 100644
--- a/video/csputils.h
+++ b/video/csputils.h
@@ -147,7 +147,6 @@ struct mp_colorspace {
     enum mp_csp_prim primaries;
     enum mp_csp_trc gamma;
     enum mp_csp_light light;
-    float sig_peak; // highest relative value in signal. 0 = unknown/auto (deprecated)
     struct pl_hdr_metadata hdr;
 };
 
diff --git a/video/filter/vf_format.c b/video/filter/vf_format.c
index c0ec11d0b8..4997d6f173 100644
--- a/video/filter/vf_format.c
+++ b/video/filter/vf_format.c
@@ -77,14 +77,12 @@ static void set_params(struct vf_format_opts *p, struct mp_image_params *out,
             // When changing the gamma function explicitly, also reset stuff
             // related to the gamma function since that information will almost
             // surely be false now and have to be re-inferred
-            out->color.sig_peak = 0.0;
+            out->color.hdr = (struct pl_hdr_metadata){0};
             out->color.light = MP_CSP_LIGHT_AUTO;
         }
     }
-    if (p->sig_peak) {
-        out->color.sig_peak = p->sig_peak;
-        out->color.hdr.max_cll = p->sig_peak;
-    }
+    if (p->sig_peak)
+        out->color.hdr = (struct pl_hdr_metadata){ .max_luma = p->sig_peak * MP_REF_WHITE };
     if (p->light)
         out->color.light = p->light;
     if (p->chroma_location)
diff --git a/video/image_writer.c b/video/image_writer.c
index 75ac01ec37..96f10c7567 100644
--- a/video/image_writer.c
+++ b/video/image_writer.c
@@ -637,7 +637,7 @@ static struct mp_image *convert_image(struct mp_image *image, int destfmt,
         p.color.primaries = MP_CSP_PRIM_BT_709;
         p.color.gamma = MP_CSP_TRC_AUTO;
         p.color.light = MP_CSP_LIGHT_DISPLAY;
-        p.color.sig_peak = 0;
+        p.color.hdr = (struct pl_hdr_metadata){0};
         if (p.color.space != MP_CSP_RGB) {
             p.color.levels = yuv_levels;
             p.color.space = MP_CSP_BT_601;
diff --git a/video/mp_image.c b/video/mp_image.c
index 2b8fbeb033..dff2051d39 100644
--- a/video/mp_image.c
+++ b/video/mp_image.c
@@ -27,6 +27,7 @@
 #include <libavutil/rational.h>
 #include <libavcodec/avcodec.h>
 #include <libavutil/mastering_display_metadata.h>
+#include <libplacebo/utils/libav.h>
 
 #if LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(57, 16, 100)
 # include <libavutil/dovi_meta.h>
@@ -41,6 +42,7 @@
 #include "mp_image.h"
 #include "osdep/threads.h"
 #include "sws_utils.h"
+#include "out/placebo/utils.h"
 
 // Determine strides, plane sizes, and total required size for an image
 // allocation. Returns total size on success, <0 on error. Unused planes
@@ -776,8 +778,6 @@ char *mp_image_params_to_str_buf(char *b, size_t bs,
                         m_opt_choice_str(mp_csp_trc_names, p->color.gamma),
                         m_opt_choice_str(mp_csp_levels_names, p->color.levels),
                         m_opt_choice_str(mp_csp_light_names, p->color.light));
-        if (p->color.sig_peak)
-            mp_snprintf_cat(b, bs, " SP=%f", p->color.sig_peak);
         mp_snprintf_cat(b, bs, " CL=%s",
                         m_opt_choice_str(mp_chroma_names, p->chroma_location));
         if (mp_image_crop_valid(p)) {
@@ -955,20 +955,20 @@ void mp_image_params_guess_csp(struct mp_image_params *params)
         params->color.gamma = MP_CSP_TRC_AUTO;
     }
 
-    if (!params->color.sig_peak) {
+    if (!params->color.hdr.max_luma) {
         if (params->color.gamma == MP_CSP_TRC_HLG) {
-            params->color.sig_peak = 1000 / MP_REF_WHITE; // reference display
+            params->color.hdr.max_luma = 1000; // reference display
         } else {
             // If the signal peak is unknown, we're forced to pick the TRC's
             // nominal range as the signal peak to prevent clipping
-            params->color.sig_peak = mp_trc_nom_peak(params->color.gamma);
+            params->color.hdr.max_luma = mp_trc_nom_peak(params->color.gamma) * MP_REF_WHITE;
         }
     }
 
     if (!mp_trc_is_hdr(params->color.gamma)) {
         // Some clips have leftover HDR metadata after conversion to SDR, so to
         // avoid blowing up the tone mapping code, strip/sanitize it
-        params->color.sig_peak = 1.0;
+        params->color.hdr = pl_hdr_metadata_empty;
     }
 
     if (params->chroma_location == MP_CHROMA_AUTO) {
@@ -1061,20 +1061,14 @@ struct mp_image *mp_image_from_av_frame(struct AVFrame *src)
     if (sd)
         dst->icc_profile = sd->buf;
 
-    // Get the content light metadata if available
-    sd = av_frame_get_side_data(src, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL);
-    if (sd) {
-        AVContentLightMetadata *clm = (AVContentLightMetadata *)sd->data;
-        dst->params.color.sig_peak = clm->MaxCLL / MP_REF_WHITE;
-    }
-
-    // Otherwise, try getting the mastering metadata if available
-    sd = av_frame_get_side_data(src, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
-    if (!dst->params.color.sig_peak && sd) {
-        AVMasteringDisplayMetadata *mdm = (AVMasteringDisplayMetadata *)sd->data;
-        if (mdm->has_luminance)
-            dst->params.color.sig_peak = av_q2d(mdm->max_luminance) / MP_REF_WHITE;
-    }
+    AVFrameSideData *mdm = av_frame_get_side_data(src, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
+    AVFrameSideData *clm = av_frame_get_side_data(src, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL);
+    AVFrameSideData *dhp = av_frame_get_side_data(src, AV_FRAME_DATA_DYNAMIC_HDR_PLUS);
+    pl_map_hdr_metadata(&dst->params.color.hdr, &(struct pl_av_hdr_metadata) {
+        .mdm = (void *)(mdm ? mdm->data : NULL),
+        .clm = (void *)(clm ? clm->data : NULL),
+        .dhp = (void *)(dhp ? dhp->data : NULL),
+    });
 
     sd = av_frame_get_side_data(src, AV_FRAME_DATA_A53_CC);
     if (sd)
@@ -1189,12 +1183,11 @@ struct AVFrame *mp_image_to_av_frame(struct mp_image *src)
         new_ref->icc_profile = NULL;
     }
 
-    if (src->params.color.sig_peak) {
-        AVContentLightMetadata *clm =
-            av_content_light_metadata_create_side_data(dst);
-        MP_HANDLE_OOM(clm);
-        clm->MaxCLL = src->params.color.sig_peak * MP_REF_WHITE;
-    }
+    pl_avframe_set_color(dst, (struct pl_color_space){
+        .primaries = mp_prim_to_pl(src->params.color.primaries),
+        .transfer = mp_trc_to_pl(src->params.color.gamma),
+        .hdr = src->params.color.hdr,
+    });
 
     {
         AVFrameSideData *sd = av_frame_new_side_data(dst,
diff --git a/video/out/gpu/video.c b/video/out/gpu/video.c
index 69be403933..1782132ea1 100644
--- a/video/out/gpu/video.c
+++ b/video/out/gpu/video.c
@@ -609,7 +609,7 @@ struct mp_colorspace gl_video_get_output_colorspace(struct gl_video *p)
     return (struct mp_colorspace) {
         .primaries = p->opts.target_prim,
         .gamma = p->opts.target_trc,
-        .sig_peak = p->opts.target_peak / MP_REF_WHITE,
+        .hdr.max_luma = p->opts.target_peak,
     };
 }
 
@@ -2565,8 +2565,8 @@ static void pass_colormanage(struct gl_video *p, struct mp_colorspace src,
         .primaries = p->opts.target_prim == MP_CSP_PRIM_AUTO ?
                      fbo_csp.primaries : p->opts.target_prim,
         .light = MP_CSP_LIGHT_DISPLAY,
-        .sig_peak = !p->opts.target_peak ?
-                    fbo_csp.sig_peak : p->opts.target_peak / MP_REF_WHITE,
+        .hdr.max_luma = !p->opts.target_peak ?
+                        fbo_csp.hdr.max_luma : p->opts.target_peak,
     };
 
     if (!p->colorspace_override_warned &&
@@ -2643,10 +2643,10 @@ static void pass_colormanage(struct gl_video *p, struct mp_colorspace src,
     // If there's no specific signal peak known for the output display, infer
     // it from the chosen transfer function. Also normalize the src peak, in
     // case it was unknown
-    if (!dst.sig_peak)
-        dst.sig_peak = mp_trc_nom_peak(dst.gamma);
-    if (!src.sig_peak)
-        src.sig_peak = mp_trc_nom_peak(src.gamma);
+    if (!dst.hdr.max_luma)
+        dst.hdr.max_luma = mp_trc_nom_peak(dst.gamma) * MP_REF_WHITE;
+    if (!src.hdr.max_luma)
+        src.hdr.max_luma = mp_trc_nom_peak(src.gamma) * MP_REF_WHITE;
 
     // Whitelist supported modes
     switch (p->opts.tone_map.curve) {
@@ -2679,7 +2679,7 @@ static void pass_colormanage(struct gl_video *p, struct mp_colorspace src,
 
     struct gl_tone_map_opts tone_map = p->opts.tone_map;
     bool detect_peak = tone_map.compute_peak >= 0 && mp_trc_is_hdr(src.gamma)
-                       && src.sig_peak > dst.sig_peak;
+                       && src.hdr.max_luma > dst.hdr.max_luma;
 
     if (detect_peak && !p->hdr_peak_ssbo) {
         struct {
diff --git a/video/out/gpu/video_shaders.c b/video/out/gpu/video_shaders.c
index 6c49967238..6c0e8a815e 100644
--- a/video/out/gpu/video_shaders.c
+++ b/video/out/gpu/video_shaders.c
@@ -848,7 +848,7 @@ void pass_color_map(struct gl_shader_cache *sc, bool is_linear,
     gl_sc_uniform_vec3(sc, "dst_luma", rgb2xyz[1]);
 
     bool need_ootf = src.light != dst.light;
-    if (src.light == MP_CSP_LIGHT_SCENE_HLG && src.sig_peak != dst.sig_peak)
+    if (src.light == MP_CSP_LIGHT_SCENE_HLG && src.hdr.max_luma != dst.hdr.max_luma)
         need_ootf = true;
 
     // All operations from here on require linear light as a starting point,
@@ -856,7 +856,7 @@ void pass_color_map(struct gl_shader_cache *sc, bool is_linear,
     // operations needs it
     bool need_linear = src.gamma != dst.gamma ||
                        src.primaries != dst.primaries ||
-                       src.sig_peak != dst.sig_peak ||
+                       src.hdr.max_luma != dst.hdr.max_luma ||
                        need_ootf;
 
     if (need_linear && !is_linear) {
@@ -869,11 +869,13 @@ void pass_color_map(struct gl_shader_cache *sc, bool is_linear,
     GLSLF("color.rgb *= vec3(%f);\n", mp_trc_nom_peak(src.gamma));
 
     if (need_ootf)
-        pass_ootf(sc, src.light, src.sig_peak);
+        pass_ootf(sc, src.light, src.hdr.max_luma / MP_REF_WHITE);
 
     // Tone map to prevent clipping due to excessive brightness
-    if (src.sig_peak > dst.sig_peak)
-        pass_tone_map(sc, src.sig_peak, dst.sig_peak, opts);
+    if (src.hdr.max_luma > dst.hdr.max_luma) {
+        pass_tone_map(sc, src.hdr.max_luma / MP_REF_WHITE,
+                      dst.hdr.max_luma / MP_REF_WHITE, opts);
+    }
 
     // Adapt to the right colorspace if necessary
     if (src.primaries != dst.primaries) {
@@ -892,18 +894,18 @@ void pass_color_map(struct gl_shader_cache *sc, bool is_linear,
                      color.rgb = mix(color.rgb, vec3(luma), coeff);
                  })
             GLSLF("float cmax = 1.0/%f * max(max(color.r, color.g), color.b);\n",
-                  dst.sig_peak);
+                  dst.hdr.max_luma / MP_REF_WHITE);
             GLSL(if (cmax > 1.0) color.rgb /= cmax;)
         }
     }
 
     if (need_ootf)
-        pass_inverse_ootf(sc, dst.light, dst.sig_peak);
+        pass_inverse_ootf(sc, dst.light, dst.hdr.max_luma / MP_REF_WHITE);
 
     // Post-scale the outgoing values from absolute scale to normalized.
     // For SDR, we normalize to the chosen signal peak. For HDR, we normalize
     // to the encoding range of the transfer function.
-    float dst_range = dst.sig_peak;
+    float dst_range = dst.hdr.max_luma / MP_REF_WHITE;
     if (mp_trc_is_hdr(dst.gamma))
         dst_range = mp_trc_nom_peak(dst.gamma);
 
diff --git a/video/out/vo_gpu_next.c b/video/out/vo_gpu_next.c
index 9db649e785..dac5eec3a3 100644
--- a/video/out/vo_gpu_next.c
+++ b/video/out/vo_gpu_next.c
@@ -439,30 +439,13 @@ static int plane_data_from_imgfmt(struct pl_plane_data out_data[4],
     return desc.num_planes;
 }
 
-static inline void *get_side_data(const struct mp_image *mpi,
-                                  enum AVFrameSideDataType type)
-{
-    for (int i = 0; i <mpi->num_ff_side_data; i++) {
-        if (mpi->ff_side_data[i].type == type)
-            return (void *) mpi->ff_side_data[i].buf->data;
-    }
-
-    return NULL;
-}
-
 static struct pl_color_space get_mpi_csp(struct vo *vo, struct mp_image *mpi)
 {
     struct pl_color_space csp = {
         .primaries = mp_prim_to_pl(mpi->params.color.primaries),
         .transfer = mp_trc_to_pl(mpi->params.color.gamma),
-        .hdr.max_luma = mpi->params.color.sig_peak * MP_REF_WHITE,
+        .hdr = mpi->params.color.hdr,
     };
-
-    pl_map_hdr_metadata(&csp.hdr, &(struct pl_av_hdr_metadata) {
-        .mdm = get_side_data(mpi, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA),
-        .clm = get_side_data(mpi, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL),
-        .dhp = get_side_data(mpi, AV_FRAME_DATA_DYNAMIC_HDR_PLUS),
-    });
     return csp;
 }
 
@@ -1346,7 +1329,7 @@ static void video_screenshot(struct vo *vo, struct voctrl_screenshot *args)
     args->res->params.color.primaries = mp_prim_from_pl(target.color.primaries);
     args->res->params.color.gamma = mp_trc_from_pl(target.color.transfer);
     args->res->params.color.levels = mp_levels_from_pl(target.repr.levels);
-    args->res->params.color.sig_peak = target.color.hdr.max_luma / MP_REF_WHITE;
+    args->res->params.color.hdr = target.color.hdr;
     if (args->scaled)
         args->res->params.p_w = args->res->params.p_h = 1;
 
diff --git a/video/zimg.c b/video/zimg.c
index be2953c58c..5ff300caab 100644
--- a/video/zimg.c
+++ b/video/zimg.c
@@ -548,8 +548,8 @@ static bool mp_zimg_state_init(struct mp_zimg_context *ctx,
         params.allow_approximate_gamma = 1;
 
     // leave at default for SDR, which means 100 cd/m^2 for zimg
-    if (ctx->dst.color.sig_peak > 0 && mp_trc_is_hdr(ctx->dst.color.gamma))
-        params.nominal_peak_luminance = ctx->dst.color.sig_peak * MP_REF_WHITE;
+    if (ctx->dst.color.hdr.max_luma > 0 && mp_trc_is_hdr(ctx->dst.color.gamma))
+        params.nominal_peak_luminance = ctx->dst.color.hdr.max_luma;
 
     st->graph = zimg_filter_graph_build(&src_fmt, &dst_fmt, &params);
     if (!st->graph) {