From: Mukunda Pramodh Kumar <mukunda.pramodh.kumar@xxxxxxxxx> Add helper functions to support logarithmic gamma mode Cc: Harry Wentland <harry.wentland@xxxxxxx> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Cc: Juha-Pekka Heikkila <juhapekka.heikkila@xxxxxxxxx> Cc: Uma Shankar <uma.shankar@xxxxxxxxx> Signed-off-by: Mukunda Pramodh Kumar <mukunda.pramodh.kumar@xxxxxxxxx> Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@xxxxxxxxx> --- tests/kms_color_helper.c | 127 +++++++++++++++++++++++++++++++++++++++ tests/kms_color_helper.h | 16 +++++ 2 files changed, 143 insertions(+) diff --git a/tests/kms_color_helper.c b/tests/kms_color_helper.c index c65b7a0f50..7ea8282df3 100644 --- a/tests/kms_color_helper.c +++ b/tests/kms_color_helper.c @@ -190,6 +190,33 @@ struct drm_color_lut *coeffs_to_lut(data_t *data, return lut; } +struct drm_color_lut *coeffs_to_logarithmic_lut(data_t *data, + const gamma_lut_t *gamma, + uint32_t color_depth, + int off) +{ + struct drm_color_lut *lut; + int i, lut_size = gamma->size; + /* This is the maximum value due to 16 bit precision in hardware. */ + uint32_t max_hw_value = (1 << 16) - 1; + unsigned int max_segment_value = 1 << 24; + + lut = malloc(sizeof(struct drm_color_lut) * lut_size); + + for (i = 0; i < lut_size; i++) { + double scaling_factor = (double)max_hw_value / (double)max_segment_value; + uint32_t r = MIN((gamma->coeffs[i].r * scaling_factor), max_hw_value); + uint32_t g = MIN((gamma->coeffs[i].g * scaling_factor), max_hw_value); + uint32_t b = MIN((gamma->coeffs[i].b * scaling_factor), max_hw_value); + + lut[i].red = r; + lut[i].green = g; + lut[i].blue = b; + } + + return lut; +} + void set_degamma(data_t *data, igt_pipe_t *pipe, const gamma_lut_t *gamma) @@ -203,6 +230,15 @@ void set_degamma(data_t *data, free(lut); } +void set_pipe_gamma(igt_pipe_t *pipe, + uint64_t value, + struct drm_color_lut *lut, + uint32_t size) +{ + igt_pipe_obj_set_prop_value(pipe, IGT_CRTC_GAMMA_MODE, value); + igt_pipe_obj_replace_prop_blob(pipe, IGT_CRTC_GAMMA_LUT, lut, size); +} + void set_gamma(data_t *data, igt_pipe_t *pipe, const gamma_lut_t *gamma) { @@ -241,6 +277,51 @@ void disable_prop(igt_pipe_t *pipe, enum igt_atomic_crtc_properties prop) igt_pipe_obj_replace_prop_blob(pipe, prop, NULL, 0); } +drmModePropertyPtr get_pipe_gamma_degamma_mode(igt_pipe_t *pipe, + enum igt_atomic_crtc_properties prop) +{ + igt_display_t *display = pipe->display; + uint32_t prop_id = pipe->props[prop]; + drmModePropertyPtr drmProp; + + igt_assert(prop_id); + + drmProp = drmModeGetProperty(display->drm_fd, prop_id); + + igt_assert(drmProp); + igt_assert(drmProp->count_enums); + + return drmProp; +} + +gamma_lut_t *pipe_create_linear_lut(segment_data_t *info) +{ + uint32_t segment, entry, index = 0; + double val; + int i = 0; + gamma_lut_t *gamma = alloc_lut(info->entries_count); + + igt_assert(gamma); + + gamma->size = info->entries_count; + for (segment = 0; segment < info->segment_count; segment++) { + uint32_t entry_count = info->segment_data[segment].count; + uint32_t start = (segment == 0) ? 0 : (1 << (segment - 1)); + uint32_t end = 1 << segment; + + for (entry = 0; entry < entry_count; entry++) { + val = (index == 0) ? /* First entry is Zero. */ + 0 : start + entry * + ((end - start) * 1.0 / entry_count); + + set_rgb(&gamma->coeffs[i++], val); + index++; + } + } + + return gamma; +} + drmModePropertyPtr get_plane_gamma_degamma_mode(igt_plane_t *plane, enum igt_atomic_plane_properties prop) { @@ -331,6 +412,7 @@ segment_data_t *get_segment_data(data_t *data, info->segment_data = malloc(sizeof(struct drm_color_lut_range) * info->segment_count); igt_assert(info->segment_data); + info->entries_count = 0; for (i = 0; i < info->segment_count; i++) { info->entries_count += lut_range[i].count; info->segment_data[i] = lut_range[i]; @@ -341,6 +423,51 @@ segment_data_t *get_segment_data(data_t *data, return info; } +void set_advance_gamma(data_t *data, igt_pipe_t *pipe, enum gamma_type type) +{ + igt_display_t *display = &data->display; + gamma_lut_t *gamma_log; + drmModePropertyPtr gamma_mode = NULL; + segment_data_t *segment_info = NULL; + struct drm_color_lut *lut = NULL; + int lut_size = 0; + + drmSetClientCap(data->drm_fd, DRM_CLIENT_CAP_ADVANCE_GAMMA_MODES, 1); + gamma_mode = get_pipe_gamma_degamma_mode(pipe, IGT_CRTC_GAMMA_MODE); + + for (int i = 0; i < gamma_mode->count_enums; i++) { + if (!strcmp(gamma_mode->enums[i].name, "logarithmic gamma")) { + segment_info = get_segment_data(data, + gamma_mode->enums[i].value, + gamma_mode->enums[i].name); + lut_size = sizeof(struct drm_color_lut) * + segment_info->entries_count; + if (type == LINEAR_GAMMA) { + gamma_log = pipe_create_linear_lut(segment_info); + lut = coeffs_to_logarithmic_lut(data, + gamma_log, + data->color_depth, + 0); + } else if (type == MAX_GAMMA) { + gamma_log = generate_table_max(segment_info->entries_count); + gamma_log->size = segment_info->entries_count; + lut = coeffs_to_lut(data, gamma_log, + data->color_depth, 0); + } + set_pipe_gamma(pipe, gamma_mode->enums[i].value, + lut, lut_size); + igt_display_commit2(display, display->is_atomic + ? COMMIT_ATOMIC : COMMIT_LEGACY); + break; + } + } + drmSetClientCap(data->drm_fd, DRM_CLIENT_CAP_ADVANCE_GAMMA_MODES, 0); + free(gamma_log); + free(lut); + clear_segment_data(segment_info); + drmModeFreeProperty(gamma_mode); +} + void set_plane_gamma(igt_plane_t *plane, char *mode, struct drm_color_lut_ext *lut, diff --git a/tests/kms_color_helper.h b/tests/kms_color_helper.h index 5a35dcaac1..c863874f0c 100644 --- a/tests/kms_color_helper.h +++ b/tests/kms_color_helper.h @@ -70,6 +70,11 @@ typedef struct { uint32_t entries_count; } segment_data_t; +enum gamma_type { + LINEAR_GAMMA, + MAX_GAMMA +}; + #define MIN(a, b) ((a) < (b) ? (a) : (b)) void paint_gradient_rectangles(data_t *data, @@ -89,6 +94,10 @@ struct drm_color_lut *coeffs_to_lut(data_t *data, const gamma_lut_t *gamma, uint32_t color_depth, int off); +struct drm_color_lut *coeffs_to_logarithmic_lut(data_t *data, + const gamma_lut_t *gamma, + uint32_t color_depth, + int off); void set_degamma(data_t *data, igt_pipe_t *pipe, const gamma_lut_t *gamma); @@ -98,12 +107,19 @@ void set_gamma(data_t *data, void set_ctm(igt_pipe_t *pipe, const double *coefficients); void disable_prop(igt_pipe_t *pipe, enum igt_atomic_crtc_properties prop); +drmModePropertyPtr get_pipe_gamma_degamma_mode(igt_pipe_t *pipe, + enum igt_atomic_crtc_properties + prop); drmModePropertyPtr get_plane_gamma_degamma_mode(igt_plane_t *plane, enum igt_atomic_plane_properties prop); void clear_segment_data(segment_data_t *info); +gamma_lut_t *pipe_create_linear_lut(segment_data_t *info); struct drm_color_lut_ext *create_linear_lut(segment_data_t *info); struct drm_color_lut_ext *create_max_lut(segment_data_t *info); segment_data_t *get_segment_data(data_t *data, uint64_t blob_id, char *mode); +void set_pipe_gamma(igt_pipe_t *pipe, uint64_t value, + struct drm_color_lut *lut, uint32_t size); +void set_advance_gamma(data_t *data, igt_pipe_t *pipe, enum gamma_type type); void set_plane_gamma(igt_plane_t *plane, char *mode, struct drm_color_lut_ext *lut, uint32_t size); void set_plane_degamma(igt_plane_t *plane, -- 2.32.0