[FFmpeg-devel] [PATCH] Support HDR dynamic metadata (HDR10+) in HEVC decoder.
Mohammad Izadi
moh.izadi at gmail.com
Tue Jan 22 23:52:59 EET 2019
---
libavcodec/hevc_sei.c | 216 ++++++++++++++++++++++++++++++++++++++++--
libavcodec/hevc_sei.h | 6 ++
libavcodec/hevcdec.c | 21 ++++
3 files changed, 237 insertions(+), 6 deletions(-)
diff --git a/libavcodec/hevc_sei.c b/libavcodec/hevc_sei.c
index c59bd4321e..15cd956e85 100644
--- a/libavcodec/hevc_sei.c
+++ b/libavcodec/hevc_sei.c
@@ -25,6 +25,7 @@
#include "golomb.h"
#include "hevc_ps.h"
#include "hevc_sei.h"
+#include "libavutil/hdr_dynamic_metadata.h"
static int decode_nal_sei_decoded_picture_hash(HEVCSEIPictureHash *s, GetBitContext *gb)
{
@@ -206,10 +207,184 @@ static int decode_registered_user_data_closed_caption(HEVCSEIA53Caption *s, GetB
return 0;
}
-static int decode_nal_sei_user_data_registered_itu_t_t35(HEVCSEI *s, GetBitContext *gb,
+static int decode_registered_user_data_dynamic_hdr_plus(AVDynamicHDRPlus *s, GetBitContext *gb,
+ void *logctx, int size)
+{
+ const int luminance_den = 10000;
+ const int peak_luminance_den = 15;
+ const int rgb_den = 100000;
+ const int fraction_pixel_den = 1000;
+ const int knee_point_den = 4095;
+ const int bezier_anchor_den = 1023;
+ const int saturation_weight_den = 8;
+
+ int w, i, j;
+
+ if (get_bits_left(gb) < size * 8)
+ return AVERROR_INVALIDDATA;
+
+ if (get_bits_left(gb) < 2)
+ return AVERROR_INVALIDDATA;
+ s->num_windows = get_bits(gb, 2);
+ if (s->num_windows < 1 || s->num_windows > 3) {
+ av_log(logctx, AV_LOG_ERROR, "num_windows=%d, must be in [1, 3]\n",
+ s->num_windows);
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (get_bits_left(gb) < ((19 * 8 + 1) * (s->num_windows - 1)))
+ return AVERROR_INVALIDDATA;
+
+ for (w = 1; w < s->num_windows; w++) {
+ s->params[w].window_upper_left_corner_x.num = get_bits(gb, 16);
+ s->params[w].window_upper_left_corner_y.num = get_bits(gb, 16);
+ s->params[w].window_lower_right_corner_x.num = get_bits(gb, 16);
+ s->params[w].window_lower_right_corner_y.num = get_bits(gb, 16);
+ // The corners are set to absolute coordinates here. They should be
+ // converted to the relative coordinates (in [0, 1]) in the decoder.
+ s->params[w].window_upper_left_corner_x.den = 1;
+ s->params[w].window_upper_left_corner_y.den = 1;
+ s->params[w].window_lower_right_corner_x.den = 1;
+ s->params[w].window_lower_right_corner_y.den = 1;
+
+ s->params[w].center_of_ellipse_x = get_bits(gb, 16);
+ s->params[w].center_of_ellipse_y = get_bits(gb, 16);
+ s->params[w].rotation_angle = get_bits(gb, 8);
+ s->params[w].semimajor_axis_internal_ellipse = get_bits(gb, 16);
+ s->params[w].semimajor_axis_external_ellipse = get_bits(gb, 16);
+ s->params[w].semiminor_axis_external_ellipse = get_bits(gb, 16);
+ s->params[w].overlap_process_option = get_bits(gb, 1);
+ }
+
+ if (get_bits_left(gb) < 28)
+ return AVERROR(EINVAL);
+
+ s->targeted_system_display_maximum_luminance.num = get_bits(gb, 27);
+ s->targeted_system_display_maximum_luminance.den = luminance_den;
+ s->targeted_system_display_actual_peak_luminance_flag = get_bits(gb, 1);
+
+ if (s->targeted_system_display_actual_peak_luminance_flag) {
+ int rows, cols;
+ if (get_bits_left(gb) < 10)
+ return AVERROR(EINVAL);
+ rows = get_bits(gb, 5);
+ cols = get_bits(gb, 5);
+ if (((rows < 2) || (rows > 25)) || ((cols < 2) || (cols > 25))) {
+ av_log(logctx, AV_LOG_ERROR, "num_rows=%d, num_cols=%d, they must [2, 25] for targeted_system_display_actual_peak_luminance\n", rows, cols);
+ return AVERROR_INVALIDDATA;
+ }
+ s->num_rows_targeted_system_display_actual_peak_luminance = rows;
+ s->num_cols_targeted_system_display_actual_peak_luminance = cols;
+
+ if (get_bits_left(gb) < (rows * cols * 4))
+ return AVERROR(EINVAL);
+
+ for (i = 0; i < rows; i++) {
+ for (j = 0; j < cols; j++) {
+ s->targeted_system_display_actual_peak_luminance[i][j].num = get_bits(gb, 4);
+ s->targeted_system_display_actual_peak_luminance[i][j].den = peak_luminance_den;
+ }
+ }
+ }
+ for (w = 0; w < s->num_windows; w++) {
+ if (get_bits_left(gb) < (3 * 17 + 17 + 4))
+ return AVERROR(EINVAL);
+ for (i = 0; i < 3; i++) {
+ s->params[w].maxscl[i].num = get_bits(gb, 17);
+ s->params[w].maxscl[i].den = rgb_den;
+ }
+ s->params[w].average_maxrgb.num = get_bits(gb, 17);
+ s->params[w].average_maxrgb.den = rgb_den;
+ s->params[w].num_distribution_maxrgb_percentiles = get_bits(gb, 4);
+
+ if (get_bits_left(gb) <
+ (s->params[w].num_distribution_maxrgb_percentiles * 24))
+ return AVERROR(EINVAL);
+ for (i = 0; i < s->params[w].num_distribution_maxrgb_percentiles; i++) {
+ s->params[w].distribution_maxrgb[i].percentage = get_bits(gb, 7);
+ s->params[w].distribution_maxrgb[i].percentile.num = get_bits(gb, 17);
+ s->params[w].distribution_maxrgb[i].percentile.den = rgb_den;
+ }
+
+ if (get_bits_left(gb) < 10)
+ return AVERROR(EINVAL);
+ s->params[w].fraction_bright_pixels.num = get_bits(gb, 10);
+ s->params[w].fraction_bright_pixels.den = fraction_pixel_den;
+ }
+ if (get_bits_left(gb) < 1)
+ return AVERROR(EINVAL);
+ s->mastering_display_actual_peak_luminance_flag = get_bits(gb, 1);
+ if (s->mastering_display_actual_peak_luminance_flag) {
+ int rows, cols;
+ if (get_bits_left(gb) < 10)
+ return AVERROR(EINVAL);
+ rows = get_bits(gb, 5);
+ cols = get_bits(gb, 5);
+ if (((rows < 2) || (rows > 25)) || ((cols < 2) || (cols > 25))) {
+ av_log(logctx, AV_LOG_ERROR, "num_rows=%d, num_cols=%d, they must be in [2, 25] for mastering_display_actual_peak_luminance\n", rows, cols);
+ return AVERROR_INVALIDDATA;
+ }
+ s->num_rows_mastering_display_actual_peak_luminance = rows;
+ s->num_cols_mastering_display_actual_peak_luminance = cols;
+
+ if (get_bits_left(gb) < (rows * cols * 4))
+ return AVERROR(EINVAL);
+
+ for (i = 0; i < rows; i++) {
+ for (j = 0; j < cols; j++) {
+ s->mastering_display_actual_peak_luminance[i][j].num = get_bits(gb, 4);
+ s->mastering_display_actual_peak_luminance[i][j].den = peak_luminance_den;
+ }
+ }
+ }
+
+ for (w = 0; w < s->num_windows; w++) {
+ if (get_bits_left(gb) < 1)
+ return AVERROR(EINVAL);
+
+ s->params[w].tone_mapping_flag = get_bits(gb, 1);
+ if (s->params[w].tone_mapping_flag) {
+ if (get_bits_left(gb) < 28)
+ return AVERROR(EINVAL);
+ s->params[w].knee_point_x.num = get_bits(gb, 12);
+ s->params[w].knee_point_x.den = knee_point_den;
+ s->params[w].knee_point_y.num = get_bits(gb, 12);
+ s->params[w].knee_point_y.den = knee_point_den;
+ s->params[w].num_bezier_curve_anchors = get_bits(gb, 4);
+
+ if (get_bits_left(gb) < (s->params[w].num_bezier_curve_anchors * 10))
+ return AVERROR(EINVAL);
+
+ for (i = 0; i < s->params[w].num_bezier_curve_anchors; i++) {
+ s->params[w].bezier_curve_anchors[i].num = get_bits(gb, 10);
+ s->params[w].bezier_curve_anchors[i].den = bezier_anchor_den;
+ }
+ }
+
+ if (get_bits_left(gb) < 1)
+ return AVERROR(EINVAL);
+
+ s->params[w].color_saturation_mapping_flag = get_bits(gb, 1);
+ if (s->params[w].color_saturation_mapping_flag) {
+ if (get_bits_left(gb) < 6)
+ return AVERROR(EINVAL);
+ s->params[w].color_saturation_weight.num = get_bits(gb, 6);
+ s->params[w].color_saturation_weight.den = saturation_weight_den;
+ }
+ }
+
+ skip_bits(gb, get_bits_left(gb));
+
+ return 0;
+}
+
+static int decode_nal_sei_user_data_registered_itu_t_t35(HEVCSEI *s,
+ GetBitContext *gb,
+ void *logctx,
int size)
{
- uint32_t country_code;
+ uint8_t country_code;
+ uint16_t provider_code;
uint32_t user_identifier;
if (size < 7)
@@ -222,11 +397,39 @@ static int decode_nal_sei_user_data_registered_itu_t_t35(HEVCSEI *s, GetBitConte
size--;
}
- skip_bits(gb, 8);
- skip_bits(gb, 8);
-
+ provider_code = get_bits(gb, 16);
user_identifier = get_bits_long(gb, 32);
+ // Check for dynamic metadata - HDR10+(SMPTE 2094-40).
+ if ((provider_code == 0x003C) &&
+ ((user_identifier & 0xFFFFFF00) == 0x00010400)) {
+ int err;
+ size_t size;
+ AVDynamicHDRPlus *hdr_plus = av_dynamic_hdr_plus_alloc(&size);
+ if (!hdr_plus)
+ return AVERROR(ENOMEM);
+
+ if (s->dynamic_hdr_plus.info)
+ av_buffer_unref(&s->dynamic_hdr_plus.info);
+
+ s->dynamic_hdr_plus.info =
+ av_buffer_create((uint8_t*)hdr_plus, size,
+ av_buffer_default_free, NULL, 0);
+ if (!s->dynamic_hdr_plus.info) {
+ av_freep(&hdr_plus);
+ return AVERROR(ENOMEM);
+ }
+
+ hdr_plus->itu_t_t35_country_code = country_code;
+ hdr_plus->application_version = (uint8_t)((user_identifier & 0x000000FF));
+
+ err = decode_registered_user_data_dynamic_hdr_plus(hdr_plus, gb, logctx, size);
+ if (!err)
+ av_buffer_unref(&s->dynamic_hdr_plus.info);
+
+ return err;
+ }
+
switch (user_identifier) {
case MKBETAG('G', 'A', '9', '4'):
return decode_registered_user_data_closed_caption(&s->a53_caption, gb, size);
@@ -292,7 +495,7 @@ static int decode_nal_sei_prefix(GetBitContext *gb, void *logctx, HEVCSEI *s,
case HEVC_SEI_TYPE_ACTIVE_PARAMETER_SETS:
return decode_nal_sei_active_parameter_sets(s, gb, logctx);
case HEVC_SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35:
- return decode_nal_sei_user_data_registered_itu_t_t35(s, gb, size);
+ return decode_nal_sei_user_data_registered_itu_t_t35(s, gb, logctx, size);
case HEVC_SEI_TYPE_ALTERNATIVE_TRANSFER_CHARACTERISTICS:
return decode_nal_sei_alternative_transfer(&s->alternative_transfer, gb);
default:
@@ -365,4 +568,5 @@ void ff_hevc_reset_sei(HEVCSEI *s)
{
s->a53_caption.a53_caption_size = 0;
av_freep(&s->a53_caption.a53_caption);
+ av_buffer_unref(&s->dynamic_hdr_plus.info);
}
diff --git a/libavcodec/hevc_sei.h b/libavcodec/hevc_sei.h
index 2fec00ace0..80c56b10bb 100644
--- a/libavcodec/hevc_sei.h
+++ b/libavcodec/hevc_sei.h
@@ -23,6 +23,7 @@
#include <stdint.h>
+#include "libavutil/buffer.h"
#include "get_bits.h"
/**
@@ -94,6 +95,10 @@ typedef struct HEVCSEIMasteringDisplay {
uint32_t min_luminance;
} HEVCSEIMasteringDisplay;
+typedef struct HEVCSEIDynamicHDRPlus{
+ AVBufferRef *info;
+} HEVCSEIDynamicHDRPlus;
+
typedef struct HEVCSEIContentLight {
int present;
uint16_t max_content_light_level;
@@ -109,6 +114,7 @@ typedef struct HEVCSEI {
HEVCSEIPictureHash picture_hash;
HEVCSEIFramePacking frame_packing;
HEVCSEIDisplayOrientation display_orientation;
+ HEVCSEIDynamicHDRPlus dynamic_hdr_plus;
HEVCSEIPictureTiming picture_timing;
HEVCSEIA53Caption a53_caption;
HEVCSEIMasteringDisplay mastering_display;
diff --git a/libavcodec/hevcdec.c b/libavcodec/hevcdec.c
index 10bf2563c0..c1f5e08ab2 100644
--- a/libavcodec/hevcdec.c
+++ b/libavcodec/hevcdec.c
@@ -28,6 +28,7 @@
#include "libavutil/display.h"
#include "libavutil/internal.h"
#include "libavutil/mastering_display_metadata.h"
+#include "libavutil/hdr_dynamic_metadata.h"
#include "libavutil/md5.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
@@ -2769,6 +2770,26 @@ static int set_side_data(HEVCContext *s)
s->avctx->color_trc = out->color_trc = s->sei.alternative_transfer.preferred_transfer_characteristics;
}
+ if (s->sei.dynamic_hdr_plus.info){
+ AVDynamicHDRPlus *metadata = (AVDynamicHDRPlus*)s->sei.dynamic_hdr_plus.info->data;
+ // Convert coordinates to relative coordinate in [0, 1].
+ metadata->params[0].window_upper_left_corner_x.num = 0;
+ metadata->params[0].window_upper_left_corner_y.num = 0;
+ metadata->params[0].window_lower_right_corner_x.num = out->width - 1;
+ metadata->params[0].window_lower_right_corner_y.num = out->height - 1;
+ for (int w = 0; w < metadata->num_windows; w++) {
+ metadata->params[w].window_upper_left_corner_x.den = out->width - 1;
+ metadata->params[w].window_upper_left_corner_y.den = out->height - 1;
+ metadata->params[w].window_lower_right_corner_x.den = out->width - 1;
+ metadata->params[w].window_lower_right_corner_y.den = out->height - 1;
+ }
+ AVBufferRef *info_ref = av_buffer_ref(s->sei.dynamic_hdr_plus.info);
+ if (!info_ref)
+ return AVERROR(ENOMEM);
+
+ av_frame_new_side_data_from_buf(out, AV_FRAME_DATA_DYNAMIC_HDR_PLUS, info_ref);
+ }
+
return 0;
}
--
2.20.1.321.g9e740568ce-goog
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