avcodec/hevcdec: move SEI message parsing into a separate header

It doesn't depend on hevcdec anymore.

Reviewed-by: Hendrik Leppkes <h.leppkes@gmail.com>
Reviewed-by: Aaron Levinson <alevinsn@aracnet.com>
Signed-off-by: James Almer <jamrial@gmail.com>

1 files changed, 128 insertions, 0 deletions

diff --git a/libavcodec/hevc_sei.h b/libavcodec/hevc_sei.h
new file mode 100644
index 0000000000..5645e4f5de
--- /dev/null
+++ b/libavcodec/hevc_sei.h
@@ -0,0 +1,128 @@
+/*
+ * HEVC Supplementary Enhancement Information messages
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_HEVC_SEI_H
+#define AVCODEC_HEVC_SEI_H
+
+#include <stdint.h>
+
+#include "libavutil/md5.h"
+
+#include "get_bits.h"
+
+/**
+ * SEI message types
+ */
+typedef enum {
+    HEVC_SEI_TYPE_BUFFERING_PERIOD                     = 0,
+    HEVC_SEI_TYPE_PICTURE_TIMING                       = 1,
+    HEVC_SEI_TYPE_PAN_SCAN_RECT                        = 2,
+    HEVC_SEI_TYPE_FILLER_PAYLOAD                       = 3,
+    HEVC_SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35       = 4,
+    HEVC_SEI_TYPE_USER_DATA_UNREGISTERED               = 5,
+    HEVC_SEI_TYPE_RECOVERY_POINT                       = 6,
+    HEVC_SEI_TYPE_SCENE_INFO                           = 9,
+    HEVC_SEI_TYPE_FULL_FRAME_SNAPSHOT                  = 15,
+    HEVC_SEI_TYPE_PROGRESSIVE_REFINEMENT_SEGMENT_START = 16,
+    HEVC_SEI_TYPE_PROGRESSIVE_REFINEMENT_SEGMENT_END   = 17,
+    HEVC_SEI_TYPE_FILM_GRAIN_CHARACTERISTICS           = 19,
+    HEVC_SEI_TYPE_POST_FILTER_HINT                     = 22,
+    HEVC_SEI_TYPE_TONE_MAPPING_INFO                    = 23,
+    HEVC_SEI_TYPE_FRAME_PACKING                        = 45,
+    HEVC_SEI_TYPE_DISPLAY_ORIENTATION                  = 47,
+    HEVC_SEI_TYPE_SOP_DESCRIPTION                      = 128,
+    HEVC_SEI_TYPE_ACTIVE_PARAMETER_SETS                = 129,
+    HEVC_SEI_TYPE_DECODING_UNIT_INFO                   = 130,
+    HEVC_SEI_TYPE_TEMPORAL_LEVEL0_INDEX                = 131,
+    HEVC_SEI_TYPE_DECODED_PICTURE_HASH                 = 132,
+    HEVC_SEI_TYPE_SCALABLE_NESTING                     = 133,
+    HEVC_SEI_TYPE_REGION_REFRESH_INFO                  = 134,
+    HEVC_SEI_TYPE_MASTERING_DISPLAY_INFO               = 137,
+    HEVC_SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO             = 144,
+} HEVC_SEI_Type;
+
+typedef struct HEVCSEIPictureHash {
+    struct AVMD5 *md5_ctx;
+    uint8_t       md5[3][16];
+    uint8_t is_md5;
+} HEVCSEIPictureHash;
+
+typedef struct HEVCSEIFramePacking {
+    int present;
+    int arrangement_type;
+    int content_interpretation_type;
+    int quincunx_subsampling;
+} HEVCSEIFramePacking;
+
+typedef struct HEVCSEIDisplayOrientation {
+    int present;
+    int anticlockwise_rotation;
+    int hflip, vflip;
+} HEVCSEIDisplayOrientation;
+
+typedef struct HEVCSEIPictureTiming {
+    int picture_struct;
+} HEVCSEIPictureTiming;
+
+typedef struct HEVCSEIA53Caption {
+    int a53_caption_size;
+    uint8_t *a53_caption;
+} HEVCSEIA53Caption;
+
+typedef struct HEVCSEIMasteringDisplay {
+    int present;
+    uint16_t display_primaries[3][2];
+    uint16_t white_point[2];
+    uint32_t max_luminance;
+    uint32_t min_luminance;
+} HEVCSEIMasteringDisplay;
+
+typedef struct HEVCSEIContentLight {
+    int present;
+    uint16_t max_content_light_level;
+    uint16_t max_pic_average_light_level;
+} HEVCSEIContentLight;
+
+typedef struct HEVCSEIContext {
+    HEVCSEIPictureHash picture_hash;
+    HEVCSEIFramePacking frame_packing;
+    HEVCSEIDisplayOrientation display_orientation;
+    HEVCSEIPictureTiming picture_timing;
+    HEVCSEIA53Caption a53_caption;
+    HEVCSEIMasteringDisplay mastering_display;
+    HEVCSEIContentLight content_light;
+    int active_seq_parameter_set_id;
+} HEVCSEIContext;
+
+struct HEVCParamSets;
+
+int ff_hevc_decode_nal_sei(GetBitContext *gb, void *logctx, HEVCSEIContext *s,
+                           const struct HEVCParamSets *ps, int type);
+
+/**
+ * Reset SEI values that are stored on the Context.
+ * e.g. Caption data that was extracted during NAL
+ * parsing.
+ *
+ * @param s HEVCContext.
+ */
+void ff_hevc_reset_sei(HEVCSEIContext *s);
+
+#endif /* AVCODEC_HEVC_SEI_H */