hevcdec: move SEI message parsing into a separate header

It doesn't depend on hevcdec anymore.
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

libavcodec/hevc_sei.c

@@ -23,35 +23,8 @@
  */
 
 #include "golomb_legacy.h"
-#include "hevcdec.h"
-
-enum HEVC_SEI_TYPE {
-    SEI_TYPE_BUFFERING_PERIOD                     = 0,
-    SEI_TYPE_PICTURE_TIMING                       = 1,
-    SEI_TYPE_PAN_SCAN_RECT                        = 2,
-    SEI_TYPE_FILLER_PAYLOAD                       = 3,
-    SEI_TYPE_USER_DATA_REGISTERED_ITU_T_T35       = 4,
-    SEI_TYPE_USER_DATA_UNREGISTERED               = 5,
-    SEI_TYPE_RECOVERY_POINT                       = 6,
-    SEI_TYPE_SCENE_INFO                           = 9,
-    SEI_TYPE_FULL_FRAME_SNAPSHOT                  = 15,
-    SEI_TYPE_PROGRESSIVE_REFINEMENT_SEGMENT_START = 16,
-    SEI_TYPE_PROGRESSIVE_REFINEMENT_SEGMENT_END   = 17,
-    SEI_TYPE_FILM_GRAIN_CHARACTERISTICS           = 19,
-    SEI_TYPE_POST_FILTER_HINT                     = 22,
-    SEI_TYPE_TONE_MAPPING_INFO                    = 23,
-    SEI_TYPE_FRAME_PACKING                        = 45,
-    SEI_TYPE_DISPLAY_ORIENTATION                  = 47,
-    SEI_TYPE_SOP_DESCRIPTION                      = 128,
-    SEI_TYPE_ACTIVE_PARAMETER_SETS                = 129,
-    SEI_TYPE_DECODING_UNIT_INFO                   = 130,
-    SEI_TYPE_TEMPORAL_LEVEL0_INDEX                = 131,
-    SEI_TYPE_DECODED_PICTURE_HASH                 = 132,
-    SEI_TYPE_SCALABLE_NESTING                     = 133,
-    SEI_TYPE_REGION_REFRESH_INFO                  = 134,
-    SEI_TYPE_MASTERING_DISPLAY_INFO               = 137,
-    SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO             = 144,
-};
+#include "hevc.h"
+#include "hevc_sei.h"
 
 static int decode_nal_sei_decoded_picture_hash(HEVCSEIPictureHash *s, GetBitContext *gb)
 {
@@ -119,9 +92,9 @@ static int decode_nal_sei_prefix(GetBitContext *gb, void *logctx, HEVCSEI *s,
     switch (type) {
     case 256:  // Mismatched value from HM 8.1
         return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb);
-    case SEI_TYPE_FRAME_PACKING:
+    case HEVC_SEI_TYPE_FRAME_PACKING:
         return decode_nal_sei_frame_packing_arrangement(&s->frame_packing, gb);
-    case SEI_TYPE_DISPLAY_ORIENTATION:
+    case HEVC_SEI_TYPE_DISPLAY_ORIENTATION:
         return decode_nal_sei_display_orientation(&s->display_orientation, gb);
     default:
         av_log(logctx, AV_LOG_DEBUG, "Skipped PREFIX SEI %d\n", type);
@@ -134,7 +107,7 @@ static int decode_nal_sei_suffix(GetBitContext *gb, void *logctx, HEVCSEI *s,
                                  int type, int size)
 {
     switch (type) {
-    case SEI_TYPE_DECODED_PICTURE_HASH:
+    case HEVC_SEI_TYPE_DECODED_PICTURE_HASH:
         return decode_nal_sei_decoded_picture_hash(&s->picture_hash, gb);
     default:
         av_log(logctx, AV_LOG_DEBUG, "Skipped SUFFIX SEI %d\n", type);

libavcodec/hevc_sei.h

+/*
+ * HEVC Supplementary Enhancement Information messages
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; 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 HEVCSEI {
+    HEVCSEIPictureHash picture_hash;
+    HEVCSEIFramePacking frame_packing;
+    HEVCSEIDisplayOrientation display_orientation;
+} HEVCSEI;
+
+int ff_hevc_decode_nal_sei(GetBitContext *gb, void *logctx, HEVCSEI *s,
+                           int type);
+
+#endif /* AVCODEC_HEVC_SEI_H */

libavcodec/hevcdec.h

@@ -27,7 +27,6 @@
 #include <stdint.h>
 
 #include "libavutil/buffer.h"
-#include "libavutil/md5.h"
 
 #include "avcodec.h"
 #include "bswapdsp.h"
@@ -36,6 +35,7 @@
 #include "h2645_parse.h"
 #include "hevc.h"
 #include "hevc_ps.h"
+#include "hevc_sei.h"
 #include "hevcdsp.h"
 #include "internal.h"
 #include "thread.h"
@@ -444,31 +444,6 @@ typedef struct HEVCLocalContext {
     int boundary_flags;
 } HEVCLocalContext;
 
-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 HEVCSEI {
-    HEVCSEIPictureHash picture_hash;
-    HEVCSEIFramePacking frame_packing;
-    HEVCSEIDisplayOrientation display_orientation;
-} HEVCSEI;
-
 typedef struct HEVCContext {
     const AVClass *c;  // needed by private avoptions
     AVCodecContext *avctx;
@@ -557,9 +532,6 @@ typedef struct HEVCContext {
     int nuh_layer_id;
 } HEVCContext;
 
-int ff_hevc_decode_nal_sei(GetBitContext *gb, void *logctx, HEVCSEI *s,
-                           int type);
-
 /**
  * Mark all frames in DPB as unused for reference.
  */