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hevc.c File Reference
#include "libavutil/atomic.h"
#include "libavutil/attributes.h"
#include "libavutil/common.h"
#include "libavutil/display.h"
#include "libavutil/internal.h"
#include "libavutil/md5.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/stereo3d.h"
#include "bswapdsp.h"
#include "bytestream.h"
#include "cabac_functions.h"
#include "golomb.h"
#include "hevc.h"

Go to the source code of this file.

Macros

#define CTB(tab, x, y)   ((tab)[(y) * s->sps->ctb_width + (x)])
 
#define SET_SAO(elem, value)
 
#define SUBDIVIDE(x, y, idx)
 
#define POS(c_idx, x, y)
 
#define STARTCODE_TEST
 
#define OFFSET(x)   offsetof(HEVCContext, x)
 
#define PAR   (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
 

Functions

static void pic_arrays_free (HEVCContext *s)
 NOTE: Each function hls_foo correspond to the function foo in the specification (HLS stands for High Level Syntax).
 
static int pic_arrays_init (HEVCContext *s, const HEVCSPS *sps)
 
static void pred_weight_table (HEVCContext *s, GetBitContext *gb)
 
static int decode_lt_rps (HEVCContext *s, LongTermRPS *rps, GetBitContext *gb)
 
static int get_buffer_sao (HEVCContext *s, AVFrame *frame, const HEVCSPS *sps)
 
static int set_sps (HEVCContext *s, const HEVCSPS *sps)
 
static int hls_slice_header (HEVCContext *s)
 
static void hls_sao_param (HEVCContext *s, int rx, int ry)
 
static int hls_cross_component_pred (HEVCContext *s, int idx)
 
static int hls_transform_unit (HEVCContext *s, int x0, int y0, int xBase, int yBase, int cb_xBase, int cb_yBase, int log2_cb_size, int log2_trafo_size, int trafo_depth, int blk_idx, int cbf_luma, int *cbf_cb, int *cbf_cr)
 
static void set_deblocking_bypass (HEVCContext *s, int x0, int y0, int log2_cb_size)
 
static int hls_transform_tree (HEVCContext *s, int x0, int y0, int xBase, int yBase, int cb_xBase, int cb_yBase, int log2_cb_size, int log2_trafo_size, int trafo_depth, int blk_idx, const int *base_cbf_cb, const int *base_cbf_cr)
 
static int hls_pcm_sample (HEVCContext *s, int x0, int y0, int log2_cb_size)
 
static void luma_mc_uni (HEVCContext *s, uint8_t *dst, ptrdiff_t dststride, AVFrame *ref, const Mv *mv, int x_off, int y_off, int block_w, int block_h, int luma_weight, int luma_offset)
 8.5.3.2.2.1 Luma sample unidirectional interpolation process
 
static void luma_mc_bi (HEVCContext *s, uint8_t *dst, ptrdiff_t dststride, AVFrame *ref0, const Mv *mv0, int x_off, int y_off, int block_w, int block_h, AVFrame *ref1, const Mv *mv1, struct MvField *current_mv)
 8.5.3.2.2.1 Luma sample bidirectional interpolation process
 
static void chroma_mc_uni (HEVCContext *s, uint8_t *dst0, ptrdiff_t dststride, uint8_t *src0, ptrdiff_t srcstride, int reflist, int x_off, int y_off, int block_w, int block_h, struct MvField *current_mv, int chroma_weight, int chroma_offset)
 8.5.3.2.2.2 Chroma sample uniprediction interpolation process
 
static void chroma_mc_bi (HEVCContext *s, uint8_t *dst0, ptrdiff_t dststride, AVFrame *ref0, AVFrame *ref1, int x_off, int y_off, int block_w, int block_h, struct MvField *current_mv, int cidx)
 8.5.3.2.2.2 Chroma sample bidirectional interpolation process
 
static void hevc_await_progress (HEVCContext *s, HEVCFrame *ref, const Mv *mv, int y0, int height)
 
static void hls_prediction_unit (HEVCContext *s, int x0, int y0, int nPbW, int nPbH, int log2_cb_size, int partIdx, int idx)
 
static int luma_intra_pred_mode (HEVCContext *s, int x0, int y0, int pu_size, int prev_intra_luma_pred_flag)
 8.4.1
 
static av_always_inline void set_ct_depth (HEVCContext *s, int x0, int y0, int log2_cb_size, int ct_depth)
 
static void intra_prediction_unit (HEVCContext *s, int x0, int y0, int log2_cb_size)
 
static void intra_prediction_unit_default_value (HEVCContext *s, int x0, int y0, int log2_cb_size)
 
static int hls_coding_unit (HEVCContext *s, int x0, int y0, int log2_cb_size)
 
static int hls_coding_quadtree (HEVCContext *s, int x0, int y0, int log2_cb_size, int cb_depth)
 
static void hls_decode_neighbour (HEVCContext *s, int x_ctb, int y_ctb, int ctb_addr_ts)
 
static int hls_decode_entry (AVCodecContext *avctxt, void *isFilterThread)
 
static int hls_slice_data (HEVCContext *s)
 
static int hls_decode_entry_wpp (AVCodecContext *avctxt, void *input_ctb_row, int job, int self_id)
 
static int hls_slice_data_wpp (HEVCContext *s, const uint8_t *nal, int length)
 
static int hls_nal_unit (HEVCContext *s)
 
static int set_side_data (HEVCContext *s)
 
static int hevc_frame_start (HEVCContext *s)
 
static int decode_nal_unit (HEVCContext *s, const uint8_t *nal, int length)
 
int ff_hevc_extract_rbsp (HEVCContext *s, const uint8_t *src, int length, HEVCNAL *nal)
 
static int decode_nal_units (HEVCContext *s, const uint8_t *buf, int length)
 
static void print_md5 (void *log_ctx, int level, uint8_t md5[16])
 
static int verify_md5 (HEVCContext *s, AVFrame *frame)
 
static int hevc_decode_frame (AVCodecContext *avctx, void *data, int *got_output, AVPacket *avpkt)
 
static int hevc_ref_frame (HEVCContext *s, HEVCFrame *dst, HEVCFrame *src)
 
static av_cold int hevc_decode_free (AVCodecContext *avctx)
 
static av_cold int hevc_init_context (AVCodecContext *avctx)
 
static int hevc_update_thread_context (AVCodecContext *dst, const AVCodecContext *src)
 
static int hevc_decode_extradata (HEVCContext *s)
 
static av_cold int hevc_decode_init (AVCodecContext *avctx)
 
static av_cold int hevc_init_thread_copy (AVCodecContext *avctx)
 
static void hevc_decode_flush (AVCodecContext *avctx)
 

Variables

const uint8_t ff_hevc_pel_weight [65] = { [2] = 0, [4] = 1, [6] = 2, [8] = 3, [12] = 4, [16] = 5, [24] = 6, [32] = 7, [48] = 8, [64] = 9 }
 
static const uint8_t tab_mode_idx []
 
static const AVProfile profiles []
 
static const AVOption options []
 
static const AVClass hevc_decoder_class
 
AVCodec ff_hevc_decoder
 

Macro Definition Documentation

#define CTB (   tab,
  x,
  y 
)    ((tab)[(y) * s->sps->ctb_width + (x)])

Definition at line 761 of file hevc.c.

Referenced by hls_sao_param().

#define SET_SAO (   elem,
  value 
)
Value:
do { \
if (!sao_merge_up_flag && !sao_merge_left_flag) \
sao->elem = value; \
else if (sao_merge_left_flag) \
sao->elem = CTB(s->sao, rx-1, ry).elem; \
else if (sao_merge_up_flag) \
sao->elem = CTB(s->sao, rx, ry-1).elem; \
else \
sao->elem = 0; \
} while (0)

Definition at line 763 of file hevc.c.

Referenced by hls_sao_param().

#define SUBDIVIDE (   x,
  y,
  idx 
)
Value:
do { \
ret = hls_transform_tree(s, x, y, x0, y0, cb_xBase, cb_yBase, log2_cb_size, \
log2_trafo_size - 1, trafo_depth + 1, idx, \
cbf_cb, cbf_cr); \
if (ret < 0) \
return ret; \
} while (0)

Referenced by hls_transform_tree().

#define POS (   c_idx,
  x,
  y 
)
Value:
&s->frame->data[c_idx][((y) >> s->sps->vshift[c_idx]) * s->frame->linesize[c_idx] + \
(((x) >> s->sps->hshift[c_idx]) << s->sps->pixel_shift)]

Referenced by hls_prediction_unit().

#define STARTCODE_TEST
Value:
if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \
if (src[i + 2] != 3) { \
/* startcode, so we must be past the end */ \
length = i; \
} \
break; \
}
#define OFFSET (   x)    offsetof(HEVCContext, x)

Definition at line 3422 of file hevc.c.

#define PAR   (AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)

Definition at line 3423 of file hevc.c.

Function Documentation

static void pic_arrays_free ( HEVCContext *  s)
static

NOTE: Each function hls_foo correspond to the function foo in the specification (HLS stands for High Level Syntax).

Section 5.7

Definition at line 54 of file hevc.c.

Referenced by hevc_decode_free(), pic_arrays_init(), and set_sps().

static int pic_arrays_init ( HEVCContext *  s,
const HEVCSPS *  sps 
)
static

Definition at line 82 of file hevc.c.

Referenced by set_sps().

static void pred_weight_table ( HEVCContext *  s,
GetBitContext *  gb 
)
static

Definition at line 138 of file hevc.c.

Referenced by hls_slice_header().

static int decode_lt_rps ( HEVCContext *  s,
LongTermRPS *  rps,
GetBitContext *  gb 
)
static

Definition at line 227 of file hevc.c.

Referenced by hls_slice_header().

static int get_buffer_sao ( HEVCContext *  s,
AVFrame *  frame,
const HEVCSPS *  sps 
)
static

Definition at line 279 of file hevc.c.

Referenced by set_sps().

static int set_sps ( HEVCContext *  s,
const HEVCSPS *  sps 
)
static

Definition at line 297 of file hevc.c.

Referenced by hevc_update_thread_context(), and hls_slice_header().

static int hls_slice_header ( HEVCContext *  s)
static

Definition at line 365 of file hevc.c.

Referenced by decode_nal_unit().

static void hls_sao_param ( HEVCContext *  s,
int  rx,
int  ry 
)
static

Definition at line 775 of file hevc.c.

Referenced by hls_decode_entry(), and hls_decode_entry_wpp().

static int hls_cross_component_pred ( HEVCContext *  s,
int  idx 
)
static

Definition at line 849 of file hevc.c.

Referenced by hls_transform_unit().

static int hls_transform_unit ( HEVCContext *  s,
int  x0,
int  y0,
int  xBase,
int  yBase,
int  cb_xBase,
int  cb_yBase,
int  log2_cb_size,
int  log2_trafo_size,
int  trafo_depth,
int  blk_idx,
int  cbf_luma,
int *  cbf_cb,
int *  cbf_cr 
)
static

Definition at line 865 of file hevc.c.

Referenced by hls_transform_tree().

static void set_deblocking_bypass ( HEVCContext *  s,
int  x0,
int  y0,
int  log2_cb_size 
)
static

Definition at line 1072 of file hevc.c.

Referenced by hls_coding_unit(), and hls_transform_tree().

static int hls_transform_tree ( HEVCContext *  s,
int  x0,
int  y0,
int  xBase,
int  yBase,
int  cb_xBase,
int  cb_yBase,
int  log2_cb_size,
int  log2_trafo_size,
int  trafo_depth,
int  blk_idx,
const int *  base_cbf_cb,
const int *  base_cbf_cr 
)
static

Definition at line 1087 of file hevc.c.

Referenced by hls_coding_unit().

static int hls_pcm_sample ( HEVCContext *  s,
int  x0,
int  y0,
int  log2_cb_size 
)
static

Definition at line 1210 of file hevc.c.

Referenced by hls_coding_unit().

static void luma_mc_uni ( HEVCContext *  s,
uint8_t *  dst,
ptrdiff_t  dststride,
AVFrame *  ref,
const Mv *  mv,
int  x_off,
int  y_off,
int  block_w,
int  block_h,
int  luma_weight,
int  luma_offset 
)
static

8.5.3.2.2.1 Luma sample unidirectional interpolation process

Parameters
sHEVC decoding context
dsttarget buffer for block data at block position
dststridestride of the dst buffer
refreference picture buffer at origin (0, 0)
mvmotion vector (relative to block position) to get pixel data from
x_offhorizontal position of block from origin (0, 0)
y_offvertical position of block from origin (0, 0)
block_wwidth of block
block_hheight of block
luma_weightweighting factor applied to the luma prediction
luma_offsetadditive offset applied to the luma prediction value

Definition at line 1264 of file hevc.c.

Referenced by hls_prediction_unit().

static void luma_mc_bi ( HEVCContext *  s,
uint8_t *  dst,
ptrdiff_t  dststride,
AVFrame *  ref0,
const Mv *  mv0,
int  x_off,
int  y_off,
int  block_w,
int  block_h,
AVFrame *  ref1,
const Mv *  mv1,
struct MvField *  current_mv 
)
static

8.5.3.2.2.1 Luma sample bidirectional interpolation process

Parameters
sHEVC decoding context
dsttarget buffer for block data at block position
dststridestride of the dst buffer
ref0reference picture0 buffer at origin (0, 0)
mv0motion vector0 (relative to block position) to get pixel data from
x_offhorizontal position of block from origin (0, 0)
y_offvertical position of block from origin (0, 0)
block_wwidth of block
block_hheight of block
ref1reference picture1 buffer at origin (0, 0)
mv1motion vector1 (relative to block position) to get pixel data from
current_mvcurrent motion vector structure

Definition at line 1325 of file hevc.c.

Referenced by hls_prediction_unit().

static void chroma_mc_uni ( HEVCContext *  s,
uint8_t *  dst0,
ptrdiff_t  dststride,
uint8_t *  src0,
ptrdiff_t  srcstride,
int  reflist,
int  x_off,
int  y_off,
int  block_w,
int  block_h,
struct MvField *  current_mv,
int  chroma_weight,
int  chroma_offset 
)
static

8.5.3.2.2.2 Chroma sample uniprediction interpolation process

Parameters
sHEVC decoding context
dst1target buffer for block data at block position (U plane)
dst2target buffer for block data at block position (V plane)
dststridestride of the dst1 and dst2 buffers
refreference picture buffer at origin (0, 0)
mvmotion vector (relative to block position) to get pixel data from
x_offhorizontal position of block from origin (0, 0)
y_offvertical position of block from origin (0, 0)
block_wwidth of block
block_hheight of block
chroma_weightweighting factor applied to the chroma prediction
chroma_offsetadditive offset applied to the chroma prediction value

Definition at line 1417 of file hevc.c.

Referenced by hls_prediction_unit().

static void chroma_mc_bi ( HEVCContext *  s,
uint8_t *  dst0,
ptrdiff_t  dststride,
AVFrame *  ref0,
AVFrame *  ref1,
int  x_off,
int  y_off,
int  block_w,
int  block_h,
struct MvField *  current_mv,
int  cidx 
)
static

8.5.3.2.2.2 Chroma sample bidirectional interpolation process

Parameters
sHEVC decoding context
dsttarget buffer for block data at block position
dststridestride of the dst buffer
ref0reference picture0 buffer at origin (0, 0)
mv0motion vector0 (relative to block position) to get pixel data from
x_offhorizontal position of block from origin (0, 0)
y_offvertical position of block from origin (0, 0)
block_wwidth of block
block_hheight of block
ref1reference picture1 buffer at origin (0, 0)
mv1motion vector1 (relative to block position) to get pixel data from
current_mvcurrent motion vector structure
cidxchroma component(cb, cr)

Definition at line 1482 of file hevc.c.

Referenced by hls_prediction_unit().

static void hevc_await_progress ( HEVCContext *  s,
HEVCFrame *  ref,
const Mv *  mv,
int  y0,
int  height 
)
static

Definition at line 1573 of file hevc.c.

Referenced by hls_prediction_unit().

static void hls_prediction_unit ( HEVCContext *  s,
int  x0,
int  y0,
int  nPbW,
int  nPbH,
int  log2_cb_size,
int  partIdx,
int  idx 
)
static

Definition at line 1582 of file hevc.c.

Referenced by hls_coding_unit().

static int luma_intra_pred_mode ( HEVCContext *  s,
int  x0,
int  y0,
int  pu_size,
int  prev_intra_luma_pred_flag 
)
static

8.4.1

Definition at line 1764 of file hevc.c.

Referenced by intra_prediction_unit().

static av_always_inline void set_ct_depth ( HEVCContext *  s,
int  x0,
int  y0,
int  log2_cb_size,
int  ct_depth 
)
static

Definition at line 1844 of file hevc.c.

Referenced by hls_coding_unit().

static void intra_prediction_unit ( HEVCContext *  s,
int  x0,
int  y0,
int  log2_cb_size 
)
static

Definition at line 1861 of file hevc.c.

Referenced by hls_coding_unit().

static void intra_prediction_unit_default_value ( HEVCContext *  s,
int  x0,
int  y0,
int  log2_cb_size 
)
static

Definition at line 1929 of file hevc.c.

Referenced by hls_coding_unit().

static int hls_coding_unit ( HEVCContext *  s,
int  x0,
int  y0,
int  log2_cb_size 
)
static

Definition at line 1952 of file hevc.c.

Referenced by hls_coding_quadtree().

static int hls_coding_quadtree ( HEVCContext *  s,
int  x0,
int  y0,
int  log2_cb_size,
int  cb_depth 
)
static

Definition at line 2113 of file hevc.c.

Referenced by hls_decode_entry(), and hls_decode_entry_wpp().

static void hls_decode_neighbour ( HEVCContext *  s,
int  x_ctb,
int  y_ctb,
int  ctb_addr_ts 
)
static

Definition at line 2198 of file hevc.c.

Referenced by hls_decode_entry(), and hls_decode_entry_wpp().

static int hls_decode_entry ( AVCodecContext *  avctxt,
void *  isFilterThread 
)
static

Definition at line 2247 of file hevc.c.

Referenced by hls_slice_data().

static int hls_slice_data ( HEVCContext *  s)
static

Definition at line 2303 of file hevc.c.

Referenced by decode_nal_unit().

static int hls_decode_entry_wpp ( AVCodecContext *  avctxt,
void *  input_ctb_row,
int  job,
int  self_id 
)
static

Definition at line 2314 of file hevc.c.

Referenced by hls_slice_data_wpp().

static int hls_slice_data_wpp ( HEVCContext *  s,
const uint8_t *  nal,
int  length 
)
static

Definition at line 2389 of file hevc.c.

Referenced by decode_nal_unit().

static int hls_nal_unit ( HEVCContext *  s)
static
Returns
AVERROR_INVALIDDATA if the packet is not a valid NAL unit, 0 if the unit should be skipped, 1 otherwise

Definition at line 2470 of file hevc.c.

Referenced by decode_nal_unit(), and decode_nal_units().

static int set_side_data ( HEVCContext *  s)
static

Definition at line 2492 of file hevc.c.

Referenced by hevc_frame_start().

static int hevc_frame_start ( HEVCContext *  s)
static

Definition at line 2541 of file hevc.c.

Referenced by decode_nal_unit().

static int decode_nal_unit ( HEVCContext *  s,
const uint8_t *  nal,
int  length 
)
static

Definition at line 2597 of file hevc.c.

Referenced by decode_nal_units().

int ff_hevc_extract_rbsp ( HEVCContext *  s,
const uint8_t *  src,
int  length,
HEVCNAL *  nal 
)

Definition at line 2736 of file hevc.c.

Referenced by decode_nal_units(), and parse_nal_units().

static int decode_nal_units ( HEVCContext *  s,
const uint8_t *  buf,
int  length 
)
static

Definition at line 2843 of file hevc.c.

Referenced by hevc_decode_extradata(), and hevc_decode_frame().

static void print_md5 ( void *  log_ctx,
int  level,
uint8_t  md5[16] 
)
static

Definition at line 2956 of file hevc.c.

Referenced by verify_md5().

static int verify_md5 ( HEVCContext *  s,
AVFrame *  frame 
)
static

Definition at line 2963 of file hevc.c.

Referenced by hevc_decode_frame().

static int hevc_decode_frame ( AVCodecContext *  avctx,
void *  data,
int *  got_output,
AVPacket *  avpkt 
)
static

Definition at line 3029 of file hevc.c.

static int hevc_ref_frame ( HEVCContext *  s,
HEVCFrame *  dst,
HEVCFrame *  src 
)
static

Definition at line 3073 of file hevc.c.

Referenced by hevc_update_thread_context().

static av_cold int hevc_decode_free ( AVCodecContext *  avctx)
static

Definition at line 3107 of file hevc.c.

Referenced by hevc_decode_init(), and hevc_init_context().

static av_cold int hevc_init_context ( AVCodecContext *  avctx)
static

Definition at line 3168 of file hevc.c.

Referenced by hevc_decode_init(), hevc_init_thread_copy(), and hevc_update_thread_context().

static int hevc_update_thread_context ( AVCodecContext *  dst,
const AVCodecContext *  src 
)
static

Definition at line 3218 of file hevc.c.

static int hevc_decode_extradata ( HEVCContext *  s)
static

Definition at line 3300 of file hevc.c.

Referenced by hevc_decode_init().

static av_cold int hevc_decode_init ( AVCodecContext *  avctx)
static

Definition at line 3364 of file hevc.c.

static av_cold int hevc_init_thread_copy ( AVCodecContext *  avctx)
static

Definition at line 3401 of file hevc.c.

static void hevc_decode_flush ( AVCodecContext *  avctx)
static

Definition at line 3415 of file hevc.c.

Variable Documentation

const uint8_t ff_hevc_pel_weight[65] = { [2] = 0, [4] = 1, [6] = 2, [8] = 3, [12] = 4, [16] = 5, [24] = 6, [32] = 7, [48] = 8, [64] = 9 }

Definition at line 42 of file hevc.c.

Referenced by chroma_mc_bi(), chroma_mc_uni(), luma_mc_bi(), and luma_mc_uni().

const uint8_t tab_mode_idx[]
static
Initial value:
= {
0, 1, 2, 2, 2, 2, 3, 5, 7, 8, 10, 12, 13, 15, 17, 18, 19, 20,
21, 22, 23, 23, 24, 24, 25, 25, 26, 27, 27, 28, 28, 29, 29, 30, 31}

Definition at line 1857 of file hevc.c.

Referenced by intra_prediction_unit().

const AVProfile profiles[]
static
Initial value:
= {
{ FF_PROFILE_HEVC_MAIN, "Main" },
{ FF_PROFILE_HEVC_MAIN_10, "Main 10" },
{ FF_PROFILE_HEVC_MAIN_STILL_PICTURE, "Main Still Picture" },
{ FF_PROFILE_HEVC_REXT, "Rext" },
{ FF_PROFILE_UNKNOWN },
}

Definition at line 3425 of file hevc.c.

const AVOption options[]
static
Initial value:
= {
{ "apply_defdispwin", "Apply default display window from VUI", OFFSET(apply_defdispwin),
AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, PAR },
{ "strict-displaywin", "stricly apply default display window size", OFFSET(apply_defdispwin),
AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, PAR },
{ NULL },
}

Definition at line 3433 of file hevc.c.

const AVClass hevc_decoder_class
static
Initial value:
= {
.class_name = "HEVC decoder",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
}

Definition at line 3441 of file hevc.c.

AVCodec ff_hevc_decoder
Initial value:
= {
.name = "hevc",
.long_name = NULL_IF_CONFIG_SMALL("HEVC (High Efficiency Video Coding)"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_HEVC,
.priv_data_size = sizeof(HEVCContext),
.priv_class = &hevc_decoder_class,
.init = hevc_decode_init,
.close = hevc_decode_free,
.decode = hevc_decode_frame,
.flush = hevc_decode_flush,
.update_thread_context = hevc_update_thread_context,
.init_thread_copy = hevc_init_thread_copy,
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY |
CODEC_CAP_SLICE_THREADS | CODEC_CAP_FRAME_THREADS,
.profiles = NULL_IF_CONFIG_SMALL(profiles),
}

Definition at line 3448 of file hevc.c.

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