29 const char *
name, uint32_t *write_to,
30 uint32_t range_min, uint32_t range_max)
32 uint32_t zeroes, bits_value,
value;
42 "%s: bitstream ended.\n", name);
56 "%s: bitstream ended.\n", name);
61 value = bits_value + (UINT32_C(1) << zeroes) - 1;
70 k =
FFMIN(zeroes - 32, 32);
71 for (i = 0; i < k; i++)
81 for (i = 0; i < zeroes; i++)
86 for (j = 0; j < zeroes; j++)
87 bits[i++] = (bits_value >> (zeroes - j - 1) & 1) ?
'1' :
'0';
95 if (value < range_min || value > range_max) {
97 "%"PRIu32
", but must be in [%"PRIu32
",%"PRIu32
"].\n",
98 name, value, range_min, range_max);
108 uint32_t range_min, uint32_t range_max)
111 int position, zeroes;
113 if (value < range_min || value > range_max) {
115 "%"PRIu32
", but must be in [%"PRIu32
",%"PRIu32
"].\n",
116 name, value, range_min, range_max);
128 v = value - (1
U << zeroes) + 1;
138 for (j = 0; j < zeroes; j++)
141 for (j = 0; j < zeroes; j++)
142 bits[i++] = (v >> (zeroes - j - 1) & 1) ?
'1' :
'0';
152 const char *
name, uint64_t *write_to)
155 int position, err,
i;
161 for (i = 0; i < 8; i++) {
162 int subscript[2] = { 1, i };
169 value |= (uint64_t)(byte & 0x7f) << (i * 7);
174 if (value > UINT32_MAX)
187 int position, err,
len,
i;
190 len = (
av_log2(value) + 7) / 7;
195 for (i = 0; i <
len; i++) {
196 int subscript[2] = { 1, i };
198 byte = value >> (7 *
i) & 0x7f;
215 uint32_t n,
const char *
name,
216 const int *subscripts, uint32_t *write_to)
218 uint32_t m, v, extra_bit,
value;
231 "%s: bitstream ended.\n", name);
244 value = (v << 1) - m + extra_bit;
250 for (i = 0; i < w - 1; i++)
251 bits[i] = (v >> i & 1) ?
'1' :
'0';
253 bits[i++] = extra_bit ?
'1' :
'0';
257 name, subscripts, bits, value);
265 uint32_t n,
const char *
name,
266 const int *subscripts, uint32_t
value)
268 uint32_t
w, m, v, extra_bit;
273 "%"PRIu32
", but must be in [0,%"PRIu32
"].\n",
291 v = m + ((value - m) >> 1);
292 extra_bit = (value - m) & 1;
300 for (i = 0; i < w - 1; i++)
301 bits[i] = (v >> i & 1) ?
'1' :
'0';
303 bits[i++] = extra_bit ?
'1' :
'0';
307 name, subscripts, bits, value);
314 uint32_t range_min, uint32_t range_max,
315 const char *
name, uint32_t *write_to)
321 av_assert0(range_min <= range_max && range_max - range_min <
sizeof(bits) - 1);
325 for (i = 0, value = range_min; value < range_max;) {
328 "%s: bitstream ended.\n", name);
343 name,
NULL, bits, value);
351 uint32_t range_min, uint32_t range_max,
356 av_assert0(range_min <= range_max && range_max - range_min < 32);
357 if (value < range_min || value > range_max) {
359 "%"PRIu32
", but must be in [%"PRIu32
",%"PRIu32
"].\n",
360 name, value, range_min, range_max);
364 if (value == range_max)
365 len = range_max - range_min;
367 len = value - range_min + 1;
374 for (i = 0; i <
len; i++) {
375 if (range_min + i == value)
382 name,
NULL, bits, value);
386 put_bits(pbc, len, (1 << len) - 1 - (value != range_max));
392 uint32_t range_max,
const char *
name,
393 const int *subscripts, uint32_t *write_to)
397 uint32_t max_len,
len, range_offset, range_bits;
403 max_len =
av_log2(range_max - 1) - 3;
406 "subexp_more_bits", &len);
411 range_bits = 2 +
len;
412 range_offset = 1 << range_bits;
420 "subexp_bits",
NULL, &value,
427 "subexp_final_bits",
NULL, &value);
431 value += range_offset;
435 name, subscripts,
"", value);
442 uint32_t range_max,
const char *
name,
443 const int *subscripts, uint32_t
value)
446 uint32_t max_len,
len, range_offset, range_bits;
448 if (value > range_max) {
450 "%"PRIu32
", but must be in [0,%"PRIu32
"].\n",
451 name, value, range_max);
459 max_len =
av_log2(range_max - 1) - 3;
467 len = range_bits - 2;
474 range_offset = 1 << range_bits;
478 "subexp_more_bits", len);
485 value - range_offset,
492 "subexp_final_bits",
NULL,
493 value - range_offset);
500 name, subscripts,
"", value);
509 for (k = 0; (blksize << k) < target; k++);
514 unsigned int a,
unsigned int b)
516 unsigned int diff, m;
521 diff = (diff & (m - 1)) - (diff & m);
537 #define HEADER(name) do { \ 538 ff_cbs_trace_header(ctx, name); \ 541 #define CHECK(call) do { \ 547 #define FUNC_NAME(rw, codec, name) cbs_ ## codec ## _ ## rw ## _ ## name 548 #define FUNC_AV1(rw, name) FUNC_NAME(rw, av1, name) 549 #define FUNC(name) FUNC_AV1(READWRITE, name) 551 #define SUBSCRIPTS(subs, ...) (subs > 0 ? ((int[subs + 1]){ subs, __VA_ARGS__ }) : NULL) 553 #define fb(width, name) \ 554 xf(width, name, current->name, 0, MAX_UINT_BITS(width), 0, ) 555 #define fc(width, name, range_min, range_max) \ 556 xf(width, name, current->name, range_min, range_max, 0, ) 557 #define flag(name) fb(1, name) 558 #define su(width, name) \ 559 xsu(width, name, current->name, 0, ) 561 #define fbs(width, name, subs, ...) \ 562 xf(width, name, current->name, 0, MAX_UINT_BITS(width), subs, __VA_ARGS__) 563 #define fcs(width, name, range_min, range_max, subs, ...) \ 564 xf(width, name, current->name, range_min, range_max, subs, __VA_ARGS__) 565 #define flags(name, subs, ...) \ 566 xf(1, name, current->name, 0, 1, subs, __VA_ARGS__) 567 #define sus(width, name, subs, ...) \ 568 xsu(width, name, current->name, subs, __VA_ARGS__) 570 #define fixed(width, name, value) do { \ 571 av_unused uint32_t fixed_value = value; \ 572 xf(width, name, fixed_value, value, value, 0, ); \ 577 #define READWRITE read 578 #define RWContext GetBitContext 580 #define xf(width, name, var, range_min, range_max, subs, ...) do { \ 582 CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, \ 583 SUBSCRIPTS(subs, __VA_ARGS__), \ 584 &value, range_min, range_max)); \ 588 #define xsu(width, name, var, subs, ...) do { \ 590 CHECK(ff_cbs_read_signed(ctx, rw, width, #name, \ 591 SUBSCRIPTS(subs, __VA_ARGS__), &value, \ 592 MIN_INT_BITS(width), \ 593 MAX_INT_BITS(width))); \ 597 #define uvlc(name, range_min, range_max) do { \ 599 CHECK(cbs_av1_read_uvlc(ctx, rw, #name, \ 600 &value, range_min, range_max)); \ 601 current->name = value; \ 604 #define ns(max_value, name, subs, ...) do { \ 606 CHECK(cbs_av1_read_ns(ctx, rw, max_value, #name, \ 607 SUBSCRIPTS(subs, __VA_ARGS__), &value)); \ 608 current->name = value; \ 611 #define increment(name, min, max) do { \ 613 CHECK(cbs_av1_read_increment(ctx, rw, min, max, #name, &value)); \ 614 current->name = value; \ 617 #define subexp(name, max, subs, ...) do { \ 619 CHECK(cbs_av1_read_subexp(ctx, rw, max, #name, \ 620 SUBSCRIPTS(subs, __VA_ARGS__), &value)); \ 621 current->name = value; \ 624 #define delta_q(name) do { \ 625 uint8_t delta_coded; \ 627 xf(1, name.delta_coded, delta_coded, 0, 1, 0, ); \ 629 xsu(1 + 6, name.delta_q, delta_q, 0, ); \ 632 current->name = delta_q; \ 635 #define leb128(name) do { \ 637 CHECK(cbs_av1_read_leb128(ctx, rw, #name, &value)); \ 638 current->name = value; \ 641 #define infer(name, value) do { \ 642 current->name = value; \ 645 #define byte_alignment(rw) (get_bits_count(rw) % 8) 661 #undef byte_alignment 665 #define READWRITE write 666 #define RWContext PutBitContext 668 #define xf(width, name, var, range_min, range_max, subs, ...) do { \ 669 CHECK(ff_cbs_write_unsigned(ctx, rw, width, #name, \ 670 SUBSCRIPTS(subs, __VA_ARGS__), \ 671 var, range_min, range_max)); \ 674 #define xsu(width, name, var, subs, ...) do { \ 675 CHECK(ff_cbs_write_signed(ctx, rw, width, #name, \ 676 SUBSCRIPTS(subs, __VA_ARGS__), var, \ 677 MIN_INT_BITS(width), \ 678 MAX_INT_BITS(width))); \ 681 #define uvlc(name, range_min, range_max) do { \ 682 CHECK(cbs_av1_write_uvlc(ctx, rw, #name, current->name, \ 683 range_min, range_max)); \ 686 #define ns(max_value, name, subs, ...) do { \ 687 CHECK(cbs_av1_write_ns(ctx, rw, max_value, #name, \ 688 SUBSCRIPTS(subs, __VA_ARGS__), \ 692 #define increment(name, min, max) do { \ 693 CHECK(cbs_av1_write_increment(ctx, rw, min, max, #name, \ 697 #define subexp(name, max, subs, ...) do { \ 698 CHECK(cbs_av1_write_subexp(ctx, rw, max, #name, \ 699 SUBSCRIPTS(subs, __VA_ARGS__), \ 703 #define delta_q(name) do { \ 704 xf(1, name.delta_coded, current->name != 0, 0, 1, 0, ); \ 706 xsu(1 + 6, name.delta_q, current->name, 0, ); \ 709 #define leb128(name) do { \ 710 CHECK(cbs_av1_write_leb128(ctx, rw, #name, current->name)); \ 713 #define infer(name, value) do { \ 714 if (current->name != (value)) { \ 715 av_log(ctx->log_ctx, AV_LOG_ERROR, \ 716 "%s does not match inferred value: " \ 717 "%"PRId64", but should be %"PRId64".\n", \ 718 #name, (int64_t)current->name, (int64_t)(value)); \ 719 return AVERROR_INVALIDDATA; \ 723 #define byte_alignment(rw) (put_bits_count(rw) % 8) 739 #undef byte_alignment 759 if (INT_MAX / 8 < size) {
772 err = cbs_av1_read_obu_header(ctx, &gbc, &header);
792 obu_length = pos / 8 + obu_size;
794 if (size < obu_length) {
796 "%"PRIu64
", but only %"SIZE_SPECIFIER" bytes remaining in fragment.\n",
871 "any data in tile group (%d bits read).\n", pos);
893 int err, start_pos, end_pos;
905 err = cbs_av1_read_obu_header(ctx, &gbc, &obu->
header);
934 int in_temporal_layer =
936 int in_spatial_layer =
938 if (!in_temporal_layer || !in_spatial_layer) {
952 err = cbs_av1_read_sequence_header_obu(ctx, &gbc,
968 err = cbs_av1_read_temporal_delimiter_obu(ctx, &gbc);
976 err = cbs_av1_read_frame_header_obu(ctx, &gbc,
987 err = cbs_av1_read_tile_group_obu(ctx, &gbc,
1000 err = cbs_av1_read_frame_obu(ctx, &gbc, &obu->
obu.
frame,
1013 err = cbs_av1_read_tile_list_obu(ctx, &gbc,
1026 err = cbs_av1_read_metadata_obu(ctx, &gbc, &obu->
obu.
metadata);
1033 err = cbs_av1_read_padding_obu(ctx, &gbc, &obu->
obu.
padding);
1049 int nb_bits = obu->
obu_size * 8 + start_pos - end_pos;
1054 err = cbs_av1_read_trailing_bits(ctx, &gbc, nb_bits);
1071 int err, start_pos, end_pos, data_pos;
1078 err = cbs_av1_write_obu_header(ctx, pbc, &obu->
header);
1097 err = cbs_av1_write_sequence_header_obu(ctx, pbc,
1113 err = cbs_av1_write_temporal_delimiter_obu(ctx, pbc);
1121 err = cbs_av1_write_frame_header_obu(ctx, pbc,
1132 err = cbs_av1_write_tile_group_obu(ctx, pbc,
1142 err = cbs_av1_write_frame_obu(ctx, pbc, &obu->
obu.
frame,
NULL);
1151 err = cbs_av1_write_tile_list_obu(ctx, pbc, &obu->
obu.
tile_list);
1160 err = cbs_av1_write_metadata_obu(ctx, pbc, &obu->
obu.
metadata);
1167 err = cbs_av1_write_padding_obu(ctx, pbc, &obu->
obu.
padding);
1177 header_size = (end_pos - start_pos + 7) / 8;
1180 }
else if (header_size > 0) {
1182 err = cbs_av1_write_trailing_bits(ctx, pbc, 8 - end_pos % 8);
1186 obu->
obu_size = header_size = (end_pos - start_pos + 7) / 8;
1212 memmove(pbc->
buf + data_pos,
1213 pbc->
buf + start_pos, header_size);
1217 memcpy(pbc->
buf + data_pos + header_size,
1236 for (i = 0; i < frag->
nb_units; i++)
1246 for (i = 0; i < frag->
nb_units; i++) {
static void av_unused put_bits32(PutBitContext *s, uint32_t value)
Write exactly 32 bits into a bitstream.
int nb_units
Number of units in this fragment.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
AV1ReferenceFrameState write_ref[AV1_NUM_REF_FRAMES]
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it...
static void put_bits(Jpeg2000EncoderContext *s, int val, int n)
put n times val bit
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
static void cbs_av1_free_metadata(AV1RawMetadata *md)
AVBufferRef * sequence_header_ref
CodedBitstreamUnitType type
Codec-specific type of this unit.
static int cbs_av1_read_uvlc(CodedBitstreamContext *ctx, GetBitContext *gbc, const char *name, uint32_t *write_to, uint32_t range_min, uint32_t range_max)
static void cbs_av1_close(CodedBitstreamContext *ctx)
int ff_cbs_alloc_unit_content(CodedBitstreamContext *ctx, CodedBitstreamUnit *unit, size_t size, void(*free)(void *opaque, uint8_t *data))
int ff_cbs_write_unsigned(CodedBitstreamContext *ctx, PutBitContext *pbc, int width, const char *name, const int *subscripts, uint32_t value, uint32_t range_min, uint32_t range_max)
static int cbs_av1_write_increment(CodedBitstreamContext *ctx, PutBitContext *pbc, uint32_t range_min, uint32_t range_max, const char *name, uint32_t value)
static void cbs_av1_free_obu(void *opaque, uint8_t *content)
#define av_assert0(cond)
assert() equivalent, that is always enabled.
int trace_enable
Enable trace output during read/write operations.
static int cbs_av1_write_uvlc(CodedBitstreamContext *ctx, PutBitContext *pbc, const char *name, uint32_t value, uint32_t range_min, uint32_t range_max)
int(* assemble_fragment)(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag)
static int cbs_av1_read_unit(CodedBitstreamContext *ctx, CodedBitstreamUnit *unit)
#define MAX_UINT_BITS(length)
int ff_cbs_read_unsigned(CodedBitstreamContext *ctx, GetBitContext *gbc, int width, const char *name, const int *subscripts, uint32_t *write_to, uint32_t range_min, uint32_t range_max)
static int get_bits_count(const GetBitContext *s)
Coded bitstream unit structure.
void * content
Pointer to the decomposed form of this unit.
static const uint8_t header[24]
CodedBitstreamUnit * units
Pointer to an array of units of length nb_units_allocated.
uint8_t * data
Pointer to the directly-parsable bitstream form of this unit.
static void cbs_av1_free_padding(AV1RawPadding *pd)
int ff_cbs_insert_unit_data(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, int position, CodedBitstreamUnitType type, uint8_t *data, size_t data_size, AVBufferRef *data_buf)
Insert a new unit into a fragment with the given data bitstream.
size_t data_size
The number of bytes in the bitstream.
static int cbs_av1_read_ns(CodedBitstreamContext *ctx, GetBitContext *gbc, uint32_t n, const char *name, const int *subscripts, uint32_t *write_to)
int(* write_unit)(CodedBitstreamContext *ctx, CodedBitstreamUnit *unit, PutBitContext *pbc)
static int get_bits_left(GetBitContext *gb)
static void cbs_av1_free_tile_data(AV1RawTileData *td)
#define i(width, name, range_min, range_max)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void(* close)(CodedBitstreamContext *ctx)
static int put_bits_left(PutBitContext *s)
AVBufferRef * frame_header_ref
static int cbs_av1_read_subexp(CodedBitstreamContext *ctx, GetBitContext *gbc, uint32_t range_max, const char *name, const int *subscripts, uint32_t *write_to)
simple assert() macros that are a bit more flexible than ISO C assert().
static int cbs_av1_tile_log2(int blksize, int target)
static int put_bits_count(PutBitContext *s)
void * log_ctx
Logging context to be passed to all av_log() calls associated with this context.
const CodedBitstreamType ff_cbs_type_av1
AVBufferRef * payload_ref
static void skip_put_bytes(PutBitContext *s, int n)
Skip the given number of bytes.
static int cbs_av1_write_obu(CodedBitstreamContext *ctx, CodedBitstreamUnit *unit, PutBitContext *pbc)
static int cbs_av1_write_leb128(CodedBitstreamContext *ctx, PutBitContext *pbc, const char *name, uint64_t value)
static int cbs_av1_assemble_fragment(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag)
AV1ReferenceFrameState * ref
static int cbs_av1_split_fragment(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, int header)
static int cbs_av1_ref_tile_data(CodedBitstreamContext *ctx, CodedBitstreamUnit *unit, GetBitContext *gbc, AV1RawTileData *td)
uint8_t * data
Pointer to the bitstream form of this fragment.
AVBufferRef * av_buffer_alloc(int size)
Allocate an AVBuffer of the given size using av_malloc().
AV1ReferenceFrameState read_ref[AV1_NUM_REF_FRAMES]
Coded bitstream fragment structure, combining one or more units.
uint8_t * data
The data buffer.
static size_t cbs_av1_get_payload_bytes_left(GetBitContext *gbc)
static unsigned int get_bits1(GetBitContext *s)
Context structure for coded bitstream operations.
static int cbs_av1_write_subexp(CodedBitstreamContext *ctx, PutBitContext *pbc, uint32_t range_max, const char *name, const int *subscripts, uint32_t value)
AVBufferRef * content_ref
If content is reference counted, a reference to the buffer containing content.
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
AV1RawTileGroup tile_group
AV1RawSequenceHeader * sequence_header
int(* read_unit)(CodedBitstreamContext *ctx, CodedBitstreamUnit *unit)
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
static int cbs_av1_write_ns(CodedBitstreamContext *ctx, PutBitContext *pbc, uint32_t n, const char *name, const int *subscripts, uint32_t value)
AV1RawSequenceHeader sequence_header
void * priv_data
Internal codec-specific data.
common internal api header.
static void flush_put_bits(PutBitContext *s)
Pad the end of the output stream with zeros.
int(* split_fragment)(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, int header)
AVBufferRef * data_ref
A reference to the buffer containing data.
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
static av_always_inline int diff(const uint32_t a, const uint32_t b)
AV1RawTileGroup tile_group
static int cbs_av1_read_increment(CodedBitstreamContext *ctx, GetBitContext *gbc, uint32_t range_min, uint32_t range_max, const char *name, uint32_t *write_to)
AV1RawFrameHeader frame_header
static int cbs_av1_read_leb128(CodedBitstreamContext *ctx, GetBitContext *gbc, const char *name, uint64_t *write_to)
static int cbs_av1_get_relative_dist(const AV1RawSequenceHeader *seq, unsigned int a, unsigned int b)
AVBufferRef * data_ref
A reference to the buffer containing data.
void ff_cbs_trace_syntax_element(CodedBitstreamContext *ctx, int position, const char *str, const int *subscripts, const char *bits, int64_t value)
size_t data_size
The number of bytes in the bitstream (including any padding bits in the final byte).