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 << zeroes) + 1;
137 for (j = 0; j < zeroes; j++)
140 for (j = 0; j < zeroes; j++)
141 bits[i++] = (v >> (zeroes - j - 1) & 1) ?
'1' :
'0';
151 const char *
name, uint64_t *write_to)
154 int position, err,
i;
160 for (i = 0; i < 8; i++) {
161 int subscript[2] = { 1, i };
168 value |= (uint64_t)(byte & 0x7f) << (i * 7);
183 int position, err,
len,
i;
186 len = (
av_log2(value) + 7) / 7;
191 for (i = 0; i <
len; i++) {
192 int subscript[2] = { 1, i };
194 byte = value >> (7 *
i) & 0x7f;
212 const int *subscripts,
int32_t *write_to)
222 "%s: bitstream ended.\n", name);
231 for (i = 0; i <
width; i++)
232 bits[i] = value & (1 << (width - i - 1)) ?
'1' :
'0';
236 name, subscripts, bits, value);
253 for (i = 0; i <
width; i++)
254 bits[i] = value & (1 << (width - i - 1)) ?
'1' :
'0';
258 name, subscripts, bits, value);
267 uint32_t
n,
const char *
name,
268 const int *subscripts, uint32_t *write_to)
270 uint32_t
w, m, v, extra_bit,
value;
283 "%s: bitstream ended.\n", name);
296 value = (v << 1) - m + extra_bit;
302 for (i = 0; i < w - 1; i++)
303 bits[i] = (v >> i & 1) ?
'1' :
'0';
305 bits[i++] = extra_bit ?
'1' :
'0';
309 name, subscripts, bits, value);
317 uint32_t
n,
const char *
name,
318 const int *subscripts, uint32_t
value)
320 uint32_t
w, m, v, extra_bit;
325 "%"PRIu32
", but must be in [0,%"PRIu32
"].\n",
343 v = m + ((value - m) >> 1);
344 extra_bit = (value - m) & 1;
352 for (i = 0; i < w - 1; i++)
353 bits[i] = (v >> i & 1) ?
'1' :
'0';
355 bits[i++] = extra_bit ?
'1' :
'0';
359 name, subscripts, bits, value);
366 uint32_t range_min, uint32_t range_max,
367 const char *
name, uint32_t *write_to)
373 av_assert0(range_min <= range_max && range_max - range_min <
sizeof(bits) - 1);
377 for (i = 0, value = range_min; value < range_max;) {
380 "%s: bitstream ended.\n", name);
395 name,
NULL, bits, value);
403 uint32_t range_min, uint32_t range_max,
408 av_assert0(range_min <= range_max && range_max - range_min < 32);
409 if (value < range_min || value > range_max) {
411 "%"PRIu32
", but must be in [%"PRIu32
",%"PRIu32
"].\n",
412 name, value, range_min, range_max);
416 if (value == range_max)
417 len = range_max - range_min;
419 len = value - range_min + 1;
426 for (i = 0; i <
len; i++) {
427 if (range_min + i == value)
434 name,
NULL, bits, value);
438 put_bits(pbc, len, (1 << len) - 1 - (value != range_max));
444 uint32_t range_max,
const char *
name,
445 const int *subscripts, uint32_t *write_to)
449 uint32_t max_len,
len, range_offset, range_bits;
455 max_len =
av_log2(range_max - 1) - 3;
458 "subexp_more_bits", &len);
463 range_bits = 2 +
len;
464 range_offset = 1 << range_bits;
472 "subexp_bits",
NULL, &value,
479 "subexp_final_bits",
NULL, &value);
483 value += range_offset;
487 name, subscripts,
"", value);
494 uint32_t range_max,
const char *
name,
495 const int *subscripts, uint32_t
value)
498 uint32_t max_len,
len, range_offset, range_bits;
500 if (value > range_max) {
502 "%"PRIu32
", but must be in [0,%"PRIu32
"].\n",
503 name, value, range_max);
511 max_len =
av_log2(range_max - 1) - 3;
519 len = range_bits - 2;
526 range_offset = 1 << range_bits;
530 "subexp_more_bits", len);
537 value - range_offset,
544 "subexp_final_bits",
NULL,
545 value - range_offset);
552 name, subscripts,
"", value);
561 for (k = 0; (blksize << k) < target; k++);
566 unsigned int a,
unsigned int b)
568 unsigned int diff, m;
573 diff = (diff & (m - 1)) - (diff & m);
578 #define HEADER(name) do { \ 579 ff_cbs_trace_header(ctx, name); \ 582 #define CHECK(call) do { \ 588 #define FUNC_NAME(rw, codec, name) cbs_ ## codec ## _ ## rw ## _ ## name 589 #define FUNC_AV1(rw, name) FUNC_NAME(rw, av1, name) 590 #define FUNC(name) FUNC_AV1(READWRITE, name) 592 #define SUBSCRIPTS(subs, ...) (subs > 0 ? ((int[subs + 1]){ subs, __VA_ARGS__ }) : NULL) 594 #define fb(width, name) \ 595 xf(width, name, current->name, 0, MAX_UINT_BITS(width), 0) 596 #define fc(width, name, range_min, range_max) \ 597 xf(width, name, current->name, range_min, range_max, 0) 598 #define flag(name) fb(1, name) 599 #define su(width, name) \ 600 xsu(width, name, current->name, 0) 602 #define fbs(width, name, subs, ...) \ 603 xf(width, name, current->name, 0, MAX_UINT_BITS(width), subs, __VA_ARGS__) 604 #define fcs(width, name, range_min, range_max, subs, ...) \ 605 xf(width, name, current->name, range_min, range_max, subs, __VA_ARGS__) 606 #define flags(name, subs, ...) \ 607 xf(1, name, current->name, 0, 1, subs, __VA_ARGS__) 608 #define sus(width, name, subs, ...) \ 609 xsu(width, name, current->name, subs, __VA_ARGS__) 611 #define fixed(width, name, value) do { \ 612 av_unused uint32_t fixed_value = value; \ 613 xf(width, name, fixed_value, value, value, 0); \ 618 #define READWRITE read 619 #define RWContext GetBitContext 621 #define xf(width, name, var, range_min, range_max, subs, ...) do { \ 622 uint32_t value = range_min; \ 623 CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, \ 624 SUBSCRIPTS(subs, __VA_ARGS__), \ 625 &value, range_min, range_max)); \ 629 #define xsu(width, name, var, subs, ...) do { \ 631 CHECK(cbs_av1_read_su(ctx, rw, width, #name, \ 632 SUBSCRIPTS(subs, __VA_ARGS__), &value)); \ 636 #define uvlc(name, range_min, range_max) do { \ 637 uint32_t value = range_min; \ 638 CHECK(cbs_av1_read_uvlc(ctx, rw, #name, \ 639 &value, range_min, range_max)); \ 640 current->name = value; \ 643 #define ns(max_value, name, subs, ...) do { \ 644 uint32_t value = 0; \ 645 CHECK(cbs_av1_read_ns(ctx, rw, max_value, #name, \ 646 SUBSCRIPTS(subs, __VA_ARGS__), &value)); \ 647 current->name = value; \ 650 #define increment(name, min, max) do { \ 651 uint32_t value = 0; \ 652 CHECK(cbs_av1_read_increment(ctx, rw, min, max, #name, &value)); \ 653 current->name = value; \ 656 #define subexp(name, max, subs, ...) do { \ 657 uint32_t value = 0; \ 658 CHECK(cbs_av1_read_subexp(ctx, rw, max, #name, \ 659 SUBSCRIPTS(subs, __VA_ARGS__), &value)); \ 660 current->name = value; \ 663 #define delta_q(name) do { \ 664 uint8_t delta_coded; \ 666 xf(1, name.delta_coded, delta_coded, 0, 1, 0); \ 668 xsu(1 + 6, name.delta_q, delta_q, 0); \ 671 current->name = delta_q; \ 674 #define leb128(name) do { \ 675 uint64_t value = 0; \ 676 CHECK(cbs_av1_read_leb128(ctx, rw, #name, &value)); \ 677 current->name = value; \ 680 #define infer(name, value) do { \ 681 current->name = value; \ 684 #define byte_alignment(rw) (get_bits_count(rw) % 8) 701 #undef byte_alignment 705 #define READWRITE write 706 #define RWContext PutBitContext 708 #define xf(width, name, var, range_min, range_max, subs, ...) do { \ 709 CHECK(ff_cbs_write_unsigned(ctx, rw, width, #name, \ 710 SUBSCRIPTS(subs, __VA_ARGS__), \ 711 var, range_min, range_max)); \ 714 #define xsu(width, name, var, subs, ...) do { \ 715 CHECK(cbs_av1_write_su(ctx, rw, width, #name, \ 716 SUBSCRIPTS(subs, __VA_ARGS__), var)); \ 719 #define uvlc(name, range_min, range_max) do { \ 720 CHECK(cbs_av1_write_uvlc(ctx, rw, #name, current->name, \ 721 range_min, range_max)); \ 724 #define ns(max_value, name, subs, ...) do { \ 725 CHECK(cbs_av1_write_ns(ctx, rw, max_value, #name, \ 726 SUBSCRIPTS(subs, __VA_ARGS__), \ 730 #define increment(name, min, max) do { \ 731 CHECK(cbs_av1_write_increment(ctx, rw, min, max, #name, \ 735 #define subexp(name, max, subs, ...) do { \ 736 CHECK(cbs_av1_write_subexp(ctx, rw, max, #name, \ 737 SUBSCRIPTS(subs, __VA_ARGS__), \ 741 #define delta_q(name) do { \ 742 xf(1, name.delta_coded, current->name != 0, 0, 1, 0); \ 744 xsu(1 + 6, name.delta_q, current->name, 0); \ 747 #define leb128(name) do { \ 748 CHECK(cbs_av1_write_leb128(ctx, rw, #name, current->name)); \ 751 #define infer(name, value) do { \ 752 if (current->name != (value)) { \ 753 av_log(ctx->log_ctx, AV_LOG_WARNING, "Warning: " \ 754 "%s does not match inferred value: " \ 755 "%"PRId64", but should be %"PRId64".\n", \ 756 #name, (int64_t)current->name, (int64_t)(value)); \ 760 #define byte_alignment(rw) (put_bits_count(rw) % 8) 776 #undef byte_alignment 796 if (INT_MAX / 8 < size) {
809 err = cbs_av1_read_obu_header(ctx, &gbc, &header);
815 "stream: size field must be present.\n");
834 obu_length = pos / 8 + obu_size;
836 if (size < obu_length) {
838 "%"PRIu64
", but only %"SIZE_SPECIFIER" bytes remaining in fragment.\n",
905 "any data in tile group (%d bits read).\n", pos);
927 int err, start_pos, end_pos;
939 err = cbs_av1_read_obu_header(ctx, &gbc, &obu->
header);
968 int in_temporal_layer =
970 int in_spatial_layer =
972 if (!in_temporal_layer || !in_spatial_layer) {
986 err = cbs_av1_read_sequence_header_obu(ctx, &gbc,
1002 err = cbs_av1_read_temporal_delimiter_obu(ctx, &gbc);
1010 err = cbs_av1_read_frame_header_obu(ctx, &gbc,
1021 err = cbs_av1_read_tile_group_obu(ctx, &gbc,
1034 err = cbs_av1_read_frame_obu(ctx, &gbc, &obu->
obu.
frame,
1047 err = cbs_av1_read_tile_list_obu(ctx, &gbc,
1060 err = cbs_av1_read_metadata_obu(ctx, &gbc, &obu->
obu.
metadata);
1077 int nb_bits = obu->
obu_size * 8 + start_pos - end_pos;
1082 err = cbs_av1_read_trailing_bits(ctx, &gbc, nb_bits);
1099 int err, start_pos, end_pos, data_pos;
1106 err = cbs_av1_write_obu_header(ctx, pbc, &obu->
header);
1125 err = cbs_av1_write_sequence_header_obu(ctx, pbc,
1141 err = cbs_av1_write_temporal_delimiter_obu(ctx, pbc);
1149 err = cbs_av1_write_frame_header_obu(ctx, pbc,
1160 err = cbs_av1_write_tile_group_obu(ctx, pbc,
1170 err = cbs_av1_write_frame_obu(ctx, pbc, &obu->
obu.
frame,
NULL);
1179 err = cbs_av1_write_tile_list_obu(ctx, pbc, &obu->
obu.
tile_list);
1188 err = cbs_av1_write_metadata_obu(ctx, pbc, &obu->
obu.
metadata);
1199 header_size = (end_pos - start_pos + 7) / 8;
1202 }
else if (header_size > 0) {
1204 err = cbs_av1_write_trailing_bits(ctx, pbc, 8 - end_pos % 8);
1208 obu->
obu_size = header_size = (end_pos - start_pos + 7) / 8;
1259 reallocate_and_try_again:
1263 "sufficiently large write buffer (last attempt " 1275 goto reallocate_and_try_again;
1305 for (i = 0; i < frag->
nb_units; i++)
1315 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.
static void cbs_av1_free_obu(void *unit, uint8_t *content)
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_sbits(PutBitContext *pb, int n, int32_t value)
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)
static int cbs_av1_write_su(CodedBitstreamContext *ctx, PutBitContext *pbc, int width, const char *name, const int *subscripts, int32_t value)
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))
static int get_sbits(GetBitContext *s, int n)
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)
#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)
int ff_cbs_alloc_unit_data(CodedBitstreamContext *ctx, CodedBitstreamUnit *unit, size_t size)
Allocate a new internal data buffer of the given size in the unit.
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.
uint8_t * data
Pointer to the directly-parsable bitstream form of this unit.
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)
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_read_su(CodedBitstreamContext *ctx, GetBitContext *gbc, int width, const char *name, const int *subscripts, int32_t *write_to)
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
int(* write_unit)(CodedBitstreamContext *ctx, CodedBitstreamUnit *unit)
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.
int av_reallocp(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory through a pointer to a pointer.
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 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_unit(CodedBitstreamContext *ctx, CodedBitstreamUnit *unit)
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.
static void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_size)
Initialize the PutBitContext s.
#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).