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);
173 if (value > UINT32_MAX)
186 int position, err,
len,
i;
189 len = (
av_log2(value) + 7) / 7;
194 for (i = 0; i <
len; i++) {
195 int subscript[2] = { 1, i };
197 byte = value >> (7 *
i) & 0x7f;
214 uint32_t
n,
const char *
name,
215 const int *subscripts, uint32_t *write_to)
217 uint32_t
w, m, v, extra_bit,
value;
230 "%s: bitstream ended.\n", name);
243 value = (v << 1) - m + extra_bit;
249 for (i = 0; i < w - 1; i++)
250 bits[i] = (v >> i & 1) ?
'1' :
'0';
252 bits[i++] = extra_bit ?
'1' :
'0';
256 name, subscripts, bits, value);
264 uint32_t
n,
const char *
name,
265 const int *subscripts, uint32_t
value)
267 uint32_t
w, m, v, extra_bit;
272 "%"PRIu32
", but must be in [0,%"PRIu32
"].\n",
290 v = m + ((value - m) >> 1);
291 extra_bit = (value - m) & 1;
299 for (i = 0; i < w - 1; i++)
300 bits[i] = (v >> i & 1) ?
'1' :
'0';
302 bits[i++] = extra_bit ?
'1' :
'0';
306 name, subscripts, bits, value);
313 uint32_t range_min, uint32_t range_max,
314 const char *
name, uint32_t *write_to)
320 av_assert0(range_min <= range_max && range_max - range_min <
sizeof(bits) - 1);
324 for (i = 0, value = range_min; value < range_max;) {
327 "%s: bitstream ended.\n", name);
342 name,
NULL, bits, value);
350 uint32_t range_min, uint32_t range_max,
355 av_assert0(range_min <= range_max && range_max - range_min < 32);
356 if (value < range_min || value > range_max) {
358 "%"PRIu32
", but must be in [%"PRIu32
",%"PRIu32
"].\n",
359 name, value, range_min, range_max);
363 if (value == range_max)
364 len = range_max - range_min;
366 len = value - range_min + 1;
373 for (i = 0; i <
len; i++) {
374 if (range_min + i == value)
381 name,
NULL, bits, value);
385 put_bits(pbc, len, (1 << len) - 1 - (value != range_max));
391 uint32_t range_max,
const char *
name,
392 const int *subscripts, uint32_t *write_to)
396 uint32_t max_len,
len, range_offset, range_bits;
402 max_len =
av_log2(range_max - 1) - 3;
405 "subexp_more_bits", &len);
410 range_bits = 2 +
len;
411 range_offset = 1 << range_bits;
419 "subexp_bits",
NULL, &value,
426 "subexp_final_bits",
NULL, &value);
430 value += range_offset;
434 name, subscripts,
"", value);
441 uint32_t range_max,
const char *
name,
442 const int *subscripts, uint32_t
value)
445 uint32_t max_len,
len, range_offset, range_bits;
447 if (value > range_max) {
449 "%"PRIu32
", but must be in [0,%"PRIu32
"].\n",
450 name, value, range_max);
458 max_len =
av_log2(range_max - 1) - 3;
466 len = range_bits - 2;
473 range_offset = 1 << range_bits;
477 "subexp_more_bits", len);
484 value - range_offset,
491 "subexp_final_bits",
NULL,
492 value - range_offset);
499 name, subscripts,
"", value);
508 for (k = 0; (blksize << k) < target; k++);
513 unsigned int a,
unsigned int b)
515 unsigned int diff, m;
520 diff = (diff & (m - 1)) - (diff & m);
536 #define HEADER(name) do { \ 537 ff_cbs_trace_header(ctx, name); \ 540 #define CHECK(call) do { \ 546 #define FUNC_NAME(rw, codec, name) cbs_ ## codec ## _ ## rw ## _ ## name 547 #define FUNC_AV1(rw, name) FUNC_NAME(rw, av1, name) 548 #define FUNC(name) FUNC_AV1(READWRITE, name) 550 #define SUBSCRIPTS(subs, ...) (subs > 0 ? ((int[subs + 1]){ subs, __VA_ARGS__ }) : NULL) 552 #define fb(width, name) \ 553 xf(width, name, current->name, 0, MAX_UINT_BITS(width), 0) 554 #define fc(width, name, range_min, range_max) \ 555 xf(width, name, current->name, range_min, range_max, 0) 556 #define flag(name) fb(1, name) 557 #define su(width, name) \ 558 xsu(width, name, current->name, 0) 560 #define fbs(width, name, subs, ...) \ 561 xf(width, name, current->name, 0, MAX_UINT_BITS(width), subs, __VA_ARGS__) 562 #define fcs(width, name, range_min, range_max, subs, ...) \ 563 xf(width, name, current->name, range_min, range_max, subs, __VA_ARGS__) 564 #define flags(name, subs, ...) \ 565 xf(1, name, current->name, 0, 1, subs, __VA_ARGS__) 566 #define sus(width, name, subs, ...) \ 567 xsu(width, name, current->name, subs, __VA_ARGS__) 569 #define fixed(width, name, value) do { \ 570 av_unused uint32_t fixed_value = value; \ 571 xf(width, name, fixed_value, value, value, 0); \ 576 #define READWRITE read 577 #define RWContext GetBitContext 579 #define xf(width, name, var, range_min, range_max, subs, ...) do { \ 581 CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, \ 582 SUBSCRIPTS(subs, __VA_ARGS__), \ 583 &value, range_min, range_max)); \ 587 #define xsu(width, name, var, subs, ...) do { \ 589 CHECK(ff_cbs_read_signed(ctx, rw, width, #name, \ 590 SUBSCRIPTS(subs, __VA_ARGS__), &value, \ 591 MIN_INT_BITS(width), \ 592 MAX_INT_BITS(width))); \ 596 #define uvlc(name, range_min, range_max) do { \ 598 CHECK(cbs_av1_read_uvlc(ctx, rw, #name, \ 599 &value, range_min, range_max)); \ 600 current->name = value; \ 603 #define ns(max_value, name, subs, ...) do { \ 605 CHECK(cbs_av1_read_ns(ctx, rw, max_value, #name, \ 606 SUBSCRIPTS(subs, __VA_ARGS__), &value)); \ 607 current->name = value; \ 610 #define increment(name, min, max) do { \ 612 CHECK(cbs_av1_read_increment(ctx, rw, min, max, #name, &value)); \ 613 current->name = value; \ 616 #define subexp(name, max, subs, ...) do { \ 618 CHECK(cbs_av1_read_subexp(ctx, rw, max, #name, \ 619 SUBSCRIPTS(subs, __VA_ARGS__), &value)); \ 620 current->name = value; \ 623 #define delta_q(name) do { \ 624 uint8_t delta_coded; \ 626 xf(1, name.delta_coded, delta_coded, 0, 1, 0); \ 628 xsu(1 + 6, name.delta_q, delta_q, 0); \ 631 current->name = delta_q; \ 634 #define leb128(name) do { \ 636 CHECK(cbs_av1_read_leb128(ctx, rw, #name, &value)); \ 637 current->name = value; \ 640 #define infer(name, value) do { \ 641 current->name = value; \ 644 #define byte_alignment(rw) (get_bits_count(rw) % 8) 660 #undef byte_alignment 664 #define READWRITE write 665 #define RWContext PutBitContext 667 #define xf(width, name, var, range_min, range_max, subs, ...) do { \ 668 CHECK(ff_cbs_write_unsigned(ctx, rw, width, #name, \ 669 SUBSCRIPTS(subs, __VA_ARGS__), \ 670 var, range_min, range_max)); \ 673 #define xsu(width, name, var, subs, ...) do { \ 674 CHECK(ff_cbs_write_signed(ctx, rw, width, #name, \ 675 SUBSCRIPTS(subs, __VA_ARGS__), var, \ 676 MIN_INT_BITS(width), \ 677 MAX_INT_BITS(width))); \ 680 #define uvlc(name, range_min, range_max) do { \ 681 CHECK(cbs_av1_write_uvlc(ctx, rw, #name, current->name, \ 682 range_min, range_max)); \ 685 #define ns(max_value, name, subs, ...) do { \ 686 CHECK(cbs_av1_write_ns(ctx, rw, max_value, #name, \ 687 SUBSCRIPTS(subs, __VA_ARGS__), \ 691 #define increment(name, min, max) do { \ 692 CHECK(cbs_av1_write_increment(ctx, rw, min, max, #name, \ 696 #define subexp(name, max, subs, ...) do { \ 697 CHECK(cbs_av1_write_subexp(ctx, rw, max, #name, \ 698 SUBSCRIPTS(subs, __VA_ARGS__), \ 702 #define delta_q(name) do { \ 703 xf(1, name.delta_coded, current->name != 0, 0, 1, 0); \ 705 xsu(1 + 6, name.delta_q, current->name, 0); \ 708 #define leb128(name) do { \ 709 CHECK(cbs_av1_write_leb128(ctx, rw, #name, current->name)); \ 712 #define infer(name, value) do { \ 713 if (current->name != (value)) { \ 714 av_log(ctx->log_ctx, AV_LOG_WARNING, "Warning: " \ 715 "%s does not match inferred value: " \ 716 "%"PRId64", but should be %"PRId64".\n", \ 717 #name, (int64_t)current->name, (int64_t)(value)); \ 721 #define byte_alignment(rw) (put_bits_count(rw) % 8) 737 #undef byte_alignment 757 if (INT_MAX / 8 < size) {
770 err = cbs_av1_read_obu_header(ctx, &gbc, &header);
791 obu_length = pos / 8 + obu_size;
793 if (size < obu_length) {
795 "%"PRIu64
", but only %"SIZE_SPECIFIER" bytes remaining in fragment.\n",
870 "any data in tile group (%d bits read).\n", pos);
892 int err, start_pos, end_pos;
904 err = cbs_av1_read_obu_header(ctx, &gbc, &obu->
header);
933 int in_temporal_layer =
935 int in_spatial_layer =
937 if (!in_temporal_layer || !in_spatial_layer) {
951 err = cbs_av1_read_sequence_header_obu(ctx, &gbc,
967 err = cbs_av1_read_temporal_delimiter_obu(ctx, &gbc);
975 err = cbs_av1_read_frame_header_obu(ctx, &gbc,
986 err = cbs_av1_read_tile_group_obu(ctx, &gbc,
999 err = cbs_av1_read_frame_obu(ctx, &gbc, &obu->
obu.
frame,
1012 err = cbs_av1_read_tile_list_obu(ctx, &gbc,
1025 err = cbs_av1_read_metadata_obu(ctx, &gbc, &obu->
obu.
metadata);
1032 err = cbs_av1_read_padding_obu(ctx, &gbc, &obu->
obu.
padding);
1048 int nb_bits = obu->
obu_size * 8 + start_pos - end_pos;
1053 err = cbs_av1_read_trailing_bits(ctx, &gbc, nb_bits);
1070 int err, start_pos, end_pos, data_pos;
1077 err = cbs_av1_write_obu_header(ctx, pbc, &obu->
header);
1096 err = cbs_av1_write_sequence_header_obu(ctx, pbc,
1112 err = cbs_av1_write_temporal_delimiter_obu(ctx, pbc);
1120 err = cbs_av1_write_frame_header_obu(ctx, pbc,
1131 err = cbs_av1_write_tile_group_obu(ctx, pbc,
1141 err = cbs_av1_write_frame_obu(ctx, pbc, &obu->
obu.
frame,
NULL);
1150 err = cbs_av1_write_tile_list_obu(ctx, pbc, &obu->
obu.
tile_list);
1159 err = cbs_av1_write_metadata_obu(ctx, pbc, &obu->
obu.
metadata);
1166 err = cbs_av1_write_padding_obu(ctx, pbc, &obu->
obu.
padding);
1176 header_size = (end_pos - start_pos + 7) / 8;
1179 }
else if (header_size > 0) {
1181 err = cbs_av1_write_trailing_bits(ctx, pbc, 8 - end_pos % 8);
1185 obu->
obu_size = header_size = (end_pos - start_pos + 7) / 8;
1211 memmove(pbc->
buf + data_pos,
1212 pbc->
buf + start_pos, header_size);
1216 memcpy(pbc->
buf + data_pos + header_size,
1235 for (i = 0; i < frag->
nb_units; i++)
1245 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_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)
#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).