cbs_vp9.c File Reference

#include "libavutil/avassert.h"
#include "cbs.h"
#include "cbs_internal.h"
#include "cbs_vp9.h"
#include "internal.h"
#include "cbs_vp9_syntax_template.c"

Go to the source code of this file.

Macros
#define	HEADER(name)
#define	CHECK(call)
#define	FUNC_NAME(rw, codec, name)   cbs_ ## codec ## _ ## rw ## _ ## name
#define	FUNC_VP9(rw, name)   FUNC_NAME(rw, vp9, name)
#define	FUNC(name)   FUNC_VP9(READWRITE, name)
#define	SUBSCRIPTS(subs, ...)   (subs > 0 ? ((int[subs + 1]){ subs, __VA_ARGS__ }) : NULL)
#define	f(width, name)   xf(width, name, current->name, 0, )
#define	s(width, name)   xs(width, name, current->name, 0, )
#define	fs(width, name, subs, ...)   xf(width, name, current->name, subs, __VA_ARGS__)
#define	ss(width, name, subs, ...)   xs(width, name, current->name, subs, __VA_ARGS__)
#define	READ
#define	READWRITE   read
#define	RWContext   GetBitContext
#define	xf(width, name, var, subs, ...)
#define	xs(width, name, var, subs, ...)
#define	increment(name, min, max)
#define	fle(width, name, subs, ...)
#define	delta_q(name)
#define	prob(name, subs, ...)
#define	fixed(width, name, value)
#define	infer(name, value)
#define	byte_alignment(rw)   (get_bits_count(rw) % 8)
#define	WRITE
#define	READWRITE   write
#define	RWContext   PutBitContext
#define	xf(width, name, var, subs, ...)
#define	xs(width, name, var, subs, ...)
#define	increment(name, min, max)
#define	fle(width, name, subs, ...)
#define	delta_q(name)
#define	prob(name, subs, ...)
#define	fixed(width, name, value)
#define	infer(name, value)
#define	byte_alignment(rw)   (put_bits_count(rw) % 8)

Functions
static int	cbs_vp9_read_s (CodedBitstreamContext *ctx, GetBitContext *gbc, int width, const char *name, const int *subscripts, int32_t *write_to)
static int	cbs_vp9_write_s (CodedBitstreamContext *ctx, PutBitContext *pbc, int width, const char *name, const int *subscripts, int32_t value)
static int	cbs_vp9_read_increment (CodedBitstreamContext *ctx, GetBitContext *gbc, uint32_t range_min, uint32_t range_max, const char *name, uint32_t *write_to)
static int	cbs_vp9_write_increment (CodedBitstreamContext *ctx, PutBitContext *pbc, uint32_t range_min, uint32_t range_max, const char *name, uint32_t value)
static int	cbs_vp9_read_le (CodedBitstreamContext *ctx, GetBitContext *gbc, int width, const char *name, const int *subscripts, uint32_t *write_to)
static int	cbs_vp9_write_le (CodedBitstreamContext *ctx, PutBitContext *pbc, int width, const char *name, const int *subscripts, uint32_t value)
static int	cbs_vp9_split_fragment (CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, int header)
static void	cbs_vp9_free_frame (void *opaque, uint8_t *content)
static int	cbs_vp9_read_unit (CodedBitstreamContext *ctx, CodedBitstreamUnit *unit)
static int	cbs_vp9_write_unit (CodedBitstreamContext *ctx, CodedBitstreamUnit *unit, PutBitContext *pbc)
static int	cbs_vp9_assemble_fragment (CodedBitstreamContext *ctx, CodedBitstreamFragment *frag)

Variables
const CodedBitstreamType	ff_cbs_type_vp9

Macro Definition Documentation

HEADER

#define HEADER

(

name

)

Value:

        do { \
        ff_cbs_trace_header(ctx, name); \
    } while (0)

Definition at line 239 of file cbs_vp9.c.

CHECK

#define CHECK

(

call

)

Value:

        do { \
        err = (call); \
        if (err < 0) \
            return err; \
    } while (0)

Definition at line 243 of file cbs_vp9.c.

FUNC_NAME

#define FUNC_NAME	(		rw,
			codec,
			name
	)		cbs_ ## codec ## _ ## rw ## _ ## name

Definition at line 249 of file cbs_vp9.c.

FUNC_VP9

#define FUNC_VP9	(		rw,
			name
	)		FUNC_NAME(rw, vp9, name)

Definition at line 250 of file cbs_vp9.c.

FUNC

#define FUNC

(

name

)

FUNC_VP9(READWRITE, name)

Definition at line 251 of file cbs_vp9.c.

SUBSCRIPTS

#define SUBSCRIPTS	(		subs,
			...
	)		(subs > 0 ? ((int[subs + 1]){ subs, __VA_ARGS__ }) : NULL)

Definition at line 253 of file cbs_vp9.c.

f

#define f	(		width,
			name
	)		xf(width, name, current->name, 0, )

Examples

decode_audio.c, decode_video.c, encode_audio.c, and encode_video.c.

Definition at line 255 of file cbs_vp9.c.

s

#define s	(		width,
			name
	)		xs(width, name, current->name, 0, )

Definition at line 257 of file cbs_vp9.c.

fs

#define fs	(		width,
			name,
			subs,
			...
	)		xf(width, name, current->name, subs, __VA_ARGS__)

Definition at line 259 of file cbs_vp9.c.

ss

#define ss	(		width,
			name,
			subs,
			...
	)		xs(width, name, current->name, subs, __VA_ARGS__)

Definition at line 261 of file cbs_vp9.c.

READ

#define READ

Definition at line 264 of file cbs_vp9.c.

READWRITE [1/2]

#define READWRITE   read

Definition at line 345 of file cbs_vp9.c.

RWContext [1/2]

#define RWContext   GetBitContext

Definition at line 346 of file cbs_vp9.c.

xf [1/2]

#define xf	(		width,
			name,
			var,
			subs,
			...
	)

Value:

        do { \
        uint32_t value; \
        CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, \
                                   SUBSCRIPTS(subs, __VA_ARGS__), \
                                   &value, 0, (1 << width) - 1)); \
        var = value; \
    } while (0)

Definition at line 348 of file cbs_vp9.c.

xs [1/2]

#define xs	(		width,
			name,
			var,
			subs,
			...
	)

Value:

        do { \
        int32_t value; \
        CHECK(cbs_vp9_read_s(ctx, rw, width, #name, \
                             SUBSCRIPTS(subs, __VA_ARGS__), &value)); \
        var = value; \
    } while (0)

Definition at line 353 of file cbs_vp9.c.

increment [1/2]

#define increment	(		name,
			min,
			max
	)

Value:

        do { \
        uint32_t value; \
        CHECK(cbs_vp9_read_increment(ctx, rw, min, max, #name, &value)); \
        current->name = value; \
    } while (0)

Definition at line 358 of file cbs_vp9.c.

fle [1/2]

#define fle	(		width,
			name,
			subs,
			...
	)

Value:

        do { \
        CHECK(cbs_vp9_read_le(ctx, rw, width, #name, \
                              SUBSCRIPTS(subs, __VA_ARGS__), &current->name)); \
    } while (0)

Definition at line 362 of file cbs_vp9.c.

delta_q [1/2]

#define delta_q

(

name

)

Value:

        do { \
        uint8_t delta_coded; \
        int8_t delta_q; \
        xf(1, name.delta_coded, delta_coded, 0, ); \
        if (delta_coded) \
            xs(4, name.delta_q, delta_q, 0, ); \
        else \
            delta_q = 0; \
        current->name = delta_q; \
    } while (0)

Definition at line 367 of file cbs_vp9.c.

prob [1/2]

#define prob	(		name,
			subs,
			...
	)

Value:

        do { \
        uint8_t prob_coded; \
        uint8_t prob; \
        xf(1, name.prob_coded, prob_coded, subs, __VA_ARGS__); \
        if (prob_coded) \
            xf(8, name.prob, prob, subs, __VA_ARGS__); \
        else \
            prob = 255; \
        current->name = prob; \
    } while (0)

Definition at line 373 of file cbs_vp9.c.

fixed [1/2]

#define fixed	(		width,
			name,
			value
	)

Value:

        do { \
        av_unused uint32_t fixed_value; \
        CHECK(ff_cbs_read_unsigned(ctx, rw, width, #name, \
                                   0, &fixed_value, value, value)); \
    } while (0)

Definition at line 379 of file cbs_vp9.c.

infer [1/2]

#define infer	(		name,
			value
	)

Value:

        do { \
        current->name = value; \
    } while (0)

Definition at line 384 of file cbs_vp9.c.

byte_alignment [1/2]

#define byte_alignment

(

rw

)

(get_bits_count(rw) % 8)

Definition at line 393 of file cbs_vp9.c.

WRITE

#define WRITE

Definition at line 344 of file cbs_vp9.c.

READWRITE [2/2]

#define READWRITE   write

Definition at line 345 of file cbs_vp9.c.

RWContext [2/2]

#define RWContext   PutBitContext

Definition at line 346 of file cbs_vp9.c.

xf [2/2]

#define xf	(		width,
			name,
			var,
			subs,
			...
	)

Value:

        do { \
        CHECK(ff_cbs_write_unsigned(ctx, rw, width, #name, \
                                    SUBSCRIPTS(subs, __VA_ARGS__), \
                                    var, 0, (1 << width) - 1)); \
    } while (0)

Definition at line 348 of file cbs_vp9.c.

xs [2/2]

#define xs	(		width,
			name,
			var,
			subs,
			...
	)

Value:

        do { \
        CHECK(cbs_vp9_write_s(ctx, rw, width, #name, \
                              SUBSCRIPTS(subs, __VA_ARGS__), var)); \
    } while (0)

Definition at line 353 of file cbs_vp9.c.

increment [2/2]

#define increment	(		name,
			min,
			max
	)

Value:

        do { \
        CHECK(cbs_vp9_write_increment(ctx, rw, min, max, #name, current->name)); \
    } while (0)

Definition at line 358 of file cbs_vp9.c.

fle [2/2]

#define fle	(		width,
			name,
			subs,
			...
	)

Value:

        do { \
        CHECK(cbs_vp9_write_le(ctx, rw, width, #name, \
                               SUBSCRIPTS(subs, __VA_ARGS__), current->name)); \
    } while (0)

Definition at line 362 of file cbs_vp9.c.

delta_q [2/2]

#define delta_q

(

name

)

Value:

        do { \
        xf(1, name.delta_coded, !!current->name, 0, ); \
        if (current->name) \
            xs(4, name.delta_q, current->name, 0, ); \
    } while (0)

Definition at line 367 of file cbs_vp9.c.

prob [2/2]

#define prob	(		name,
			subs,
			...
	)

Value:

        do { \
        xf(1, name.prob_coded, current->name != 255, subs, __VA_ARGS__); \
        if (current->name != 255) \
            xf(8, name.prob, current->name, subs, __VA_ARGS__); \
    } while (0)

Definition at line 373 of file cbs_vp9.c.

fixed [2/2]

#define fixed	(		width,
			name,
			value
	)

Value:

        do { \
        CHECK(ff_cbs_write_unsigned(ctx, rw, width, #name, \
                                    0, value, value, value)); \
    } while (0)

Definition at line 379 of file cbs_vp9.c.

infer [2/2]

#define infer	(		name,
			value
	)

Value:

        do { \
        if (current->name != (value)) { \
            av_log(ctx->log_ctx, AV_LOG_WARNING, "Warning: " \
                   "%s does not match inferred value: " \
                   "%"PRId64", but should be %"PRId64".\n", \
                   #name, (int64_t)current->name, (int64_t)(value)); \
        } \
    } while (0)

Definition at line 384 of file cbs_vp9.c.

byte_alignment [2/2]

#define byte_alignment

(

rw

)

(put_bits_count(rw) % 8)

Definition at line 393 of file cbs_vp9.c.

Function Documentation

cbs_vp9_read_s()

static int cbs_vp9_read_s ( CodedBitstreamContext *  ctx, GetBitContext *  gbc, int  width, const char *  name, const int *  subscripts, int32_t *  write_to  )

static

Definition at line 27 of file cbs_vp9.c.

cbs_vp9_write_s()

static int cbs_vp9_write_s ( CodedBitstreamContext *  ctx, PutBitContext *  pbc, int  width, const char *  name, const int *  subscripts, int32_t  value  )

static

Definition at line 64 of file cbs_vp9.c.

cbs_vp9_read_increment()

static int cbs_vp9_read_increment ( CodedBitstreamContext *  ctx, GetBitContext *  gbc, uint32_t  range_min, uint32_t  range_max, const char *  name, uint32_t *  write_to  )

static

Definition at line 95 of file cbs_vp9.c.

cbs_vp9_write_increment()

static int cbs_vp9_write_increment ( CodedBitstreamContext *  ctx, PutBitContext *  pbc, uint32_t  range_min, uint32_t  range_max, const char *  name, uint32_t  value  )

static

Definition at line 131 of file cbs_vp9.c.

cbs_vp9_read_le()

static int cbs_vp9_read_le ( CodedBitstreamContext *  ctx, GetBitContext *  gbc, int  width, const char *  name, const int *  subscripts, uint32_t *  write_to  )

static

Definition at line 172 of file cbs_vp9.c.

cbs_vp9_write_le()

static int cbs_vp9_write_le ( CodedBitstreamContext *  ctx, PutBitContext *  pbc, int  width, const char *  name, const int *  subscripts, uint32_t  value  )

static

Definition at line 210 of file cbs_vp9.c.

cbs_vp9_split_fragment()

static int cbs_vp9_split_fragment ( CodedBitstreamContext *  ctx, CodedBitstreamFragment *  frag, int  header  )

static

Definition at line 411 of file cbs_vp9.c.

cbs_vp9_free_frame()

static void cbs_vp9_free_frame ( void *  opaque, uint8_t *  content  )

static

Definition at line 482 of file cbs_vp9.c.

Referenced by cbs_vp9_read_unit().

cbs_vp9_read_unit()

static int cbs_vp9_read_unit ( CodedBitstreamContext *  ctx, CodedBitstreamUnit *  unit  )

static

Definition at line 489 of file cbs_vp9.c.

cbs_vp9_write_unit()

static int cbs_vp9_write_unit ( CodedBitstreamContext *  ctx, CodedBitstreamUnit *  unit, PutBitContext *  pbc  )

static

Definition at line 529 of file cbs_vp9.c.

cbs_vp9_assemble_fragment()

static int cbs_vp9_assemble_fragment ( CodedBitstreamContext *  ctx, CodedBitstreamFragment *  frag  )

static

Definition at line 555 of file cbs_vp9.c.

Variable Documentation

ff_cbs_type_vp9

const CodedBitstreamType ff_cbs_type_vp9

Initial value:

= {
    .codec_id          = AV_CODEC_ID_VP9,
 
    .priv_data_size    = sizeof(CodedBitstreamVP9Context),
 
    .split_fragment    = &cbs_vp9_split_fragment,
    .read_unit         = &cbs_vp9_read_unit,
    .write_unit        = &cbs_vp9_write_unit,
    .assemble_fragment = &cbs_vp9_assemble_fragment,
}

Definition at line 645 of file cbs_vp9.c.