#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "internal.h"
#include "put_bits.h"
#include "bytestream.h"
#include "wavpackenc.h"
#include "wavpack.h"

Data Structures
struct	WavPackExtraInfo

struct	WavPackWords

struct	WavPackEncodeContext

Macros
#define	BITSTREAM_WRITER_LE

#define	UPDATE_WEIGHT(weight, delta, source, result)

#define	APPLY_WEIGHT_F(weight, sample)

#define	APPLY_WEIGHT_I(weight, sample) (((weight) * (sample) + 512) >> 10)

#define	APPLY_WEIGHT(weight, sample)

#define	CLEAR(destin) memset(&destin, 0, sizeof(destin));

#define	SHIFT_LSB 13

#define	SHIFT_MASK (0x1FU << SHIFT_LSB)

#define	MAG_LSB 18

#define	MAG_MASK (0x1FU << MAG_LSB)

#define	SRATE_LSB 23

#define	SRATE_MASK (0xFU << SRATE_LSB)

#define	EXTRA_TRY_DELTAS 1

#define	EXTRA_ADJUST_DELTAS 2

#define	EXTRA_SORT_FIRST 4

#define	EXTRA_BRANCHES 8

#define	EXTRA_SORT_LAST 16

#define	FLOAT_SHIFT_ONES 1

#define	FLOAT_SHIFT_SAME 2

#define	FLOAT_SHIFT_SENT 4

#define	FLOAT_ZEROS_SENT 8

#define	FLOAT_NEG_ZEROS 0x10

#define	FLOAT_EXCEPTIONS 0x20

#define	get_mantissa(f) ((f) & 0x7fffff)

#define	get_exponent(f) (((f) >> 23) & 0xff)

#define	get_sign(f) (((f) >> 31) & 0x1)

#define	count_bits(av) ((av) ? 32 - ff_clz(av) : 0)

#define	update_weight_d2(weight, delta, source, result)

#define	update_weight_clip_d2(weight, delta, source, result)

#define	WRITE_DECWEIGHT(type)

#define	WRITE_DECSAMPLE(type)

#define	WRITE_CHAN_ENTROPY(chan)

#define	COPY_SAMPLES(type, offset, shift)

#define	OFFSET(x) offsetof(WavPackEncodeContext, x)

#define	FLAGS AV_OPT_FLAG_ENCODING_PARAM \| AV_OPT_FLAG_AUDIO_PARAM

Functions
static av_cold int	wavpack_encode_init (AVCodecContext *avctx)

static void	shift_mono (int32_t *samples, int nb_samples, int shift)

static void	shift_stereo (int32_t left, int32_t right, int nb_samples, int shift)

static void	process_float (WavPackEncodeContext s, int32_t sample)

static int	scan_float (WavPackEncodeContext s, int32_t samples_l, int32_t *samples_r, int nb_samples)

static void	scan_int23 (WavPackEncodeContext s, int32_t samples_l, int32_t *samples_r, int nb_samples)

static int	scan_int32 (WavPackEncodeContext s, int32_t samples_l, int32_t *samples_r, int nb_samples)

static int8_t	store_weight (int weight)

static int	restore_weight (int8_t weight)

static int	log2s (int32_t value)

static void	decorr_mono (int32_t in_samples, int32_t out_samples, int nb_samples, struct Decorr *dpp, int dir)

static void	reverse_mono_decorr (struct Decorr *dpp)

static uint32_t	log2sample (uint32_t v, int limit, uint32_t *result)

static uint32_t	log2mono (int32_t *samples, int nb_samples, int limit)

static uint32_t	log2stereo (int32_t samples_l, int32_t samples_r, int nb_samples, int limit)

static void	decorr_mono_buffer (int32_t samples, int32_t outsamples, int nb_samples, struct Decorr *dpp, int tindex)

static void	recurse_mono (WavPackEncodeContext s, WavPackExtraInfo info, int depth, int delta, uint32_t input_bits)

static void	sort_mono (WavPackEncodeContext s, WavPackExtraInfo info)

static void	delta_mono (WavPackEncodeContext s, WavPackExtraInfo info)

static int	allocate_buffers2 (WavPackEncodeContext *s, int nterms)

static int	allocate_buffers (WavPackEncodeContext *s)

static void	analyze_mono (WavPackEncodeContext s, int32_t samples, int do_samples)

static void	scan_word (WavPackEncodeContext s, WvChannel c, int32_t *samples, int nb_samples, int dir)

static int	wv_mono (WavPackEncodeContext s, int32_t samples, int no_history, int do_samples)

static void	decorr_stereo (int32_t in_left, int32_t in_right, int32_t out_left, int32_t out_right, int nb_samples, struct Decorr *dpp, int dir)

static void	reverse_decorr (struct Decorr *dpp)

static void	decorr_stereo_quick (int32_t in_left, int32_t in_right, int32_t out_left, int32_t out_right, int nb_samples, struct Decorr *dpp)

static void	decorr_stereo_buffer (WavPackExtraInfo info, int32_t in_left, int32_t in_right, int32_t out_left, int32_t *out_right, int nb_samples, int tindex)

static void	sort_stereo (WavPackEncodeContext s, WavPackExtraInfo info)

static void	delta_stereo (WavPackEncodeContext s, WavPackExtraInfo info)

static void	recurse_stereo (WavPackEncodeContext s, WavPackExtraInfo info, int depth, int delta, uint32_t input_bits)

static void	analyze_stereo (WavPackEncodeContext s, int32_t in_left, int32_t *in_right, int do_samples)

static int	wv_stereo (WavPackEncodeContext s, int32_t samples_l, int32_t *samples_r, int no_history, int do_samples)

static void	encode_flush (WavPackEncodeContext *s)

static void	wavpack_encode_sample (WavPackEncodeContext s, WvChannel c, int32_t sample)

static void	pack_int32 (WavPackEncodeContext s, int32_t samples_l, int32_t *samples_r, int nb_samples)

static void	pack_float_sample (WavPackEncodeContext s, int32_t sample)

static void	pack_float (WavPackEncodeContext s, int32_t samples_l, int32_t *samples_r, int nb_samples)

static void	decorr_stereo_pass2 (struct Decorr dpp, int32_t samples_l, int32_t *samples_r, int nb_samples)

static void	decorr_stereo_pass_id2 (struct Decorr dpp, int32_t samples_l, int32_t *samples_r, int nb_samples)

static void	put_metadata_block (PutByteContext *pb, int flags, int size)

static int	wavpack_encode_block (WavPackEncodeContext s, int32_t samples_l, int32_t samples_r, uint8_t out, int out_size)

static void	fill_buffer (WavPackEncodeContext s, const int8_t src, int32_t *dst, int nb_samples)

static void	set_samplerate (WavPackEncodeContext *s)

static int	wavpack_encode_frame (AVCodecContext avctx, AVPacket avpkt, const AVFrame frame, int got_packet_ptr)

static av_cold int	wavpack_encode_close (AVCodecContext *avctx)

Variables
static const AVOption	options []

static const AVClass	wavpack_encoder_class

AVCodec	ff_wavpack_encoder

Macro Definition Documentation

◆ BITSTREAM_WRITER_LE

#define BITSTREAM_WRITER_LE

Definition at line 21 of file wavpackenc.c.

◆ UPDATE_WEIGHT

#define UPDATE_WEIGHT	(	weight,
		delta,
		source,
		result
	)

Value:

    if ((source) && (result)) { \
        int32_t s = (int32_t) ((source) ^ (result)) >> 31; \
        weight = ((delta) ^ s) + ((weight) - s); \
    }

Definition at line 32 of file wavpackenc.c.

◆ APPLY_WEIGHT_F

#define APPLY_WEIGHT_F	(	weight,
		sample
	)

Value:

((((((sample) & 0xffff) * (weight)) >> 9) + \

((((sample) & ~0xffff) >> 9) * (weight)) + 1) >> 1)

Definition at line 38 of file wavpackenc.c.

◆ APPLY_WEIGHT_I

#define APPLY_WEIGHT_I	(	weight,
		sample
	)	(((weight) * (sample) + 512) >> 10)

Definition at line 41 of file wavpackenc.c.

◆ APPLY_WEIGHT

#define APPLY_WEIGHT	(	weight,
		sample
	)

Value:

((sample) != (short) (sample) ? \

APPLY_WEIGHT_F(weight, sample) : APPLY_WEIGHT_I (weight, sample))

Definition at line 43 of file wavpackenc.c.

◆ CLEAR

#define CLEAR ( destin ) memset(&destin, 0, sizeof(destin));

Definition at line 46 of file wavpackenc.c.

◆ SHIFT_LSB

#define SHIFT_LSB 13

Definition at line 48 of file wavpackenc.c.

◆ SHIFT_MASK

#define SHIFT_MASK (0x1FU << SHIFT_LSB)

Definition at line 49 of file wavpackenc.c.

◆ MAG_LSB

#define MAG_LSB 18

Definition at line 51 of file wavpackenc.c.

◆ MAG_MASK

#define MAG_MASK (0x1FU << MAG_LSB)

Definition at line 52 of file wavpackenc.c.

◆ SRATE_LSB

#define SRATE_LSB 23

Definition at line 54 of file wavpackenc.c.

◆ SRATE_MASK

#define SRATE_MASK (0xFU << SRATE_LSB)

Definition at line 55 of file wavpackenc.c.

◆ EXTRA_TRY_DELTAS

#define EXTRA_TRY_DELTAS 1

Definition at line 57 of file wavpackenc.c.

◆ EXTRA_ADJUST_DELTAS

#define EXTRA_ADJUST_DELTAS 2

Definition at line 58 of file wavpackenc.c.

◆ EXTRA_SORT_FIRST

#define EXTRA_SORT_FIRST 4

Definition at line 59 of file wavpackenc.c.

◆ EXTRA_BRANCHES

#define EXTRA_BRANCHES 8

Definition at line 60 of file wavpackenc.c.

◆ EXTRA_SORT_LAST

#define EXTRA_SORT_LAST 16

Definition at line 61 of file wavpackenc.c.

◆ FLOAT_SHIFT_ONES

#define FLOAT_SHIFT_ONES 1

Definition at line 212 of file wavpackenc.c.

◆ FLOAT_SHIFT_SAME

#define FLOAT_SHIFT_SAME 2

Definition at line 213 of file wavpackenc.c.

◆ FLOAT_SHIFT_SENT

#define FLOAT_SHIFT_SENT 4

Definition at line 214 of file wavpackenc.c.

◆ FLOAT_ZEROS_SENT

#define FLOAT_ZEROS_SENT 8

Definition at line 215 of file wavpackenc.c.

◆ FLOAT_NEG_ZEROS

#define FLOAT_NEG_ZEROS 0x10

Definition at line 216 of file wavpackenc.c.

◆ FLOAT_EXCEPTIONS

#define FLOAT_EXCEPTIONS 0x20

Definition at line 217 of file wavpackenc.c.

◆ get_mantissa

#define get_mantissa ( f ) ((f) & 0x7fffff)

Definition at line 219 of file wavpackenc.c.

◆ get_exponent

#define get_exponent ( f ) (((f) >> 23) & 0xff)

Definition at line 220 of file wavpackenc.c.

◆ get_sign

#define get_sign ( f ) (((f) >> 31) & 0x1)

Definition at line 221 of file wavpackenc.c.

◆ count_bits

#define count_bits ( av ) ((av) ? 32 - ff_clz(av) : 0)

Definition at line 640 of file wavpackenc.c.

◆ update_weight_d2

#define update_weight_d2	(	weight,
		delta,
		source,
		result
	)

Value:

if (source && result) \

weight -= (((source ^ result) >> 29) & 4) - 2;

Definition at line 2337 of file wavpackenc.c.

◆ update_weight_clip_d2

#define update_weight_clip_d2	(	weight,
		delta,
		source,
		result
	)

Value:

    if (source && result) { \
        const int32_t s = (source ^ result) >> 31; \
        if ((weight = (weight ^ s) + (2 - s)) > 1024) weight = 1024; \
        weight = (weight ^ s) - s; \
    }

Definition at line 2341 of file wavpackenc.c.

◆ WRITE_DECWEIGHT

#define WRITE_DECWEIGHT ( type )

Value:

        do {            \
        temp = store_weight(type);    \
        bytestream2_put_byte(&pb, temp);      \
        type = restore_weight(temp);  \
    } while (0)

◆ WRITE_DECSAMPLE

#define WRITE_DECSAMPLE ( type )

Value:

        do {        \
        temp = log2s(type);               \
        type = wp_exp2(temp);             \
        bytestream2_put_le16(&pb, temp);  \
    } while (0)

◆ WRITE_CHAN_ENTROPY

#define WRITE_CHAN_ENTROPY ( chan )

Value:

        do {               \
        for (i = 0; i < 3; i++) {                   \
            temp = wp_log2(s->w.c[chan].median[i]); \
            bytestream2_put_le16(&pb, temp);        \
            s->w.c[chan].median[i] = wp_exp2(temp); \
        }                                           \
    } while (0)

◆ COPY_SAMPLES

#define COPY_SAMPLES	(	type,
		offset,
		shift
	)

Value:

        do {            \
        const type *sptr = (const type *)src;             \
        for (i = 0; i < nb_samples; i++)                  \
            dst[i] = (sptr[i] - offset) >> shift;         \
    } while (0)

◆ OFFSET

#define OFFSET ( x ) offsetof(WavPackEncodeContext, x)

Definition at line 2945 of file wavpackenc.c.

◆ FLAGS

#define FLAGS AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM

Definition at line 2946 of file wavpackenc.c.

Function Documentation

◆ wavpack_encode_init()

static av_cold int wavpack_encode_init ( AVCodecContext * avctx )

static

Definition at line 125 of file wavpackenc.c.

◆ shift_mono()

static void shift_mono	(	int32_t *	samples,
		int	nb_samples,
		int	shift
	)

static

Definition at line 195 of file wavpackenc.c.

Referenced by scan_float(), scan_int23(), scan_int32(), and wavpack_encode_block().

◆ shift_stereo()

static void shift_stereo	(	int32_t *	left,
		int32_t *	right,
		int	nb_samples,
		int	shift
	)

static

Definition at line 202 of file wavpackenc.c.

Referenced by scan_float(), scan_int23(), scan_int32(), and wavpack_encode_block().

◆ process_float()

static void process_float	(	WavPackEncodeContext *	s,
		int32_t *	sample
	)

static

Definition at line 223 of file wavpackenc.c.

Referenced by scan_float().

◆ scan_float()

static int scan_float	(	WavPackEncodeContext *	s,
		int32_t *	samples_l,
		int32_t *	samples_r,
		int	nb_samples
	)

static

Definition at line 264 of file wavpackenc.c.

Referenced by wavpack_encode_block().

◆ scan_int23()

static void scan_int23	(	WavPackEncodeContext *	s,
		int32_t *	samples_l,
		int32_t *	samples_r,
		int	nb_samples
	)

static

Definition at line 350 of file wavpackenc.c.

Referenced by wavpack_encode_block().

◆ scan_int32()

static int scan_int32	(	WavPackEncodeContext *	s,
		int32_t *	samples_l,
		int32_t *	samples_r,
		int	nb_samples
	)

static

Definition at line 431 of file wavpackenc.c.

Referenced by wavpack_encode_block().

◆ store_weight()

static int8_t store_weight ( int weight )

static

Definition at line 521 of file wavpackenc.c.

Referenced by decorr_mono(), decorr_stereo(), decorr_stereo_quick(), and wavpack_encode_block().

◆ restore_weight()

static int restore_weight ( int8_t weight )

static

Definition at line 530 of file wavpackenc.c.

Referenced by decorr_mono(), decorr_stereo(), and decorr_stereo_quick().

◆ log2s()

static int log2s ( int32_t value )

static

Definition at line 540 of file wavpackenc.c.

Referenced by decorr_mono(), decorr_stereo(), and decorr_stereo_quick().

◆ decorr_mono()

static void decorr_mono	(	int32_t *	in_samples,
		int32_t *	out_samples,
		int	nb_samples,
		struct Decorr *	dpp,
		int	dir
	)

static

Definition at line 545 of file wavpackenc.c.

Referenced by analyze_mono(), decorr_mono_buffer(), and wv_mono().

◆ reverse_mono_decorr()

static void reverse_mono_decorr ( struct Decorr * dpp )

static

Definition at line 608 of file wavpackenc.c.

Referenced by decorr_mono_buffer(), and wv_mono().

◆ log2sample()

static uint32_t log2sample	(	uint32_t	v,
		int	limit,
		uint32_t *	result
	)

static

Definition at line 642 of file wavpackenc.c.

Referenced by log2mono(), and log2stereo().

◆ log2mono()

static uint32_t log2mono	(	int32_t *	samples,
		int	nb_samples,
		int	limit
	)

static

Definition at line 658 of file wavpackenc.c.

Referenced by analyze_mono(), delta_mono(), recurse_mono(), sort_mono(), and wv_mono().

◆ log2stereo()

static uint32_t log2stereo	(	int32_t *	samples_l,
		int32_t *	samples_r,
		int	nb_samples,
		int	limit
	)

static

Definition at line 668 of file wavpackenc.c.

Referenced by analyze_stereo(), delta_stereo(), recurse_stereo(), sort_stereo(), and wv_stereo().

◆ decorr_mono_buffer()

static void decorr_mono_buffer	(	int32_t *	samples,
		int32_t *	outsamples,
		int	nb_samples,
		struct Decorr *	dpp,
		int	tindex
	)

static

Definition at line 680 of file wavpackenc.c.

Referenced by delta_mono(), recurse_mono(), and sort_mono().

◆ recurse_mono()

static void recurse_mono	(	WavPackEncodeContext *	s,
		WavPackExtraInfo *	info,
		int	depth,
		int	delta,
		uint32_t	input_bits
	)

static

Definition at line 719 of file wavpackenc.c.

Referenced by analyze_mono().

◆ sort_mono()

static void sort_mono	(	WavPackEncodeContext *	s,
		WavPackExtraInfo *	info
	)

static

Definition at line 782 of file wavpackenc.c.

Referenced by analyze_mono().

◆ delta_mono()

static void delta_mono	(	WavPackEncodeContext *	s,
		WavPackExtraInfo *	info
	)

static

Definition at line 829 of file wavpackenc.c.

Referenced by analyze_mono().

◆ allocate_buffers2()

static int allocate_buffers2	(	WavPackEncodeContext *	s,
		int	nterms
	)

static

Definition at line 882 of file wavpackenc.c.

Referenced by analyze_mono(), and analyze_stereo().

◆ allocate_buffers()

static int allocate_buffers ( WavPackEncodeContext * s )

static

Definition at line 902 of file wavpackenc.c.

Referenced by wv_mono(), and wv_stereo().

◆ analyze_mono()

static void analyze_mono	(	WavPackEncodeContext *	s,
		int32_t *	samples,
		int	do_samples
	)

static

Definition at line 932 of file wavpackenc.c.

Referenced by wv_mono().

◆ scan_word()

static void scan_word	(	WavPackEncodeContext *	s,
		WvChannel *	c,
		int32_t *	samples,
		int	nb_samples,
		int	dir
	)

static

Definition at line 984 of file wavpackenc.c.

Referenced by wv_mono(), and wv_stereo().

◆ wv_mono()

static int wv_mono	(	WavPackEncodeContext *	s,
		int32_t *	samples,
		int	no_history,
		int	do_samples
	)

static

Definition at line 1016 of file wavpackenc.c.

Referenced by wavpack_encode_block().

◆ decorr_stereo()

static void decorr_stereo	(	int32_t *	in_left,
		int32_t *	in_right,
		int32_t *	out_left,
		int32_t *	out_right,
		int	nb_samples,
		struct Decorr *	dpp,
		int	dir
	)

static

Definition at line 1122 of file wavpackenc.c.

Referenced by analyze_stereo(), decorr_stereo_buffer(), and wv_stereo().

◆ reverse_decorr()

static void reverse_decorr ( struct Decorr * dpp )

static

Definition at line 1315 of file wavpackenc.c.

Referenced by decorr_stereo_buffer(), and wv_stereo().

◆ decorr_stereo_quick()

static void decorr_stereo_quick	(	int32_t *	in_left,
		int32_t *	in_right,
		int32_t *	out_left,
		int32_t *	out_right,
		int	nb_samples,
		struct Decorr *	dpp
	)

static

Definition at line 1359 of file wavpackenc.c.

Referenced by analyze_stereo(), decorr_stereo_buffer(), and wv_stereo().

◆ decorr_stereo_buffer()

static void decorr_stereo_buffer	(	WavPackExtraInfo *	info,
		int32_t *	in_left,
		int32_t *	in_right,
		int32_t *	out_left,
		int32_t *	out_right,
		int	nb_samples,
		int	tindex
	)

static

Definition at line 1495 of file wavpackenc.c.

Referenced by delta_stereo(), recurse_stereo(), and sort_stereo().

◆ sort_stereo()

static void sort_stereo	(	WavPackEncodeContext *	s,
		WavPackExtraInfo *	info
	)

static

Definition at line 1547 of file wavpackenc.c.

Referenced by analyze_stereo().

◆ delta_stereo()

static void delta_stereo	(	WavPackEncodeContext *	s,
		WavPackExtraInfo *	info
	)

static

Definition at line 1604 of file wavpackenc.c.

Referenced by analyze_stereo().

◆ recurse_stereo()

static void recurse_stereo	(	WavPackEncodeContext *	s,
		WavPackExtraInfo *	info,
		int	depth,
		int	delta,
		uint32_t	input_bits
	)

static

Definition at line 1664 of file wavpackenc.c.

Referenced by analyze_stereo().

◆ analyze_stereo()

static void analyze_stereo	(	WavPackEncodeContext *	s,
		int32_t *	in_left,
		int32_t *	in_right,
		int	do_samples
	)

static

Definition at line 1737 of file wavpackenc.c.

Referenced by wv_stereo().

◆ wv_stereo()

static int wv_stereo	(	WavPackEncodeContext *	s,
		int32_t *	samples_l,
		int32_t *	samples_r,
		int	no_history,
		int	do_samples
	)

static

Definition at line 1806 of file wavpackenc.c.

Referenced by wavpack_encode_block().

◆ encode_flush()

static void encode_flush ( WavPackEncodeContext * s )

static

Definition at line 1966 of file wavpackenc.c.

Referenced by wavpack_encode_block(), and wavpack_encode_sample().

◆ wavpack_encode_sample()

static void wavpack_encode_sample	(	WavPackEncodeContext *	s,
		WvChannel *	c,
		int32_t	sample
	)

static

Definition at line 2039 of file wavpackenc.c.

Referenced by wavpack_encode_block().

◆ pack_int32()

static void pack_int32	(	WavPackEncodeContext *	s,
		int32_t *	samples_l,
		int32_t *	samples_r,
		int	nb_samples
	)

static

Definition at line 2132 of file wavpackenc.c.

Referenced by wavpack_encode_block().

◆ pack_float_sample()

static void pack_float_sample	(	WavPackEncodeContext *	s,
		int32_t *	sample
	)

static

Definition at line 2157 of file wavpackenc.c.

Referenced by pack_float().

◆ pack_float()

static void pack_float	(	WavPackEncodeContext *	s,
		int32_t *	samples_l,
		int32_t *	samples_r,
		int	nb_samples
	)

static

Definition at line 2212 of file wavpackenc.c.

Referenced by wavpack_encode_block().

◆ decorr_stereo_pass2()

static void decorr_stereo_pass2	(	struct Decorr *	dpp,
		int32_t *	samples_l,
		int32_t *	samples_r,
		int	nb_samples
	)

static

Definition at line 2229 of file wavpackenc.c.

Referenced by wavpack_encode_block().

◆ decorr_stereo_pass_id2()

static void decorr_stereo_pass_id2	(	struct Decorr *	dpp,
		int32_t *	samples_l,
		int32_t *	samples_r,
		int	nb_samples
	)

static

Definition at line 2348 of file wavpackenc.c.

Referenced by wavpack_encode_block().

◆ put_metadata_block()

static void put_metadata_block	(	PutByteContext *	pb,
		int	flags,
		int	size
	)

static

Definition at line 2457 of file wavpackenc.c.

Referenced by wavpack_encode_block().

◆ wavpack_encode_block()

static int wavpack_encode_block	(	WavPackEncodeContext *	s,
		int32_t *	samples_l,
		int32_t *	samples_r,
		uint8_t *	out,
		int	out_size
	)

static

Definition at line 2466 of file wavpackenc.c.

Referenced by wavpack_encode_frame().

◆ fill_buffer()

static void fill_buffer	(	WavPackEncodeContext *	s,
		const int8_t *	src,
		int32_t *	dst,
		int	nb_samples
	)

static

Definition at line 2810 of file wavpackenc.c.

Referenced by wavpack_encode_frame().

◆ set_samplerate()

static void set_samplerate ( WavPackEncodeContext * s )

static

Definition at line 2839 of file wavpackenc.c.

Referenced by wavpack_encode_frame().

◆ wavpack_encode_frame()

static int wavpack_encode_frame	(	AVCodecContext *	avctx,
		AVPacket *	avpkt,
		const AVFrame *	frame,
		int *	got_packet_ptr
	)

static

Definition at line 2851 of file wavpackenc.c.

◆ wavpack_encode_close()

static av_cold int wavpack_encode_close ( AVCodecContext * avctx )

static

Definition at line 2911 of file wavpackenc.c.

Variable Documentation

◆ options

const AVOption options[]

static

Initial value:

= {
    { "joint_stereo",  "", OFFSET(joint), AV_OPT_TYPE_BOOL, {.i64=-1}, -1, 1, FLAGS },
    { "optimize_mono", "", OFFSET(optimize_mono), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
    { NULL },
}

Definition at line 2947 of file wavpackenc.c.

◆ wavpack_encoder_class

const AVClass wavpack_encoder_class

static

Initial value:

= {
    .class_name = "WavPack encoder",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 2953 of file wavpackenc.c.

◆ ff_wavpack_encoder

AVCodec ff_wavpack_encoder

Initial value:

= {
    .name           = "wavpack",
    .long_name      = NULL_IF_CONFIG_SMALL("WavPack"),
    .type           = AVMEDIA_TYPE_AUDIO,
    .id             = AV_CODEC_ID_WAVPACK,
    .priv_data_size = sizeof(WavPackEncodeContext),
    .priv_class     = &wavpack_encoder_class,
    .init           = wavpack_encode_init,
    .encode2        = wavpack_encode_frame,
    .close          = wavpack_encode_close,
    .capabilities   = AV_CODEC_CAP_SMALL_LAST_FRAME,
    .sample_fmts    = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_U8P,
                                                     AV_SAMPLE_FMT_S16P,
                                                     AV_SAMPLE_FMT_S32P,
                                                     AV_SAMPLE_FMT_FLTP,
                                                     AV_SAMPLE_FMT_NONE },
}

Definition at line 2960 of file wavpackenc.c.

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ BITSTREAM_WRITER_LE

◆ UPDATE_WEIGHT

◆ APPLY_WEIGHT_F

◆ APPLY_WEIGHT_I

◆ APPLY_WEIGHT

◆ CLEAR

◆ SHIFT_LSB

◆ SHIFT_MASK

◆ MAG_LSB

◆ MAG_MASK

◆ SRATE_LSB

◆ SRATE_MASK

◆ EXTRA_TRY_DELTAS

◆ EXTRA_ADJUST_DELTAS

◆ EXTRA_SORT_FIRST

◆ EXTRA_BRANCHES

◆ EXTRA_SORT_LAST

◆ FLOAT_SHIFT_ONES

◆ FLOAT_SHIFT_SAME

◆ FLOAT_SHIFT_SENT

◆ FLOAT_ZEROS_SENT

◆ FLOAT_NEG_ZEROS

◆ FLOAT_EXCEPTIONS

◆ get_mantissa

◆ get_exponent

◆ get_sign

◆ count_bits

◆ update_weight_d2

◆ update_weight_clip_d2

◆ WRITE_DECWEIGHT

◆ WRITE_DECSAMPLE

◆ WRITE_CHAN_ENTROPY

◆ COPY_SAMPLES

◆ OFFSET

◆ FLAGS

Function Documentation

◆ wavpack_encode_init()

◆ shift_mono()

◆ shift_stereo()

◆ process_float()

◆ scan_float()

◆ scan_int23()

◆ scan_int32()

◆ store_weight()

◆ restore_weight()

◆ log2s()

◆ decorr_mono()

◆ reverse_mono_decorr()

◆ log2sample()

◆ log2mono()

◆ log2stereo()

◆ decorr_mono_buffer()

◆ recurse_mono()

◆ sort_mono()

◆ delta_mono()

◆ allocate_buffers2()

◆ allocate_buffers()

◆ analyze_mono()

◆ scan_word()

◆ wv_mono()

◆ decorr_stereo()

◆ reverse_decorr()

◆ decorr_stereo_quick()

◆ decorr_stereo_buffer()

◆ sort_stereo()

◆ delta_stereo()

◆ recurse_stereo()

◆ analyze_stereo()

◆ wv_stereo()

◆ encode_flush()

◆ wavpack_encode_sample()

◆ pack_int32()

◆ pack_float_sample()

◆ pack_float()

◆ decorr_stereo_pass2()