FFmpeg
Data Structures | Macros | Enumerations | Functions | Variables
flacenc.c File Reference
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/crc.h"
#include "libavutil/intmath.h"
#include "libavutil/md5.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "bswapdsp.h"
#include "codec_internal.h"
#include "encode.h"
#include "put_bits.h"
#include "lpc.h"
#include "flac.h"
#include "flacdata.h"
#include "flacencdsp.h"

Go to the source code of this file.

Data Structures

struct  CompressionOptions
 
struct  RiceContext
 
struct  FlacSubframe
 
struct  FlacFrame
 
struct  FlacEncodeContext
 

Macros

#define FLAC_SUBFRAME_CONSTANT   0
 
#define FLAC_SUBFRAME_VERBATIM   1
 
#define FLAC_SUBFRAME_FIXED   8
 
#define FLAC_SUBFRAME_LPC   32
 
#define MAX_FIXED_ORDER   4
 
#define MAX_PARTITION_ORDER   8
 
#define MAX_PARTITIONS   (1 << MAX_PARTITION_ORDER)
 
#define MAX_LPC_PRECISION   15
 
#define MIN_LPC_SHIFT   0
 
#define MAX_LPC_SHIFT   15
 
#define COPY_SAMPLES(bits)
 
#define rice_encode_count(sum, n, k)   (((n)*((k)+1))+((sum-(n>>1))>>(k)))
 
#define ENCODE_RESIDUAL_FIXED_WITH_RESIDUAL_LIMIT()
 
#define LPC_ENCODE_WITH_RESIDUAL_LIMIT()
 
#define DEFAULT_TO_VERBATIM()
 
#define FLAGS   AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_AUDIO_PARAM
 

Enumerations

enum  CodingMode { CODING_MODE_RICE = 4, CODING_MODE_RICE2 = 5 }
 

Functions

static void write_streaminfo (FlacEncodeContext *s, uint8_t *header)
 Write streaminfo metadata block to byte array. More...
 
static int flac_get_max_frame_size (int blocksize, int ch, int bps)
 Calculate an estimate for the maximum frame size based on verbatim mode. More...
 
static int select_blocksize (int samplerate, int block_time_ms)
 Set blocksize based on samplerate. More...
 
static av_cold void dprint_compression_options (FlacEncodeContext *s)
 
static av_cold int flac_encode_init (AVCodecContext *avctx)
 
static void init_frame (FlacEncodeContext *s, int nb_samples)
 
static void copy_samples (FlacEncodeContext *s, const void *samples)
 Copy channel-interleaved input samples into separate subframes. More...
 
static uint64_t rice_count_exact (const int32_t *res, int n, int k)
 
static uint64_t subframe_count_exact (FlacEncodeContext *s, FlacSubframe *sub, int pred_order)
 
static int find_optimal_param (uint64_t sum, int n, int max_param)
 Solve for d/dk(rice_encode_count) = n-((sum-(n>>1))>>(k+1)) = 0. More...
 
static int find_optimal_param_exact (uint64_t sums[32][MAX_PARTITIONS], int i, int max_param)
 
static uint64_t calc_optimal_rice_params (RiceContext *rc, int porder, uint64_t sums[32][MAX_PARTITIONS], int n, int pred_order, int max_param, int exact)
 
static void calc_sum_top (int pmax, int kmax, const uint32_t *data, int n, int pred_order, uint64_t sums[32][MAX_PARTITIONS])
 
static void calc_sum_next (int level, uint64_t sums[32][MAX_PARTITIONS], int kmax)
 
static uint64_t calc_rice_params (RiceContext *rc, uint32_t udata[FLAC_MAX_BLOCKSIZE], uint64_t sums[32][MAX_PARTITIONS], int pmin, int pmax, const int32_t *data, int n, int pred_order, int exact)
 
static int get_max_p_order (int max_porder, int n, int order)
 
static uint64_t find_subframe_rice_params (FlacEncodeContext *s, FlacSubframe *sub, int pred_order)
 
static void encode_residual_fixed (int32_t *res, const int32_t *smp, int n, int order)
 
static int encode_residual_fixed_with_residual_limit (int32_t *res, const int32_t *smp, int n, int order)
 
static int encode_residual_fixed_with_residual_limit_33bps (int32_t *res, const int64_t *smp, int n, int order)
 
static int lpc_encode_with_residual_limit (int32_t *res, const int32_t *smp, int len, int order, int32_t *coefs, int shift)
 
static int lpc_encode_with_residual_limit_33bps (int32_t *res, const int64_t *smp, int len, int order, int32_t *coefs, int shift)
 
static int lpc_encode_choose_datapath (FlacEncodeContext *s, int32_t bps, int32_t *res, const int32_t *smp, const int64_t *smp_33bps, int len, int order, int32_t *coefs, int shift)
 
static int encode_residual_ch (FlacEncodeContext *s, int ch)
 
static int count_frame_header (FlacEncodeContext *s)
 
static int encode_frame (FlacEncodeContext *s)
 
static void remove_wasted_bits (FlacEncodeContext *s)
 
static int estimate_stereo_mode (const int32_t *left_ch, const int32_t *right_ch, int n, int max_rice_param, int bps)
 
static void channel_decorrelation (FlacEncodeContext *s)
 Perform stereo channel decorrelation. More...
 
static void write_utf8 (PutBitContext *pb, uint32_t val)
 
static void write_frame_header (FlacEncodeContext *s)
 
static void set_sr_golomb_flac (PutBitContext *pb, int i, int k)
 
static void write_subframes (FlacEncodeContext *s)
 
static void write_frame_footer (FlacEncodeContext *s)
 
static int write_frame (FlacEncodeContext *s, AVPacket *avpkt)
 
static int update_md5_sum (FlacEncodeContext *s, const void *samples)
 
static int flac_encode_frame (AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
 
static av_cold int flac_encode_close (AVCodecContext *avctx)
 

Variables

static const AVOption options []
 
static const AVClass flac_encoder_class
 
const FFCodec ff_flac_encoder
 

Macro Definition Documentation

◆ FLAC_SUBFRAME_CONSTANT

#define FLAC_SUBFRAME_CONSTANT   0

Definition at line 39 of file flacenc.c.

◆ FLAC_SUBFRAME_VERBATIM

#define FLAC_SUBFRAME_VERBATIM   1

Definition at line 40 of file flacenc.c.

◆ FLAC_SUBFRAME_FIXED

#define FLAC_SUBFRAME_FIXED   8

Definition at line 41 of file flacenc.c.

◆ FLAC_SUBFRAME_LPC

#define FLAC_SUBFRAME_LPC   32

Definition at line 42 of file flacenc.c.

◆ MAX_FIXED_ORDER

#define MAX_FIXED_ORDER   4

Definition at line 44 of file flacenc.c.

◆ MAX_PARTITION_ORDER

#define MAX_PARTITION_ORDER   8

Definition at line 45 of file flacenc.c.

◆ MAX_PARTITIONS

#define MAX_PARTITIONS   (1 << MAX_PARTITION_ORDER)

Definition at line 46 of file flacenc.c.

◆ MAX_LPC_PRECISION

#define MAX_LPC_PRECISION   15

Definition at line 47 of file flacenc.c.

◆ MIN_LPC_SHIFT

#define MIN_LPC_SHIFT   0

Definition at line 48 of file flacenc.c.

◆ MAX_LPC_SHIFT

#define MAX_LPC_SHIFT   15

Definition at line 49 of file flacenc.c.

◆ COPY_SAMPLES

#define COPY_SAMPLES (   bits)
Value:
do { \
const int ## bits ## _t *samples0 = samples; \
frame = &s->frame; \
for (i = 0, j = 0; i < frame->blocksize; i++) \
for (ch = 0; ch < s->channels; ch++, j++) \
frame->subframes[ch].samples[i] = samples0[j] >> shift; \
} while (0)

◆ rice_encode_count

#define rice_encode_count (   sum,
  n,
 
)    (((n)*((k)+1))+((sum-(n>>1))>>(k)))

Definition at line 608 of file flacenc.c.

◆ ENCODE_RESIDUAL_FIXED_WITH_RESIDUAL_LIMIT

#define ENCODE_RESIDUAL_FIXED_WITH_RESIDUAL_LIMIT ( )

Definition at line 834 of file flacenc.c.

◆ LPC_ENCODE_WITH_RESIDUAL_LIMIT

#define LPC_ENCODE_WITH_RESIDUAL_LIMIT ( )
Value:
{ \
for (int i = 0; i < order; i++) \
res[i] = smp[i]; \
for (int i = order; i < len; i++) { \
int64_t p = 0, tmp; \
for (int j = 0; j < order; j++) \
p += (int64_t)coefs[j]*smp[(i-1)-j]; \
p >>= shift; \
tmp = smp[i] - p; \
if (tmp <= INT32_MIN || tmp > INT32_MAX) \
return 1; \
res[i] = tmp; \
} \
return 0; \
}

Definition at line 889 of file flacenc.c.

◆ DEFAULT_TO_VERBATIM

#define DEFAULT_TO_VERBATIM ( )
Value:
{ \
sub->type = sub->type_code = FLAC_SUBFRAME_VERBATIM; \
if (sub->obits <= 32) \
memcpy(res, smp, n * sizeof(int32_t)); \
return subframe_count_exact(s, sub, 0); \
}

Definition at line 945 of file flacenc.c.

◆ FLAGS

Definition at line 1712 of file flacenc.c.

Enumeration Type Documentation

◆ CodingMode

enum CodingMode
Enumerator
CODING_MODE_RICE 
CODING_MODE_RICE2 

Definition at line 51 of file flacenc.c.

Function Documentation

◆ write_streaminfo()

static void write_streaminfo ( FlacEncodeContext s,
uint8_t *  header 
)
static

Write streaminfo metadata block to byte array.

Definition at line 137 of file flacenc.c.

Referenced by flac_encode_frame(), and flac_encode_init().

◆ flac_get_max_frame_size()

static int flac_get_max_frame_size ( int  blocksize,
int  ch,
int  bps 
)
static

Calculate an estimate for the maximum frame size based on verbatim mode.

Parameters
blocksizeblock size, in samples
chnumber of channels
bpsbits-per-sample

Definition at line 166 of file flacenc.c.

Referenced by flac_encode_frame(), and flac_encode_init().

◆ select_blocksize()

static int select_blocksize ( int  samplerate,
int  block_time_ms 
)
static

Set blocksize based on samplerate.

Choose the closest predefined blocksize >= BLOCK_TIME_MS milliseconds.

Definition at line 192 of file flacenc.c.

Referenced by flac_encode_init().

◆ dprint_compression_options()

static av_cold void dprint_compression_options ( FlacEncodeContext s)
static

Definition at line 211 of file flacenc.c.

Referenced by flac_encode_init().

◆ flac_encode_init()

static av_cold int flac_encode_init ( AVCodecContext avctx)
static

Definition at line 269 of file flacenc.c.

◆ init_frame()

static void init_frame ( FlacEncodeContext s,
int  nb_samples 
)
static

Definition at line 478 of file flacenc.c.

Referenced by decode_frame(), and flac_encode_frame().

◆ copy_samples()

static void copy_samples ( FlacEncodeContext s,
const void *  samples 
)
static

Copy channel-interleaved input samples into separate subframes.

Definition at line 523 of file flacenc.c.

Referenced by flac_encode_frame().

◆ rice_count_exact()

static uint64_t rice_count_exact ( const int32_t res,
int  n,
int  k 
)
static

Definition at line 545 of file flacenc.c.

Referenced by subframe_count_exact().

◆ subframe_count_exact()

static uint64_t subframe_count_exact ( FlacEncodeContext s,
FlacSubframe sub,
int  pred_order 
)
static

Definition at line 558 of file flacenc.c.

Referenced by encode_residual_ch().

◆ find_optimal_param()

static int find_optimal_param ( uint64_t  sum,
int  n,
int  max_param 
)
static

Solve for d/dk(rice_encode_count) = n-((sum-(n>>1))>>(k+1)) = 0.

Definition at line 613 of file flacenc.c.

Referenced by calc_optimal_rice_params(), and estimate_stereo_mode().

◆ find_optimal_param_exact()

static int find_optimal_param_exact ( uint64_t  sums[32][MAX_PARTITIONS],
int  i,
int  max_param 
)
static

Definition at line 625 of file flacenc.c.

Referenced by calc_optimal_rice_params().

◆ calc_optimal_rice_params()

static uint64_t calc_optimal_rice_params ( RiceContext rc,
int  porder,
uint64_t  sums[32][MAX_PARTITIONS],
int  n,
int  pred_order,
int  max_param,
int  exact 
)
static

Definition at line 642 of file flacenc.c.

Referenced by calc_rice_params().

◆ calc_sum_top()

static void calc_sum_top ( int  pmax,
int  kmax,
const uint32_t *  data,
int  n,
int  pred_order,
uint64_t  sums[32][MAX_PARTITIONS] 
)
static

Definition at line 672 of file flacenc.c.

Referenced by calc_rice_params().

◆ calc_sum_next()

static void calc_sum_next ( int  level,
uint64_t  sums[32][MAX_PARTITIONS],
int  kmax 
)
static

Definition at line 702 of file flacenc.c.

Referenced by calc_rice_params().

◆ calc_rice_params()

static uint64_t calc_rice_params ( RiceContext rc,
uint32_t  udata[FLAC_MAX_BLOCKSIZE],
uint64_t  sums[32][MAX_PARTITIONS],
int  pmin,
int  pmax,
const int32_t data,
int  n,
int  pred_order,
int  exact 
)
static

Definition at line 712 of file flacenc.c.

Referenced by find_subframe_rice_params().

◆ get_max_p_order()

static int get_max_p_order ( int  max_porder,
int  n,
int  order 
)
static

Definition at line 752 of file flacenc.c.

Referenced by find_subframe_rice_params().

◆ find_subframe_rice_params()

static uint64_t find_subframe_rice_params ( FlacEncodeContext s,
FlacSubframe sub,
int  pred_order 
)
static

Definition at line 761 of file flacenc.c.

Referenced by encode_residual_ch().

◆ encode_residual_fixed()

static void encode_residual_fixed ( int32_t res,
const int32_t smp,
int  n,
int  order 
)
static

Definition at line 778 of file flacenc.c.

Referenced by encode_residual_ch().

◆ encode_residual_fixed_with_residual_limit()

static int encode_residual_fixed_with_residual_limit ( int32_t res,
const int32_t smp,
int  n,
int  order 
)
static

Definition at line 876 of file flacenc.c.

Referenced by encode_residual_ch().

◆ encode_residual_fixed_with_residual_limit_33bps()

static int encode_residual_fixed_with_residual_limit_33bps ( int32_t res,
const int64_t *  smp,
int  n,
int  order 
)
static

Definition at line 883 of file flacenc.c.

Referenced by encode_residual_ch().

◆ lpc_encode_with_residual_limit()

static int lpc_encode_with_residual_limit ( int32_t res,
const int32_t smp,
int  len,
int  order,
int32_t coefs,
int  shift 
)
static

Definition at line 906 of file flacenc.c.

Referenced by lpc_encode_choose_datapath().

◆ lpc_encode_with_residual_limit_33bps()

static int lpc_encode_with_residual_limit_33bps ( int32_t res,
const int64_t *  smp,
int  len,
int  order,
int32_t coefs,
int  shift 
)
static

Definition at line 912 of file flacenc.c.

Referenced by lpc_encode_choose_datapath().

◆ lpc_encode_choose_datapath()

static int lpc_encode_choose_datapath ( FlacEncodeContext s,
int32_t  bps,
int32_t res,
const int32_t smp,
const int64_t *  smp_33bps,
int  len,
int  order,
int32_t coefs,
int  shift 
)
static

Definition at line 918 of file flacenc.c.

Referenced by encode_residual_ch().

◆ encode_residual_ch()

static int encode_residual_ch ( FlacEncodeContext s,
int  ch 
)
static

Definition at line 953 of file flacenc.c.

Referenced by encode_frame().

◆ count_frame_header()

static int count_frame_header ( FlacEncodeContext s)
static

Definition at line 1173 of file flacenc.c.

Referenced by encode_frame().

◆ encode_frame()

static int encode_frame ( FlacEncodeContext s)
static

Definition at line 1209 of file flacenc.c.

Referenced by flac_encode_frame().

◆ remove_wasted_bits()

static void remove_wasted_bits ( FlacEncodeContext s)
static

Definition at line 1229 of file flacenc.c.

Referenced by flac_encode_frame().

◆ estimate_stereo_mode()

static int estimate_stereo_mode ( const int32_t left_ch,
const int32_t right_ch,
int  n,
int  max_rice_param,
int  bps 
)
static

Definition at line 1283 of file flacenc.c.

Referenced by channel_decorrelation().

◆ channel_decorrelation()

static void channel_decorrelation ( FlacEncodeContext s)
static

Perform stereo channel decorrelation.

Definition at line 1339 of file flacenc.c.

Referenced by flac_encode_frame().

◆ write_utf8()

static void write_utf8 ( PutBitContext pb,
uint32_t  val 
)
static

Definition at line 1406 of file flacenc.c.

Referenced by write_frame_header().

◆ write_frame_header()

static void write_frame_header ( FlacEncodeContext s)
static

Definition at line 1413 of file flacenc.c.

Referenced by write_frame().

◆ set_sr_golomb_flac()

static void set_sr_golomb_flac ( PutBitContext pb,
int  i,
int  k 
)
inlinestatic

Definition at line 1450 of file flacenc.c.

Referenced by write_subframes().

◆ write_subframes()

static void write_subframes ( FlacEncodeContext s)
static

Definition at line 1469 of file flacenc.c.

Referenced by write_frame().

◆ write_frame_footer()

static void write_frame_footer ( FlacEncodeContext s)
static

Definition at line 1553 of file flacenc.c.

Referenced by write_frame().

◆ write_frame()

static int write_frame ( FlacEncodeContext s,
AVPacket avpkt 
)
static

Definition at line 1564 of file flacenc.c.

Referenced by flac_encode_frame().

◆ update_md5_sum()

static int update_md5_sum ( FlacEncodeContext s,
const void *  samples 
)
static

Definition at line 1574 of file flacenc.c.

Referenced by flac_encode_frame().

◆ flac_encode_frame()

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

Definition at line 1619 of file flacenc.c.

◆ flac_encode_close()

static av_cold int flac_encode_close ( AVCodecContext avctx)
static

Definition at line 1702 of file flacenc.c.

Variable Documentation

◆ options

const AVOption options[]
static
Initial value:
= {
{ "lpc_coeff_precision", "LPC coefficient precision", 0x42, AV_OPT_TYPE_INT, {.i64 = 15 }, 0, MAX_LPC_PRECISION, FLAGS },
{ "lpc_type", "LPC algorithm", 0x42, AV_OPT_TYPE_INT, {.i64 = FF_LPC_TYPE_DEFAULT }, FF_LPC_TYPE_DEFAULT, FF_LPC_TYPE_NB-1, FLAGS, .unit = "lpc_type" },
{ "none", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_LPC_TYPE_NONE }, INT_MIN, INT_MAX, FLAGS, .unit = "lpc_type" },
{ "fixed", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_LPC_TYPE_FIXED }, INT_MIN, INT_MAX, FLAGS, .unit = "lpc_type" },
{ "levinson", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_LPC_TYPE_LEVINSON }, INT_MIN, INT_MAX, FLAGS, .unit = "lpc_type" },
{ "cholesky", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = FF_LPC_TYPE_CHOLESKY }, INT_MIN, INT_MAX, FLAGS, .unit = "lpc_type" },
{ "lpc_passes", "Number of passes to use for Cholesky factorization during LPC analysis", 0x42, AV_OPT_TYPE_INT, {.i64 = 2 }, 1, INT_MAX, FLAGS },
{ "min_partition_order", NULL, 0x42, AV_OPT_TYPE_INT, {.i64 = -1 }, -1, MAX_PARTITION_ORDER, FLAGS },
{ "max_partition_order", NULL, 0x42, AV_OPT_TYPE_INT, {.i64 = -1 }, -1, MAX_PARTITION_ORDER, FLAGS },
{ "prediction_order_method", "Search method for selecting prediction order", 0x42, AV_OPT_TYPE_INT, {.i64 = -1 }, -1, ORDER_METHOD_LOG, FLAGS, .unit = "predm" },
{ "estimation", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = ORDER_METHOD_EST }, INT_MIN, INT_MAX, FLAGS, .unit = "predm" },
{ "2level", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = ORDER_METHOD_2LEVEL }, INT_MIN, INT_MAX, FLAGS, .unit = "predm" },
{ "4level", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = ORDER_METHOD_4LEVEL }, INT_MIN, INT_MAX, FLAGS, .unit = "predm" },
{ "8level", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = ORDER_METHOD_8LEVEL }, INT_MIN, INT_MAX, FLAGS, .unit = "predm" },
{ "search", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = ORDER_METHOD_SEARCH }, INT_MIN, INT_MAX, FLAGS, .unit = "predm" },
{ "log", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = ORDER_METHOD_LOG }, INT_MIN, INT_MAX, FLAGS, .unit = "predm" },
{ "ch_mode", "Stereo decorrelation mode", 0x42, AV_OPT_TYPE_INT, { .i64 = -1 }, -1, FLAC_CHMODE_MID_SIDE, FLAGS, .unit = "ch_mode" },
{ "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, INT_MIN, INT_MAX, FLAGS, .unit = "ch_mode" },
{ "indep", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FLAC_CHMODE_INDEPENDENT }, INT_MIN, INT_MAX, FLAGS, .unit = "ch_mode" },
{ "left_side", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FLAC_CHMODE_LEFT_SIDE }, INT_MIN, INT_MAX, FLAGS, .unit = "ch_mode" },
{ "right_side", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FLAC_CHMODE_RIGHT_SIDE }, INT_MIN, INT_MAX, FLAGS, .unit = "ch_mode" },
{ "mid_side", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FLAC_CHMODE_MID_SIDE }, INT_MIN, INT_MAX, FLAGS, .unit = "ch_mode" },
{ "exact_rice_parameters", "Calculate rice parameters exactly", 0x42, AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "multi_dim_quant", "Multi-dimensional quantization", 0x42, AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "min_prediction_order", NULL, 0x42, AV_OPT_TYPE_INT, { .i64 = -1 }, -1, MAX_LPC_ORDER, FLAGS },
{ "max_prediction_order", NULL, 0x42, AV_OPT_TYPE_INT, { .i64 = -1 }, -1, MAX_LPC_ORDER, FLAGS },
{ NULL },
}

Definition at line 1713 of file flacenc.c.

◆ flac_encoder_class

const AVClass flac_encoder_class
static
Initial value:
= {
.class_name = "FLAC encoder",
.item_name = av_default_item_name,
.option = options,
}

Definition at line 1744 of file flacenc.c.

◆ ff_flac_encoder

const FFCodec ff_flac_encoder
Initial value:

Definition at line 1751 of file flacenc.c.

FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: codec_internal.h:42
flac_encode_init
static av_cold int flac_encode_init(AVCodecContext *avctx)
Definition: flacenc.c:269
MAX_PARTITION_ORDER
#define MAX_PARTITION_ORDER
Definition: flacenc.c:45
FF_CODEC_CAP_EOF_FLUSH
#define FF_CODEC_CAP_EOF_FLUSH
The encoder has AV_CODEC_CAP_DELAY set, but does not actually have delay - it only wants to be flushe...
Definition: codec_internal.h:90
flac_encode_frame
static int flac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Definition: flacenc.c:1619
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:28
FF_LPC_TYPE_CHOLESKY
@ FF_LPC_TYPE_CHOLESKY
Cholesky factorization.
Definition: lpc.h:49
FlacEncodeContext
Definition: flacenc.c:105
FLAC_CHMODE_LEFT_SIDE
@ FLAC_CHMODE_LEFT_SIDE
Definition: flac.h:40
AV_CODEC_ID_FLAC
@ AV_CODEC_ID_FLAC
Definition: codec_id.h:455
ORDER_METHOD_4LEVEL
#define ORDER_METHOD_4LEVEL
Definition: lpc.h:33
FF_CODEC_ENCODE_CB
#define FF_CODEC_ENCODE_CB(func)
Definition: codec_internal.h:315
FF_LPC_TYPE_DEFAULT
@ FF_LPC_TYPE_DEFAULT
use the codec default LPC type
Definition: lpc.h:45
s
#define s(width, name)
Definition: cbs_vp9.c:198
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE
#define AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE
This encoder can reorder user opaque values from input AVFrames and return them with corresponding ou...
Definition: codec.h:159
bits
uint8_t bits
Definition: vp3data.h:128
FLAC_SUBFRAME_VERBATIM
#define FLAC_SUBFRAME_VERBATIM
Definition: flacenc.c:40
FLAC_CHMODE_RIGHT_SIDE
@ FLAC_CHMODE_RIGHT_SIDE
Definition: flac.h:41
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition: codec_internal.h:272
frame
static AVFrame * frame
Definition: demux_decode.c:54
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
NULL
#define NULL
Definition: coverity.c:32
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:237
FLAGS
#define FLAGS
Definition: flacenc.c:1712
ORDER_METHOD_SEARCH
#define ORDER_METHOD_SEARCH
Definition: lpc.h:35
ORDER_METHOD_8LEVEL
#define ORDER_METHOD_8LEVEL
Definition: lpc.h:34
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts.c:365
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
shift
static int shift(int a, int b)
Definition: bonk.c:262
FF_LPC_TYPE_NB
@ FF_LPC_TYPE_NB
Not part of ABI.
Definition: lpc.h:50
MAX_LPC_ORDER
#define MAX_LPC_ORDER
Definition: lpc.h:39
AV_SAMPLE_FMT_NONE
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:56
FLAC_CHMODE_INDEPENDENT
@ FLAC_CHMODE_INDEPENDENT
Definition: flac.h:39
ORDER_METHOD_EST
#define ORDER_METHOD_EST
Definition: lpc.h:31
options
static const AVOption options[]
Definition: flacenc.c:1713
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:245
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:55
AV_SAMPLE_FMT_S16
@ AV_SAMPLE_FMT_S16
signed 16 bits
Definition: samplefmt.h:58
len
int len
Definition: vorbis_enc_data.h:426
MAX_LPC_PRECISION
#define MAX_LPC_PRECISION
Definition: flacenc.c:47
ORDER_METHOD_LOG
#define ORDER_METHOD_LOG
Definition: lpc.h:36
subframe_count_exact
static uint64_t subframe_count_exact(FlacEncodeContext *s, FlacSubframe *sub, int pred_order)
Definition: flacenc.c:558
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
AV_CODEC_CAP_DELAY
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: codec.h:76
samples
Filter the word “frame” indicates either a video frame or a group of audio samples
Definition: filter_design.txt:8
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:244
flac_encode_close
static av_cold int flac_encode_close(AVCodecContext *avctx)
Definition: flacenc.c:1702
FLAC_CHMODE_MID_SIDE
@ FLAC_CHMODE_MID_SIDE
Definition: flac.h:42
int32_t
int32_t
Definition: audioconvert.c:56
flac_encoder_class
static const AVClass flac_encoder_class
Definition: flacenc.c:1744
ORDER_METHOD_2LEVEL
#define ORDER_METHOD_2LEVEL
Definition: lpc.h:32
FF_LPC_TYPE_NONE
@ FF_LPC_TYPE_NONE
do not use LPC prediction or use all zero coefficients
Definition: lpc.h:46
AV_CODEC_CAP_SMALL_LAST_FRAME
#define AV_CODEC_CAP_SMALL_LAST_FRAME
Codec can be fed a final frame with a smaller size.
Definition: codec.h:81
AV_SAMPLE_FMT_S32
@ AV_SAMPLE_FMT_S32
signed 32 bits
Definition: samplefmt.h:59
AV_OPT_TYPE_CONST
@ AV_OPT_TYPE_CONST
Definition: opt.h:234
FF_LPC_TYPE_LEVINSON
@ FF_LPC_TYPE_LEVINSON
Levinson-Durbin recursion.
Definition: lpc.h:48
FF_LPC_TYPE_FIXED
@ FF_LPC_TYPE_FIXED
fixed LPC coefficients
Definition: lpc.h:47