j2kenc.c File Reference

JPEG2000 image encoder. More...

#include <float.h>
#include "avcodec.h"
#include "internal.h"
#include "bytestream.h"
#include "j2k.h"
#include "libavutil/common.h"

Go to the source code of this file.

Data Structures
struct	J2kTile
struct	J2kEncoderContext

Macros
#define	NMSEDEC_BITS   7
#define	NMSEDEC_FRACBITS   (NMSEDEC_BITS-1)
#define	WMSEDEC_SHIFT   13
	must be >= 13
#define	LAMBDA_SCALE   (100000000LL << (WMSEDEC_SHIFT - 13))

Functions
static void	put_bits (J2kEncoderContext *s, int val, int n)
	put n times val bit
static void	put_num (J2kEncoderContext *s, int num, int n)
	put n least significant bits of a number num
static void	j2k_flush (J2kEncoderContext *s)
	flush the bitstream
static void	tag_tree_code (J2kEncoderContext *s, J2kTgtNode *node, int threshold)
	code the value stored in node
static void	tag_tree_update (J2kTgtNode *node)
	update the value in node
static int	put_siz (J2kEncoderContext *s)
static int	put_cod (J2kEncoderContext *s)
static int	put_qcd (J2kEncoderContext *s, int compno)
static uint8_t *	put_sot (J2kEncoderContext *s, int tileno)
static int	init_tiles (J2kEncoderContext *s)
	compute the sizes of tiles, resolution levels, bands, etc.
static void	copy_frame (J2kEncoderContext *s)
static void	init_quantization (J2kEncoderContext *s)
static void	init_luts (void)
static int	getnmsedec_sig (int x, int bpno)
static int	getnmsedec_ref (int x, int bpno)
static void	encode_sigpass (J2kT1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)
static void	encode_refpass (J2kT1Context *t1, int width, int height, int *nmsedec, int bpno)
static void	encode_clnpass (J2kT1Context *t1, int width, int height, int bandno, int *nmsedec, int bpno)
static void	encode_cblk (J2kEncoderContext *s, J2kT1Context *t1, J2kCblk *cblk, J2kTile *tile, int width, int height, int bandpos, int lev)
static void	putnumpasses (J2kEncoderContext *s, int n)
static int	encode_packet (J2kEncoderContext *s, J2kResLevel *rlevel, int precno, uint8_t *expn, int numgbits)
static int	encode_packets (J2kEncoderContext *s, J2kTile *tile, int tileno)
static int	getcut (J2kCblk *cblk, int64_t lambda, int dwt_norm)
static void	truncpasses (J2kEncoderContext *s, J2kTile *tile)
static int	encode_tile (J2kEncoderContext *s, J2kTile *tile, int tileno)
static void	cleanup (J2kEncoderContext *s)
static void	reinit (J2kEncoderContext *s)
static int	encode_frame (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pict, int *got_packet)
static av_cold int	j2kenc_init (AVCodecContext *avctx)
static int	j2kenc_destroy (AVCodecContext *avctx)

Variables
static int	lut_nmsedec_ref [1<< NMSEDEC_BITS]
static int	lut_nmsedec_ref0 [1<< NMSEDEC_BITS]
static int	lut_nmsedec_sig [1<< NMSEDEC_BITS]
static int	lut_nmsedec_sig0 [1<< NMSEDEC_BITS]
static const int	dwt_norms [2][4][10]
AVCodec	ff_jpeg2000_encoder

Detailed Description

JPEG2000 image encoder.

Author

Kamil Nowosad

Definition in file j2kenc.c.

Macro Definition Documentation

#define NMSEDEC_BITS   7

Definition at line 35 of file j2kenc.c.

Referenced by getnmsedec_ref(), getnmsedec_sig(), and init_luts().

#define NMSEDEC_FRACBITS   (NMSEDEC_BITS-1)

Definition at line 36 of file j2kenc.c.

Referenced by encode_cblk(), encode_clnpass(), encode_refpass(), encode_sigpass(), encode_tile(), getnmsedec_ref(), getnmsedec_sig(), and init_luts().

#define WMSEDEC_SHIFT   13

must be >= 13

Definition at line 37 of file j2kenc.c.

Referenced by getcut().

#define LAMBDA_SCALE   (100000000LL << (WMSEDEC_SHIFT - 13))

Definition at line 38 of file j2kenc.c.

Referenced by encode_frame().

Function Documentation

static void put_bits ( J2kEncoderContext *  s, int  val, int  n  )

static

put n times val bit

Definition at line 160 of file j2kenc.c.

Referenced by aac_adtstoasc_filter(), aac_encode_frame(), ac3_output_frame_header(), adts_decode_extradata(), adts_write_frame_header(), asv1_encode_block(), asv1_put_level(), asv2_encode_block(), asv2_put_bits(), asv2_put_level(), avpriv_align_put_bits(), avpriv_copy_bits(), avpriv_put_string(), bit_copy(), codebook_trellis_rate(), copy_bits(), dnxhd_encode_block(), dnxhd_encode_dc(), dnxhd_encode_thread(), dv_encode_ac(), dv_encode_video_segment(), encode_422_bitstream(), encode_ac_coeffs(), encode_bitstream(), encode_block(), encode_codeword(), encode_dc(), encode_exp_vlc(), encode_ext_header(), encode_frame(), encode_individual_channel(), encode_line(), encode_mb_skip_run(), encode_ms_info(), encode_packet(), encode_picture_ls(), encode_pulses(), encode_scalar(), encode_scale_factors(), encode_superframe(), encode_vlc_codeword(), encode_window_bands_info(), ff_dca_convert_bitstream(), ff_eac3_output_frame_header(), ff_flv2_encode_ac_esc(), ff_flv_encode_picture_header(), ff_h261_encode_mb(), ff_h261_encode_picture_header(), ff_h263_encode_gob_header(), ff_h263_encode_mb(), ff_h263_encode_mba(), ff_h263_encode_motion(), ff_h263_encode_picture_header(), ff_mjpeg_encode_dc(), ff_mjpeg_encode_picture_header(), ff_mjpeg_encode_stuffing(), ff_mjpeg_find_marker(), ff_mpeg1_encode_picture_header(), ff_mpeg1_encode_slice_header(), ff_mpeg4_encode_mb(), ff_mpeg4_encode_picture_header(), ff_mpeg4_encode_video_packet_header(), ff_mpeg4_merge_partitions(), ff_mpeg4_stuffing(), ff_MPV_encode_picture(), ff_msmpeg4_code012(), ff_msmpeg4_encode_block(), ff_msmpeg4_encode_ext_header(), ff_msmpeg4_encode_mb(), ff_msmpeg4_encode_motion(), ff_msmpeg4_encode_picture_header(), ff_rv10_encode_picture_header(), ff_rv20_encode_picture_header(), ff_wmv2_encode_mb(), ff_wmv2_encode_picture_header(), ff_write_quant_matrix(), floor_encode(), gif_image_write_image(), h261_encode_block(), h261_encode_gob_header(), h261_encode_motion(), h263_encode_block(), h263p_encode_umotion(), jpeg_put_comments(), jpeg_table_header(), latm_write_frame_header(), latm_write_packet(), ls_encode_run(), ls_store_lse(), main(), mov_write_ac3_tag(), mov_write_dvc1_structs(), mpeg1_encode_block(), mpeg1_encode_mb_internal(), mpeg1_encode_motion(), mpeg1_encode_sequence_header(), mpeg4_encode_block(), mpeg4_encode_dc(), mpeg4_encode_gop_header(), mpeg4_encode_visual_object_header(), mpeg4_encode_vol_header(), msmpeg4_encode_dc(), msmpeg4v2_encode_motion(), output_audio_block(), pnm_decode_frame(), put_audio_specific_config(), put_bitstream_info(), put_codebook_header(), put_codeword(), put_floor_header(), put_frame_header(), put_header(), put_huffman_table(), put_ics_info(), put_main_header(), put_marker(), put_mb_modes(), put_num(), put_pack_header(), put_primary_audio_header(), put_qscale(), put_residue_header(), put_sample7(), put_subframe(), put_swf_line_edge(), put_swf_matrix(), put_swf_rect(), put_system_header(), put_xsub_rle(), quantize_and_encode_band_cost_template(), ra144_encode_frame(), ra144_encode_subblock(), read_packet(), save_bits(), send_mode_a(), send_mode_b(), set_te_golomb(), set_ue_golomb(), set_ur_golomb(), set_ur_golomb_jpegls(), svq1_encode_frame(), svq1_encode_plane(), svq1_write_header(), swf_write_header(), tag_tree_code(), vorbis_encode_frame(), write_element(), write_element_header(), write_frame(), write_frame_footer(), write_frame_header(), write_header(), write_huff_codes(), write_streaminfo(), write_subframes(), and write_utf8().

static void put_num ( J2kEncoderContext *  s, int  num, int  n  )

static

put n least significant bits of a number num

Definition at line 173 of file j2kenc.c.

Referenced by encode_packet(), and putnumpasses().

static void j2k_flush ( J2kEncoderContext *  s )

static

flush the bitstream

Definition at line 180 of file j2kenc.c.

Referenced by encode_packet().

static void tag_tree_code ( J2kEncoderContext *  s, J2kTgtNode *  node, int  threshold  )

static

code the value stored in node

Definition at line 191 of file j2kenc.c.

Referenced by encode_packet().

static void tag_tree_update ( J2kTgtNode *  node )

static

update the value in node

Definition at line 219 of file j2kenc.c.

Referenced by encode_packet().

static int put_siz ( J2kEncoderContext *  s )

static

Definition at line 231 of file j2kenc.c.

Referenced by encode_frame().

static int put_cod ( J2kEncoderContext *  s )

static

Definition at line 260 of file j2kenc.c.

Referenced by encode_frame().

static int put_qcd ( J2kEncoderContext *  s, int  compno  )

static

Definition at line 287 of file j2kenc.c.

Referenced by encode_frame().

static uint8_t* put_sot ( J2kEncoderContext *  s, int  tileno  )

static

Definition at line 313 of file j2kenc.c.

Referenced by encode_frame().

static int init_tiles ( J2kEncoderContext *  s )

static

compute the sizes of tiles, resolution levels, bands, etc.

allocate memory for them divide the input image into tile-components

Definition at line 337 of file j2kenc.c.

Referenced by j2kenc_init().

static void copy_frame ( J2kEncoderContext *  s )

static

Definition at line 376 of file j2kenc.c.

Referenced by encode_frame().

static void init_quantization ( J2kEncoderContext *  s )

static

Definition at line 414 of file j2kenc.c.

Referenced by j2kenc_init().

static void init_luts ( void  )

static

Definition at line 444 of file j2kenc.c.

Referenced by j2kenc_init().

static int getnmsedec_sig ( int  x, int  bpno  )

static

Definition at line 462 of file j2kenc.c.

Referenced by encode_clnpass(), and encode_sigpass().

static int getnmsedec_ref ( int  x, int  bpno  )

static

Definition at line 469 of file j2kenc.c.

Referenced by encode_refpass().

static void encode_sigpass ( J2kT1Context *  t1, int  width, int  height, int  bandno, int *  nmsedec, int  bpno  )

static

Definition at line 476 of file j2kenc.c.

Referenced by encode_cblk().

static void encode_refpass ( J2kT1Context *  t1, int  width, int  height, int *  nmsedec, int  bpno  )

static

Definition at line 499 of file j2kenc.c.

Referenced by encode_cblk().

static void encode_clnpass ( J2kT1Context *  t1, int  width, int  height, int  bandno, int *  nmsedec, int  bpno  )

static

Definition at line 513 of file j2kenc.c.

Referenced by encode_cblk().

static void encode_cblk ( J2kEncoderContext *  s, J2kT1Context *  t1, J2kCblk *  cblk, J2kTile *  tile, int  width, int  height, int  bandpos, int  lev  )

static

Definition at line 569 of file j2kenc.c.

Referenced by encode_tile().

static void putnumpasses ( J2kEncoderContext *  s, int  n  )

static

Definition at line 628 of file j2kenc.c.

Referenced by encode_packet().

static int encode_packet ( J2kEncoderContext *  s, J2kResLevel *  rlevel, int  precno, uint8_t *  expn, int  numgbits  )

static

Definition at line 643 of file j2kenc.c.

Referenced by encode_packets().

static int encode_packets ( J2kEncoderContext *  s, J2kTile *  tile, int  tileno  )

static

Definition at line 738 of file j2kenc.c.

Referenced by encode_tile().

static int getcut ( J2kCblk *  cblk, int64_t  lambda, int  dwt_norm  )

static

Definition at line 761 of file j2kenc.c.

Referenced by truncpasses().

static void truncpasses ( J2kEncoderContext *  s, J2kTile *  tile  )

static

Definition at line 779 of file j2kenc.c.

Referenced by encode_tile().

static int encode_tile ( J2kEncoderContext *  s, J2kTile *  tile, int  tileno  )

static

Definition at line 805 of file j2kenc.c.

Referenced by encode_frame().

static void cleanup ( J2kEncoderContext *  s )

static

Definition at line 883 of file j2kenc.c.

Referenced by j2kenc_destroy().

static void reinit ( J2kEncoderContext *  s )

static

Definition at line 898 of file j2kenc.c.

Referenced by encode_frame().

static int encode_frame ( AVCodecContext *  avctx, AVPacket *  pkt, const AVFrame *  pict, int *  got_packet  )

static

Definition at line 908 of file j2kenc.c.

static av_cold int j2kenc_init ( AVCodecContext *  avctx )

static

Definition at line 962 of file j2kenc.c.

static int j2kenc_destroy ( AVCodecContext *  avctx )

static

Definition at line 1021 of file j2kenc.c.

Variable Documentation

int lut_nmsedec_ref[1<< NMSEDEC_BITS]

static

Definition at line 40 of file j2kenc.c.

Referenced by getnmsedec_ref(), and init_luts().

int lut_nmsedec_ref0[1<< NMSEDEC_BITS]

static

Definition at line 40 of file j2kenc.c.

Referenced by getnmsedec_ref(), and init_luts().

int lut_nmsedec_sig[1<< NMSEDEC_BITS]

static

Definition at line 40 of file j2kenc.c.

Referenced by getnmsedec_sig(), and init_luts().

int lut_nmsedec_sig0[1<< NMSEDEC_BITS]

static

Definition at line 40 of file j2kenc.c.

Referenced by getnmsedec_sig(), and init_luts().

const int dwt_norms[2][4][10]

static

Initial value:

= { 
    {{10000, 19650, 41770,  84030, 169000, 338400,  676900, 1353000, 2706000, 5409000},
     {20220, 39890, 83550, 170400, 342700, 686300, 1373000, 2746000, 5490000},
     {20220, 39890, 83550, 170400, 342700, 686300, 1373000, 2746000, 5490000},
     {20800, 38650, 83070, 171800, 347100, 695900, 1393000, 2786000, 5572000}},

    {{10000, 15000, 27500, 53750, 106800, 213400, 426700, 853300, 1707000, 3413000},
     {10380, 15920, 29190, 57030, 113300, 226400, 452500, 904800, 1809000},
     {10380, 15920, 29190, 57030, 113300, 226400, 452500, 904800, 1809000},
     { 7186,  9218, 15860, 30430,  60190, 120100, 240000, 479700,  959300}}
}

Definition at line 45 of file j2kenc.c.

Referenced by init_quantization(), and truncpasses().

AVCodec ff_jpeg2000_encoder

Initial value:

= {
    .name           = "j2k",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_JPEG2000,
    .priv_data_size = sizeof(J2kEncoderContext),
    .init           = j2kenc_init,
    .encode2        = encode_frame,
    .close          = j2kenc_destroy,
    .capabilities   = CODEC_CAP_EXPERIMENTAL,
    .long_name      = NULL_IF_CONFIG_SMALL("JPEG 2000"),
    .pix_fmts       = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_RGB24, AV_PIX_FMT_YUV444P, AV_PIX_FMT_GRAY8,

        AV_PIX_FMT_NONE
    }
}

Definition at line 1029 of file j2kenc.c.