vf_spp.c File Reference

Simple post processing filter. More...

#include "libavutil/avassert.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "internal.h"
#include "vf_spp.h"

Go to the source code of this file.

Macros
#define	OFFSET(x)   offsetof(SPPContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	STORE(pos)
#define	STORE16(pos)

Enumerations
enum	mode {   MODE_NONE, MODE_RO, MODE_RW, MODE_TOGGLE,   MODE_RANDOM, NB_MODES, MODE_COVER, MODE_BLUR,   NB_MODES, MODE_HARD, MODE_SOFT, MODE_MEDIUM,   MODE_HARD, MODE_SOFT, NB_MODES }

Functions
static const AVClass *	child_class_next (const AVClass *prev)
static void *	child_next (void *obj, void *prev)
static void	hardthresh_c (int16_t dst[64], const int16_t src[64], int qp, const uint8_t *permutation)
static void	softthresh_c (int16_t dst[64], const int16_t src[64], int qp, const uint8_t *permutation)
static void	store_slice_c (uint8_t *dst, const int16_t *src, int dst_linesize, int src_linesize, int width, int height, int log2_scale, const uint8_t dither[8][8])
static void	store_slice16_c (uint16_t *dst, const int16_t *src, int dst_linesize, int src_linesize, int width, int height, int log2_scale, const uint8_t dither[8][8], int depth)
static void	add_block (uint16_t *dst, int linesize, const int16_t block[64])
static void	filter (SPPContext *p, uint8_t *dst, uint8_t *src, int dst_linesize, int src_linesize, int width, int height, const uint8_t *qp_table, int qp_stride, int is_luma, int depth)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static int	process_command (AVFilterContext *ctx, const char *cmd, const char *args, char *res, int res_len, int flags)
static av_cold int	init_dict (AVFilterContext *ctx, AVDictionary **opts)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	spp_options []
static const AVClass	spp_class
static const uint8_t	ldither [8][8]
static const uint8_t	offset [127][2]
static const AVFilterPad	spp_inputs []
static const AVFilterPad	spp_outputs []
AVFilter	ff_vf_spp

Detailed Description

Simple post processing filter.

This implementation is based on an algorithm described in "Aria Nosratinia Embedded Post-Processing for Enhancement of Compressed Images (1999)"

Originally written by Michael Niedermayer for the MPlayer project, and ported by Clément Bœsch for FFmpeg.

Definition in file vf_spp.c.

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(SPPContext, x)

Definition at line 58 of file vf_spp.c.

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 59 of file vf_spp.c.

#define STORE

(

pos

)

Value:

do {                                                     \
    temp = ((src[x + y*src_linesize + pos] << log2_scale) + d[pos]) >> 6;   \
    if (temp & 0x100)                                                       \
        temp = ~(temp >> 31);                                               \
    dst[x + y*dst_linesize + pos] = temp;                                   \
} while (0)

Referenced by store_slice_c().

#define STORE16

(

pos

)

Value:

do {                                                   \
    temp = ((src[x + y*src_linesize + pos] << log2_scale) + (d[pos]>>1)) >> 5;   \
    if (temp & mask )                                                       \
        temp = ~(temp >> 31);                                               \
    dst[x + y*dst_linesize + pos] = temp;                                   \
} while (0)

Referenced by store_slice16_c().

Enumeration Type Documentation

enum mode

Enumerator
MODE_NONE
MODE_RO
MODE_RW
MODE_TOGGLE
MODE_RANDOM
NB_MODES
MODE_COVER
MODE_BLUR
NB_MODES
MODE_HARD
MODE_SOFT
MODE_MEDIUM
MODE_HARD
MODE_SOFT
NB_MODES

Definition at line 41 of file vf_spp.c.

Function Documentation

static const AVClass* child_class_next ( const AVClass *  prev )

static

Definition at line 47 of file vf_spp.c.

static void* child_next ( void *  obj, void *  prev  )

static

Definition at line 52 of file vf_spp.c.

static void hardthresh_c ( int16_t  dst[64], const int16_t  src[64], int  qp, const uint8_t *  permutation  )

static

Definition at line 116 of file vf_spp.c.

Referenced by init_dict().

static void softthresh_c ( int16_t  dst[64], const int16_t  src[64], int  qp, const uint8_t *  permutation  )

static

Definition at line 137 of file vf_spp.c.

Referenced by init_dict().

static void store_slice_c ( uint8_t *  dst, const int16_t *  src, int  dst_linesize, int  src_linesize, int  width, int  height, int  log2_scale, const uint8_t  dither[8][8]  )

static

Definition at line 159 of file vf_spp.c.

Referenced by init_dict().

static void store_slice16_c ( uint16_t *  dst, const int16_t *  src, int  dst_linesize, int  src_linesize, int  width, int  height, int  log2_scale, const uint8_t  dither[8][8], int  depth  )

static

Definition at line 189 of file vf_spp.c.

Referenced by filter().

static void add_block ( uint16_t *  dst, int  linesize, const int16_t  block[64]  )

inlinestatic

Definition at line 220 of file vf_spp.c.

Referenced by filter().

static void filter ( SPPContext *  p, uint8_t *  dst, uint8_t *  src, int  dst_linesize, int  src_linesize, int  width, int  height, const uint8_t *  qp_table, int  qp_stride, int  is_luma, int  depth  )

static

Definition at line 232 of file vf_spp.c.

Referenced by filter_frame().

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 304 of file vf_spp.c.

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 329 of file vf_spp.c.

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  in  )

static

Definition at line 353 of file vf_spp.c.

static int process_command ( AVFilterContext *  ctx, const char *  cmd, const char *  args, char *  res, int  res_len, int  flags  )

static

Definition at line 442 of file vf_spp.c.

static av_cold int init_dict ( AVFilterContext *  ctx, AVDictionary **  opts  )

static

Definition at line 457 of file vf_spp.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 485 of file vf_spp.c.

Variable Documentation

const AVOption spp_options[]

static

Initial value:

= {
    { "quality", "set quality", OFFSET(log2_count), AV_OPT_TYPE_INT, {.i64 = 3}, 0, MAX_LEVEL, FLAGS },
    { "qp", "force a constant quantizer parameter", OFFSET(qp), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, FLAGS },
    { "mode", "set thresholding mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 = MODE_HARD}, 0, NB_MODES - 1, FLAGS, "mode" },
        { "hard", "hard thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_HARD}, INT_MIN, INT_MAX, FLAGS, "mode" },
        { "soft", "soft thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_SOFT}, INT_MIN, INT_MAX, FLAGS, "mode" },
    { "use_bframe_qp", "use B-frames' QP", OFFSET(use_bframe_qp), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, FLAGS },
    { NULL }
}

Definition at line 60 of file vf_spp.c.

const AVClass spp_class

static

Initial value:

= {
    .class_name       = "spp",
    .item_name        = av_default_item_name,
    .option           = spp_options,
    .version          = LIBAVUTIL_VERSION_INT,
    .category         = AV_CLASS_CATEGORY_FILTER,
    .child_class_next = child_class_next,
    .child_next       = child_next,
}

Definition at line 70 of file vf_spp.c.

const uint8_t ldither[8][8]

static

Initial value:

= {
    {  0,  48,  12,  60,   3,  51,  15,  63 },
    { 32,  16,  44,  28,  35,  19,  47,  31 },
    {  8,  56,   4,  52,  11,  59,   7,  55 },
    { 40,  24,  36,  20,  43,  27,  39,  23 },
    {  2,  50,  14,  62,   1,  49,  13,  61 },
    { 34,  18,  46,  30,  33,  17,  45,  29 },
    { 10,  58,   6,  54,   9,  57,   5,  53 },
    { 42,  26,  38,  22,  41,  25,  37,  21 },
}

Definition at line 81 of file vf_spp.c.

Referenced by filter().

const uint8_t offset[127][2]

static

Initial value:

= {
    {0,0},
    {0,0}, {4,4},                                           
    {0,0}, {2,2}, {6,4}, {4,6},                             
    {0,0}, {5,1}, {2,2}, {7,3}, {4,4}, {1,5}, {6,6}, {3,7}, 

    {0,0}, {4,0}, {1,1}, {5,1}, {3,2}, {7,2}, {2,3}, {6,3}, 
    {0,4}, {4,4}, {1,5}, {5,5}, {3,6}, {7,6}, {2,7}, {6,7},

    {0,0}, {0,2}, {0,4}, {0,6}, {1,1}, {1,3}, {1,5}, {1,7}, 
    {2,0}, {2,2}, {2,4}, {2,6}, {3,1}, {3,3}, {3,5}, {3,7},
    {4,0}, {4,2}, {4,4}, {4,6}, {5,1}, {5,3}, {5,5}, {5,7},
    {6,0}, {6,2}, {6,4}, {6,6}, {7,1}, {7,3}, {7,5}, {7,7},

    {0,0}, {4,4}, {0,4}, {4,0}, {2,2}, {6,6}, {2,6}, {6,2}, 
    {0,2}, {4,6}, {0,6}, {4,2}, {2,0}, {6,4}, {2,4}, {6,0},
    {1,1}, {5,5}, {1,5}, {5,1}, {3,3}, {7,7}, {3,7}, {7,3},
    {1,3}, {5,7}, {1,7}, {5,3}, {3,1}, {7,5}, {3,5}, {7,1},
    {0,1}, {4,5}, {0,5}, {4,1}, {2,3}, {6,7}, {2,7}, {6,3},
    {0,3}, {4,7}, {0,7}, {4,3}, {2,1}, {6,5}, {2,5}, {6,1},
    {1,0}, {5,4}, {1,4}, {5,0}, {3,2}, {7,6}, {3,6}, {7,2},
    {1,2}, {5,6}, {1,6}, {5,2}, {3,0}, {7,4}, {3,4}, {7,0},
}

Definition at line 92 of file vf_spp.c.

Referenced by aa_read_header(), adx_decode(), adx_probe(), aiff_read_header(), alloc_and_copy(), alloc_frame_buffer(), ape_decode_frame(), apng_read_header(), apply_window_and_mdct(), asf_parse_packet(), asf_read_single_payload(), asf_write_markers(), asf_write_packet(), assign_pair(), av_fifo_generic_peek_at(), av_probe_input_buffer2(), avc_biwgt_16width_msa(), avc_biwgt_4x2_msa(), avc_biwgt_4x4multiple_msa(), avc_biwgt_8width_msa(), avc_wgt_16width_msa(), avc_wgt_4x2_msa(), avc_wgt_4x4multiple_msa(), avc_wgt_8width_msa(), avi_extract_stream_metadata(), avio_seek(), avpriv_copy_pce_data(), aw_parse_coords(), bfi_decode_frame(), bidir_sal(), bitplane_decoding(), bl_intrp(), buffer_offset(), bytestream2_seek(), bytestream2_seek_p(), celt_decode_allocation(), celt_decode_band(), celt_decode_final_energy(), celt_decode_fine_energy(), check_rgb2yuv(), check_yuv2rgb(), check_yuv2yuv(), chroma_4mv_motion(), chroma_4mv_motion_lowres(), chroma_tc(), chs_clear_band_data(), cin_decode_lzss(), comp_block(), comp_interp_index(), comp_ppf_coeff(), compute_pkt_fields(), config_input(), config_output(), cook_decode_frame(), copy_cell(), copy_param_sets(), count_nalus(), count_ts(), decode_0(), decode_8_pulses_35bits(), decode_blockcodes(), decode_blocks(), decode_bytes_and_gain(), decode_cell(), decode_dds1(), decode_decorrelation_matrix(), decode_delta_d(), decode_delta_e(), decode_delta_j(), decode_delta_l(), decode_dsw1(), decode_entropy_coded_image(), decode_fixed_sparse(), decode_frame(), decode_init(), decode_init_static(), decode_interframe_v4(), decode_interframe_v4a(), decode_log_area(), decode_rgb_frame(), decode_rle(), decode_scalefactors(), decode_short_horizontal_delta(), decode_subframe(), decode_tilehdr(), decode_tsw1(), dnxhd_decode_row(), dnxhd_encode_picture(), dnxhd_init_vlc(), dnxhd_setup_threads_slices(), draw_slice(), dss_723_1_read_packet(), dss_read_seek(), dss_sp_read_packet(), dss_sp_update_state(), dv_frame_offset(), dv_read_seek(), dwt_plane(), dyn_buf_seek(), encode_422_bitstream(), encode_block(), encode_callback(), encode_frame(), encode_init(), encode_plane(), encode_rgb_frame(), envelope_peak(), envelope_peak16(), estimate_pitch(), estimate_timings_from_pts(), ff_adx_decode_header(), ff_ass_split_dialog2(), ff_copy_and_dup(), ff_cos(), ff_dca_exss_parse(), ff_denoise_dct_mmi(), ff_draw_horiz_band(), ff_g723_1_get_residual(), ff_h2645_packet_split(), ff_h264_biweight_pixels4_8_mmi(), ff_h264_chroma422_dc_dequant_idct(), ff_h264_decode_init_vlc(), ff_h264_draw_horiz_band(), ff_h264_filter_mb(), ff_h264_luma_dc_dequant_idct(), ff_h264_weight_pixels4_8_mmi(), ff_h264_weight_pixels8_8_mmi(), ff_hevc_hls_residual_coding(), ff_huff_gen_len_table(), ff_mediacodec_dec_decode(), ff_mpa_synth_filter_TMPL(), ff_mpeg4_encode_mb(), ff_mpv_export_qp_table(), ff_mspel_motion(), ff_rtmpe_gen_pub_key(), ff_rtp_send_latm(), ff_rv34_decode_frame(), ff_snow_get_buffer(), ff_spdif_probe(), ff_spdif_read_packet(), filter(), filter_frame(), find_header(), find_headers_search_validate(), fixup_vorbis_headers(), flac_fifo_read(), flac_fifo_read_wrap(), flac_read_header(), flv_read_header(), fsb_read_header(), g723_1_encode_frame(), gen_fcb_excitation(), get_buffer_with_edge(), get_intra_count(), get_p_cbp(), gmc1_motion(), gsm_decode_block(), h263_mv4_search(), h_block_filter(), hashNext(), hevc_biwgt_copy_12w_msa(), hevc_biwgt_copy_16multx4mult_msa(), hevc_biwgt_copy_4w_msa(), hevc_biwgt_copy_6w_msa(), hevc_biwgt_copy_8w_msa(), hevc_hv_biwgt_4t_4multx8mult_msa(), hevc_hv_biwgt_4t_4x2_msa(), hevc_hv_biwgt_4t_4x4_msa(), hevc_hv_biwgt_4t_6w_msa(), hevc_hv_biwgt_4t_8multx4mult_msa(), hevc_hv_biwgt_4t_8x2_msa(), hevc_hv_biwgt_4t_8x6_msa(), hevc_hv_biwgt_8t_4w_msa(), hevc_hv_biwgt_8t_8multx2mult_msa(), hevc_hz_biwgt_4t_12w_msa(), hevc_hz_biwgt_4t_16w_msa(), hevc_hz_biwgt_4t_24w_msa(), hevc_hz_biwgt_4t_32w_msa(), hevc_hz_biwgt_4t_4x2_msa(), hevc_hz_biwgt_4t_4x4_msa(), hevc_hz_biwgt_4t_4x8multiple_msa(), hevc_hz_biwgt_4t_6w_msa(), hevc_hz_biwgt_4t_8x2_msa(), hevc_hz_biwgt_4t_8x4multiple_msa(), hevc_hz_biwgt_4t_8x6_msa(), hevc_hz_biwgt_8t_16w_msa(), hevc_hz_biwgt_8t_24w_msa(), hevc_hz_biwgt_8t_32w_msa(), hevc_hz_biwgt_8t_48w_msa(), hevc_hz_biwgt_8t_4w_msa(), hevc_hz_biwgt_8t_64w_msa(), hevc_hz_biwgt_8t_8w_msa(), hevc_intra_pred_angular_lower_16width_msa(), hevc_intra_pred_angular_lower_32width_msa(), hevc_intra_pred_angular_lower_4width_msa(), hevc_intra_pred_angular_lower_8width_msa(), hevc_intra_pred_angular_upper_16width_msa(), hevc_intra_pred_angular_upper_32width_msa(), hevc_intra_pred_angular_upper_4width_msa(), hevc_intra_pred_angular_upper_8width_msa(), hevc_sao_band_filter_4width_msa(), hevc_sao_band_filter_8width_msa(), hevc_vt_biwgt_4t_12w_msa(), hevc_vt_biwgt_4t_16w_msa(), hevc_vt_biwgt_4t_24w_msa(), hevc_vt_biwgt_4t_32w_msa(), hevc_vt_biwgt_4t_4x2_msa(), hevc_vt_biwgt_4t_4x4_msa(), hevc_vt_biwgt_4t_4x8multiple_msa(), hevc_vt_biwgt_4t_6w_msa(), hevc_vt_biwgt_4t_8x2_msa(), hevc_vt_biwgt_4t_8x4multiple_msa(), hevc_vt_biwgt_4t_8x6_msa(), hevc_vt_biwgt_8t_12w_msa(), hevc_vt_biwgt_8t_16multx2mult_msa(), hevc_vt_biwgt_8t_4w_msa(), hevc_vt_biwgt_8t_8w_msa(), hls_slice_data_wpp(), horizontal_fill(), imdct_output(), init_gaussian_filter(), init_ref(), ism_seek(), ivr_read_header(), lag_decode_arith_plane(), libvorbis_encode_init(), load_data(), lrc_probe(), lsp2lpc(), luma_mc_bi(), luma_mc_uni(), matroska_parse_frame(), matroska_parse_seekhead_entry(), matroska_parse_wavpack(), mc_dir_part(), mkv_strip_wavpack(), mkv_write_block(), motion_search(), mov_flush_fragment_interleaving(), mov_probe(), mov_read_sidx(), mov_read_trun(), mov_write_sidx_tag(), mp_read_changes_map(), musx_read_header(), mxf_absolute_bodysid_offset(), mxf_compute_ptses_fake_index(), nsv_probe(), ogg_write_vorbiscomment(), oggvorbis_decode_init(), pop_integer(), postProcess_TMPL(), probe(), process_frame(), process_intra_lower_16x16_msa(), process_intra_upper_16x16_msa(), process_options(), ptx_decode_frame(), put_hevc_epel_bi_h(), put_hevc_epel_bi_hv(), put_hevc_epel_bi_v(), put_hevc_epel_uni_h(), put_hevc_epel_uni_hv(), put_hevc_epel_uni_v(), put_hevc_epel_uni_w_h(), put_hevc_epel_uni_w_hv(), put_hevc_epel_uni_w_v(), put_hevc_pel_bi_pixels(), put_hevc_pel_uni_w_pixels(), put_hevc_qpel_bi_h(), put_hevc_qpel_bi_hv(), put_hevc_qpel_bi_v(), put_hevc_qpel_uni_h(), put_hevc_qpel_uni_hv(), put_hevc_qpel_uni_v(), put_hevc_qpel_uni_w_h(), put_hevc_qpel_uni_w_hv(), put_hevc_qpel_uni_w_v(), qdm2_fft_decode_tones(), qdm2_fft_init_coefficient(), qdm2_fft_tone_synthesizer(), quantize_value(), radix_count(), read_braindead_odml_indx(), read_frame_data(), read_header(), read_packet(), read_tfra(), read_ts(), read_uncompressed_sgi(), read_var_block_data(), request_frame(), revert_channel_correlation(), ring_drain(), rpl_read_header(), rv10_decode_frame(), sao_edge_restore_0(), sao_edge_restore_1(), seg_write_packet(), seq_decode_op3(), set_sar(), silk_decode_lpc(), silk_lsf2lpc(), sofalizer_convolute(), sofalizer_fast_convolute(), svq1_decode_init(), svq1_encode_plane(), svq3_decode_init(), svq3_luma_dc_dequant_idct_c(), tgv_decode_inter(), transform_skip(), unpack(), unpack_intraframe(), unpack_parse_unit(), v_block_filter(), vb_decode_framedata(), vble_decode_frame(), vble_restore_plane(), vcr1_decode_frame(), vorbis_floor1_decode(), vp3_draw_horiz_band(), vp56_get_vectors_predictors(), vpk_read_header(), write_mb_info(), write_packet(), writer_print_data(), writer_print_integers(), wtvfile_seek(), x11grab_read_header(), x8_vlc_init(), xan_decode_chroma(), xvag_read_header(), yae_flush(), yuv2NBPS(), yuv2plane1_8_c(), and yuv2yuvX_TMPL().

const AVFilterPad spp_inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_input,
        .filter_frame = filter_frame,
    },
    { NULL }
}

Definition at line 499 of file vf_spp.c.

const AVFilterPad spp_outputs[]

static

Initial value:

= {
    {
        .name = "default",
        .type = AVMEDIA_TYPE_VIDEO,
    },
    { NULL }
}

Definition at line 509 of file vf_spp.c.

AVFilter ff_vf_spp

Initial value:

= {
    .name            = "spp",
    .description     = NULL_IF_CONFIG_SMALL("Apply a simple post processing filter."),
    .priv_size       = sizeof(SPPContext),
    .init_dict       = init_dict,
    .uninit          = uninit,
    .query_formats   = query_formats,
    .inputs          = spp_inputs,
    .outputs         = spp_outputs,
    .process_command = process_command,
    .priv_class      = &spp_class,
    .flags           = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
}

Definition at line 517 of file vf_spp.c.