libavformat/libmodplug.c File Reference

ModPlug demuxer. More...

#include <libmodplug/modplug.h>
#include "libavutil/avstring.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "avformat.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct  ModPlugContext

Defines

#define FF_MODPLUG_MAX_FILE_SIZE   (100 * 1<<20)
#define FF_MODPLUG_DEF_FILE_SIZE   ( 5 * 1<<20)
#define OFFSET(x)   offsetof(ModPlugContext, x)
#define D   AV_OPT_FLAG_DECODING_PARAM
#define SET_OPT_IF_REQUESTED(libopt, opt, flag)
#define ADD_META_MULTIPLE_ENTRIES(entry_name, fname)
#define AUDIO_PKT_SIZE   512
#define PRINT_INFO(line, name, idvalue)

Enumerations

enum  var_name {
  VAR_B1, VAR_B2, VAR_S1, VAR_S2,
  VAR_T1, VAR_T2, VAR_NB, VAR_N,
  VAR_T, VAR_S, VAR_VARS_NB, VAR_W,
  VAR_H, VAR_CW, VAR_CH, VAR_HSUB,
  VAR_VSUB, VARS_NB, VAR_IN_W, VAR_IW,
  VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW,
  VAR_OUT_H, VAR_OH, VAR_A, VAR_SAR,
  VAR_DAR, VAR_HSUB, VAR_VSUB, VAR_X,
  VAR_Y, VAR_N, VAR_POS, VAR_T,
  VAR_VARS_NB, VAR_DAR, VAR_HSUB, VAR_VSUB,
  VAR_LINE_H, VAR_LH, VAR_MAIN_H, VAR_h,
  VAR_H, VAR_MAIN_W, VAR_w, VAR_W,
  VAR_MAX_GLYPH_A, VAR_ASCENT, VAR_MAX_GLYPH_D, VAR_DESCENT,
  VAR_MAX_GLYPH_H, VAR_MAX_GLYPH_W, VAR_N, VAR_SAR,
  VAR_T, VAR_TEXT_H, VAR_TH, VAR_TEXT_W,
  VAR_TW, VAR_X, VAR_Y, VAR_VARS_NB,
  VAR_W, VAR_H, VAR_VAL, VAR_MAXVAL,
  VAR_MINVAL, VAR_NEGVAL, VAR_CLIPVAL, VAR_VARS_NB,
  VAR_MAIN_W, VAR_MW, VAR_MAIN_H, VAR_MH,
  VAR_OVERLAY_W, VAR_OW, VAR_OVERLAY_H, VAR_OH,
  VAR_VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H,
  VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H,
  VAR_OH, VAR_X, VAR_Y, VAR_A,
  VAR_SAR, VAR_DAR, VAR_HSUB, VAR_VSUB,
  VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H,
  VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H,
  VAR_OH, VAR_A, VAR_SAR, VAR_DAR,
  VAR_HSUB, VAR_VSUB, VARS_NB, VAR_TB,
  VAR_PTS, VAR_START_PTS, VAR_PREV_PTS, VAR_PREV_SELECTED_PTS,
  VAR_T, VAR_START_T, VAR_PREV_T, VAR_PREV_SELECTED_T,
  VAR_PICT_TYPE, VAR_PICT_TYPE_I, VAR_PICT_TYPE_P, VAR_PICT_TYPE_B,
  VAR_PICT_TYPE_S, VAR_PICT_TYPE_SI, VAR_PICT_TYPE_SP, VAR_PICT_TYPE_BI,
  VAR_INTERLACE_TYPE, VAR_INTERLACE_TYPE_P, VAR_INTERLACE_TYPE_T, VAR_INTERLACE_TYPE_B,
  VAR_N, VAR_SELECTED_N, VAR_PREV_SELECTED_N, VAR_KEY,
  VAR_POS, VAR_VARS_NB, VAR_INTERLACED, VAR_N,
  VAR_POS, VAR_PREV_INPTS, VAR_PREV_OUTPTS, VAR_PTS,
  VAR_STARTPTS, VAR_TB, VAR_VARS_NB, VAR_AVTB,
  VAR_INTB, VAR_VARS_NB, VAR_X, VAR_Y,
  VAR_W, VAR_H, VAR_TIME, VAR_SPEED,
  VAR_TEMPO, VAR_ORDER, VAR_PATTERN, VAR_ROW,
  VAR_VARS_NB
}

Functions

static int modplug_load_metadata (AVFormatContext *s)
static int modplug_read_header (AVFormatContext *s)
static void write_text (uint8_t *dst, const char *s, int linesize, int x, int y)
static int modplug_read_packet (AVFormatContext *s, AVPacket *pkt)
static int modplug_read_close (AVFormatContext *s)
static int modplug_read_seek (AVFormatContext *s, int stream_idx, int64_t ts, int flags)

Variables

static const char * var_names []
static const AVOption options []
static const AVClass modplug_class
AVInputFormat ff_libmodplug_demuxer


Detailed Description

ModPlug demuxer.

Todo:
better probing than extensions matching

Definition in file libmodplug.c.


Define Documentation

#define ADD_META_MULTIPLE_ENTRIES ( entry_name,
fname   ) 

Value:

do {                      \
    if (n_## entry_name ##s) {                                                 \
        unsigned i, n = 0;                                                     \
                                                                               \
        for (i = 0; i < n_## entry_name ##s; i++) {                            \
            char item_name[64] = {0};                                          \
            fname(f, i, item_name);                                            \
            if (!*item_name)                                                   \
                continue;                                                      \
            if (n)                                                             \
                av_dict_set(&s->metadata, #entry_name, "\n", AV_DICT_APPEND);  \
            av_dict_set(&s->metadata, #entry_name, item_name, AV_DICT_APPEND); \
            n++;                                                               \
        }                                                                      \
                                                                               \
        extra = av_asprintf(", %u/%u " #entry_name "%s",                       \
                            n, n_## entry_name ##s, n > 1 ? "s" : "");         \
        if (!extra)                                                            \
            return AVERROR(ENOMEM);                                            \
        av_dict_set(&s->metadata, "extra info", extra, AV_DICT_APPEND);        \
        av_free(extra);                                                        \
    }                                                                          \
} while (0)

Definition at line 108 of file libmodplug.c.

Referenced by modplug_load_metadata().

#define AUDIO_PKT_SIZE   512

Definition at line 161 of file libmodplug.c.

Referenced by modplug_read_header(), and modplug_read_packet().

#define D   AV_OPT_FLAG_DECODING_PARAM

Definition at line 82 of file libmodplug.c.

#define FF_MODPLUG_DEF_FILE_SIZE   ( 5 * 1<<20)

Definition at line 79 of file libmodplug.c.

Referenced by modplug_read_header().

#define FF_MODPLUG_MAX_FILE_SIZE   (100 * 1<<20)

Definition at line 78 of file libmodplug.c.

#define OFFSET (  )     offsetof(ModPlugContext, x)

Definition at line 81 of file libmodplug.c.

#define PRINT_INFO ( line,
name,
idvalue   ) 

Value:

do {                            \
    snprintf(intbuf, sizeof(intbuf), "%.0f", var_values[idvalue]);      \
    write_text(pkt->data, name ":", modplug->linesize,  0+1, line+1);   \
    write_text(pkt->data, intbuf,   modplug->linesize, 10+1, line+1);   \
} while (0)

Definition at line 262 of file libmodplug.c.

Referenced by modplug_read_packet().

#define SET_OPT_IF_REQUESTED ( libopt,
opt,
flag   ) 

Value:

do {        \
    if (modplug->opt) {                                     \
        settings.libopt  = modplug->opt;                    \
        settings.mFlags |= flag;                            \
    }                                                       \
} while (0)

Definition at line 101 of file libmodplug.c.

Referenced by modplug_read_header().


Enumeration Type Documentation

enum var_name

Enumerator:
VAR_B1 
VAR_B2 
VAR_S1 
VAR_S2 
VAR_T1 
VAR_T2 
VAR_NB 
VAR_N 
VAR_T 
VAR_S 
VAR_VARS_NB 
VAR_W 
VAR_H 
VAR_CW 
VAR_CH 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_A 
VAR_SAR 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VAR_X 
VAR_Y 
VAR_N 
VAR_POS 
VAR_T 
VAR_VARS_NB 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VAR_LINE_H 
VAR_LH 
VAR_MAIN_H 
VAR_h 
VAR_H 
VAR_MAIN_W 
VAR_w 
VAR_W 
VAR_MAX_GLYPH_A 
VAR_ASCENT 
VAR_MAX_GLYPH_D 
VAR_DESCENT 
VAR_MAX_GLYPH_H 
VAR_MAX_GLYPH_W 
VAR_N 
VAR_SAR 
VAR_T 
VAR_TEXT_H 
VAR_TH 
VAR_TEXT_W 
VAR_TW 
VAR_X 
VAR_Y 
VAR_VARS_NB 
VAR_W 
VAR_H 
VAR_VAL 
VAR_MAXVAL 
VAR_MINVAL 
VAR_NEGVAL 
VAR_CLIPVAL 
VAR_VARS_NB 
VAR_MAIN_W 
VAR_MW 
VAR_MAIN_H 
VAR_MH 
VAR_OVERLAY_W 
VAR_OW 
VAR_OVERLAY_H 
VAR_OH 
VAR_VARS_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_X 
VAR_Y 
VAR_A 
VAR_SAR 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_A 
VAR_SAR 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_TB 
VAR_PTS 
VAR_START_PTS 
VAR_PREV_PTS 
VAR_PREV_SELECTED_PTS 
VAR_T 
VAR_START_T 
VAR_PREV_T 
VAR_PREV_SELECTED_T 
VAR_PICT_TYPE 
VAR_PICT_TYPE_I 
VAR_PICT_TYPE_P 
VAR_PICT_TYPE_B 
VAR_PICT_TYPE_S 
VAR_PICT_TYPE_SI 
VAR_PICT_TYPE_SP 
VAR_PICT_TYPE_BI 
VAR_INTERLACE_TYPE 
VAR_INTERLACE_TYPE_P 
VAR_INTERLACE_TYPE_T 
VAR_INTERLACE_TYPE_B 
VAR_N 
VAR_SELECTED_N 
VAR_PREV_SELECTED_N 
VAR_KEY 
VAR_POS 
VAR_VARS_NB 
VAR_INTERLACED 
VAR_N 
VAR_POS 
VAR_PREV_INPTS 
VAR_PREV_OUTPTS 
VAR_PTS 
VAR_STARTPTS 
VAR_TB 
VAR_VARS_NB 
VAR_AVTB 
VAR_INTB 
VAR_VARS_NB 
VAR_X 
VAR_Y 
VAR_W 
VAR_H 
VAR_TIME 
VAR_SPEED 
VAR_TEMPO 
VAR_ORDER 
VAR_PATTERN 
VAR_ROW 
VAR_VARS_NB 

Definition at line 70 of file libmodplug.c.


Function Documentation

static int modplug_load_metadata ( AVFormatContext s  )  [static]

Definition at line 132 of file libmodplug.c.

Referenced by modplug_read_header().

static int modplug_read_close ( AVFormatContext s  )  [static]

Definition at line 333 of file libmodplug.c.

static int modplug_read_header ( AVFormatContext s  )  [static]

Definition at line 163 of file libmodplug.c.

static int modplug_read_packet ( AVFormatContext s,
AVPacket pkt 
) [static]

Definition at line 268 of file libmodplug.c.

static int modplug_read_seek ( AVFormatContext s,
int  stream_idx,
int64_t  ts,
int  flags 
) [static]

Definition at line 341 of file libmodplug.c.

static void write_text ( uint8_t dst,
const char *  s,
int  linesize,
int  x,
int  y 
) [static]

Definition at line 251 of file libmodplug.c.


Variable Documentation

Initial value:

 {
    .name           = "libmodplug",
    .long_name      = NULL_IF_CONFIG_SMALL("ModPlug demuxer"),
    .priv_data_size = sizeof(ModPlugContext),
    .read_header    = modplug_read_header,
    .read_packet    = modplug_read_packet,
    .read_close     = modplug_read_close,
    .read_seek      = modplug_read_seek,
    .extensions     = "669,abc,amf,ams,dbm,dmf,dsm,far,it,mdl,med,mid,mod,mt2,mtm,okt,psm,ptm,s3m,stm,ult,umx,xm"
                      ",itgz,itr,itz,mdgz,mdr,mdz,s3gz,s3r,s3z,xmgz,xmr,xmz", 
    .priv_class     = &modplug_class,
}

Definition at line 357 of file libmodplug.c.

const AVClass modplug_class [static]

Initial value:

 {
    .class_name = "ModPlug demuxer",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 350 of file libmodplug.c.

const AVOption options[] [static]

Initial value:

 {
    {"noise_reduction", "Enable noise reduction 0(off)-1(on)",  OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.dbl = 0}, 0,       1, D},
    {"reverb_depth",    "Reverb level 0(quiet)-100(loud)",      OFFSET(reverb_depth),    AV_OPT_TYPE_INT, {.dbl = 0}, 0,     100, D},
    {"reverb_delay",    "Reverb delay in ms, usually 40-200ms", OFFSET(reverb_delay),    AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, D},
    {"bass_amount",     "XBass level 0(quiet)-100(loud)",       OFFSET(bass_amount),     AV_OPT_TYPE_INT, {.dbl = 0}, 0,     100, D},
    {"bass_range",      "XBass cutoff in Hz 10-100",            OFFSET(bass_range),      AV_OPT_TYPE_INT, {.dbl = 0}, 0,     100, D},
    {"surround_depth",  "Surround level 0(quiet)-100(heavy)",   OFFSET(surround_depth),  AV_OPT_TYPE_INT, {.dbl = 0}, 0,     100, D},
    {"surround_delay",  "Surround delay in ms, usually 5-40ms", OFFSET(surround_delay),  AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, D},
    {"max_size",        "Max file size supported (in bytes). Default is 5MB. Set to 0 for no limit (not recommended)",
     OFFSET(max_size), AV_OPT_TYPE_INT, {.dbl = FF_MODPLUG_DEF_FILE_SIZE}, 0, FF_MODPLUG_MAX_FILE_SIZE, D},
    {"video_stream_expr", "Color formula",                                  OFFSET(color_eval),     AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, D},
    {"video_stream",      "Make demuxer output a video stream",             OFFSET(video_stream),   AV_OPT_TYPE_INT, {.dbl = 0},   0,   1, D},
    {"video_stream_w",    "Video stream width in char (one char = 8x8px)",  OFFSET(w),              AV_OPT_TYPE_INT, {.dbl = 30}, 20, 512, D},
    {"video_stream_h",    "Video stream height in char (one char = 8x8px)", OFFSET(h),              AV_OPT_TYPE_INT, {.dbl = 30}, 20, 512, D},
    {"video_stream_ptxt", "Print speed, tempo, order, ... in video stream", OFFSET(print_textinfo), AV_OPT_TYPE_INT, {.dbl = 1},   0,   1, D},
    {NULL},
}

Definition at line 83 of file libmodplug.c.

const char* var_names[] [static]

Initial value:

 {
    "x", "y",
    "w", "h",
    "t",
    "speed", "tempo", "order", "pattern", "row",
    NULL
}

Definition at line 62 of file libmodplug.c.


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