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FFmpeg
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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"
Include dependency graph for libmodplug.c:
Go to the source code of this file.
Data Structures | |
| struct | ModPlugContext |
Macros | |
| #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) |
Typedefs | |
| typedef struct ModPlugContext | ModPlugContext |
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
Macro Definition Documentation
| #define ADD_META_MULTIPLE_ENTRIES | ( | entry_name, | |
| fname | |||
| ) |
Value:
do { \
char item_name[64] = {0}; \
n++; \
} \
\
av_free(extra); \
} \
} while (0)
initialize output if(nPeaks >3)%at least 3 peaks in spectrum for trying to find f0 nf0peaks
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
Definition: mem.c:183
loc<=1||loc >=hN-1 continue()
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:62
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFilterBuffer structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Buffer references ownership and permissions
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame This method is called when a frame is wanted on an output For an it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return it should return
Definition: filter_design.txt:216
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 | ( | x | ) | offsetof(ModPlugContext, x) |
Definition at line 81 of file libmodplug.c.
Value:
do { \
} while (0)
Definition: graph2dot.c:48
static void write_text(uint8_t *dst, const char *s, int linesize, int x, int y)
Definition: libmodplug.c:251
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)
initialize output if(nPeaks >3)%at least 3 peaks in spectrum for trying to find f0 nf0peaks
Definition at line 101 of file libmodplug.c.
Referenced by modplug_read_header().
Typedef Documentation
| typedef struct ModPlugContext ModPlugContext |
Enumeration Type Documentation
| enum var_name |
Definition at line 70 of file libmodplug.c.
Function Documentation
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static |
Definition at line 132 of file libmodplug.c.
Referenced by modplug_read_header().
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static |
Definition at line 333 of file libmodplug.c.
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static |
Definition at line 163 of file libmodplug.c.
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static |
Definition at line 268 of file libmodplug.c.
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static |
Definition at line 341 of file libmodplug.c.
Definition at line 251 of file libmodplug.c.
Variable Documentation
| AVInputFormat ff_libmodplug_demuxer |
Initial value:
= {
.name = "libmodplug",
.long_name = NULL_IF_CONFIG_SMALL("ModPlug demuxer"),
.priv_data_size = sizeof(ModPlugContext),
.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,
}
static int modplug_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: libmodplug.c:268
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
struct ModPlugContext ModPlugContext
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: libavutil/internal.h:123
static int modplug_read_seek(AVFormatContext *s, int stream_idx, int64_t ts, int flags)
Definition: libmodplug.c:341
Definition at line 357 of file libmodplug.c.
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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.
|
static |
Initial value:
= {
{"noise_reduction", "Enable noise reduction 0(off)-1(on)", OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, D},
{"reverb_depth", "Reverb level 0(quiet)-100(loud)", OFFSET(reverb_depth), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 100, D},
{"reverb_delay", "Reverb delay in ms, usually 40-200ms", OFFSET(reverb_delay), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D},
{"bass_amount", "XBass level 0(quiet)-100(loud)", OFFSET(bass_amount), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 100, D},
{"bass_range", "XBass cutoff in Hz 10-100", OFFSET(bass_range), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 100, D},
{"surround_depth", "Surround level 0(quiet)-100(heavy)", OFFSET(surround_depth), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 100, D},
{"surround_delay", "Surround delay in ms, usually 5-40ms", OFFSET(surround_delay), AV_OPT_TYPE_INT, {.i64 = 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, {.i64 = 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, {.i64 = 0}, 0, 1, D},
{"video_stream_w", "Video stream width in char (one char = 8x8px)", OFFSET(w), AV_OPT_TYPE_INT, {.i64 = 30}, 20, 512, D},
{"video_stream_h", "Video stream height in char (one char = 8x8px)", OFFSET(h), AV_OPT_TYPE_INT, {.i64 = 30}, 20, 512, D},
{"video_stream_ptxt", "Print speed, tempo, order, ... in video stream", OFFSET(print_textinfo), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, D},
{NULL},
}
Definition: opt.h:222
Definition: opt.h:226
Definition at line 83 of file libmodplug.c.
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static |
Initial value:
= {
"x", "y",
"w", "h",
"t",
"speed", "tempo", "order", "pattern", "row",
}
Definition at line 62 of file libmodplug.c.
Referenced by modplug_read_header().
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