mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-28 12:41:05 +00:00
92 lines
4.1 KiB
C
92 lines
4.1 KiB
C
/*
|
|
* This source code is public domain.
|
|
*
|
|
* Authors: Kenton Varda <temporal@gauge3d.org> (C interface wrapper)
|
|
*/
|
|
|
|
#ifndef MODPLUG_H__INCLUDED
|
|
#define MODPLUG_H__INCLUDED
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
struct _ModPlugFile;
|
|
typedef struct _ModPlugFile ModPlugFile;
|
|
|
|
/* Load a mod file. [data] should point to a block of memory containing the complete
|
|
* file, and [size] should be the size of that block.
|
|
* Return the loaded mod file on success, or NULL on failure. */
|
|
ModPlugFile* ModPlug_Load(const void* data, int size);
|
|
/* Unload a mod file. */
|
|
void ModPlug_Unload(ModPlugFile* file);
|
|
|
|
/* Read sample data into the buffer. Returns the number of bytes read. If the end
|
|
* of the mod has been reached, zero is returned. */
|
|
int ModPlug_Read(ModPlugFile* file, void* buffer, int size);
|
|
|
|
/* Get the name of the mod. The returned buffer is stored within the ModPlugFile
|
|
* structure and will remain valid until you unload the file. */
|
|
const char* ModPlug_GetName(ModPlugFile* file);
|
|
|
|
/* Get the length of the mod, in milliseconds. Note that this result is not always
|
|
* accurate, especially in the case of mods with loops. */
|
|
int ModPlug_GetLength(ModPlugFile* file);
|
|
|
|
/* Seek to a particular position in the song. Note that seeking and MODs don't mix very
|
|
* well. Some mods will be missing instruments for a short time after a seek, as ModPlug
|
|
* does not scan the sequence backwards to find out which instruments were supposed to be
|
|
* playing at that time. (Doing so would be difficult and not very reliable.) Also,
|
|
* note that seeking is not very exact in some mods -- especially those for which
|
|
* ModPlug_GetLength() does not report the full length. */
|
|
void ModPlug_Seek(ModPlugFile* file, int millisecond);
|
|
|
|
enum _ModPlug_Flags
|
|
{
|
|
MODPLUG_ENABLE_OVERSAMPLING = 1 << 0, /* Enable oversampling (*highly* recommended) */
|
|
MODPLUG_ENABLE_NOISE_REDUCTION = 1 << 1, /* Enable noise reduction */
|
|
MODPLUG_ENABLE_REVERB = 1 << 2, /* Enable reverb */
|
|
MODPLUG_ENABLE_MEGABASS = 1 << 3, /* Enable megabass */
|
|
MODPLUG_ENABLE_SURROUND = 1 << 4 /* Enable surround sound. */
|
|
};
|
|
|
|
enum _ModPlug_ResamplingMode
|
|
{
|
|
MODPLUG_RESAMPLE_NEAREST = 0, /* No interpolation (very fast, extremely bad sound quality) */
|
|
MODPLUG_RESAMPLE_LINEAR = 1, /* Linear interpolation (fast, good quality) */
|
|
MODPLUG_RESAMPLE_SPLINE = 2, /* Cubic spline interpolation (high quality) */
|
|
MODPLUG_RESAMPLE_FIR = 3 /* 8-tap fir filter (extremely high quality) */
|
|
};
|
|
|
|
typedef struct _ModPlug_Settings
|
|
{
|
|
int mFlags; /* One or more of the MODPLUG_ENABLE_* flags above, bitwise-OR'ed */
|
|
|
|
/* Note that ModPlug always decodes sound at 44100kHz, 32 bit, stereo and then
|
|
* down-mixes to the settings you choose. */
|
|
int mChannels; /* Number of channels - 1 for mono or 2 for stereo */
|
|
int mBits; /* Bits per sample - 8, 16, or 32 */
|
|
int mFrequency; /* Sampling rate - 11025, 22050, or 44100 */
|
|
int mResamplingMode; /* One of MODPLUG_RESAMPLE_*, above */
|
|
|
|
int mReverbDepth; /* Reverb level 0(quiet)-100(loud) */
|
|
int mReverbDelay; /* Reverb delay in ms, usually 40-200ms */
|
|
int mBassAmount; /* XBass level 0(quiet)-100(loud) */
|
|
int mBassRange; /* XBass cutoff in Hz 10-100 */
|
|
int mSurroundDepth; /* Surround level 0(quiet)-100(heavy) */
|
|
int mSurroundDelay; /* Surround delay in ms, usually 5-40ms */
|
|
int mLoopCount; /* Number of times to loop. Zero prevents looping.
|
|
-1 loops forever. */
|
|
} ModPlug_Settings;
|
|
|
|
/* Get and set the mod decoder settings. All options, except for channels, bits-per-sample,
|
|
* sampling rate, and loop count, will take effect immediately. Those options which don't
|
|
* take effect immediately will take effect the next time you load a mod. */
|
|
void ModPlug_GetSettings(ModPlug_Settings* settings);
|
|
void ModPlug_SetSettings(const ModPlug_Settings* settings);
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif
|