mirror of https://github.com/ZDoom/fluidsynth.git
93 lines
2.0 KiB
C
93 lines
2.0 KiB
C
/*
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* This is a C99 program that demonstrates how to load a soundfont from memory.
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*
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* It only gives a brief overview on how to achieve this with fluidsynth's API.
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* Although it should compile, it's highly incomplete, as the details of it's
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* implementation depend on the users needs.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <fluidsynth.h>
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void *my_open(const char *filename)
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{
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void *p;
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if(filename[0] != '&')
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{
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return NULL;
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}
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sscanf(filename, "&%p", &p);
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return p;
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}
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int my_read(void *buf, int count, void *handle)
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{
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// NYI
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return FLUID_OK;
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}
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int my_seek(void *handle, long offset, int origin)
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{
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// NYI
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return FLUID_OK;
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}
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int my_close(void *handle)
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{
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// NYI
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return FLUID_OK;
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}
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long my_tell(void *handle)
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{
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// NYI
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return 0;
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}
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int main()
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{
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int err = 0;
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fluid_settings_t *settings = new_fluid_settings();
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fluid_synth_t *synth = new_fluid_synth(settings);
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fluid_sfloader_t *my_sfloader = new_fluid_defsfloader(settings);
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fluid_sfloader_set_callbacks(my_sfloader,
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my_open,
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my_read,
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my_seek,
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my_tell,
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my_close);
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fluid_synth_add_sfloader(synth, my_sfloader);
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char abused_filename[64];
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const void *pointer_to_sf2_in_mem = 0x1234Beef; // some pointer to where the soundfont shall be loaded from
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sprintf(abused_filename, "&%p", pointer_to_sf2_in_mem);
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int id = fluid_synth_sfload(synth, abused_filename, 0);
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/* now my_open() will be called with abused_filename and should have opened the memory region */
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if(id == FLUID_FAILED)
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{
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puts("oops");
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err = -1;
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goto cleanup;
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}
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/*
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* ~~~ Do your daily business here ~~~
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*/
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cleanup:
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/* deleting the synth also deletes my_sfloader */
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delete_fluid_synth(synth);
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delete_fluid_settings(settings);
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return err;
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}
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