music_flac.h
author Sam Lantinga <slouken@libsdl.org>
Wed, 17 Jun 2015 00:11:41 -0700
changeset 705 fe757163b8f7
parent 625 1d489d8ec2e0
child 711 f40c5ac95b12
permissions -rw-r--r--
Fixed bug 3018 - Loading MIDI music using FluidSynth leaks memory.

Philipp Wiesemann

There is a memory leak in fluidsynth.c and fluidsynth_loadsong_RW_internal(). The allocated temporary buffer is not deleted if fluid_player_add_mem() returns FLUID_OK.
     1 /*
     2   SDL_mixer:  An audio mixer library based on the SDL library
     3   Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 
    21   Header to handle loading FLAC music files in SDL.
    22     ~ Austen Dicken (admin@cvpcs.org)
    23 */
    24 
    25 /* $Id:  $ */
    26 
    27 #ifdef FLAC_MUSIC
    28 
    29 #include <FLAC/stream_decoder.h>
    30 
    31 typedef struct {
    32     FLAC__uint64 sample_size;
    33     unsigned sample_rate;
    34     unsigned channels;
    35     unsigned bits_per_sample;
    36     FLAC__uint64 total_samples;
    37 
    38     // the following are used to handle the callback nature of the writer
    39     int max_to_read;
    40     char *data;             // pointer to beginning of data array
    41     int data_len;           // size of data array
    42     int data_read;          // amount of data array used
    43     char *overflow;         // pointer to beginning of overflow array
    44     int overflow_len;       // size of overflow array
    45     int overflow_read;      // amount of overflow array used
    46 } FLAC_Data;
    47 
    48 typedef struct {
    49     int playing;
    50     int volume;
    51     int section;
    52     FLAC__StreamDecoder *flac_decoder;
    53     FLAC_Data flac_data;
    54     SDL_RWops *src;
    55     int freesrc;
    56     SDL_AudioCVT cvt;
    57     int len_available;
    58     Uint8 *snd_available;
    59 } FLAC_music;
    60 
    61 /* Initialize the FLAC player, with the given mixer settings
    62    This function returns 0, or -1 if there was an error.
    63  */
    64 extern int FLAC_init(SDL_AudioSpec *mixer);
    65 
    66 /* Set the volume for a FLAC stream */
    67 extern void FLAC_setvolume(FLAC_music *music, int volume);
    68 
    69 /* Load an FLAC stream from an SDL_RWops object */
    70 extern FLAC_music *FLAC_new_RW(SDL_RWops *src, int freesrc);
    71 
    72 /* Start playback of a given FLAC stream */
    73 extern void FLAC_play(FLAC_music *music);
    74 
    75 /* Return non-zero if a stream is currently playing */
    76 extern int FLAC_playing(FLAC_music *music);
    77 
    78 /* Play some of a stream previously started with FLAC_play() */
    79 extern int FLAC_playAudio(FLAC_music *music, Uint8 *stream, int len);
    80 
    81 /* Stop playback of a stream previously started with FLAC_play() */
    82 extern void FLAC_stop(FLAC_music *music);
    83 
    84 /* Close the given FLAC stream */
    85 extern void FLAC_delete(FLAC_music *music);
    86 
    87 /* Jump (seek) to a given position (time is in seconds) */
    88 extern void FLAC_jump_to_time(FLAC_music *music, double time);
    89 
    90 #endif /* FLAC_MUSIC */