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Created attachment 847 [details]
Ogg Vorbis file that cannot be decoded

SDL_sound (current hg stable-1.0) cannot decode the attached file in whole.  A part of it is decoded, but at the wrong samplerate.  The SOUND_SAMPLEFLAG_ERROR is set in the sample, but Sound_GetError() doesn't return anything.

SDL_mixer has no problems decoding the file with Mix_LoadWAV_RW, so it's not a problem with the file.  SDL_mixer is unsuitable though, because it doesn't support partial decoding; it decodes the whole file in one go.

libvorbis 1.3.2
libogg 1.3.0

This is a test program that demonstrates the bug:

#include <stdio.h>
#include <SDL_sound.h>

int main(void)
{
    if (SDL_Init(SDL_INIT_AUDIO) != 0) {
        printf("SDL_Init() failed: %s\n", SDL_GetError());
        return 1;
    }

    if (Sound_Init() == 0) {
        printf("Sound_Init() failed: %s\n", Sound_GetError());
        return 1;
    }

    SDL_RWops* rw = SDL_RWFromFile("test.ogg", "rb");
    if (rw == 0) {
        printf("ERROR: %s\n", SDL_GetError());
        return 1;
    }

    Sound_AudioInfo wantedFormat;
    wantedFormat.channels = 2;
    wantedFormat.rate = 44100;
    wantedFormat.format = AUDIO_S16LSB;

    Sound_Sample* sample = Sound_NewSample(rw, "OGG", &wantedFormat, 4096);
    if (sample == 0) {
        printf("ERROR: %s\n", Sound_GetError());
        return 1;
    }
    Sound_DecodeAll(sample);
    if (sample->flags & SOUND_SAMPLEFLAG_ERROR) {
        printf("ERROR: %s\n", Sound_GetError());
    }

    Sound_Quit();
    SDL_Quit();
    return 0;
}