return off;
}
-static av_cold int init_atrac3_transforms(ATRAC3Context *q)
+static av_cold void init_atrac3_window(void)
{
float enc_window[256];
int i;
for (i = 0; i < 256; i++)
enc_window[i] = (sin(((i + 0.5) / 256.0 - 0.5) * M_PI) + 1.0) * 0.5;
- if (!mdct_window[0]) {
- for (i = 0; i < 256; i++) {
- mdct_window[i] = enc_window[i] /
- (enc_window[ i] * enc_window[ i] +
- enc_window[255 - i] * enc_window[255 - i]);
- mdct_window[511 - i] = mdct_window[i];
- }
+ for (i = 0; i < 256; i++) {
+ mdct_window[i] = enc_window[i] /
+ (enc_window[ i] * enc_window[ i] +
+ enc_window[255 - i] * enc_window[255 - i]);
+ mdct_window[511 - i] = mdct_window[i];
}
-
- /* initialize the MDCT transform */
- return ff_mdct_init(&q->mdct_ctx, 9, 1, 1.0 / 32768);
}
static av_cold int atrac3_decode_close(AVCodecContext *avctx)
avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
- if ((ret = init_atrac3_transforms(q))) {
+ /* initialize the MDCT transform */
+ if ((ret = ff_mdct_init(&q->mdct_ctx, 9, 1, 1.0 / 32768)) < 0) {
av_log(avctx, AV_LOG_ERROR, "Error initializing MDCT\n");
av_freep(&q->decoded_bytes_buffer);
return ret;
}
+ init_atrac3_window();
ff_atrac_generate_tables();
/* Generate gain tables */