compress: Kill non-btr code.
authorAndre Noll <maan@systemlinux.org>
Tue, 12 Jan 2010 01:03:53 +0000 (02:03 +0100)
committerAndre Noll <maan@systemlinux.org>
Tue, 12 Jan 2010 01:03:53 +0000 (02:03 +0100)
compress_filter.c

index 3905561..8e6b1c4 100644 (file)
@@ -40,47 +40,6 @@ struct private_compress_data {
        int peak;
 };
 
-static ssize_t compress(char *inbuf, size_t inbuf_len, struct filter_node *fn)
-{
-       size_t i, length = PARA_MIN((inbuf_len / 2) * 2,
-               (fn->bufsize - fn->loaded) / 2 * 2);
-       struct private_compress_data *pcd = fn->private_data;
-       int16_t *ip = (int16_t *)inbuf, *op = (int16_t *)(fn->buf + fn->loaded);
-       unsigned gain_shift = pcd->conf->inertia_arg + pcd->conf->damp_arg,
-               mask = (1 << pcd->conf->blocksize_arg) - 1;
-
-       if (!length)
-               return 0;
-       for (i = 0; i < length / 2; i++) {
-               /* be careful in that heat, my dear */
-               int sample = *ip++, adjusted_sample = (PARA_ABS(sample) *
-                       pcd->current_gain) >> gain_shift;
-               if (adjusted_sample > 32767) { /* clip */
-                       PARA_NOTICE_LOG("clip: sample: %d, adjusted sample: %d\n",
-                               sample, adjusted_sample);
-                       adjusted_sample = 32767;
-                       pcd->current_gain = (3 * pcd->current_gain +
-                               (1 << pcd->conf->inertia_arg)) / 4;
-                       pcd->peak = 0;
-               } else
-                       pcd->peak = PARA_MAX(pcd->peak, adjusted_sample);
-               *op++ = sample >= 0? adjusted_sample : -adjusted_sample;
-               if (++pcd->num_samples & mask)
-                       continue;
-//             PARA_DEBUG_LOG("gain: %u, peak: %u\n", pcd->current_gain,
-//                     pcd->peak);
-               if (pcd->peak < pcd->conf->target_level_arg) {
-                       if (pcd->current_gain < pcd->max_gain)
-                               pcd->current_gain++;
-               } else
-                       pcd->current_gain = PARA_MAX(pcd->current_gain - 2,
-                               1U << pcd->conf->inertia_arg);
-               pcd->peak = 0;
-       }
-       fn->loaded += length;
-       return length;
-}
-
 static void close_compress(struct filter_node *fn)
 {
        free(fn->private_data);
@@ -205,7 +164,6 @@ void compress_filter_init(struct filter *f)
        compress_cmdline_parser_init(&dummy);
        f->open = open_compress;
        f->close = close_compress;
-       f->convert = compress;
        f->pre_select = generic_filter_pre_select;
        f->post_select = compress_post_select;
        f->parse_config = compress_parse_config;