flacdec: Fix mono output.

[paraslash.git] / flacdec_filter.c

diff --git a/flacdec_filter.c b/flacdec_filter.c
index 40246f24b625c3a5236df47149bb9179633eb5f9..b51ac3bdee671dba91dc444fdd333126a912677a 100644 (file)
--- a/flacdec_filter.c
+++ b/flacdec_filter.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2011-2012 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2011-2013 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -25,7 +25,7 @@ struct private_flacdec_data {
         * We can not consume directly what was copied by the read callback
         * because we might need to feed unconsumend bytes to the decoder again
         * after the read callback ran out of data and returned ABORT. So we
-        * track how many bytes are unconsumed so far.
+        * track how many bytes have been fed to libflac but are unconsumed so far.
         */
        size_t unconsumed;
 };
@@ -144,7 +144,7 @@ static FLAC__StreamDecoderWriteStatus write_cb(
                        write_int16_host_endian(outbuffer + 4 * k + 2, right);
                }
        }
-       btr_add_output(outbuffer, n * 4, btrn);
+       btr_add_output(outbuffer, n * channels * 2, btrn);
        flac_consume(fn);
        return FLAC__STREAM_DECODER_WRITE_STATUS_CONTINUE;
 }
@@ -216,15 +216,16 @@ static void flacdec_pre_select(struct sched *s, struct task *t)
                return sched_min_delay(s);
 }
 
-static void flacdec_post_select(__a_unused struct sched *s, struct task *t)
+static int flacdec_post_select(__a_unused struct sched *s, struct task *t)
 {
        struct filter_node *fn = container_of(t, struct filter_node, task);
        struct private_flacdec_data *pfd = fn->private_data;
        struct btr_node *btrn = fn->btrn;
        int ret;
+       FLAC__StreamDecoderState state;
 
        if (output_queue_full(btrn))
-               return;
+               return 0;
        ret = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL);
        if (ret < 0 && ret != -E_BTR_EOF) /* fatal error */
                goto out;
@@ -234,40 +235,44 @@ static void flacdec_post_select(__a_unused struct sched *s, struct task *t)
                ret = flacdec_init(fn);
                goto out;
        }
-       pfd->unconsumed = 0;
-       for (;;) {
-               if (output_queue_full(btrn)) {
-                       pfd->have_more = true;
-                       break;
-               }
-               pfd->have_more = false;
-               FLAC__StreamDecoderState state;
-               FLAC__stream_decoder_process_single(pfd->decoder);
-               state = FLAC__stream_decoder_get_state(pfd->decoder);
-               //PARA_CRIT_LOG("state: %s\n", FLAC__stream_decoder_get_resolved_state_string(pfd->decoder));
-               ret = -E_FLACDEC_EOF;
-               if (state == FLAC__STREAM_DECODER_END_OF_STREAM)
-                       goto out;
-               if (state == FLAC__STREAM_DECODER_ABORTED) {
-                       FLAC__stream_decoder_flush(pfd->decoder);
-                       fn->min_iqs = pfd->unconsumed + 1;
-                       break;
-               }
-               fn->min_iqs = 0;
+       if (output_queue_full(btrn)) {
+               pfd->have_more = true;
+               ret = 1;
+               goto out;
+       }
+       pfd->have_more = false;
+       FLAC__stream_decoder_process_single(pfd->decoder);
+       state = FLAC__stream_decoder_get_state(pfd->decoder);
+       ret = -E_FLACDEC_EOF;
+       if (state == FLAC__STREAM_DECODER_END_OF_STREAM)
+               goto out;
+       if (state == FLAC__STREAM_DECODER_ABORTED) {
+               FLAC__stream_decoder_flush(pfd->decoder);
+               fn->min_iqs = pfd->unconsumed + 1;
+               ret = 1;
+               goto out;
        }
+       fn->min_iqs = 0;
        ret = 1;
 out:
-       t->error = ret;
        if (ret < 0)
-               btr_remove_node(btrn);
+               btr_remove_node(&fn->btrn);
+       return ret;
 }
 
 static void flacdec_close(struct filter_node *fn)
 {
-       struct private_flacdec_data *pfd = fn->private_data;
+       struct private_flacdec_data *pfd;
 
-       FLAC__stream_decoder_finish(pfd->decoder);
-       FLAC__stream_decoder_delete(pfd->decoder);
+       if (!fn)
+               return;
+       pfd = fn->private_data;
+       if (!pfd)
+               return;
+       if (pfd->decoder) {
+               FLAC__stream_decoder_finish(pfd->decoder);
+               FLAC__stream_decoder_delete(pfd->decoder);
+       }
        free(pfd);
        fn->private_data = NULL;
 }