From e91ebdac97592ce5e86ef22e0a2e55d0fbea3703 Mon Sep 17 00:00:00 2001
From: Themaister <maister@archlinux.us>
Date: Sat, 15 Oct 2011 16:16:13 +0200
Subject: [PATCH] Do not recalculate ratio all the time.

---
 driver.c  |  3 +++
 general.h |  2 ++
 ssnes.c   | 10 +++++-----
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/driver.c b/driver.c
index 7dec8de264..ba089026db 100644
--- a/driver.c
+++ b/driver.c
@@ -270,6 +270,9 @@ void init_audio(void)
    assert((g_extern.audio_data.rewind_buf = malloc(max_bufsamples * sizeof(int16_t))));
    g_extern.audio_data.rewind_size = max_bufsamples;
 
+   g_extern.audio_data.src_ratio =
+      (double)g_settings.audio.out_rate / g_settings.audio.in_rate;
+
    init_dsp_plugin();
 }
 
diff --git a/general.h b/general.h
index 9c7ae643d7..1dd230ad51 100644
--- a/general.h
+++ b/general.h
@@ -213,6 +213,8 @@ struct global
       size_t nonblock_chunk_size;
       size_t block_chunk_size;
 
+      double src_ratio;
+
       bool use_float;
 
       float *outsamples;
diff --git a/ssnes.c b/ssnes.c
index 5280504b6f..39e345514c 100644
--- a/ssnes.c
+++ b/ssnes.c
@@ -220,13 +220,10 @@ static bool audio_flush(const int16_t *data, unsigned samples)
       .data_in = dsp_output.samples ? dsp_output.samples : g_extern.audio_data.data,
       .data_out = g_extern.audio_data.outsamples,
       .input_frames = dsp_output.samples ? dsp_output.frames : (samples / 2),
-      .output_frames = g_extern.audio_data.chunk_size * 8,
-      .ratio = (double)g_settings.audio.out_rate / (double)g_settings.audio.in_rate,
+      .ratio = g_extern.audio_data.src_ratio,
+      .output_frames = samples * g_extern.audio_data.src_ratio,
    };
 
-   if (g_extern.frame_is_reverse)
-      src_data.output_frames = (samples) * src_data.ratio;
-
    if (dsp_output.should_resample)
    {
       hermite_process(g_extern.audio_data.source, &src_data);
@@ -1338,6 +1335,9 @@ static void check_input_rate(void)
       msg_queue_clear(g_extern.msg_queue);
       msg_queue_push(g_extern.msg_queue, msg, 0, 180);
       SSNES_LOG("%s\n", msg);
+
+      g_extern.audio_data.src_ratio =
+         (double)g_settings.audio.out_rate / g_settings.audio.in_rate;
    }
 }