pcm: Get rid of pcm_play_pause() and associated APIs

Nothing in the core has used it for some time.  It's exported to the
plugin API but the last plugins to use it were switched to the mixer API
back in 2011.

This allows us to get rid of pcm_play_dma_pause() from all audio drivers

Change-Id: Ic3fa02592316f84963e41d792d1cabb436d1ff6b

1 files changed, 1 insertions, 52 deletions

diff --git a/firmware/pcm.c b/firmware/pcm.c
index 640bb7830f..7a7043bef8 100644
--- a/firmware/pcm.c
+++ b/firmware/pcm.c
@@ -47,14 +47,12 @@
  *      pcm_play_dma_postinit
  *      pcm_play_dma_start
  *      pcm_play_dma_stop
- *      pcm_play_dma_pause
  *      pcm_play_dma_get_peak_buffer
  *   Data Read/Written within TSP -
  *      pcm_sampr (R)
  *      pcm_fsel (R)
  *      pcm_curr_sampr (R)
  *      pcm_playing (R)
- *      pcm_paused (R)
  *
  * ==Playback/Recording==
  *   Public -
@@ -93,8 +91,6 @@ volatile pcm_status_callback_type
     pcm_play_status_callback SHAREDBSS_ATTR = NULL;
 /* PCM playback state */
 volatile bool pcm_playing SHAREDBSS_ATTR = false;
-/* PCM paused state. paused implies playing */
-volatile bool pcm_paused SHAREDBSS_ATTR = false;
 /* samplerate of currently playing audio - undefined if stopped */
 unsigned long pcm_curr_sampr SHAREDBSS_ATTR = 0;
 /* samplerate waiting to be set */
@@ -103,7 +99,6 @@ unsigned long pcm_sampr SHAREDBSS_ATTR = HW_SAMPR_DEFAULT;
 int pcm_fsel SHAREDBSS_ATTR = HW_FREQ_DEFAULT;
 
 static void pcm_play_data_start_int(const void *addr, size_t size);
-static void pcm_play_pause_int(bool play);
 void pcm_play_stop_int(void);
 
 #if !defined(HAVE_SW_VOLUME_CONTROL) || defined(PCM_SW_VOLUME_UNBUFFERED)
@@ -118,19 +113,6 @@ static inline void pcm_play_dma_start_int(const void *addr, size_t size)
     pcm_play_dma_start(addr, size);
 }
 
-static inline void pcm_play_dma_pause_int(bool pause)
-{
-    if (pause || pcm_get_bytes_waiting() > 0)
-    {
-        pcm_play_dma_pause(pause);
-    }
-    else
-    {
-        logf(" no data");
-        pcm_play_data_start_int(NULL, 0);
-    }
-}
-
 static inline void pcm_play_dma_stop_int(void)
 {
     pcm_play_dma_stop();
@@ -167,7 +149,6 @@ static void pcm_play_data_start_int(const void *addr, size_t size)
         logf(" pcm_play_dma_start_int");
         pcm_play_dma_start_int(addr, size);
         pcm_playing = true;
-        pcm_paused = false;
     }
     else
     {
@@ -177,22 +158,11 @@ static void pcm_play_data_start_int(const void *addr, size_t size)
     }
 }
 
-static void pcm_play_pause_int(bool play)
-{
-    if (play)
-        pcm_apply_settings();
-
-    logf(" pcm_play_dma_pause_int");
-    pcm_play_dma_pause_int(!play);
-    pcm_paused = !play && pcm_playing;
-}
-
 void pcm_play_stop_int(void)
 {
     pcm_play_dma_stop_int();
     pcm_callback_for_more = NULL;
     pcm_play_status_callback = NULL;
-    pcm_paused = false;
     pcm_playing = false;
 }
 
@@ -282,8 +252,7 @@ void pcm_calculate_peaks(int *left, int *right)
     int count;
     const void *addr = pcm_play_dma_get_peak_buffer_int(&count);
 
-    pcm_do_peak_calculation(&peaks, pcm_playing && !pcm_paused,
-                            addr, count);
+    pcm_do_peak_calculation(&peaks, pcm_playing, addr, count);
 
     if (left)
         *left = peaks.left;
@@ -302,11 +271,6 @@ bool pcm_is_playing(void)
     return pcm_playing;
 }
 
-bool pcm_is_paused(void)
-{
-    return pcm_paused;
-}
-
 /****************************************************************************
  * Functions that do not require targeted implementation but only a targeted
  * interface
@@ -358,21 +322,6 @@ void pcm_play_data(pcm_play_callback_type get_more,
     pcm_play_unlock();
 }
 
-void pcm_play_pause(bool play)
-{
-    logf("pcm_play_pause: %s", play ? "play" : "pause");
-
-    pcm_play_lock();
-
-    if (play == pcm_paused && pcm_playing)
-    {
-        logf(" pcm_play_pause_int");
-        pcm_play_pause_int(play);
-    }
-
-    pcm_play_unlock();
-}
-
 void pcm_play_stop(void)
 {
     logf("pcm_play_stop");