Submit parts of FS#12189 regarding codec API. Replaces access to global settings with a dedicated function to determine if the current track shall be looped. Used by several synthesizer codecs.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30391 a1c6a512-1295-4272-9138-f99709370657

apps/codec_thread.c

@@ -30,6 +30,7 @@
 #include "buffering.h"
 #include "dsp.h"
 #include "metadata.h"
+#include "settings.h"
 
 /* Define LOGF_ENABLE to enable logf output in this file */
 /*#define LOGF_ENABLE*/
@@ -405,6 +406,11 @@ static enum codec_command_action
     }
 }
 
+static bool codec_loop_track_callback(void)
+{
+    return global_settings.repeat_mode == REPEAT_ONE;
+}
+
 /* Initialize codec API */
 void codec_init_codec_api(void)
 {
@@ -421,6 +427,7 @@ void codec_init_codec_api(void)
     ci.set_offset          = audio_codec_update_offset;
     ci.configure           = codec_configure_callback;
     ci.get_command         = codec_get_command_callback;
+    ci.loop_track          = codec_loop_track_callback;
 }
 
 

apps/codecs.c

@@ -50,6 +50,7 @@
 #include "sound.h"
 #include "splash.h"
 #include "general.h"
+#include "rbpaths.h"
 
 #define LOGF_ENABLE
 #include "logf.h"
@@ -97,6 +98,7 @@ struct codec_api ci = {
     NULL, /* set_offset */
     NULL, /* configure */
     NULL, /* get_command */
+    NULL, /* loop_track */
     
     /* kernel/ system */
 #if defined(CPU_ARM) && CONFIG_PLATFORM & PLATFORM_NATIVE
@@ -127,7 +129,6 @@ struct codec_api ci = {
     memmove,
     memcmp,
     memchr,
-    strcasestr,
 #if defined(DEBUG) || defined(SIMULATOR)
     debugf,
 #endif
@@ -136,7 +137,6 @@ struct codec_api ci = {
 #endif
 
     (qsort_func)qsort,
-    &global_settings,
 
 #ifdef RB_PROFILE
     profile_thread,

apps/codecs.h

@@ -44,7 +44,6 @@
 #endif
 #include "dsp.h"
 #endif
-#include "settings.h"
 
 #include "gcc_extensions.h"
 #include "load_code.h"
@@ -75,12 +74,12 @@
 #define CODEC_ENC_MAGIC 0x52454E43 /* RENC */
 
 /* increase this every time the api struct changes */
-#define CODEC_API_VERSION 42
+#define CODEC_API_VERSION 43
 
 /* update this to latest version if a change to the api struct breaks
    backwards compatibility (and please take the opportunity to sort in any
    new function which are "waiting" at the end of the function table) */
-#define CODEC_MIN_API_VERSION 42
+#define CODEC_MIN_API_VERSION 43
 
 /* reasons for calling codec main entrypoint */
 enum codec_entry_call_reason {
@@ -145,6 +144,8 @@ struct codec_api {
     void (*configure)(int setting, intptr_t value);
     /* Obtain command action on what to do next */
     enum codec_command_action (*get_command)(intptr_t *param);
+    /* Determine whether the track should be looped, if applicable. */
+    bool (*loop_track)(void);
 
     /* kernel/ system */
 #if defined(CPU_ARM) && CONFIG_PLATFORM & PLATFORM_NATIVE
@@ -180,7 +181,6 @@ struct codec_api {
     void* (*memmove)(void *out, const void *in, size_t n);
     int (*memcmp)(const void *s1, const void *s2, size_t n);
     void *(*memchr)(const void *s1, int c, size_t n);
-    char *(*strcasestr) (const char* phaystack, const char* pneedle);
 
 #if defined(DEBUG) || defined(SIMULATOR)
     void (*debugf)(const char *fmt, ...) ATTRIBUTE_PRINTF(1, 2);
@@ -193,9 +193,6 @@ struct codec_api {
     void (*qsort)(void *base, size_t nmemb, size_t size,
                   int(*compar)(const void *, const void *));
 
-    /* The ADX codec accesses global_settings to test for REPEAT_ONE mode */
-    struct user_settings* global_settings;
-
 #ifdef RB_PROFILE
     void (*profile_thread)(void);
     void (*profstop)(void);

apps/codecs/adx.c

@@ -239,7 +239,7 @@ enum codec_status codec_run(void)
         if (bufoff > end_adr-18*channels && looping) {
             DEBUGF("ADX: loop!\n");
             /* check for endless looping */
-            if (ci->global_settings->repeat_mode==REPEAT_ONE) {
+            if (ci->loop_track()) {
                 loop_count=0;
                 fade_count = -1; /* disable fade */
             } else {

apps/codecs/ay.c

@@ -17,8 +17,8 @@ static struct Ay_Emu ay_emu;
 static void set_codec_track(int t, int multitrack) {
     Ay_start_track(&ay_emu, t); 
 
-    /* for REPEAT_ONE we disable track limits */
+    /* for loop mode we disable track limits */
-    if (ci->global_settings->repeat_mode != REPEAT_ONE) {
+    if (!ci->loop_track()) {
         Track_set_fade(&ay_emu, Track_get_length( &ay_emu, t ) - 4000, 4000);
     }
     if (multitrack) ci->set_elapsed(t*1000); /* t is track no to display */
@@ -111,7 +111,7 @@ next_track:
             ci->seek_complete();
             
             /* Set fade again */
-            if (ci->global_settings->repeat_mode != REPEAT_ONE) {
+            if (!ci->loop_track()) {
                 Track_set_fade(&ay_emu, Track_get_length( &ay_emu, track ) - 4000, 4000);
             }
         }

apps/codecs/gbs.c

@@ -17,8 +17,8 @@ static struct Gbs_Emu gbs_emu;
 static void set_codec_track(int t) {
     Gbs_start_track(&gbs_emu, t); 
 
-    /* for REPEAT_ONE we disable track limits */
+    /* for loop mode we disable track limits */
-    if (ci->global_settings->repeat_mode != REPEAT_ONE) {
+    if (!ci->loop_track()) {
         Track_set_fade(&gbs_emu, Track_get_length( &gbs_emu, t ), 4000);
     }
     ci->set_elapsed(t*1000); /* t is track no to display */

apps/codecs/hes.c

@@ -17,8 +17,8 @@ static struct Hes_Emu hes_emu;
 static void set_codec_track(int t) {
     Hes_start_track(&hes_emu, t); 
 
-    /* for REPEAT_ONE we disable track limits */
+    /* for loop mode we disable track limits */
-    if (ci->global_settings->repeat_mode != REPEAT_ONE) {
+    if (!ci->loop_track()) {
         Track_set_fade(&hes_emu, Track_get_length( &hes_emu, t ), 4000);
     }
     ci->set_elapsed(t*1000); /* t is track no to display */

apps/codecs/kss.c

@@ -18,7 +18,7 @@ static void set_codec_track(int t) {
     Kss_start_track(&kss_emu, t); 
 
     /* for REPEAT_ONE we disable track limits */
-    if (ci->global_settings->repeat_mode != REPEAT_ONE) {
+    if (!ci->loop_track()) {
         Track_set_fade(&kss_emu, Track_get_length( &kss_emu, t ), 4000);
     }
     ci->set_elapsed(t*1000); /* t is track no to display */

apps/codecs/nsf.c

@@ -20,7 +20,7 @@ static void set_codec_track(int t, int multitrack) {
     Nsf_start_track(&nsf_emu, t); 
 
     /* for REPEAT_ONE we disable track limits */
-    if (ci->global_settings->repeat_mode != REPEAT_ONE) {
+    if (!ci->loop_track()) {
         Track_set_fade(&nsf_emu, Track_length( &nsf_emu, t ) - 4000, 4000);
     }
     if (multitrack) ci->set_elapsed(t*1000); /* t is track no to display */
@@ -109,7 +109,7 @@ next_track:
             ci->seek_complete();
             
             /* Set fade again */
-            if (ci->global_settings->repeat_mode != REPEAT_ONE) {
+            if (!ci->loop_track()) {
                 Track_set_fade(&nsf_emu, Track_length( &nsf_emu, track ), 4000);
             }
         }

apps/codecs/sgc.c

@@ -23,7 +23,7 @@ static void set_codec_track(int t) {
     Sgc_start_track(&sgc_emu, t); 
 
     /* for REPEAT_ONE we disable track limits */
-    if (ci->global_settings->repeat_mode != REPEAT_ONE) {
+    if (!ci->loop_track()) {
         Track_set_fade(&sgc_emu, Track_get_length( &sgc_emu, t ), 4000);
     }
     ci->set_elapsed(t*1000); /* t is track no to display */

apps/codecs/spc.c

@@ -477,7 +477,7 @@ static int play_track( void )
         sampleswritten += WAV_CHUNK_SIZE;
 
         /* is track timed? */
-        if (ci->global_settings->repeat_mode!=REPEAT_ONE && ci->id3->length) {
+        if (!ci->loop_track() && ci->id3->length) {
             unsigned long curtime = sampleswritten*1000LL/SAMPLE_RATE;
             unsigned long lasttimesample = (sampleswritten-WAV_CHUNK_SIZE);
 
@@ -513,10 +513,10 @@ static int play_track( void )
 
         spc_play_send_samples(samples);
 
-        if (ci->global_settings->repeat_mode!=REPEAT_ONE)
+        if (ci->loop_track())
-            ci->set_elapsed(sampleswritten*1000LL/SAMPLE_RATE);
-        else
             ci->set_elapsed(0);
+        else
+            ci->set_elapsed(sampleswritten*1000LL/SAMPLE_RATE);
     }
     
     EXIT_TIMER(total);
@@ -571,7 +571,7 @@ enum codec_status codec_run(void)
 
         LoadID666(buffer+0x2e);
 
-        if (ci->global_settings->repeat_mode!=REPEAT_ONE && ID666.length==0) {
+        if (!ci->loop_track() && ID666.length==0) {
             ID666.length=3*60*1000; /* 3 minutes */
             ID666.fade=5*1000; /* 5 seconds */
         }

apps/codecs/vgm.c

@@ -105,7 +105,7 @@ enum codec_status codec_run(void)
     Vgm_start_track(&vgm_emu); 
 
     /* for REPEAT_ONE we disable track limits */
-    if (ci->global_settings->repeat_mode != REPEAT_ONE) {
+    if (!ci->loop_track()) {
         Track_set_fade(&vgm_emu, ci->id3->length - 4000, 4000);
     }
     

apps/plugins/test_codec.c

@@ -505,6 +505,12 @@ static enum codec_command_action get_command(intptr_t *param)
     (void)param;
 }
 
+/* Some codecs call this to determine whether they should loop. */
+static bool loop_track(void)
+{
+    return false;
+}
+
 static void set_offset(size_t value)
 {
     ci.id3->offset = value;
@@ -561,6 +567,7 @@ static void init_ci(void)
     ci.set_offset = set_offset;
     ci.configure = configure;
     ci.get_command = get_command;
+    ci.loop_track = loop_track;
 
     /* --- "Core" functions --- */
 
@@ -578,7 +585,6 @@ static void init_ci(void)
     ci.memmove = rb->memmove;
     ci.memcmp = rb->memcmp;
     ci.memchr = rb->memchr;
-    ci.strcasestr = rb->strcasestr;
 #if defined(DEBUG) || defined(SIMULATOR)
     ci.debugf = rb->debugf;
 #endif
@@ -587,7 +593,6 @@ static void init_ci(void)
 #endif
 
     ci.qsort = rb->qsort;
-    ci.global_settings = rb->global_settings;
 
 #ifdef RB_PROFILE
     ci.profile_thread = rb->profile_thread;