remove align_buffer from firmare/general.c, replacing with ALIGN_BUFFER macro, and replace all uses of it (only resize.c in core, and pictureflow and mpegplayer plugins), remove it from plugin_api,

and remove wrapper for it from plugin.h


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19758 a1c6a512-1295-4272-9138-f99709370657

apps/plugin.c

@@ -308,7 +308,6 @@ static const struct plugin_api rockbox_api = {
     mutex_init,
     mutex_lock,
     mutex_unlock,
-    align_buffer,
 #endif
 
     reset_poweroff_timer,

apps/plugin.h

@@ -126,12 +126,12 @@ void* plugin_get_buffer(size_t *buffer_size);
 #define PLUGIN_MAGIC 0x526F634B /* RocK */
 
 /* increase this every time the api struct changes */
-#define PLUGIN_API_VERSION 135
+#define PLUGIN_API_VERSION 136
 
 /* 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 PLUGIN_MIN_API_VERSION 135
+#define PLUGIN_MIN_API_VERSION 136
 
 /* plugin return codes */
 enum plugin_status {
@@ -419,7 +419,6 @@ struct plugin_api {
     void (*mutex_init)(struct mutex *m);
     void (*mutex_lock)(struct mutex *m);
     void (*mutex_unlock)(struct mutex *m);
-    size_t (*align_buffer)(void **start, size_t size, size_t align);
 #endif
 
     void (*reset_poweroff_timer)(void);
@@ -884,13 +883,5 @@ enum plugin_status plugin_start(const struct plugin_api* rockbox, const void* pa
 
 #endif /* CACHE_FUNCTION_WRAPPERS */
 
-#ifndef ALIGN_BUFFER_WRAPPER
-#define ALIGN_BUFFER_WRAPPER(api) \
-        size_t align_buffer(void **start, size_t size, size_t align) \
-        { \
-            return (api)->align_buffer(start, size, align); \
-        }
-#endif /* ALIGN_BUFFER_WRAPPER */
-
 #endif /* __PCTOOL__ */
 #endif

apps/plugins/lib/wrappers.h

@@ -36,9 +36,6 @@
 #define cpu_boost rb->cpu_boost
 #endif
 #define yield rb->yield
-#if CONFIG_CODEC == SWCODEC
-#define align_buffer rb->align_buffer
-#endif
 
 #endif
 

apps/plugins/mpegplayer/alloc.c

@@ -27,6 +27,7 @@
 
 #include "plugin.h"
 #include "mpegplayer.h"
+#include <system.h>
 
 /* Main allocator */
 static off_t mem_ptr;
@@ -132,8 +133,8 @@ bool mpeg_alloc_init(unsigned char *buf, size_t mallocsize)
     mem_ptr = 0;
     /* Cache-align buffer or 4-byte align */
     mallocbuf = buf;
-    bufsize = align_buffer(PUN_PTR(void **, &mallocbuf),
+    bufsize = mallocsize;
-                           mallocsize, CACHEALIGN_UP(4));
+    ALIGN_BUFFER(mallocbuf, bufsize, CACHEALIGN_UP(4));
 
     /* Separate allocator for video */
     mpeg2_mem_ptr = 0;

apps/plugins/mpegplayer/disk_buf.c

@@ -22,6 +22,7 @@
  ****************************************************************************/
 #include "plugin.h"
 #include "mpegplayer.h"
+#include <system.h>
 
 static struct mutex disk_buf_mtx SHAREDBSS_ATTR;
 static struct event_queue disk_buf_queue SHAREDBSS_ATTR;
@@ -859,7 +860,7 @@ bool disk_buf_init(void)
         return false;
 
 #ifdef PROC_NEEDS_CACHEALIGN
-    disk_buf.size = CACHEALIGN_BUFFER(&disk_buf.start, disk_buf.size);
+    CACHEALIGN_BUFFER(disk_buf.start, disk_buf.size);
     disk_buf.start = UNCACHED_ADDR(disk_buf.start);
 #endif
     disk_buf.size -= DISK_GUARDBUF_SIZE;

apps/plugins/mpegplayer/mpegplayer.c

@@ -283,7 +283,6 @@ CONFIG_KEYPAD == SANSA_M200_PAD
 const struct plugin_api* rb;
 
 CACHE_FUNCTION_WRAPPERS(rb);
-ALIGN_BUFFER_WRAPPER(rb);
 
 /* One thing we can do here for targets with remotes is having a display
  * always on the remote instead of always forcing a popup on the main display */

apps/plugins/pictureflow.c

@@ -2144,8 +2144,7 @@ enum plugin_status plugin_start(const struct plugin_api *api,
     rb->cpu_boost(true);
 #endif
     plugin_buf = rb->plugin_get_buffer(&plugin_buf_size);
-    plugin_buf_size = rb->align_buffer(PUN_PTR(void**,&plugin_buf),
+    ALIGN_BUFFER(plugin_buf, plugin_buf_size, 4);
-                                       plugin_buf_size, 4);
     ret = main();
 #ifdef HAVE_ADJUSTABLE_CPU_FREQ
     rb->cpu_boost(false);

apps/recorder/resize.c

@@ -31,6 +31,7 @@
  *
  ****************************************************************************/
 
+#include <system.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -616,10 +617,7 @@ int resize_on_load(struct bitmap *bm, bool dither, struct dim *src,
     uint8_t sc_buf[(needed <= len  || needed > MAX_SC_STACK_ALLOC) ?
                    0 : needed];
 #endif
-#if CONFIG_CODEC == SWCODEC
+    ALIGN_BUFFER(buf, len, sizeof(uint32_t));
-    len = (unsigned int)align_buffer(PUN_PTR(void**, &buf), len,
-                                         sizeof(uint32_t));
-#endif
     if (needed > len)
     {
 #if MAX_SC_STACK_ALLOC

docs/PLUGIN_API.new

@@ -39,15 +39,6 @@ bool action_userabort(int timeout)
     \return
     \description
 
-size_t align_buffer(void **start, size_t size, size_t align)
-    \group kernel/ system
-    \conditions (CONFIG_CODEC == SWCODEC)
-    \param start
-    \param size
-    \param align
-    \return
-    \description
-
 const char *appsversion
     \return version of the plugin API
     \description

firmware/export/general.h

@@ -37,6 +37,4 @@ int make_list_from_caps32(unsigned long src_mask,
                           unsigned long caps_mask,
                           unsigned long *caps_list);
 
-size_t align_buffer(void **start, size_t size, size_t align);
-
 #endif /* GENERAL_H */

firmware/export/system.h

@@ -110,6 +110,17 @@ int get_cpu_boost_counter(void);
 #define ALIGN_DOWN(n, a)     ((n)/(a)*(a))
 #define ALIGN_UP(n, a)       ALIGN_DOWN((n)+((a)-1),a)
 
+/* align start and end of buffer to nearest integer multiple of a */
+#define ALIGN_BUFFER(ptr,len,align) \
+{\
+    uintptr_t tmp_ptr1 = (uintptr_t)ptr; \
+    uintptr_t tmp_ptr2 = tmp_ptr1 + len;\
+    tmp_ptr1 = ALIGN_UP(tmp_ptr1,align); \
+    tmp_ptr2 = ALIGN_DOWN(tmp_ptr2,align); \
+    len = tmp_ptr2 - tmp_ptr1; \
+    ptr = (typeof(ptr))tmp_ptr1; \
+}
+
 /* live endianness conversion */
 #ifdef ROCKBOX_LITTLE_ENDIAN
 #define letoh16(x) (x)
@@ -275,7 +286,7 @@ static inline uint32_t swap_odd_even32(uint32_t value)
     __attribute__((aligned(CACHEALIGN_UP(x))))
 /* Aligns a buffer pointer and size to proper boundaries */
 #define CACHEALIGN_BUFFER(start, size) \
-    ({ align_buffer(PUN_PTR(void **, (start)), (size), CACHEALIGN_SIZE); })
+    ALIGN_BUFFER((start), (size), CACHEALIGN_SIZE)
 
 #else /* ndef PROC_NEEDS_CACHEALIGN */
 
@@ -286,8 +297,7 @@ static inline uint32_t swap_odd_even32(uint32_t value)
 #define CACHEALIGN_UP(x) (x)
 #define CACHEALIGN_DOWN(x) (x)
 /* Make no adjustments */
-#define CACHEALIGN_BUFFER(start, size) \
+#define CACHEALIGN_BUFFER(start, size)
-    ({ (void)(start); (size); })
 
 #endif /* PROC_NEEDS_CACHEALIGN */
 

firmware/general.c

@@ -78,23 +78,3 @@ int make_list_from_caps32(unsigned long src_mask,
 
     return count;
 } /* make_list_from_caps32 */
-
-/* Align a buffer and size to a size boundary while remaining within
- * the original boundaries */
-size_t align_buffer(void **start, size_t size, size_t align)
-{
-    void *newstart = *start;
-    void *newend = newstart + size;
-
-    /* Align the end down and the start up */
-    newend = (void *)ALIGN_DOWN((intptr_t)newend, align);
-    newstart = (void *)ALIGN_UP((intptr_t)newstart, align);
-
-    /* Hmmm - too small for this */
-    if (newend <= newstart)
-        return 0;
-
-    /* Return adjusted pointer and size */
-    *start = newstart;
-    return newend - newstart;
-}