1 files changed, 387 insertions, 0 deletions

diff --git a/apps/codecs/libwma/common.h b/apps/codecs/libwma/common.h
new file mode 100644
index 0000000000..dc55dcaed2
--- /dev/null
+++ b/apps/codecs/libwma/common.h
@@ -0,0 +1,387 @@
+/**
+ * @file common.h
+ * common internal api header.
+ */
+
+#ifndef COMMON_H
+#define COMMON_H
+
+/* only include the following when compiling package */
+#include "ffmpeg_config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <math.h>
+#include <stddef.h>
+#include <inttypes.h>
+
+#ifndef M_PI
+#define M_PI    3.14159265358979323846
+#endif
+
+#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
+#    define always_inline __attribute__((always_inline)) inline
+#else
+#    define always_inline inline
+#endif
+
+#ifndef INT64_MAX
+#define INT64_MAX 9223372036854775807LL
+#endif
+
+#    if defined(__MINGW32__) || defined(__CYGWIN__) || \
+        defined(__OS2__) || (defined (__OpenBSD__) && !defined(__ELF__))
+#        define MANGLE(a) "_" #a
+#    else
+#        define MANGLE(a) #a
+#    endif
+
+/* debug stuff */
+
+#    ifndef DEBUG
+#        define NDEBUG
+#    endif
+#    include <assert.h>
+
+/* dprintf macros */
+#    if defined(CONFIG_WIN32) && !defined(__MINGW32__)
+
+inline void dprintf(const char* fmt,...) {}
+
+#    else
+
+#        ifdef DEBUG
+#            define dprintf(fmt,...) printf(fmt, __VA_ARGS__)
+#        else
+#            define dprintf(fmt,...)
+#        endif
+
+#    endif /* !CONFIG_WIN32 */
+
+#    define av_abort()      do { av_log(AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
+
+//rounded divison & shift
+#define RSHIFT(a,b) ((a) > 0 ? ((a) + (1<<((b)-1)))>>(b) : ((a) + (1<<((b)-1))-1)>>(b))
+/* assume b>0 */
+#define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
+
+extern const uint32_t inverse[256];
+
+#define NEG_SSR32(a,s) ((( int32_t)(a))>>(32-(s)))
+#define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s)))
+
+/* bit input */
+
+typedef struct GetBitContext {
+    const uint8_t *buffer, *buffer_end;
+    int index;
+    int size_in_bits;
+} GetBitContext;
+
+static inline int get_bits_count(GetBitContext *s);
+
+/* used to avoid missaligned exceptions on some archs (alpha, ...) */
+static inline uint32_t unaligned32(const void *v) {
+    struct Unaligned {
+        uint32_t i;
+    } __attribute__((packed));
+
+    return ((const struct Unaligned *) v)->i;
+}
+
+
+/* Bitstream reader API docs:
+name
+    abritary name which is used as prefix for the internal variables
+
+gb
+    getbitcontext
+
+OPEN_READER(name, gb)
+    loads gb into local variables
+
+CLOSE_READER(name, gb)
+    stores local vars in gb
+
+UPDATE_CACHE(name, gb)
+    refills the internal cache from the bitstream
+    after this call at least MIN_CACHE_BITS will be available,
+
+GET_CACHE(name, gb)
+    will output the contents of the internal cache, next bit is MSB of 32 or 64 bit (FIXME 64bit)
+
+SHOW_UBITS(name, gb, num)
+    will return the nest num bits
+
+SHOW_SBITS(name, gb, num)
+    will return the nest num bits and do sign extension
+
+SKIP_BITS(name, gb, num)
+    will skip over the next num bits
+    note, this is equinvalent to SKIP_CACHE; SKIP_COUNTER
+
+SKIP_CACHE(name, gb, num)
+    will remove the next num bits from the cache (note SKIP_COUNTER MUST be called before UPDATE_CACHE / CLOSE_READER)
+
+SKIP_COUNTER(name, gb, num)
+    will increment the internal bit counter (see SKIP_CACHE & SKIP_BITS)
+
+LAST_SKIP_CACHE(name, gb, num)
+    will remove the next num bits from the cache if it is needed for UPDATE_CACHE otherwise it will do nothing
+
+LAST_SKIP_BITS(name, gb, num)
+    is equinvalent to SKIP_LAST_CACHE; SKIP_COUNTER
+
+for examples see get_bits, show_bits, skip_bits, get_vlc
+*/
+
+static inline int unaligned32_be(const void *v)
+{
+#ifdef CONFIG_ALIGN
+        const uint8_t *p=v;
+        return (((p[0]<<8) | p[1])<<16) | (p[2]<<8) | (p[3]);
+#else
+        return be2me_32( unaligned32(v)); //original
+#endif
+}
+
+#define MIN_CACHE_BITS 25
+
+#define OPEN_READER(name, gb)\
+        int name##_index= (gb)->index;\
+        int name##_cache= 0;\
+
+#define CLOSE_READER(name, gb)\
+        (gb)->index= name##_index;\
+
+#define UPDATE_CACHE(name, gb)\
+        name##_cache= unaligned32_be( ((uint8_t *)(gb)->buffer)+(name##_index>>3) ) << (name##_index&0x07);\
+
+#define SKIP_CACHE(name, gb, num)\
+        name##_cache <<= (num);\
+
+// FIXME name?
+#define SKIP_COUNTER(name, gb, num)\
+        name##_index += (num);\
+
+#define SKIP_BITS(name, gb, num)\
+        {\
+            SKIP_CACHE(name, gb, num)\
+            SKIP_COUNTER(name, gb, num)\
+        }\
+
+#define LAST_SKIP_BITS(name, gb, num) SKIP_COUNTER(name, gb, num)
+#define LAST_SKIP_CACHE(name, gb, num) ;
+
+#define SHOW_UBITS(name, gb, num)\
+        NEG_USR32(name##_cache, num)
+
+#define SHOW_SBITS(name, gb, num)\
+        NEG_SSR32(name##_cache, num)
+
+#define GET_CACHE(name, gb)\
+        ((uint32_t)name##_cache)
+
+static inline int get_bits_count(GetBitContext *s){
+    return s->index;
+}
+
+/**
+ * reads 0-17 bits.
+ * Note, the alt bitstream reader can read upto 25 bits, but the libmpeg2 reader cant
+ */
+static inline unsigned int get_bits(GetBitContext *s, int n){
+    register int tmp;
+    OPEN_READER(re, s)
+    UPDATE_CACHE(re, s)
+    tmp= SHOW_UBITS(re, s, n);
+    LAST_SKIP_BITS(re, s, n)
+    CLOSE_READER(re, s)
+    return tmp;
+}
+
+unsigned int get_bits_long(GetBitContext *s, int n);
+
+/**
+ * shows 0-17 bits.
+ * Note, the alt bitstream reader can read upto 25 bits, but the libmpeg2 reader cant
+ */
+static inline unsigned int show_bits(GetBitContext *s, int n){
+    register int tmp;
+    OPEN_READER(re, s)
+    UPDATE_CACHE(re, s)
+    tmp= SHOW_UBITS(re, s, n);
+//    CLOSE_READER(re, s)
+    return tmp;
+}
+
+unsigned int show_bits_long(GetBitContext *s, int n);
+
+static inline void skip_bits(GetBitContext *s, int n){
+ //Note gcc seems to optimize this to s->index+=n for the ALT_READER :))
+    OPEN_READER(re, s)
+    UPDATE_CACHE(re, s)
+    LAST_SKIP_BITS(re, s, n)
+    CLOSE_READER(re, s)
+}
+
+static inline unsigned int get_bits1(GetBitContext *s){
+    int index= s->index;
+    uint8_t result= s->buffer[ index>>3 ];
+    result<<= (index&0x07);
+    result>>= 8 - 1;
+    index++;
+    s->index= index;
+
+    return result;
+}
+
+static inline unsigned int show_bits1(GetBitContext *s){
+    return show_bits(s, 1);
+}
+
+static inline void skip_bits1(GetBitContext *s){
+    skip_bits(s, 1);
+}
+
+void init_get_bits(GetBitContext *s,
+                   const uint8_t *buffer, int buffer_size);
+
+int check_marker(GetBitContext *s, const char *msg);
+void align_get_bits(GetBitContext *s);
+
+//#define TRACE
+
+#ifdef TRACE
+
+static inline void print_bin(int bits, int n){
+    int i;
+    
+    for(i=n-1; i>=0; i--){
+        printf("%d", (bits>>i)&1);
+    }
+    for(i=n; i<24; i++)
+        printf(" ");
+}
+
+static inline int get_bits_trace(GetBitContext *s, int n, char *file, char *func, int line){
+    int r= get_bits(s, n);
+    
+    print_bin(r, n);
+    printf("%5d %2d %3d bit @%5d in %s %s:%d\n", r, n, r, get_bits_count(s)-n, file, func, line);
+    return r;
+}
+static inline int get_vlc_trace(GetBitContext *s, VLC_TYPE (*table)[2], int bits, int max_depth, char *file, char *func, int line){
+    int show= show_bits(s, 24);
+    int pos= get_bits_count(s);
+    int r= get_vlc2(s, table, bits, max_depth);
+    int len= get_bits_count(s) - pos;
+    int bits2= show>>(24-len);
+    
+    print_bin(bits2, len);
+    
+    printf("%5d %2d %3d vlc @%5d in %s %s:%d\n", bits2, len, r, pos, file, func, line);
+    return r;
+}
+static inline int get_xbits_trace(GetBitContext *s, int n, char *file, char *func, int line){
+    int show= show_bits(s, n);
+    int r= get_xbits(s, n);
+    
+    print_bin(show, n);
+    printf("%5d %2d %3d xbt @%5d in %s %s:%d\n", show, n, r, get_bits_count(s)-n, file, func, line);
+    return r;
+}
+
+#define get_bits(s, n)  get_bits_trace(s, n, __FILE__, __PRETTY_FUNCTION__, __LINE__)
+#define get_bits1(s)    get_bits_trace(s, 1, __FILE__, __PRETTY_FUNCTION__, __LINE__)
+#define get_xbits(s, n) get_xbits_trace(s, n, __FILE__, __PRETTY_FUNCTION__, __LINE__)
+#define get_vlc(s, vlc)            get_vlc_trace(s, (vlc)->table, (vlc)->bits, 3, __FILE__, __PRETTY_FUNCTION__, __LINE__)
+#define get_vlc2(s, tab, bits, max) get_vlc_trace(s, tab, bits, max, __FILE__, __PRETTY_FUNCTION__, __LINE__)
+
+#define tprintf printf
+
+#else //TRACE
+#define tprintf(_arg...) {}
+#endif
+
+/* define it to include statistics code (useful only for optimizing
+   codec efficiency */
+//#define STATS
+
+#ifdef STATS
+
+enum {
+    ST_UNKNOWN,
+    ST_DC,
+    ST_INTRA_AC,
+    ST_INTER_AC,
+    ST_INTRA_MB,
+    ST_INTER_MB,
+    ST_MV,
+    ST_NB,
+};
+
+extern int st_current_index;
+extern unsigned int st_bit_counts[ST_NB];
+extern unsigned int st_out_bit_counts[ST_NB];
+
+void print_stats(void);
+#endif
+
+/* misc math functions */
+extern const uint8_t ff_log2_tab[256];
+
+static inline int av_log2(unsigned int v)
+{
+    int n;
+
+    n = 0;
+    if (v & 0xffff0000) {
+        v >>= 16;
+        n += 16;
+    }
+    if (v & 0xff00) {
+        v >>= 8;
+        n += 8;
+    }
+    n += ff_log2_tab[v];
+
+    return n;
+}
+
+static inline int clip(int a, int amin, int amax)
+{
+    if (a < amin)
+        return amin;
+    else if (a > amax)
+        return amax;
+    else
+        return a;
+}
+
+/* math */
+extern const uint8_t ff_sqrt_tab[128];
+
+int64_t ff_gcd(int64_t a, int64_t b);
+
+static inline int ff_sqrt(int a)
+{
+    int ret=0;
+    int s;
+    int ret_sq=0;
+    
+    if(a<128) return ff_sqrt_tab[a];
+    
+    for(s=15; s>=0; s--){
+        int b= ret_sq + (1<<(s*2)) + (ret<<s)*2;
+        if(b<=a){
+            ret_sq=b;
+            ret+= 1<<s;
+        }
+    }
+    return ret;
+}
+
+#endif /* COMMON_H */