well that does not need to be there anymore

[ffmpeg] / libavcodec / utils.c

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index d08c63031775779027bc8bd66743fb2784a84102..c8bdd80010ea9072a9a759193c84206df2e75fa0 100644 (file)
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -141,6 +141,7 @@ void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
     switch(s->pix_fmt){
     case PIX_FMT_YUV420P:
     case PIX_FMT_YUV422:
+    case PIX_FMT_UYVY422:
     case PIX_FMT_YUV422P:
     case PIX_FMT_YUV444P:
     case PIX_FMT_GRAY8:
@@ -159,6 +160,16 @@ void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
             w_align=64;
             h_align=64;
         }
+    case PIX_FMT_RGB555:
+        if(s->codec_id == CODEC_ID_RPZA){
+            w_align=4;
+            h_align=4;
+        }
+    case PIX_FMT_PAL8:
+        if(s->codec_id == CODEC_ID_SMC){
+            w_align=4;
+            h_align=4;
+        }
         break;
     default:
         w_align= 1;
@@ -208,6 +219,7 @@ int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
         case PIX_FMT_RGB555:
         case PIX_FMT_RGB565:
         case PIX_FMT_YUV422:
+        case PIX_FMT_UYVY422:
             pixel_size=2;
             break;
         case PIX_FMT_RGB24:
@@ -453,24 +465,25 @@ int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
 int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
                          const short *samples)
 {
-    int ret;
-
-    ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
-    avctx->frame_number++;
-    return ret;
+    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
+        int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
+        avctx->frame_number++;
+        return ret;
+    }else
+        return 0;
 }
 
 int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 
                          const AVFrame *pict)
 {
-    int ret;
-
-    ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
+    if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
+        int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
+        avctx->frame_number++;
+        emms_c(); //needed to avoid a emms_c() call before every return;
     
-    emms_c(); //needed to avoid a emms_c() call before every return;
-
-    avctx->frame_number++;
-    return ret;
+        return ret;
+    }else
+        return 0;
 }
 
 /** 
@@ -488,6 +501,7 @@ int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
 {
     int ret;
     
+    *got_picture_ptr= 0;
     ret = avctx->codec->decode(avctx, picture, got_picture_ptr, 
                                buf, buf_size);
 
@@ -508,6 +522,7 @@ int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
 {
     int ret;
 
+    *frame_size_ptr= 0;
     ret = avctx->codec->decode(avctx, samples, frame_size_ptr, 
                                buf, buf_size);
     avctx->frame_number++;
@@ -572,7 +587,7 @@ AVCodec *avcodec_find_decoder_by_name(const char *name)
     return NULL;
 }
 
-AVCodec *avcodec_find(enum CodecID id)
+static AVCodec *avcodec_find(enum CodecID id)
 {
     AVCodec *p;
     p = first_avcodec;
@@ -773,49 +788,36 @@ char av_get_pict_type_char(int pict_type){
 }
 
 int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max){
-    int exact=1, sign=0;
-    int64_t gcd;
-
-    assert(den != 0);
-
-    if(den < 0)
-        return av_reduce(dst_nom, dst_den, -nom, -den, max);
-    
-    sign= nom < 0;
-    nom= ABS(nom);
-    
-    gcd = ff_gcd(nom, den);
-    nom /= gcd;
-    den /= gcd;
-    
-    if(nom > max || den > max){
-        AVRational a0={0,1}, a1={1,0};
-        exact=0;
-
-        for(;;){
-            int64_t x= nom / den;
-            int64_t a2n= x*a1.num + a0.num;
-            int64_t a2d= x*a1.den + a0.den;
-
-            if(a2n > max || a2d > max) break;
-
-            nom %= den;
-        
-            a0= a1;
-            a1= (AVRational){a2n, a2d};
-            if(nom==0) break;
-            x= nom; nom=den; den=x;
-        }
-        nom= a1.num;
-        den= a1.den;
+    AVRational a0={0,1}, a1={1,0};
+    int sign= (nom<0) ^ (den<0);
+    int64_t gcd= ff_gcd(ABS(nom), ABS(den));
+
+    nom = ABS(nom)/gcd;
+    den = ABS(den)/gcd;
+    if(nom<=max && den<=max){
+        a1= (AVRational){nom, den};
+        den=0;
     }
     
-    assert(ff_gcd(nom, den) == 1);
+    while(den){
+        int64_t x       = nom / den;
+        int64_t next_den= nom - den*x;
+        int64_t a2n= x*a1.num + a0.num;
+        int64_t a2d= x*a1.den + a0.den;
+
+        if(a2n > max || a2d > max) break;
+
+        a0= a1;
+        a1= (AVRational){a2n, a2d};
+        nom= den;
+        den= next_den;
+    }
+    assert(ff_gcd(a1.num, a1.den) == 1);
     
-    *dst_nom = sign ? -nom : nom;
-    *dst_den = den;
+    *dst_nom = sign ? -a1.num : a1.num;
+    *dst_den = a1.den;
     
-    return exact;
+    return den==0;
 }
 
 int64_t av_rescale(int64_t a, int64_t b, int64_t c){
@@ -890,3 +892,8 @@ void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
     av_log_callback = callback;
 }
 
+#if !defined(HAVE_PTHREADS) && !defined(HAVE_W32THREADS)
+int avcodec_thread_init(AVCodecContext *s, int thread_count){
+    return -1;
+}
+#endif