move dct_quantize and denoise_dct function pointers initialization to C

[ffmpeg] / libavcodec / imgresample.c

diff --git a/libavcodec/imgresample.c b/libavcodec/imgresample.c
index 18aec5624fe1721e8c065cb308e62d981b76e93e..8174d38e0149d6ef9273b7a976c6068c786cb888 100644 (file)
--- a/libavcodec/imgresample.c
+++ b/libavcodec/imgresample.c
@@ -28,10 +28,6 @@
 #include "swscale.h"
 #include "dsputil.h"
 
-#ifdef USE_FASTMEMCPY
-#include "libvo/fastmemcpy.h"
-#endif
-
 #define NB_COMPONENTS 3
 
 #define PHASE_BITS 4
@@ -47,6 +43,11 @@
 
 #define LINE_BUF_HEIGHT (NB_TAPS * 4)
 
+struct SwsContext {
+    struct ImgReSampleContext *resampling_ctx;
+    enum PixelFormat src_pix_fmt, dst_pix_fmt;
+};
+
 struct ImgReSampleContext {
     int iwidth, iheight, owidth, oheight;
     int topBand, bottomBand, leftBand, rightBand;
@@ -166,7 +167,7 @@ static void v_resample(uint8_t *dst, int dst_width, const uint8_t *src,
         src_pos += src_incr;\
 }
 
-#define DUMP(reg) movq_r2m(reg, tmp); printf(#reg "=%016Lx\n", tmp.uq);
+#define DUMP(reg) movq_r2m(reg, tmp); printf(#reg "=%016"PRIx64"\n", tmp.uq);
 
 /* XXX: do four pixels at a time */
 static void h_resample_fast4_mmx(uint8_t *dst, int dst_width,
@@ -277,7 +278,7 @@ static void v_resample4_mmx(uint8_t *dst, int dst_width, const uint8_t *src,
     }
     emms();
 }
-#endif
+#endif /* HAVE_MMX */
 
 #ifdef HAVE_ALTIVEC
 typedef         union {
@@ -404,7 +405,7 @@ void v_resample16_altivec(uint8_t *dst, int dst_width, const uint8_t *src,
         dst_width--;
     }
 }
-#endif
+#endif /* HAVE_ALTIVEC */
 
 /* slow version to handle limit cases. Does not need optimisation */
 static void h_resample_slow(uint8_t *dst, int dst_width,
@@ -667,6 +668,8 @@ struct SwsContext *sws_getContext(int srcW, int srcH, int srcFormat,
 
 void sws_freeContext(struct SwsContext *ctx)
 {
+    if (!ctx)
+        return;
     if ((ctx->resampling_ctx->iwidth != ctx->resampling_ctx->owidth) ||
         (ctx->resampling_ctx->iheight != ctx->resampling_ctx->oheight)) {
         img_resample_close(ctx->resampling_ctx);
@@ -676,6 +679,42 @@ void sws_freeContext(struct SwsContext *ctx)
     av_free(ctx);
 }
 
+
+/**
+ * Checks if context is valid or reallocs a new one instead.
+ * If context is NULL, just calls sws_getContext() to get a new one.
+ * Otherwise, checks if the parameters are the same already saved in context.
+ * If that is the case, returns the current context.
+ * Otherwise, frees context and gets a new one.
+ *
+ * Be warned that srcFilter, dstFilter are not checked, they are
+ * asumed to remain valid.
+ */
+struct SwsContext *sws_getCachedContext(struct SwsContext *ctx,
+                        int srcW, int srcH, int srcFormat,
+                        int dstW, int dstH, int dstFormat, int flags,
+                        SwsFilter *srcFilter, SwsFilter *dstFilter, double *param)
+{
+    if (ctx != NULL) {
+        if ((ctx->resampling_ctx->iwidth != srcW) ||
+                        (ctx->resampling_ctx->iheight != srcH) ||
+                        (ctx->src_pix_fmt != srcFormat) ||
+                        (ctx->resampling_ctx->owidth != dstW) ||
+                        (ctx->resampling_ctx->oheight != dstH) ||
+                        (ctx->dst_pix_fmt != dstFormat))
+        {
+            sws_freeContext(ctx);
+            ctx = NULL;
+        }
+    }
+    if (ctx == NULL) {
+        return sws_getContext(srcW, srcH, srcFormat,
+                        dstW, dstH, dstFormat, flags,
+                        srcFilter, dstFilter, param);
+    }
+    return ctx;
+}
+
 int sws_scale(struct SwsContext *ctx, uint8_t* src[], int srcStride[],
               int srcSliceY, int srcSliceH, uint8_t* dst[], int dstStride[])
 {
@@ -686,7 +725,7 @@ int sws_scale(struct SwsContext *ctx, uint8_t* src[], int srcStride[],
     uint8_t *buf1 = NULL, *buf2 = NULL;
     enum PixelFormat current_pix_fmt;
 
-    for (i = 0; i < 3; i++) {
+    for (i = 0; i < 4; i++) {
         src_pict.data[i] = src[i];
         src_pict.linesize[i] = srcStride[i];
         dst_pict.data[i] = dst[i];
@@ -759,7 +798,7 @@ int sws_scale(struct SwsContext *ctx, uint8_t* src[], int srcStride[],
             goto the_end;
         }
     } else if (resampled_picture != &dst_pict) {
-        img_copy(&dst_pict, resampled_picture, current_pix_fmt,
+        av_picture_copy(&dst_pict, resampled_picture, current_pix_fmt,
                         ctx->resampling_ctx->owidth, ctx->resampling_ctx->oheight);
     }
 
@@ -772,6 +811,7 @@ the_end:
 
 #ifdef TEST
 #include <stdio.h>
+#undef exit
 
 /* input */
 #define XSIZE 256
@@ -899,8 +939,8 @@ int main(int argc, char **argv)
         exit(1);
     }
     av_log(NULL, AV_LOG_INFO, "MMX OK\n");
-#endif
+#endif /* HAVE_MMX */
     return 0;
 }
 
-#endif
+#endif /* TEST */