#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;
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,
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);
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[])
{
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];
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);
}