* without any additional vertical scaling (or point-scaling).
*
* @param c SWS scaling context
- * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
- * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
- * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
- * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
- * @param dest pointer to the 4 output planes (Y/U/V/A)
+ * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param dest pointer to the 4 output planes (Y/U/V/A). For >8bit
+ * output, this is in uint16_t
* @param dstW width of dest[0], dest[3], lumSrc and alpSrc in pixels
* @param chrDstW width of dest[1], dest[2], chrUSrc and chrVSrc
*/
*
* @param c SWS scaling context
* @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
- * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
+ * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
* @param lumFilterSize number of vertical luma/alpha input lines to scale
* @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
- * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
- * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
+ * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
* @param chrFilterSize number of vertical chroma input lines to scale
- * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
- * @param dest pointer to the 4 output planes (Y/U/V/A)
+ * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param dest pointer to the 4 output planes (Y/U/V/A). For >8bit
+ * output, this is in uint16_t
* @param dstW width of dest[0], dest[3], lumSrc and alpSrc in pixels
* @param chrDstW width of dest[1], dest[2], chrUSrc and chrVSrc
*/
* that this function may do chroma scaling, see the "uvalpha" argument.
*
* @param c SWS scaling context
- * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
- * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
- * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
- * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
- * @param dest pointer to the output plane
+ * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param dest pointer to the output plane. For 16bit output, this is
+ * uint16_t
* @param dstW width of lumSrc and alpSrc in pixels, number of pixels
* to write into dest[]
* @param uvalpha chroma scaling coefficient for the second line of chroma
* output by doing bilinear scaling between two input lines.
*
* @param c SWS scaling context
- * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
- * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
- * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
- * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
- * @param dest pointer to the output plane
+ * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param dest pointer to the output plane. For 16bit output, this is
+ * uint16_t
* @param dstW width of lumSrc and alpSrc in pixels, number of pixels
* to write into dest[]
* @param yalpha luma/alpha scaling coefficients for the second input line.
*
* @param c SWS scaling context
* @param lumFilter vertical luma/alpha scaling coefficients, 12bit [0,4096]
- * @param lumSrc scaled luma (Y) source data, 15bit for 8bit output
+ * @param lumSrc scaled luma (Y) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
* @param lumFilterSize number of vertical luma/alpha input lines to scale
* @param chrFilter vertical chroma scaling coefficients, 12bit [0,4096]
- * @param chrUSrc scaled chroma (U) source data, 15bit for 8bit output
- * @param chrVSrc scaled chroma (V) source data, 15bit for 8bit output
+ * @param chrUSrc scaled chroma (U) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param chrVSrc scaled chroma (V) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
* @param chrFilterSize number of vertical chroma input lines to scale
- * @param alpSrc scaled alpha (A) source data, 15bit for 8bit output
- * @param dest pointer to the output plane
+ * @param alpSrc scaled alpha (A) source data, 15bit for 8-10bit output,
+ * 19-bit for 16bit output (in int32_t)
+ * @param dest pointer to the output plane. For 16bit output, this is
+ * uint16_t
* @param dstW width of lumSrc and alpSrc in pixels, number of pixels
* to write into dest[]
* @param y vertical line number for this output. This does not need
enum PixelFormat srcFormat; ///< Source pixel format.
int dstFormatBpp; ///< Number of bits per pixel of the destination pixel format.
int srcFormatBpp; ///< Number of bits per pixel of the source pixel format.
- int scalingBpp;
+ int dstBpc, srcBpc;
int chrSrcHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in source image.
int chrSrcVSubSample; ///< Binary logarithm of vertical subsampling factor between luma/alpha and chroma planes in source image.
int chrDstHSubSample; ///< Binary logarithm of horizontal subsampling factor between luma/alpha and chroma planes in destination image.
DECLARE_ALIGNED(8, uint64_t, v_temp);
DECLARE_ALIGNED(8, uint64_t, y_temp);
int32_t alpMmxFilter[4*MAX_FILTER_SIZE];
+ // alignment of these values is not necessary, but merely here
+ // to maintain the same offset across x8632 and x86-64. Once we
+ // use proper offset macros in the asm, they can be removed.
DECLARE_ALIGNED(8, ptrdiff_t, uv_off_px); ///< offset (in pixels) between u and v planes
DECLARE_ALIGNED(8, ptrdiff_t, uv_off_byte); ///< offset (in bytes) between u and v planes
- uint16_t dither16[8];
- uint32_t dither32[8];
+ DECLARE_ALIGNED(8, uint16_t, dither16)[8];
+ DECLARE_ALIGNED(8, uint32_t, dither32)[8];
const uint8_t *chrDither8, *lumDither8;
* lines, to produce one (differently sized) line of output data.
*
* @param dst pointer to destination buffer for horizontally scaled
- * data. If the scaling depth (SwsContext->scalingBpp) is
- * 8, data will be 15bpp in 16bits (int16_t) width. If
- * scaling depth is 16, data will be 19bpp in 32bpp
- * (int32_t) width.
+ * data. If the number of bits per component of one
+ * destination pixel (SwsContext->dstBpc) is <= 10, data
+ * will be 15bpc in 16bits (int16_t) width. Else (i.e.
+ * SwsContext->dstBpc == 16), data will be 19bpc in
+ * 32bits (int32_t) width.
* @param dstW width of destination image
- * @param src pointer to source data to be scaled. If scaling depth
- * is 8, this is 8bpp in 8bpp (uint8_t) width. If scaling
- * depth is 16, this is native depth in 16bbp (uint16_t)
- * width. In other words, for 9-bit YUV input, this is
- * 9bpp, for 10-bit YUV input, this is 10bpp, and for
- * 16-bit RGB or YUV, this is 16bpp.
+ * @param src pointer to source data to be scaled. If the number of
+ * bits per component of a source pixel (SwsContext->srcBpc)
+ * is 8, this is 8bpc in 8bits (uint8_t) width. Else
+ * (i.e. SwsContext->dstBpc > 8), this is native depth
+ * in 16bits (uint16_t) width. In other words, for 9-bit
+ * YUV input, this is 9bpc, for 10-bit YUV input, this is
+ * 10bpc, and for 16-bit RGB or YUV, this is 16bpc.
* @param filter filter coefficients to be used per output pixel for
* scaling. This contains 14bpp filtering coefficients.
* Guaranteed to contain dstW * filterSize entries.
* (and input coefficients thus padded with zeroes)
* to simplify creating SIMD code.
*/
- void (*hScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src,
- const int16_t *filter, const int16_t *filterPos,
- int filterSize);
+ /** @{ */
+ void (*hyScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src,
+ const int16_t *filter, const int16_t *filterPos,
+ int filterSize);
+ void (*hcScale)(struct SwsContext *c, int16_t *dst, int dstW, const uint8_t *src,
+ const int16_t *filter, const int16_t *filterPos,
+ int filterSize);
+ /** @} */
void (*lumConvertRange)(int16_t *dst, int width); ///< Color range conversion function for luma plane if needed.
void (*chrConvertRange)(int16_t *dst1, int16_t *dst2, int width); ///< Color range conversion function for chroma planes if needed.
- /**
- * dst[..] = (src[..] << 8) | src[..];
- */
- void (*scale8To16Rv)(uint16_t *dst, const uint8_t *src, int len);
- /**
- * dst[..] = src[..] >> 4;
- */
- void (*scale19To15Fw)(int16_t *dst, const int32_t *src, int len);
-
int needs_hcscale; ///< Set if there are chroma planes to be converted.
} SwsContext;
projects / ffmpeg / blobdiff