std::swap (_pixel_format, other._pixel_format);
}
-/** @param n Component index.
- * @return Number of lines in the image for the given component.
- */
int
-Image::lines (int n) const
+Image::line_factor (int n) const
{
if (n == 0) {
- return size().height;
+ return 1;
}
-
+
AVPixFmtDescriptor const * d = av_pix_fmt_desc_get(_pixel_format);
if (!d) {
throw PixelFormatError (N_("lines()"), _pixel_format);
}
- return size().height / pow(2, d->log2_chroma_h);
+ return pow (2.0f, d->log2_chroma_h);
+}
+
+/** @param n Component index.
+ * @return Number of lines in the image for the given component.
+ */
+int
+Image::lines (int n) const
+{
+ return rint (ceil (static_cast<double>(size().height) / line_factor (n)));
}
/** @return Number of components */
for (int c = 0; c < components(); ++c) {
int const crop_left_in_bytes = bytes_per_pixel(c) * crop.left;
int const cropped_width_in_bytes = bytes_per_pixel(c) * cropped_size.width;
-
+
/* Start of the source line, cropped from the top but not the left */
- uint8_t* in_p = data()[c] + crop.top * stride()[c];
+ uint8_t* in_p = data()[c] + (crop.top / out->line_factor(c)) * stride()[c];
uint8_t* out_p = out->data()[c];
-
- for (int y = 0; y < cropped_size.height; ++y) {
+
+ for (int y = 0; y < out->lines(c); ++y) {
memcpy (out_p, in_p + crop_left_in_bytes, cropped_width_in_bytes);
in_p += stride()[c];
out_p += out->stride()[c];
Image::make_black ()
{
/* U/V black value for 8-bit colour */
- static uint8_t const eight_bit_uv = (1 << 7) - 1;
+ static uint8_t const eight_bit_uv = (1 << 7) - 1;
/* U/V black value for 9-bit colour */
- static uint16_t const nine_bit_uv = (1 << 8) - 1;
+ static uint16_t const nine_bit_uv = (1 << 8) - 1;
/* U/V black value for 10-bit colour */
- static uint16_t const ten_bit_uv = (1 << 9) - 1;
+ static uint16_t const ten_bit_uv = (1 << 9) - 1;
/* U/V black value for 16-bit colour */
static uint16_t const sixteen_bit_uv = (1 << 15) - 1;
memset (data()[2], eight_bit_uv, lines(2) * stride()[2]);
break;
+ case PIX_FMT_YUVJ420P:
+ case PIX_FMT_YUVJ422P:
+ case PIX_FMT_YUVJ444P:
+ memset (data()[0], 0, lines(0) * stride()[0]);
+ memset (data()[1], eight_bit_uv + 1, lines(1) * stride()[1]);
+ memset (data()[2], eight_bit_uv + 1, lines(2) * stride()[2]);
+ break;
+
case PIX_FMT_YUV422P9LE:
case PIX_FMT_YUV444P9LE:
yuv_16_black (nine_bit_uv);
bpp[0] = floor ((d->comp[0].depth_minus1 + 1 + 7) / 8);
if (d->nb_components > 1) {
- bpp[1] = floor ((d->comp[1].depth_minus1 + 1 + 7) / 8) / pow (2, d->log2_chroma_w);
+ bpp[1] = floor ((d->comp[1].depth_minus1 + 1 + 7) / 8) / pow (2.0f, d->log2_chroma_w);
}
if (d->nb_components > 2) {
- bpp[2] = floor ((d->comp[2].depth_minus1 + 1 + 7) / 8) / pow (2, d->log2_chroma_w);
+ bpp[2] = floor ((d->comp[2].depth_minus1 + 1 + 7) / 8) / pow (2.0f, d->log2_chroma_w);
}
if (d->nb_components > 3) {
- bpp[3] = floor ((d->comp[3].depth_minus1 + 1 + 7) / 8) / pow (2, d->log2_chroma_w);
+ bpp[3] = floor ((d->comp[3].depth_minus1 + 1 + 7) / 8) / pow (2.0f, d->log2_chroma_w);
}
if ((d->flags & PIX_FMT_PLANAR) == 0) {
}
}
-SimpleImage::SimpleImage (shared_ptr<const Image> other)
+SimpleImage::SimpleImage (shared_ptr<const Image> other, bool aligned)
: Image (*other.get())
+ , _size (other->size())
+ , _aligned (aligned)
{
- _size = other->size ();
- _aligned = true;
-
allocate ();
for (int i = 0; i < components(); ++i) {