/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "image.h"
#include "exceptions.h"
#include "scaler.h"
+#include "timer.h"
+#include "rect.h"
#include "md5_digester.h"
#include "i18n.h"
using std::min;
using std::cout;
using std::cerr;
+using std::list;
using boost::shared_ptr;
-using libdcp::Size;
+using dcp::Size;
int
Image::line_factor (int n) const
/** Crop this image, scale it to `inter_size' and then place it in a black frame of `out_size' */
shared_ptr<Image>
-Image::crop_scale_window (Crop crop, libdcp::Size inter_size, libdcp::Size out_size, Scaler const * scaler, AVPixelFormat out_format, bool out_aligned) const
+Image::crop_scale_window (Crop crop, dcp::Size inter_size, dcp::Size out_size, Scaler const * scaler, AVPixelFormat out_format, bool out_aligned) const
{
assert (scaler);
/* Empirical testing suggests that sws_scale() will crash if
out->make_black ();
/* Size of the image after any crop */
- libdcp::Size const cropped_size = crop.apply (size ());
+ dcp::Size const cropped_size = crop.apply (size ());
/* Scale context for a scale from cropped_size to inter_size */
struct SwsContext* scale_context = sws_getContext (
- cropped_size.width, cropped_size.height, pixel_format(),
- inter_size.width, inter_size.height, out_format,
- scaler->ffmpeg_id (), 0, 0, 0
+ cropped_size.width, cropped_size.height, pixel_format(),
+ inter_size.width, inter_size.height, out_format,
+ scaler->ffmpeg_id (), 0, 0, 0
);
if (!scale_context) {
}
shared_ptr<Image>
-Image::scale (libdcp::Size out_size, Scaler const * scaler, AVPixelFormat out_format, bool out_aligned) const
+Image::scale (dcp::Size out_size, Scaler const * scaler, AVPixelFormat out_format, bool out_aligned) const
{
assert (scaler);
/* Empirical testing suggests that sws_scale() will crash if
shared_ptr<Image>
Image::crop (Crop crop, bool aligned) const
{
- libdcp::Size cropped_size = crop.apply (size ());
+ dcp::Size cropped_size = crop.apply (size ());
shared_ptr<Image> out (new Image (pixel_format(), cropped_size, aligned));
for (int c = 0; c < components(); ++c) {
}
}
+void
+Image::make_transparent ()
+{
+ if (_pixel_format != PIX_FMT_RGBA) {
+ throw PixelFormatError ("make_transparent()", _pixel_format);
+ }
+
+ memset (data()[0], 0, lines(0) * stride()[0]);
+}
+
void
Image::alpha_blend (shared_ptr<const Image> other, Position<int> position)
{
- /* Only implemented for RGBA onto RGB24 so far */
- assert (_pixel_format == PIX_FMT_RGB24 && other->pixel_format() == PIX_FMT_RGBA);
+ assert (other->pixel_format() == PIX_FMT_RGBA);
+ int const other_bpp = 4;
+
+ int this_bpp = 0;
+ switch (_pixel_format) {
+ case PIX_FMT_BGRA:
+ case PIX_FMT_RGBA:
+ this_bpp = 4;
+ break;
+ case PIX_FMT_RGB24:
+ this_bpp = 3;
+ break;
+ default:
+ assert (false);
+ }
int start_tx = position.x;
int start_ox = 0;
}
for (int ty = start_ty, oy = start_oy; ty < size().height && oy < other->size().height; ++ty, ++oy) {
- uint8_t* tp = data()[0] + ty * stride()[0] + position.x * 3;
+ uint8_t* tp = data()[0] + ty * stride()[0] + start_tx * this_bpp;
uint8_t* op = other->data()[0] + oy * other->stride()[0];
for (int tx = start_tx, ox = start_ox; tx < size().width && ox < other->size().width; ++tx, ++ox) {
float const alpha = float (op[3]) / 255;
- tp[0] = (tp[0] * (1 - alpha)) + op[0] * alpha;
- tp[1] = (tp[1] * (1 - alpha)) + op[1] * alpha;
- tp[2] = (tp[2] * (1 - alpha)) + op[2] * alpha;
- tp += 3;
- op += 4;
+ tp[0] = op[0] + (tp[0] * (1 - alpha));
+ tp[1] = op[1] + (tp[1] * (1 - alpha));
+ tp[2] = op[2] + (tp[2] * (1 - alpha));
+ tp[3] = op[3] + (tp[3] * (1 - alpha));
+
+ tp += this_bpp;
+ op += other_bpp;
}
}
}
* @param p Pixel format.
* @param s Size in pixels.
*/
-Image::Image (AVPixelFormat p, libdcp::Size s, bool aligned)
- : libdcp::Image (s)
+Image::Image (AVPixelFormat p, dcp::Size s, bool aligned)
+ : dcp::Image (s)
, _pixel_format (p)
, _aligned (aligned)
{
}
Image::Image (Image const & other)
- : libdcp::Image (other)
+ : dcp::Image (other)
, _pixel_format (other._pixel_format)
, _aligned (other._aligned)
{
}
Image::Image (AVFrame* frame)
- : libdcp::Image (libdcp::Size (frame->width, frame->height))
+ : dcp::Image (dcp::Size (frame->width, frame->height))
, _pixel_format (static_cast<AVPixelFormat> (frame->format))
, _aligned (true)
{
}
Image::Image (shared_ptr<const Image> other, bool aligned)
- : libdcp::Image (other)
+ : dcp::Image (other)
, _pixel_format (other->_pixel_format)
, _aligned (aligned)
{
void
Image::swap (Image & other)
{
- libdcp::Image::swap (other);
+ dcp::Image::swap (other);
std::swap (_pixel_format, other._pixel_format);
return _stride;
}
-libdcp::Size
+dcp::Size
Image::size () const
{
return _size;
return _aligned;
}
+PositionImage
+merge (list<PositionImage> images)
+{
+ if (images.empty ()) {
+ return PositionImage ();
+ }
+
+ if (images.size() == 1) {
+ return images.front ();
+ }
+
+ dcpomatic::Rect<int> all (images.front().position, images.front().image->size().width, images.front().image->size().height);
+ for (list<PositionImage>::const_iterator i = images.begin(); i != images.end(); ++i) {
+ all.extend (dcpomatic::Rect<int> (i->position, i->image->size().width, i->image->size().height));
+ }
+
+ shared_ptr<Image> merged (new Image (images.front().image->pixel_format (), dcp::Size (all.width, all.height), true));
+ merged->make_transparent ();
+ for (list<PositionImage>::const_iterator i = images.begin(); i != images.end(); ++i) {
+ merged->alpha_blend (i->image, i->position - all.position());
+ }
+
+ return PositionImage (merged, all.position ());
+}
+
string
Image::digest () const
{
return digester.get ();
}
-
+
+bool
+operator== (Image const & a, Image const & b)
+{
+ if (a.components() != b.components() || a.pixel_format() != b.pixel_format() || a.aligned() != b.aligned()) {
+ return false;
+ }
+
+ for (int c = 0; c < a.components(); ++c) {
+ if (a.lines(c) != b.lines(c) || a.line_size()[c] != b.line_size()[c] || a.stride()[c] != b.stride()[c]) {
+ return false;
+ }
+
+ uint8_t* p = a.data()[c];
+ uint8_t* q = b.data()[c];
+ for (int y = 0; y < a.lines(c); ++y) {
+ if (memcmp (p, q, a.line_size()[c]) != 0) {
+ return false;
+ }
+
+ p += a.stride()[c];
+ q += b.stride()[c];
+ }
+ }
+
+ return true;
+}
+
+void
+Image::fade (float f)
+{
+ switch (_pixel_format) {
+ case PIX_FMT_YUV420P:
+ case PIX_FMT_YUV422P:
+ case PIX_FMT_YUV444P:
+ case PIX_FMT_YUV411P:
+ case PIX_FMT_YUVJ420P:
+ case PIX_FMT_YUVJ422P:
+ case PIX_FMT_YUVJ444P:
+ case PIX_FMT_RGB24:
+ case PIX_FMT_ARGB:
+ case PIX_FMT_RGBA:
+ case PIX_FMT_ABGR:
+ case PIX_FMT_BGRA:
+ case PIX_FMT_RGB555LE:
+ /* 8-bit */
+ for (int c = 0; c < 3; ++c) {
+ uint8_t* p = data()[c];
+ for (int y = 0; y < lines(c); ++y) {
+ uint8_t* q = p;
+ for (int x = 0; x < line_size()[c]; ++x) {
+ *q = int (float (*q) * f);
+ ++q;
+ }
+ p += stride()[c];
+ }
+ }
+ break;
+
+ case PIX_FMT_YUV422P9LE:
+ case PIX_FMT_YUV444P9LE:
+ case PIX_FMT_YUV422P10LE:
+ case PIX_FMT_YUV444P10LE:
+ case PIX_FMT_YUV422P16LE:
+ case PIX_FMT_YUV444P16LE:
+ case AV_PIX_FMT_YUVA420P9LE:
+ case AV_PIX_FMT_YUVA422P9LE:
+ case AV_PIX_FMT_YUVA444P9LE:
+ case AV_PIX_FMT_YUVA420P10LE:
+ case AV_PIX_FMT_YUVA422P10LE:
+ case AV_PIX_FMT_YUVA444P10LE:
+ /* 16-bit little-endian */
+ for (int c = 0; c < 3; ++c) {
+ int const stride_pixels = stride()[c] / 2;
+ int const line_size_pixels = line_size()[c] / 2;
+ uint16_t* p = reinterpret_cast<uint16_t*> (data()[c]);
+ for (int y = 0; y < lines(c); ++y) {
+ uint16_t* q = p;
+ for (int x = 0; x < line_size_pixels; ++x) {
+ *q = int (float (*q) * f);
+ ++q;
+ }
+ p += stride_pixels;
+ }
+ }
+ break;
+
+ case PIX_FMT_YUV422P9BE:
+ case PIX_FMT_YUV444P9BE:
+ case PIX_FMT_YUV444P10BE:
+ case PIX_FMT_YUV422P10BE:
+ case AV_PIX_FMT_YUVA420P9BE:
+ case AV_PIX_FMT_YUVA422P9BE:
+ case AV_PIX_FMT_YUVA444P9BE:
+ case AV_PIX_FMT_YUVA420P10BE:
+ case AV_PIX_FMT_YUVA422P10BE:
+ case AV_PIX_FMT_YUVA444P10BE:
+ case AV_PIX_FMT_YUVA420P16BE:
+ case AV_PIX_FMT_YUVA422P16BE:
+ case AV_PIX_FMT_YUVA444P16BE:
+ /* 16-bit big-endian */
+ for (int c = 0; c < 3; ++c) {
+ int const stride_pixels = stride()[c] / 2;
+ int const line_size_pixels = line_size()[c] / 2;
+ uint16_t* p = reinterpret_cast<uint16_t*> (data()[c]);
+ for (int y = 0; y < lines(c); ++y) {
+ uint16_t* q = p;
+ for (int x = 0; x < line_size_pixels; ++x) {
+ *q = swap_16 (int (float (swap_16 (*q)) * f));
+ ++q;
+ }
+ p += stride_pixels;
+ }
+ }
+ break;
+
+ case PIX_FMT_UYVY422:
+ {
+ int const Y = lines(0);
+ int const X = line_size()[0];
+ uint8_t* p = data()[0];
+ for (int y = 0; y < Y; ++y) {
+ for (int x = 0; x < X; ++x) {
+ *p = int (float (*p) * f);
+ ++p;
+ }
+ }
+ break;
+ }
+
+ default:
+ throw PixelFormatError ("fade()", _pixel_format);
+ }
+}
projects / dcpomatic.git / blobdiff