X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fimage.cc;h=bc64ba3b82373cb34bce1aff4e0f450d93ce5b29;hb=cb990adba9c57e5107ef2aa9716cf0a26c1df83d;hp=3b8c1a28ef48aa1d9b96638b708fb8a19a8f944b;hpb=a65d08d8a4e84b1f2321154fc4b16384dcd6b10f;p=dcpomatic.git diff --git a/src/lib/image.cc b/src/lib/image.cc index 3b8c1a28e..bc64ba3b8 100644 --- a/src/lib/image.cc +++ b/src/lib/image.cc @@ -1,5 +1,5 @@ /* - Copyright (C) 2012 Carl Hetherington + Copyright (C) 2012-2014 Carl Hetherington 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 @@ -30,6 +30,8 @@ extern "C" { #include "image.h" #include "exceptions.h" #include "scaler.h" +#include "timer.h" +#include "rect.h" #include "md5_digester.h" #include "i18n.h" @@ -38,8 +40,9 @@ using std::string; 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 @@ -83,7 +86,7 @@ Image::components () const /** Crop this image, scale it to `inter_size' and then place it in a black frame of `out_size' */ shared_ptr -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 @@ -99,13 +102,13 @@ Image::crop_scale_window (Crop crop, libdcp::Size inter_size, libdcp::Size out_s 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) { @@ -139,7 +142,7 @@ Image::crop_scale_window (Crop crop, libdcp::Size inter_size, libdcp::Size out_s } shared_ptr -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 @@ -170,7 +173,7 @@ Image::scale (libdcp::Size out_size, Scaler const * scaler, AVPixelFormat out_fo shared_ptr Image::crop (Crop crop, bool aligned) const { - libdcp::Size cropped_size = crop.apply (size ()); + dcp::Size cropped_size = crop.apply (size ()); shared_ptr out (new Image (pixel_format(), cropped_size, aligned)); for (int c = 0; c < components(); ++c) { @@ -345,11 +348,34 @@ Image::make_black () } } +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 other, Position 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; @@ -368,15 +394,17 @@ Image::alpha_blend (shared_ptr other, Position position) } 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; } } } @@ -460,8 +488,8 @@ Image::bytes_per_pixel (int c) const * @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) { @@ -503,7 +531,7 @@ Image::allocate () } Image::Image (Image const & other) - : libdcp::Image (other) + : dcp::Image (other) , _pixel_format (other._pixel_format) , _aligned (other._aligned) { @@ -521,7 +549,7 @@ Image::Image (Image const & other) } Image::Image (AVFrame* frame) - : libdcp::Image (libdcp::Size (frame->width, frame->height)) + : dcp::Image (dcp::Size (frame->width, frame->height)) , _pixel_format (static_cast (frame->format)) , _aligned (true) { @@ -540,7 +568,7 @@ Image::Image (AVFrame* frame) } Image::Image (shared_ptr other, bool aligned) - : libdcp::Image (other) + : dcp::Image (other) , _pixel_format (other->_pixel_format) , _aligned (aligned) { @@ -573,7 +601,7 @@ Image::operator= (Image const & other) void Image::swap (Image & other) { - libdcp::Image::swap (other); + dcp::Image::swap (other); std::swap (_pixel_format, other._pixel_format); @@ -616,7 +644,7 @@ Image::stride () const return _stride; } -libdcp::Size +dcp::Size Image::size () const { return _size; @@ -628,6 +656,31 @@ Image::aligned () const return _aligned; } +PositionImage +merge (list images) +{ + if (images.empty ()) { + return PositionImage (); + } + + if (images.size() == 1) { + return images.front (); + } + + dcpomatic::Rect all (images.front().position, images.front().image->size().width, images.front().image->size().height); + for (list::const_iterator i = images.begin(); i != images.end(); ++i) { + all.extend (dcpomatic::Rect (i->position, i->image->size().width, i->image->size().height)); + } + + shared_ptr merged (new Image (images.front().image->pixel_format (), dcp::Size (all.width, all.height), true)); + merged->make_transparent (); + for (list::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 { @@ -639,4 +692,137 @@ 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 (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 (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); + } +}