X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fimage.cc;h=d4ec6f99a6381070835b2fd54a875f414e5d7f87;hb=39bc73fe192f932ed6695eb87b19de446e8b4f55;hp=9a3aa8d45b036557fcb6f0297cc92afbf519aeb1;hpb=089b90439e745a218494e76b45e7df6215af01df;p=dcpomatic.git diff --git a/src/lib/image.cc b/src/lib/image.cc index 9a3aa8d45..d4ec6f99a 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 @@ -22,21 +22,28 @@ */ #include +#include extern "C" { #include #include #include -#include } #include "image.h" #include "exceptions.h" #include "scaler.h" +#include "timer.h" +#include "rect.h" + +#include "i18n.h" using std::string; using std::min; using std::cout; +using std::cerr; +using std::list; +using std::stringstream; using boost::shared_ptr; -using libdcp::Size; +using dcp::Size; int Image::line_factor (int n) const @@ -78,8 +85,9 @@ Image::components () const return d->nb_components; } +/** Crop this image, scale it to `inter_size' and then place it in a black frame of `out_size' */ shared_ptr -Image::scale (libdcp::Size out_size, Scaler const * scaler, AVPixelFormat result_format, bool result_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 @@ -87,78 +95,86 @@ Image::scale (libdcp::Size out_size, Scaler const * scaler, AVPixelFormat result */ assert (aligned ()); - shared_ptr scaled (new Image (result_format, out_size, result_aligned)); + assert (out_size.width >= inter_size.width); + assert (out_size.height >= inter_size.height); + + /* Here's an image of out_size */ + shared_ptr out (new Image (out_format, out_size, out_aligned)); + out->make_black (); + + /* Size of the image after any crop */ + 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 ( - size().width, size().height, pixel_format(), - out_size.width, out_size.height, result_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) { + throw StringError (N_("Could not allocate SwsContext")); + } + + /* Prepare input data pointers with crop */ + uint8_t* scale_in_data[components()]; + for (int c = 0; c < components(); ++c) { + scale_in_data[c] = data()[c] + int (rint (bytes_per_pixel(c) * crop.left)) + stride()[c] * (crop.top / line_factor(c)); + } + + /* Corner of the image within out_size */ + Position const corner ((out_size.width - inter_size.width) / 2, (out_size.height - inter_size.height) / 2); + + uint8_t* scale_out_data[out->components()]; + for (int c = 0; c < out->components(); ++c) { + scale_out_data[c] = out->data()[c] + int (rint (out->bytes_per_pixel(c) * corner.x)) + out->stride()[c] * corner.y; + } + sws_scale ( scale_context, - data(), stride(), - 0, size().height, - scaled->data(), scaled->stride() + scale_in_data, stride(), + 0, cropped_size.height, + scale_out_data, out->stride() ); sws_freeContext (scale_context); - return scaled; + return out; } -/** Run a FFmpeg post-process on this image and return the processed version. - * @param pp Flags for the required set of post processes. - * @return Post-processed image. - */ shared_ptr -Image::post_process (string pp, bool aligned) const +Image::scale (dcp::Size out_size, Scaler const * scaler, AVPixelFormat out_format, bool out_aligned) const { - shared_ptr out (new Image (pixel_format(), size (), aligned)); + assert (scaler); + /* Empirical testing suggests that sws_scale() will crash if + the input image is not aligned. + */ + assert (aligned ()); - int pp_format = 0; - switch (pixel_format()) { - case PIX_FMT_YUV420P: - pp_format = PP_FORMAT_420; - break; - case PIX_FMT_YUV422P10LE: - case PIX_FMT_YUV422P: - case PIX_FMT_UYVY422: - pp_format = PP_FORMAT_422; - break; - case PIX_FMT_YUV444P: - case PIX_FMT_YUV444P9BE: - case PIX_FMT_YUV444P9LE: - case PIX_FMT_YUV444P10BE: - case PIX_FMT_YUV444P10LE: - pp_format = PP_FORMAT_444; - default: - throw PixelFormatError ("post_process", pixel_format()); - } - - pp_mode* mode = pp_get_mode_by_name_and_quality (pp.c_str (), PP_QUALITY_MAX); - pp_context* context = pp_get_context (size().width, size().height, pp_format | PP_CPU_CAPS_MMX2); - - pp_postprocess ( - (const uint8_t **) data(), stride(), - out->data(), out->stride(), - size().width, size().height, - 0, 0, mode, context, 0 + shared_ptr scaled (new Image (out_format, out_size, out_aligned)); + + struct SwsContext* scale_context = sws_getContext ( + size().width, size().height, pixel_format(), + out_size.width, out_size.height, out_format, + scaler->ffmpeg_id (), 0, 0, 0 ); - - pp_free_mode (mode); - pp_free_context (context); - return out; + sws_scale ( + scale_context, + data(), stride(), + 0, size().height, + scaled->data(), scaled->stride() + ); + + sws_freeContext (scale_context); + + return scaled; } shared_ptr Image::crop (Crop crop, bool aligned) const { - libdcp::Size cropped_size = size (); - cropped_size.width -= crop.left + crop.right; - cropped_size.height -= crop.top + crop.bottom; - + dcp::Size cropped_size = crop.apply (size ()); shared_ptr out (new Image (pixel_format(), cropped_size, aligned)); for (int c = 0; c < components(); ++c) { @@ -226,6 +242,7 @@ Image::make_black () case PIX_FMT_YUV420P: case PIX_FMT_YUV422P: case PIX_FMT_YUV444P: + case PIX_FMT_YUV411P: memset (data()[0], 0, lines(0) * stride()[0]); memset (data()[1], eight_bit_uv, lines(1) * stride()[1]); memset (data()[2], eight_bit_uv, lines(2) * stride()[2]); @@ -300,7 +317,11 @@ Image::make_black () yuv_16_black (sixteen_bit_uv, true); break; - case PIX_FMT_RGB24: + case PIX_FMT_RGB24: + case PIX_FMT_ARGB: + case PIX_FMT_RGBA: + case PIX_FMT_ABGR: + case PIX_FMT_BGRA: memset (data()[0], 0, lines(0) * stride()[0]); break; @@ -325,11 +346,31 @@ 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); + int this_bpp = 0; + int other_bpp = 0; + + if (_pixel_format == PIX_FMT_BGRA && other->pixel_format() == PIX_FMT_RGBA) { + this_bpp = 4; + other_bpp = 4; + } else if (_pixel_format == PIX_FMT_RGB24 && other->pixel_format() == PIX_FMT_RGBA) { + this_bpp = 3; + other_bpp = 4; + } else { + assert (false); + } int start_tx = position.x; int start_ox = 0; @@ -348,15 +389,15 @@ 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] + position.x * 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 += this_bpp; + op += other_bpp; } } } @@ -440,8 +481,8 @@ 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) { @@ -451,13 +492,13 @@ Image::Image (AVPixelFormat p, libdcp::Size s, bool aligned) void Image::allocate () { - _data = (uint8_t **) av_malloc (4 * sizeof (uint8_t *)); + _data = (uint8_t **) wrapped_av_malloc (4 * sizeof (uint8_t *)); _data[0] = _data[1] = _data[2] = _data[3] = 0; - _line_size = (int *) av_malloc (4 * sizeof (int)); + _line_size = (int *) wrapped_av_malloc (4 * sizeof (int)); _line_size[0] = _line_size[1] = _line_size[2] = _line_size[3] = 0; - _stride = (int *) av_malloc (4 * sizeof (int)); + _stride = (int *) wrapped_av_malloc (4 * sizeof (int)); _stride[0] = _stride[1] = _stride[2] = _stride[3] = 0; for (int i = 0; i < components(); ++i) { @@ -473,12 +514,12 @@ Image::allocate () seem to mind. The nasty + 1 in this malloc makes sure there is always a byte for that instruction to read safely. */ - _data[i] = (uint8_t *) av_malloc (_stride[i] * lines (i) + 1); + _data[i] = (uint8_t *) wrapped_av_malloc (_stride[i] * lines (i) + 1); } } Image::Image (Image const & other) - : libdcp::Image (other) + : dcp::Image (other) , _pixel_format (other._pixel_format) , _aligned (other._aligned) { @@ -496,7 +537,7 @@ 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) { @@ -515,7 +556,7 @@ Image::Image (AVFrame* frame) } Image::Image (shared_ptr other, bool aligned) - : libdcp::Image (other) + : dcp::Image (other) , _pixel_format (other->_pixel_format) , _aligned (aligned) { @@ -548,7 +589,7 @@ 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); @@ -591,7 +632,7 @@ Image::stride () const return _stride; } -libdcp::Size +dcp::Size Image::size () const { return _size; @@ -603,3 +644,44 @@ Image::aligned () const return _aligned; } +PositionImage +merge (list images) +{ + if (images.empty ()) { + return PositionImage (); + } + + 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); + } + + return PositionImage (merged, all.position ()); +} + +string +Image::digest () const +{ + MD5_CTX md5_context; + MD5_Init (&md5_context); + + for (int i = 0; i < components(); ++i) { + MD5_Update (&md5_context, data()[i], line_size()[i]); + } + + unsigned char digest[MD5_DIGEST_LENGTH]; + MD5_Final (digest, &md5_context); + + stringstream s; + for (int i = 0; i < MD5_DIGEST_LENGTH; ++i) { + s << std::hex << std::setfill('0') << std::setw(2) << ((int) digest[i]); + } + + return s.str (); +}