git.sesse.net Git - mlt/blob - src/modules/opengl/mlt_movit_input.cpp

   1 /*
   2  * mlt_movit_input.cpp
   3  * Copyright (C) 2013 Dan Dennedy <dan@dennedy.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software Foundation,
  17  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "mlt_movit_input.h"
  21 #include "fbo_input.h"
  22
  23 MltInput::MltInput(unsigned width, unsigned height)
  24         : m_width(width)
  25         , m_height(height)
  26         , output_linear_gamma(false)
  27         , needs_mipmaps(false)
  28         , input(0)
  29         , isRGB(true)
  30 {
  31         register_int("output_linear_gamma", &output_linear_gamma);
  32         register_int("needs_mipmaps", &needs_mipmaps);
  33 }
  34
  35 MltInput::~MltInput()
  36 {
  37         delete input;
  38 }
  39
  40 std::string MltInput::output_fragment_shader()
  41 {
  42         assert(input);
  43         return input->output_fragment_shader();
  44 }
  45
  46 void MltInput::set_gl_state(GLuint glsl_program_num, const std::string& prefix, unsigned *sampler_num)
  47 {
  48         assert(input);
  49         input->set_gl_state(glsl_program_num, prefix, sampler_num);
  50 }
  51
  52 Effect::AlphaHandling MltInput::alpha_handling() const
  53 {
  54         assert(input);
  55         return input->alpha_handling();
  56 }
  57
  58 void MltInput::finalize()
  59 {
  60         assert(input);
  61         bool ok = input->set_int("output_linear_gamma", output_linear_gamma);
  62         ok |= input->set_int("needs_mipmaps", needs_mipmaps);
  63         assert(ok);
  64         input->finalize();
  65 }
  66
  67 bool MltInput::can_output_linear_gamma() const
  68 {
  69         assert(input);
  70         return input->can_output_linear_gamma();
  71 }
  72
  73 Colorspace MltInput::get_color_space() const
  74 {
  75         assert(input);
  76         return input->get_color_space();
  77 }
  78 GammaCurve MltInput::get_gamma_curve() const
  79 {
  80         assert(input);
  81         return input->get_gamma_curve();
  82 }
  83
  84 void MltInput::useFlatInput(EffectChain* chain, MovitPixelFormat pix_fmt, unsigned width, unsigned height)
  85 {
  86         if (!input) {
  87                 m_width = width;
  88                 m_height = height;
  89                 ImageFormat image_format;
  90                 image_format.color_space = COLORSPACE_sRGB;
  91                 image_format.gamma_curve = GAMMA_sRGB;
  92                 input = new FlatInput(image_format, pix_fmt, GL_UNSIGNED_BYTE, width, height);
  93                 chain->add_output(image_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
  94                 chain->set_dither_bits(8);
  95         }
  96 }
  97
  98 void MltInput::useYCbCrInput(EffectChain* chain, const ImageFormat& image_format, const YCbCrFormat& ycbcr_format, unsigned width, unsigned height)
  99 {
 100         if (!input) {
 101                 m_width = width;
 102                 m_height = height;
 103                 input = new YCbCrInput(image_format, ycbcr_format, width, height);
 104                 ImageFormat output_format;
 105                 output_format.color_space = COLORSPACE_sRGB;
 106                 output_format.gamma_curve = GAMMA_sRGB;
 107                 chain->add_output(output_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
 108                 chain->set_dither_bits(8);
 109                 isRGB = false;
 110                 m_ycbcr_format = ycbcr_format;
 111         }
 112 }
 113
 114 void MltInput::useFBOInput(EffectChain *chain, GLuint texture)
 115 {
 116         if (!input) {
 117                 FBOInput* fboInput = new FBOInput(m_width, m_height);
 118                 input = fboInput;
 119                 fboInput->set_texture(texture);
 120         }
 121 }
 122
 123 void MltInput::set_pixel_data(const unsigned char* data)
 124 {
 125         assert(input);
 126         if (isRGB) {
 127                 FlatInput* flat = (FlatInput*) input;
 128                 flat->set_pixel_data(data);
 129         } else {
 130                 YCbCrInput* ycbcr = (YCbCrInput*) input;
 131                 ycbcr->set_pixel_data(0, data);
 132                 ycbcr->set_pixel_data(1, &data[m_width * m_height]);
 133                 ycbcr->set_pixel_data(2, &data[m_width * m_height + (m_width / m_ycbcr_format.chroma_subsampling_x * m_height / m_ycbcr_format.chroma_subsampling_y)]);
 134         }
 135 }