2 Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/tiff_decoder.cc
21 * @brief A decoder which reads a numbered set of TIFF files, one per frame.
28 #include <boost/shared_ptr.hpp>
29 #include <boost/filesystem.hpp>
32 #include <libavformat/avformat.h>
35 #include "tiff_decoder.h"
36 #include "exceptions.h"
42 using namespace boost;
44 /** @param f Our Film.
46 * @param j Job that we are associated with, or 0.
47 * @param minimal true to do the bare minimum of work; just run through the content. Useful for acquiring
48 * accurate frame counts as quickly as possible. This generates no video or audio output.
49 * @param ignore_length Ignore the content's claimed length when computing progress.
51 TIFFDecoder::TIFFDecoder (boost::shared_ptr<Film> f, boost::shared_ptr<const Options> o, Job* j, bool minimal, bool ignore_length)
52 : Decoder (f, o, j, minimal, ignore_length)
54 string const dir = _film->content_path ();
56 if (!filesystem::is_directory (dir)) {
57 throw DecodeError ("TIFF content must be in a directory");
60 for (filesystem::directory_iterator i = filesystem::directory_iterator (dir); i != filesystem::directory_iterator(); ++i) {
61 /* Aah, the sweet smell of progress */
62 #if BOOST_FILESYSTEM_VERSION == 3
63 string const ext = filesystem::path(*i).extension().string();
64 string const l = filesystem::path(*i).leaf().generic_string();
66 string const ext = filesystem::path(*i).extension();
67 string const l = i->leaf ();
69 if (ext == ".tif" || ext == ".tiff") {
76 _iter = _files.begin ();
81 TIFFDecoder::frames_per_second () const
88 TIFFDecoder::native_size () const
90 if (_files.empty ()) {
91 throw DecodeError ("no TIFF files found");
94 TIFF* t = TIFFOpen (file_path (_files.front()).c_str (), "r");
96 throw DecodeError ("could not open TIFF file");
100 TIFFGetField (t, TIFFTAG_IMAGEWIDTH, &width);
102 TIFFGetField (t, TIFFTAG_IMAGELENGTH, &height);
104 return Size (width, height);
108 TIFFDecoder::audio_channels () const
115 TIFFDecoder::audio_sample_rate () const
121 TIFFDecoder::audio_sample_format () const
123 return AV_SAMPLE_FMT_NONE;
128 TIFFDecoder::audio_channel_layout () const
136 if (_iter == _files.end ()) {
140 TIFF* t = TIFFOpen (file_path (*_iter).c_str (), "r");
142 throw DecodeError ("could not open TIFF file");
146 TIFFGetField (t, TIFFTAG_IMAGEWIDTH, &width);
148 TIFFGetField (t, TIFFTAG_IMAGELENGTH, &height);
150 int const num_pixels = width * height;
151 uint32_t * raster = (uint32_t *) _TIFFmalloc (num_pixels * sizeof (uint32_t));
153 throw DecodeError ("could not allocate memory to decode TIFF file");
156 if (TIFFReadRGBAImage (t, width, height, raster, 0) < 0) {
157 throw DecodeError ("could not read TIFF data");
160 RGBFrameImage image (Size (width, height));
162 uint8_t* p = image.data()[0];
163 for (uint32_t y = 0; y < height; ++y) {
164 for (uint32_t x = 0; x < width; ++x) {
165 uint32_t const i = (height - y - 1) * width + x;
166 *p++ = raster[i] & 0xff;
167 *p++ = (raster[i] & 0xff00) >> 8;
168 *p++ = (raster[i] & 0xff0000) >> 16;
175 process_video (image.frame ());
181 /** @param file name within our content directory
182 * @return full path to the file
185 TIFFDecoder::file_path (string f) const
188 s << _film->content_path() << "/" << f;
189 return _film->file (s.str ());
193 TIFFDecoder::pixel_format () const
195 return PIX_FMT_RGB24;
199 TIFFDecoder::time_base_numerator () const
201 return dcp_frame_rate(_film->frames_per_second()).frames_per_second;
206 TIFFDecoder::time_base_denominator () const
212 TIFFDecoder::sample_aspect_ratio_numerator () const
219 TIFFDecoder::sample_aspect_ratio_denominator () const