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/*
Copyright (C) 2012 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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file src/tiff_decoder.cc
* @brief A decoder which reads a numbered set of TIFF files, one per frame.
*/
#include <vector>
#include <string>
#include <iostream>
#include <stdint.h>
#include <boost/shared_ptr.hpp>
#include <boost/filesystem.hpp>
#include <tiffio.h>
extern "C" {
#include <libavformat/avformat.h>
}
#include "util.h"
#include "tiff_decoder.h"
#include "exceptions.h"
#include "image.h"
#include "options.h"
#include "film.h"
using namespace std;
using namespace boost;
/** @param f Our Film.
* @param o Options.
* @param j Job that we are associated with, or 0.
* @param minimal true to do the bare minimum of work; just run through the content. Useful for acquiring
* accurate frame counts as quickly as possible. This generates no video or audio output.
* @param ignore_length Ignore the content's claimed length when computing progress.
*/
TIFFDecoder::TIFFDecoder (boost::shared_ptr<Film> f, boost::shared_ptr<const Options> o, Job* j, bool minimal, bool ignore_length)
: Decoder (f, o, j, minimal, ignore_length)
{
string const dir = _film->content_path ();
if (!filesystem::is_directory (dir)) {
throw DecodeError ("TIFF content must be in a directory");
}
for (filesystem::directory_iterator i = filesystem::directory_iterator (dir); i != filesystem::directory_iterator(); ++i) {
/* Aah, the sweet smell of progress */
#if BOOST_FILESYSTEM_VERSION == 3
string const ext = filesystem::path(*i).extension().string();
string const l = filesystem::path(*i).leaf().generic_string();
#else
string const ext = filesystem::path(*i).extension();
string const l = i->leaf ();
#endif
if (ext == ".tif" || ext == ".tiff") {
_files.push_back (l);
}
}
_files.sort ();
_iter = _files.begin ();
}
float
TIFFDecoder::frames_per_second () const
{
/* We don't know */
return 0;
}
Size
TIFFDecoder::native_size () const
{
if (_files.empty ()) {
throw DecodeError ("no TIFF files found");
}
TIFF* t = TIFFOpen (file_path (_files.front()).c_str (), "r");
if (t == 0) {
throw DecodeError ("could not open TIFF file");
}
uint32_t width;
TIFFGetField (t, TIFFTAG_IMAGEWIDTH, &width);
uint32_t height;
TIFFGetField (t, TIFFTAG_IMAGELENGTH, &height);
return Size (width, height);
}
int
TIFFDecoder::audio_channels () const
{
/* No audio */
return 0;
}
int
TIFFDecoder::audio_sample_rate () const
{
return 0;
}
AVSampleFormat
TIFFDecoder::audio_sample_format () const
{
return AV_SAMPLE_FMT_NONE;
}
int64_t
TIFFDecoder::audio_channel_layout () const
{
return 0;
}
bool
TIFFDecoder::do_pass ()
{
if (_iter == _files.end ()) {
return true;
}
TIFF* t = TIFFOpen (file_path (*_iter).c_str (), "r");
if (t == 0) {
throw DecodeError ("could not open TIFF file");
}
uint32_t width;
TIFFGetField (t, TIFFTAG_IMAGEWIDTH, &width);
uint32_t height;
TIFFGetField (t, TIFFTAG_IMAGELENGTH, &height);
int const num_pixels = width * height;
uint32_t * raster = (uint32_t *) _TIFFmalloc (num_pixels * sizeof (uint32_t));
if (raster == 0) {
throw DecodeError ("could not allocate memory to decode TIFF file");
}
if (TIFFReadRGBAImage (t, width, height, raster, 0) < 0) {
throw DecodeError ("could not read TIFF data");
}
RGBFrameImage image (Size (width, height));
uint8_t* p = image.data()[0];
for (uint32_t y = 0; y < height; ++y) {
for (uint32_t x = 0; x < width; ++x) {
uint32_t const i = (height - y - 1) * width + x;
*p++ = raster[i] & 0xff;
*p++ = (raster[i] & 0xff00) >> 8;
*p++ = (raster[i] & 0xff0000) >> 16;
}
}
_TIFFfree (raster);
TIFFClose (t);
process_video (image.frame ());
++_iter;
return false;
}
/** @param file name within our content directory
* @return full path to the file
*/
string
TIFFDecoder::file_path (string f) const
{
stringstream s;
s << _film->content_path() << "/" << f;
return _film->file (s.str ());
}
PixelFormat
TIFFDecoder::pixel_format () const
{
return PIX_FMT_RGB24;
}
int
TIFFDecoder::time_base_numerator () const
{
return rint (_film->frames_per_second());
}
int
TIFFDecoder::time_base_denominator () const
{
return 1;
}
int
TIFFDecoder::sample_aspect_ratio_numerator () const
{
/* XXX */
return 1;
}
int
TIFFDecoder::sample_aspect_ratio_denominator () const
{
/* XXX */
return 1;
}
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