diff options
| -rw-r--r-- | video/codecs/mpeg.cpp | 107 | ||||
| -rw-r--r-- | video/codecs/mpeg.h | 98 | ||||
| -rw-r--r-- | video/module.mk | 5 |
3 files changed, 210 insertions, 0 deletions
diff --git a/video/codecs/mpeg.cpp b/video/codecs/mpeg.cpp new file mode 100644 index 0000000000..cb3c63fcfc --- /dev/null +++ b/video/codecs/mpeg.cpp @@ -0,0 +1,107 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "common/debug.h" +#include "common/stream.h" +#include "common/system.h" +#include "common/textconsole.h" +#include "graphics/surface.h" +#include "graphics/yuv_to_rgb.h" + +#include "video/codecs/mpeg.h" + +namespace Video { + +MPEGDecoder::MPEGDecoder() : Codec() { + _pixelFormat = g_system->getScreenFormat(); + _surface = 0; + + _mpegDecoder = mpeg2_init(); + + if (!_mpegDecoder) + error("Could not initialize libmpeg2"); + + _mpegInfo = mpeg2_info(_mpegDecoder); +} + +MPEGDecoder::~MPEGDecoder() { + mpeg2_close(_mpegDecoder); + + if (_surface) { + _surface->free(); + delete _surface; + } +} + +const Graphics::Surface *MPEGDecoder::decodeImage(Common::SeekableReadStream *stream) { + uint32 framePeriod; + decodePacket(stream, framePeriod); + return _surface; +} + +bool MPEGDecoder::decodePacket(Common::SeekableReadStream *packet, uint32 &framePeriod, Graphics::Surface *dst) { + // Decode as much as we can out of this packet + uint32 size = 0xFFFFFFFF; + mpeg2_state_t state; + bool foundFrame = false; + framePeriod = 0; + + do { + state = mpeg2_parse(_mpegDecoder); + + switch (state) { + case STATE_BUFFER: + size = packet->read(_buffer, BUFFER_SIZE); + mpeg2_buffer(_mpegDecoder, _buffer, _buffer + size); + break; + case STATE_SLICE: + case STATE_END: + if (_mpegInfo->display_fbuf) { + foundFrame = true; + const mpeg2_sequence_t *sequence = _mpegInfo->sequence; + + framePeriod += sequence->frame_period; + + if (!dst) { + // If no destination is specified, use our internal storage + if (!_surface) { + _surface = new Graphics::Surface(); + _surface->create(sequence->picture_width, sequence->picture_height, _pixelFormat); + } + + dst = _surface; + } + + YUVToRGBMan.convert420(dst, Graphics::YUVToRGBManager::kScaleITU, _mpegInfo->display_fbuf->buf[0], + _mpegInfo->display_fbuf->buf[1], _mpegInfo->display_fbuf->buf[2], sequence->picture_width, + sequence->picture_height, sequence->width, sequence->chroma_width); + } + break; + default: + break; + } + } while (size != 0); + + return foundFrame; +} + +} // End of namespace Video diff --git a/video/codecs/mpeg.h b/video/codecs/mpeg.h new file mode 100644 index 0000000000..0082844537 --- /dev/null +++ b/video/codecs/mpeg.h @@ -0,0 +1,98 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifdef USE_MPEG2 + +#ifndef VIDEO_CODECS_MPEG_H +#define VIDEO_CODECS_MPEG_H + +#include "video/codecs/codec.h" +#include "graphics/pixelformat.h" + +#if defined(__PLAYSTATION2__) + typedef uint8 uint8_t; + typedef uint16 uint16_t; + typedef uint32 uint32_t; +#elif defined(_WIN32_WCE) + typedef signed char int8_t; + typedef signed short int16_t; + typedef unsigned char uint8_t; + typedef unsigned short uint16_t; +#elif defined(_MSC_VER) + typedef signed char int8_t; + typedef signed short int16_t; + typedef unsigned char uint8_t; + typedef unsigned short uint16_t; + #if !defined(SDL_COMPILEDVERSION) || (SDL_COMPILEDVERSION < 1210) + typedef signed long int32_t; + typedef unsigned long uint32_t; + #endif +#else +# include <inttypes.h> +#endif + +extern "C" { + #include <mpeg2dec/mpeg2.h> +} + +namespace Common { +class SeekableReadStream; +} + +namespace Graphics { +struct Surface; +} + +namespace Video { + +// MPEG 1/2 video decoder + +class MPEGDecoder : public Codec { +public: + MPEGDecoder(); + ~MPEGDecoder(); + + // Codec interface + const Graphics::Surface *decodeImage(Common::SeekableReadStream *stream); + Graphics::PixelFormat getPixelFormat() const { return _pixelFormat; } + + // MPEGPSDecoder call + bool decodePacket(Common::SeekableReadStream *packet, uint32 &framePeriod, Graphics::Surface *dst = 0); + +private: + Graphics::PixelFormat _pixelFormat; + Graphics::Surface *_surface; + + enum { + BUFFER_SIZE = 4096 + }; + + byte _buffer[BUFFER_SIZE]; + mpeg2dec_t *_mpegDecoder; + const mpeg2_info_t *_mpegInfo; +}; + +} // End of namespace Video + +#endif // VIDEO_CODECS_MPEG_H + +#endif // USE_MPEG2 diff --git a/video/module.mk b/video/module.mk index 287e14ce18..a491947aaf 100644 --- a/video/module.mk +++ b/video/module.mk @@ -31,5 +31,10 @@ MODULE_OBJS += \ theora_decoder.o endif +ifdef USE_MPEG2 +MODULE_OBJS += \ + codecs/mpeg.o +endif + # Include common rules include $(srcdir)/rules.mk |