aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorMatthew Hoops2013-06-19 23:59:04 -0400
committerMatthew Hoops2013-06-19 23:59:04 -0400
commit36bc47df446f1580edf15a407228579291196b4a (patch)
tree90cecbe1dabd4fe369b78d4b3382ee35fae516bf
parente5e467f5a1dffde7f4371a7c585351188677f746 (diff)
downloadscummvm-rg350-36bc47df446f1580edf15a407228579291196b4a.tar.gz
scummvm-rg350-36bc47df446f1580edf15a407228579291196b4a.tar.bz2
scummvm-rg350-36bc47df446f1580edf15a407228579291196b4a.zip
VIDEO: Add an MPEG 1/2 decoder
-rw-r--r--video/codecs/mpeg.cpp107
-rw-r--r--video/codecs/mpeg.h98
-rw-r--r--video/module.mk5
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