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-rw-r--r--engines/sword25/fmv/theora_decoder.cpp492
1 files changed, 492 insertions, 0 deletions
diff --git a/engines/sword25/fmv/theora_decoder.cpp b/engines/sword25/fmv/theora_decoder.cpp
new file mode 100644
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+++ b/engines/sword25/fmv/theora_decoder.cpp
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+/* 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+/*
+ * Source is based on the player example from libvorbis package
+ *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE.
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.
+ *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009
+ * by the Xiph.Org Foundation and contributors http://www.xiph.org/
+ *
+ */
+
+#include "sword25/fmv/theora_decoder.h"
+#include "sword25/fmv/yuvtorgba.h"
+#include "common/system.h"
+#include "sound/decoders/raw.h"
+
+namespace Sword25 {
+
+#define AUDIOFD_FRAGSIZE 10240
+
+static double rint(double v) {
+ return floor(v + 0.5);
+}
+
+TheoraDecoder::TheoraDecoder(Audio::Mixer *mixer, Audio::Mixer::SoundType soundType) : _mixer(mixer) {
+ _fileStream = 0;
+ _surface = 0;
+
+ _theoraPacket = 0;
+ _vorbisPacket = 0;
+ _theoraDecode = 0;
+ _theoraSetup = 0;
+ _stateFlag = false;
+
+ _soundType = soundType;
+ _audStream = 0;
+ _audHandle = new Audio::SoundHandle();
+
+ ogg_sync_init(&_oggSync);
+
+ _curFrame = 0;
+ _audiobuf = (ogg_int16_t *)calloc(AUDIOFD_FRAGSIZE, sizeof(ogg_int16_t));
+
+ reset();
+}
+
+TheoraDecoder::~TheoraDecoder() {
+ close();
+ delete _fileStream;
+ delete _audHandle;
+ free(_audiobuf);
+}
+
+void TheoraDecoder::queuePage(ogg_page *page) {
+ if (_theoraPacket)
+ ogg_stream_pagein(&_theoraOut, page);
+
+ if (_vorbisPacket)
+ ogg_stream_pagein(&_vorbisOut, page);
+}
+
+int TheoraDecoder::bufferData() {
+ char *buffer = ogg_sync_buffer(&_oggSync, 4096);
+ int bytes = _fileStream->read(buffer, 4096);
+
+ ogg_sync_wrote(&_oggSync, bytes);
+
+ return bytes;
+}
+
+bool TheoraDecoder::load(Common::SeekableReadStream *stream) {
+ close();
+
+ _fileStream = stream;
+
+ // start up Ogg stream synchronization layer
+ ogg_sync_init(&_oggSync);
+
+ // init supporting Vorbis structures needed in header parsing
+ vorbis_info_init(&_vorbisInfo);
+ vorbis_comment_init(&_vorbisComment);
+
+ // init supporting Theora structures needed in header parsing
+ th_comment_init(&_theoraComment);
+ th_info_init(&_theoraInfo);
+
+ // Ogg file open; parse the headers
+ // Only interested in Vorbis/Theora streams
+ while (!_stateFlag) {
+ int ret = bufferData();
+
+ if (ret == 0)
+ break;
+
+ while (ogg_sync_pageout(&_oggSync, &_oggPage) > 0) {
+ ogg_stream_state test;
+
+ // is this a mandated initial header? If not, stop parsing
+ if (!ogg_page_bos(&_oggPage)) {
+ // don't leak the page; get it into the appropriate stream
+ queuePage(&_oggPage);
+ _stateFlag = true;
+ break;
+ }
+
+ ogg_stream_init(&test, ogg_page_serialno(&_oggPage));
+ ogg_stream_pagein(&test, &_oggPage);
+ ogg_stream_packetout(&test, &_oggPacket);
+
+ // identify the codec: try theora
+ if (!_theoraPacket && th_decode_headerin(&_theoraInfo, &_theoraComment, &_theoraSetup, &_oggPacket) >= 0) {
+ // it is theora
+ memcpy(&_theoraOut, &test, sizeof(test));
+ _theoraPacket = 1;
+ } else if (!_vorbisPacket && vorbis_synthesis_headerin(&_vorbisInfo, &_vorbisComment, &_oggPacket) >= 0) {
+ // it is vorbis
+ memcpy(&_vorbisOut, &test, sizeof(test));
+ _vorbisPacket = 1;
+ } else {
+ // whatever it is, we don't care about it
+ ogg_stream_clear(&test);
+ }
+ }
+ // fall through to non-bos page parsing
+ }
+
+ // we're expecting more header packets.
+ while ((_theoraPacket && _theoraPacket < 3) || (_vorbisPacket && _vorbisPacket < 3)) {
+ int ret;
+
+ // look for further theora headers
+ while (_theoraPacket && (_theoraPacket < 3) && (ret = ogg_stream_packetout(&_theoraOut, &_oggPacket))) {
+ if (ret < 0)
+ error("Error parsing Theora stream headers; corrupt stream?");
+
+ if (!th_decode_headerin(&_theoraInfo, &_theoraComment, &_theoraSetup, &_oggPacket))
+ error("Error parsing Theora stream headers; corrupt stream?");
+
+ _theoraPacket++;
+ }
+
+ // look for more vorbis header packets
+ while (_vorbisPacket && (_vorbisPacket < 3) && (ret = ogg_stream_packetout(&_vorbisOut, &_oggPacket))) {
+ if (ret < 0)
+ error("Error parsing Vorbis stream headers; corrupt stream?");
+
+ if (vorbis_synthesis_headerin(&_vorbisInfo, &_vorbisComment, &_oggPacket))
+ error("Error parsing Vorbis stream headers; corrupt stream?");
+
+ _vorbisPacket++;
+
+ if (_vorbisPacket == 3)
+ break;
+ }
+
+ // The header pages/packets will arrive before anything else we
+ // care about, or the stream is not obeying spec
+
+ if (ogg_sync_pageout(&_oggSync, &_oggPage) > 0) {
+ queuePage(&_oggPage); // demux into the appropriate stream
+ } else {
+ ret = bufferData(); // someone needs more data
+
+ if (ret == 0)
+ error("End of file while searching for codec headers.");
+ }
+ }
+
+ // and now we have it all. initialize decoders
+ if (_theoraPacket) {
+ _theoraDecode = th_decode_alloc(&_theoraInfo, _theoraSetup);
+ debugN(1, "Ogg logical stream %lx is Theora %dx%d %.02f fps",
+ _theoraOut.serialno, _theoraInfo.pic_width, _theoraInfo.pic_height,
+ (double)_theoraInfo.fps_numerator / _theoraInfo.fps_denominator);
+
+ switch (_theoraInfo.pixel_fmt) {
+ case TH_PF_420:
+ debug(1, " 4:2:0 video");
+ break;
+ case TH_PF_422:
+ debug(1, " 4:2:2 video");
+ break;
+ case TH_PF_444:
+ debug(1, " 4:4:4 video");
+ break;
+ case TH_PF_RSVD:
+ default:
+ debug(1, " video\n (UNKNOWN Chroma sampling!)");
+ break;
+ }
+
+ if (_theoraInfo.pic_width != _theoraInfo.frame_width || _theoraInfo.pic_height != _theoraInfo.frame_height)
+ debug(1, " Frame content is %dx%d with offset (%d,%d).",
+ _theoraInfo.frame_width, _theoraInfo.frame_height, _theoraInfo.pic_x, _theoraInfo.pic_y);
+
+ switch (_theoraInfo.colorspace){
+ case TH_CS_UNSPECIFIED:
+ /* nothing to report */
+ break;;
+ case TH_CS_ITU_REC_470M:
+ debug(1, " encoder specified ITU Rec 470M (NTSC) color.");
+ break;
+ case TH_CS_ITU_REC_470BG:
+ debug(1, " encoder specified ITU Rec 470BG (PAL) color.");
+ break;
+ default:
+ debug(1, "warning: encoder specified unknown colorspace (%d).", _theoraInfo.colorspace);
+ break;
+ }
+
+ debug(1, "Encoded by %s", _theoraComment.vendor);
+ if (_theoraComment.comments) {
+ debug(1, "theora comment header:");
+ for (int i = 0; i < _theoraComment.comments; i++) {
+ if (_theoraComment.user_comments[i]) {
+ int len = _theoraComment.comment_lengths[i];
+ char *value = (char *)malloc(len + 1);
+ memcpy(value, _theoraComment.user_comments[i], len);
+ value[len] = '\0';
+ debug(1, "\t%s", value);
+ free(value);
+ }
+ }
+ }
+
+ th_decode_ctl(_theoraDecode, TH_DECCTL_GET_PPLEVEL_MAX, &_ppLevelMax, sizeof(_ppLevelMax));
+ _ppLevel = _ppLevelMax;
+ th_decode_ctl(_theoraDecode, TH_DECCTL_SET_PPLEVEL, &_ppLevel, sizeof(_ppLevel));
+ _ppInc = 0;
+ } else {
+ // tear down the partial theora setup
+ th_info_clear(&_theoraInfo);
+ th_comment_clear(&_theoraComment);
+ }
+
+ th_setup_free(_theoraSetup);
+ _theoraSetup = 0;
+
+ if (_vorbisPacket) {
+ vorbis_synthesis_init(&_vorbisDSP, &_vorbisInfo);
+ vorbis_block_init(&_vorbisDSP, &_vorbisBlock);
+ debug(3, "Ogg logical stream %lx is Vorbis %d channel %ld Hz audio.",
+ _vorbisOut.serialno, _vorbisInfo.channels, _vorbisInfo.rate);
+ } else {
+ // tear down the partial vorbis setup
+ vorbis_info_clear(&_vorbisInfo);
+ vorbis_comment_clear(&_vorbisComment);
+ }
+
+ // open audio
+ if (_vorbisPacket) {
+ _audStream = createAudioStream();
+ if (_audStream && _mixer)
+ _mixer->playStream(_soundType, _audHandle, _audStream);
+ }
+
+ _surface = new Graphics::Surface();
+
+ _surface->create(_theoraInfo.frame_width, _theoraInfo.frame_height, 4);
+
+ return true;
+}
+
+void TheoraDecoder::close() {
+ if (_vorbisPacket) {
+ ogg_stream_clear(&_vorbisOut);
+ vorbis_block_clear(&_vorbisBlock);
+ vorbis_dsp_clear(&_vorbisDSP);
+ vorbis_comment_clear(&_vorbisComment);
+ vorbis_info_clear(&_vorbisInfo);
+
+ if (_mixer)
+ _mixer->stopHandle(*_audHandle);
+ _audStream = 0;
+ _vorbisPacket = false;
+ }
+ if (_theoraPacket) {
+ ogg_stream_clear(&_theoraOut);
+ th_decode_free(_theoraDecode);
+ th_comment_clear(&_theoraComment);
+ th_info_clear(&_theoraInfo);
+ _theoraDecode = 0;
+ _theoraPacket = false;
+ }
+
+ if (!_fileStream)
+ return;
+
+ ogg_sync_clear(&_oggSync);
+
+ delete _fileStream;
+ _fileStream = 0;
+
+ _surface->free();
+ delete _surface;
+ _surface = 0;
+
+ reset();
+}
+
+Graphics::Surface *TheoraDecoder::decodeNextFrame() {
+ int i, j;
+
+// _stateFlag = false; // playback has not begun
+
+ // we want a video and audio frame ready to go at all times. If
+ // we have to buffer incoming, buffer the compressed data (ie, let
+ // ogg do the buffering)
+ while (_vorbisPacket && !_audiobufReady) {
+ int ret;
+ float **pcm;
+
+ // if there's pending, decoded audio, grab it
+ if ((ret = vorbis_synthesis_pcmout(&_vorbisDSP, &pcm)) > 0) {
+ int count = _audiobufFill / 2;
+ int maxsamples = (AUDIOFD_FRAGSIZE - _audiobufFill) / 2 / _vorbisInfo.channels;
+ for (i = 0; i < ret && i < maxsamples; i++)
+ for (j = 0; j < _vorbisInfo.channels; j++) {
+ int val = CLIP((int)rint(pcm[j][i] * 32767.f), -32768, 32768);
+ _audiobuf[count++] = val;
+ }
+
+ vorbis_synthesis_read(&_vorbisDSP, i);
+ _audiobufFill += i * _vorbisInfo.channels * 2;
+
+ if (_audiobufFill == AUDIOFD_FRAGSIZE)
+ _audiobufReady = true;
+
+ if (_vorbisDSP.granulepos >= 0)
+ _audiobufGranulePos = _vorbisDSP.granulepos - ret + i;
+ else
+ _audiobufGranulePos += i;
+ } else {
+
+ // no pending audio; is there a pending packet to decode?
+ if (ogg_stream_packetout(&_vorbisOut, &_oggPacket) > 0) {
+ if (vorbis_synthesis(&_vorbisBlock, &_oggPacket) == 0) // test for success!
+ vorbis_synthesis_blockin(&_vorbisDSP, &_vorbisBlock);
+ } else // we need more data; break out to suck in another page
+ break;
+ }
+ }
+
+ while (_theoraPacket && !_videobufReady) {
+ // theora is one in, one out...
+ if (ogg_stream_packetout(&_theoraOut, &_oggPacket) > 0) {
+
+ if (_ppInc) {
+ _ppLevel += _ppInc;
+ th_decode_ctl(_theoraDecode, TH_DECCTL_SET_PPLEVEL, &_ppLevel, sizeof(_ppLevel));
+ _ppInc = 0;
+ }
+ // HACK: This should be set after a seek or a gap, but we might not have
+ // a granulepos for the first packet (we only have them for the last
+ // packet on a page), so we just set it as often as we get it.
+ // To do this right, we should back-track from the last packet on the
+ // page and compute the correct granulepos for the first packet after
+ // a seek or a gap.
+ if (_oggPacket.granulepos >= 0) {
+ th_decode_ctl(_theoraDecode, TH_DECCTL_SET_GRANPOS, &_oggPacket.granulepos, sizeof(_oggPacket.granulepos));
+ }
+ if (th_decode_packetin(_theoraDecode, &_oggPacket, &_videobufGranulePos) == 0) {
+ _videobufTime = th_granule_time(_theoraDecode, _videobufGranulePos);
+ _curFrame++;
+
+ _videobufReady = true;
+ }
+ } else
+ break;
+ }
+
+ if (!_videobufReady && !_audiobufReady && _fileStream->eos()) {
+ close();
+ return _surface;
+ }
+
+ if (!_videobufReady || !_audiobufReady) {
+ // no data yet for somebody. Grab another page
+ bufferData();
+ while (ogg_sync_pageout(&_oggSync, &_oggPage) > 0) {
+ queuePage(&_oggPage);
+ }
+ }
+
+ // If playback has begun, top audio buffer off immediately.
+/* FIXME: This is currently crashing
+ if (_stateFlag) {
+ _audStream->queueBuffer((byte *)_audiobuf, AUDIOFD_FRAGSIZE, DisposeAfterUse::NO, Audio::FLAG_16BITS | Audio::FLAG_LITTLE_ENDIAN | Audio::FLAG_STEREO);
+ }
+*/
+
+ // are we at or past time for this video frame?
+ if (_stateFlag && _videobufReady) {
+ th_ycbcr_buffer yuv;
+
+ th_decode_ycbcr_out(_theoraDecode, yuv);
+
+ // Convert YUV data to RGB data
+ YUVtoBGRA::translate(yuv, _theoraInfo, (byte *)_surface->getBasePtr(0, 0), _surface->pitch * _surface->h);
+
+ switch (_theoraInfo.pixel_fmt) {
+ case TH_PF_420:
+ break;
+ case TH_PF_422:
+ break;
+ case TH_PF_444:
+ break;
+ default:
+ break;
+ }
+
+ _videobufReady = false;
+ }
+
+ // if our buffers either don't exist or are ready to go,
+ // we can begin playback
+ if ((!_theoraPacket || _videobufReady) &&
+ (!_vorbisPacket || _audiobufReady))
+ _stateFlag = true;
+
+ // same if we've run out of input
+ if (_fileStream->eos())
+ _stateFlag = true;
+
+ return _surface;
+}
+
+void TheoraDecoder::reset() {
+ VideoDecoder::reset();
+
+ if (_fileStream)
+ _fileStream->seek(0);
+
+ _videobufReady = false;
+ _videobufGranulePos = -1;
+ _videobufTime = 0;
+
+ _audiobufFill = 0;
+ _audiobufReady = false;
+ _audiobufGranulePos = 0;
+
+ _curFrame = 0;
+
+ _theoraPacket = 0;
+ _vorbisPacket = 0;
+ _stateFlag = false;
+}
+
+bool TheoraDecoder::endOfVideo() const {
+ return !isVideoLoaded();
+}
+
+
+uint32 TheoraDecoder::getElapsedTime() const {
+ if (_audStream && _mixer)
+ return _mixer->getSoundElapsedTime(*_audHandle);
+
+ return VideoDecoder::getElapsedTime();
+}
+
+Audio::QueuingAudioStream *TheoraDecoder::createAudioStream() {
+ return Audio::makeQueuingAudioStream(_vorbisInfo.rate, _vorbisInfo.channels);
+}
+
+} // End of namespace Sword25
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