1 /* GemRB - Infinity Engine Emulator
2 * Copyright (C) 2003 The GemRB Project
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *
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.
13 *
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17 *
18 *
19 */
20
21 #include "MVEPlayer.h"
22
23 #include "ie_types.h"
24
25 #include "Audio.h"
26 #include "Interface.h"
27 #include "Palette.h"
28 #include "Variables.h"
29 #include "Video.h"
30
31 #include <cassert>
32 #include <cstdio>
33
34 using namespace GemRB;
35
36 static const char MVESignature[] = "Interplay MVE File\x1A";
37 static const int MVE_SIGNATURE_LEN = 19;
38
MVEPlay(void)39 MVEPlay::MVEPlay(void)
40 : decoder(this)
41 {
42 video = core->GetVideoDriver();
43 validVideo = false;
44 vidBuf = NULL;
45 g_palette = new Palette();
46
47 // these colors don't change
48 g_palette->col[0] = ColorBlack;
49 //Set color 255 to be our subtitle color
50 g_palette->col[255] = Color(50,50,50,255);
51 }
52
~MVEPlay(void)53 MVEPlay::~MVEPlay(void)
54 {
55 }
56
Open(DataStream * stream)57 bool MVEPlay::Open(DataStream* stream)
58 {
59 str = stream;
60 validVideo = false;
61
62 char Signature[MVE_SIGNATURE_LEN];
63 str->Read( Signature, MVE_SIGNATURE_LEN );
64 if (memcmp( Signature, MVESignature, MVE_SIGNATURE_LEN ) != 0) {
65 return false;
66 }
67
68 str->Seek( 0, GEM_STREAM_START );
69
70 validVideo = decoder.start_playback();
71 return validVideo;
72 }
73
DecodeFrame(VideoBuffer & buf)74 bool MVEPlay::DecodeFrame(VideoBuffer& buf)
75 {
76 vidBuf = &buf;
77 ++framePos;
78 return (validVideo && decoder.next_frame());
79 }
80
fileRead(void * buf,unsigned int count)81 unsigned int MVEPlay::fileRead(void* buf, unsigned int count)
82 {
83 unsigned numread;
84
85 numread = str->Read( buf, count );
86 return ( numread == count );
87 }
88
showFrame(const unsigned char * buf,unsigned int bufw,unsigned int bufh)89 void MVEPlay::showFrame(const unsigned char* buf, unsigned int bufw, unsigned int bufh)
90 {
91 if (vidBuf == NULL) {
92 Log(WARNING, "MVEPlayer", "attempting to decode a frame without a video buffer (most likely during init).");
93 return;
94 }
95 Size s = vidBuf->Size();
96 int dest_x = unsigned(s.w - bufw) >> 1;
97 int dest_y = unsigned(s.h - bufh) >> 1;
98 vidBuf->CopyPixels(Region(dest_x, dest_y, bufw, bufh), buf, NULL, g_palette.get());
99 }
100
setPalette(unsigned char * p,unsigned start,unsigned count)101 void MVEPlay::setPalette(unsigned char* p, unsigned start, unsigned count)
102 {
103 p = p + (start * 3);
104 for (unsigned int i = start; i < start+count; i++) {
105 g_palette->col[i].r = ( *p++ ) << 2;
106 g_palette->col[i].g = ( *p++ ) << 2;
107 g_palette->col[i].b = ( *p++ ) << 2;
108 g_palette->col[i].a = 0xff;
109 }
110 }
111
setAudioStream()112 int MVEPlay::setAudioStream()
113 {
114 ieDword volume ;
115 core->GetDictionary()->Lookup( "Volume Movie", volume) ;
116 int source = core->GetAudioDrv()->SetupNewStream(0, 0, 0, volume, false, false) ;
117 return source;
118 }
119
freeAudioStream(int stream)120 void MVEPlay::freeAudioStream(int stream)
121 {
122 if (stream > -1)
123 core->GetAudioDrv()->ReleaseStream(stream, true);
124 }
125
queueBuffer(int stream,unsigned short bits,int channels,short * memory,int size,int samplerate)126 void MVEPlay::queueBuffer(int stream, unsigned short bits,
127 int channels, short* memory,
128 int size, int samplerate)
129 {
130 if (stream > -1)
131 core->GetAudioDrv()->QueueBuffer(stream, bits, channels, memory, size, samplerate) ;
132 }
133
134
135 #include "plugindef.h"
136
137 GEMRB_PLUGIN(0x218963DC, "MVE Video Player")
138 PLUGIN_IE_RESOURCE(MVEPlay, "mve", (ieWord)IE_MVE_CLASS_ID)
139 END_PLUGIN()
140