3 SWF Sound handling routines
5 Extension module for the rfxswf library.
6 Part of the swftools package.
8 Copyright (c) 2001, 2002 Matthias Kramm <kramm@quiss.org>
10 This file is distributed under the GPL, see file COPYING for details
14 #ifndef RFXSWF_DISABLESOUND
16 #include "../rfxswf.h"
20 CodecInitOut * init = 0;
21 void swf_SetSoundStreamHead(TAG*tag, U16 avgnumsamples)
23 U8 playbackrate = 3; // 0 = 5.5 Khz, 1 = 11 Khz, 2 = 22 Khz, 3 = 44 Khz
24 U8 playbacksize = 1; // 0 = 8 bit, 1 = 16 bit
25 U8 playbacktype = 0; // 0 = mono, 1 = stereo
26 U8 compression = 2; // 0 = raw, 1 = ADPCM, 2 = mp3, 3 = raw le, 6 = nellymoser
27 U8 rate = 3; // 0 = 5.5 Khz, 1 = 11 Khz, 2 = 22 Khz, 3 = 44 Khz
28 U8 size = 1; // 0 = 8 bit, 1 = 16 bit
29 U8 type = 0; // 0 = mono, 1 = stereo
32 memset(¶ms, 0, sizeof(params));
33 params.frequency = 44100; //48000, 44100 or 32000
34 params.mode = 3; //0 = Stereo, 2 = Dual Channel, 3 = Mono
35 params.emphasis = 0; //0 = None, 1 = 50/15 microsec, 3 = CCITT J.17
36 params.bitrate = 128; //default is 128 (64 for mono)
37 init = codecInit(¶ms);
39 swf_SetU8(tag,(playbackrate<<2)|(playbacksize<<1)|playbacktype);
40 swf_SetU8(tag,(compression<<4)|(rate<<2)|(size<<1)|type);
41 swf_SetU16(tag,avgnumsamples);
43 printf("numSamples:%d\n",init->nSamples);
44 printf("bufferSize:%d\n",init->bufferSize);
47 void swf_SetSoundStreamBlock(TAG*tag, S16*samples, int numsamples, char first)
52 buf = malloc(init->bufferSize);
56 len = codecEncodeChunk (numsamples, samples, buf);
57 len += codecFlush (&buf[len]);
58 len += codecExit (&buf[len]);
61 swf_SetU16(tag, numsamples); // number of samples
62 swf_SetU16(tag, 0); // seek
64 swf_SetBlock(tag, buf, len);
72 #include "../lame/lame.h"
74 /* TODO: find a way to set these from the outside */
75 int swf_mp3_samplerate = 44100;
76 int swf_mp3_channels = 1;
78 static lame_global_flags*lame_flags;
80 static void initlame(unsigned char*buf, int bufsize)
82 lame_flags = lame_init();
84 lame_set_in_samplerate(lame_flags, swf_mp3_samplerate);
85 lame_set_num_channels(lame_flags, swf_mp3_channels);
86 lame_set_scale(lame_flags, 0);
88 // MPEG1 32, 44.1, 48khz
89 // MPEG2 16, 22.05, 24
90 // MPEG2.5 8, 11.025, 12
91 // (not used by decoding routines)
92 lame_set_out_samplerate(lame_flags, 11025);
94 lame_set_quality(lame_flags, 0);
95 lame_set_mode(lame_flags, MONO/*3*/);
96 //lame_set_compression_ratio(lame_flags, 11.025);
97 lame_set_bWriteVbrTag(lame_flags, 0);
99 lame_init_params(lame_flags);
100 lame_init_bitstream(lame_flags);
102 /* The first two flush calls to lame always fail, for
103 some reason. Do them here where they cause no damage. */
104 lame_encode_flush_nogap(lame_flags, buf, bufsize);
105 //printf("init:flush_nogap():%d\n", len);
106 lame_encode_flush(lame_flags, buf, bufsize);
107 //printf("init:flush():%d\n", len);
110 void swf_SetSoundStreamHead(TAG*tag, int avgnumsamples)
112 unsigned char buf[4096];
113 int bufsize = 1152*2;
115 short int samples[1152*2];
117 U8 playbackrate = 1; // 0 = 5.5 Khz, 1 = 11 Khz, 2 = 22 Khz, 3 = 44 Khz
118 U8 playbacksize = 1; // 0 = 8 bit, 1 = 16 bit
119 U8 playbacktype = 0; // 0 = mono, 1 = stereo
120 U8 compression = 2; // 0 = raw, 1 = ADPCM, 2 = mp3, 3 = raw le, 6 = nellymoser
121 U8 rate = 1; // 0 = 5.5 Khz, 1 = 11 Khz, 2 = 22 Khz, 3 = 44 Khz
122 U8 size = 1; // 0 = 8 bit, 1 = 16 bit
123 U8 type = 0; // 0 = mono, 1 = stereo
125 memset(samples,0,sizeof(samples));
127 initlame(buf, bufsize);
129 swf_SetU8(tag,(playbackrate<<2)|(playbacksize<<1)|playbacktype);
130 swf_SetU8(tag,(compression<<4)|(rate<<2)|(size<<1)|type);
131 swf_SetU16(tag,avgnumsamples);
134 void swf_SetSoundStreamBlock(TAG*tag, S16*samples, int seek, char first)
137 int oldlen=0,len = 0;
139 int numsamples = 1152*2;
141 buf = malloc(bufsize);
146 int fs = lame_get_framesize(lame_flags);
147 //printf("framesize:%d\n", fs);
148 swf_SetU16(tag, fs); // samples per mp3 frame
149 swf_SetU16(tag, seek); // seek
152 len += lame_encode_buffer(lame_flags, samples, samples, numsamples, &buf[len], bufsize-len);
153 //printf("block: %d (+%d)\n", len, len-oldlen);
156 len += lame_encode_flush_nogap(lame_flags, &buf[len], bufsize-len);
157 //printf("flush: %d (+%d)\n", len, len-oldlen);
160 swf_SetBlock(tag, buf, len);
162 /* len += lame_encode_flush(lame_flags, &buf[len], bufsize-len);
163 printf("flush! %d (+%d)\n", len, len-oldlen);*/
168 void swf_SetSoundStreamEnd(TAG*tag)
170 lame_close (lame_flags);
173 void swf_SetSoundDefine(TAG*tag, S16*samples, int num)
176 int oldlen=0,len = 0;
178 int blocksize = 1152*2;
182 U8 compression = 2; // 0 = raw, 1 = ADPCM, 2 = mp3, 3 = raw le, 6 = nellymoser
183 U8 rate = 1; // 0 = 5.5 Khz, 1 = 11 Khz, 2 = 22 Khz, 3 = 44 Khz
184 U8 size = 1; // 0 = 8 bit, 1 = 16 bit
185 U8 type = 0; // 0 = mono, 1 = stereo
187 blocks = num / (blocksize);
189 swf_SetU8(tag,(compression<<4)|(rate<<2)|(size<<1)|type);
190 swf_SetU32(tag,blocks*blocksize);
192 buf = malloc(bufsize);
196 initlame(buf, bufsize);
198 swf_SetU16(tag, 0); //delayseek
199 for(t=0;t<blocks;t++) {
202 pos= &samples[t*blocksize];
203 len += lame_encode_buffer(lame_flags, pos, pos, blocksize, &buf[len], bufsize-len);
204 len += lame_encode_flush_nogap(lame_flags, &buf[len], bufsize-len);
205 swf_SetBlock(tag, buf, len);
212 #define SOUNDINFO_STOP 32
213 #define SOUNDINFO_NOMULTIPLE 16
214 #define SOUNDINFO_HASENVELOPE 8
215 #define SOUNDINFO_HASLOOPS 4
216 #define SOUNDINFO_HASOUTPOINT 2
217 #define SOUNDINFO_HASINPOINT 1
219 void swf_SetSoundInfo(TAG*tag, SOUNDINFO*info)
221 U8 flags = (info->stop?SOUNDINFO_STOP:0)
222 |(info->multiple?SOUNDINFO_NOMULTIPLE:0)
223 |(info->envelopes?SOUNDINFO_HASENVELOPE:0)
224 |(info->loops?SOUNDINFO_HASLOOPS:0)
225 |(info->outpoint?SOUNDINFO_HASOUTPOINT:0)
226 |(info->inpoint?SOUNDINFO_HASINPOINT:0);
227 swf_SetU8(tag, flags);
228 if(flags&SOUNDINFO_HASINPOINT)
229 swf_SetU32(tag, info->inpoint);
230 if(flags&SOUNDINFO_HASOUTPOINT)
231 swf_SetU32(tag, info->outpoint);
232 if(flags&SOUNDINFO_HASLOOPS)
233 swf_SetU16(tag, info->loops);
234 if(flags&SOUNDINFO_HASENVELOPE) {
236 swf_SetU8(tag, info->envelopes);
237 for(t=0;t<info->envelopes;t++) {
238 swf_SetU32(tag, info->pos[t]);
239 swf_SetU16(tag, info->left[t]);
240 swf_SetU16(tag, info->right[t]);
247 #endif // RFXSWF_DISABLESOUND