libmpcodecs/ae_lame.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <inttypes.h>
   4 #include <unistd.h>
   5 #include <string.h>
   6 #include <sys/types.h>
   7 #include "m_option.h"
   8 #include "mp_msg.h"
   9 #include "libmpdemux/aviheader.h"
  10 #include "libmpdemux/ms_hdr.h"
  11 #include "stream/stream.h"
  12 #include "libmpdemux/muxer.h"
  13 #include "help_mp.h"
  14 #include "ae_pcm.h"
  15 #include "libaf/af_format.h"
  16 #include "libmpdemux/mp3_hdr.h"
  17
  18 #undef CDECL
  19 #include <lame/lame.h>
  20
  21 lame_global_flags *lame;
  22 static int lame_param_quality=0; // best
  23 static int lame_param_algqual=5; // same as old default
  24 static int lame_param_vbr=vbr_default;
  25 static int lame_param_mode=-1; // unset
  26 static int lame_param_padding=-1; // unset
  27 static int lame_param_br=-1; // unset
  28 static int lame_param_ratio=-1; // unset
  29 static float lame_param_scale=-1; // unset
  30 static int lame_param_lowpassfreq = 0; //auto
  31 static int lame_param_highpassfreq = 0; //auto
  32 static int lame_param_free_format = 0; //disabled
  33 static int lame_param_br_min = 0; //not specified
  34 static int lame_param_br_max = 0; //not specified
  35
  36 #ifdef HAVE_MP3LAME_PRESET
  37 int lame_param_fast=0; // unset
  38 static char* lame_param_preset=NULL; // unset
  39 static int  lame_presets_set( lame_t gfp, int fast, int cbr, const char* preset_name );
  40 #endif
  41
  42
  43 m_option_t lameopts_conf[]={
  44         {"q", &lame_param_quality, CONF_TYPE_INT, CONF_RANGE, 0, 9, NULL},
  45         {"aq", &lame_param_algqual, CONF_TYPE_INT, CONF_RANGE, 0, 9, NULL},
  46         {"vbr", &lame_param_vbr, CONF_TYPE_INT, CONF_RANGE, 0, vbr_max_indicator, NULL},
  47         {"cbr", &lame_param_vbr, CONF_TYPE_FLAG, 0, 0, 0, NULL},
  48         {"abr", &lame_param_vbr, CONF_TYPE_FLAG, 0, 0, vbr_abr, NULL},
  49         {"mode", &lame_param_mode, CONF_TYPE_INT, CONF_RANGE, 0, MAX_INDICATOR, NULL},
  50         {"padding", &lame_param_padding, CONF_TYPE_INT, CONF_RANGE, 0, PAD_MAX_INDICATOR, NULL},
  51         {"br", &lame_param_br, CONF_TYPE_INT, CONF_RANGE, 0, 1024, NULL},
  52         {"ratio", &lame_param_ratio, CONF_TYPE_INT, CONF_RANGE, 0, 100, NULL},
  53         {"vol", &lame_param_scale, CONF_TYPE_FLOAT, CONF_RANGE, 0, 10, NULL},
  54         {"lowpassfreq",&lame_param_lowpassfreq, CONF_TYPE_INT, CONF_RANGE, -1, 48000,0},
  55         {"highpassfreq",&lame_param_highpassfreq, CONF_TYPE_INT, CONF_RANGE, -1, 48000,0},
  56         {"nofree", &lame_param_free_format, CONF_TYPE_FLAG, 0, 0, 0, NULL},
  57         {"free", &lame_param_free_format, CONF_TYPE_FLAG, 0, 0, 1, NULL},
  58         {"br_min", &lame_param_br_min, CONF_TYPE_INT, CONF_RANGE, 0, 1024, NULL},
  59         {"br_max", &lame_param_br_max, CONF_TYPE_INT, CONF_RANGE, 0, 1024, NULL},
  60 #ifdef HAVE_MP3LAME_PRESET
  61         {"fast", &lame_param_fast, CONF_TYPE_FLAG, 0, 0, 1, NULL},
  62         {"preset", &lame_param_preset, CONF_TYPE_STRING, 0, 0, 0, NULL},
  63 #else
  64         {"fast", "MPlayer was built without -lameopts fast support (requires libmp3lame >=3.92).\n", CONF_TYPE_PRINT, CONF_NOCFG, 0, 0, NULL},
  65         {"preset", "MPlayer was built without -lameopts preset support (requires libmp3lame >=3.92).\n", CONF_TYPE_PRINT, CONF_NOCFG, 0, 0, NULL},
  66 #endif
  67         {"help", MSGTR_MEncoderMP3LameHelp, CONF_TYPE_PRINT, CONF_NOCFG, 0, 0, NULL},
  68         {NULL, NULL, 0, 0, 0, 0, NULL}
  69 };
  70
  71
  72 static int bind_lame(audio_encoder_t *encoder, muxer_stream_t *mux_a)
  73 {
  74     mp_msg(MSGT_MENCODER, MSGL_INFO, MSGTR_MP3AudioSelected);
  75     mux_a->h.dwSampleSize=0; // VBR
  76     mux_a->h.dwRate=encoder->params.sample_rate;
  77     mux_a->h.dwScale=encoder->params.samples_per_frame; // samples/frame
  78     if(sizeof(MPEGLAYER3WAVEFORMAT)!=30) mp_msg(MSGT_MENCODER,MSGL_WARN,MSGTR_MP3WaveFormatSizeNot30,sizeof(MPEGLAYER3WAVEFORMAT));
  79     mux_a->wf=malloc(sizeof(MPEGLAYER3WAVEFORMAT)); // should be 30
  80     mux_a->wf->wFormatTag=0x55; // MP3
  81     mux_a->wf->nChannels= (lame_param_mode<0) ? encoder->params.channels : ((lame_param_mode==3) ? 1 : 2);
  82     mux_a->wf->nSamplesPerSec=mux_a->h.dwRate;
  83     if(! lame_param_vbr)
  84         mux_a->wf->nAvgBytesPerSec=lame_param_br * 125;
  85     else
  86         mux_a->wf->nAvgBytesPerSec=192000/8; // FIXME!
  87     mux_a->wf->nBlockAlign=encoder->params.samples_per_frame; // required for l3codeca.acm + WMP 6.4
  88     mux_a->wf->wBitsPerSample=0; //16;
  89     // from NaNdub:  (requires for l3codeca.acm)
  90     mux_a->wf->cbSize=12;
  91     ((MPEGLAYER3WAVEFORMAT*)(mux_a->wf))->wID=1;
  92     ((MPEGLAYER3WAVEFORMAT*)(mux_a->wf))->fdwFlags=2;
  93     ((MPEGLAYER3WAVEFORMAT*)(mux_a->wf))->nBlockSize=encoder->params.samples_per_frame; // ???
  94     ((MPEGLAYER3WAVEFORMAT*)(mux_a->wf))->nFramesPerBlock=1;
  95     ((MPEGLAYER3WAVEFORMAT*)(mux_a->wf))->nCodecDelay=0;
  96
  97     encoder->input_format = AF_FORMAT_S16_NE;
  98     encoder->min_buffer_size = 4608;
  99     encoder->max_buffer_size = mux_a->h.dwRate * mux_a->wf->nChannels * 2;
 100
 101     return 1;
 102 }
 103
 104 #define min(a, b) ((a) <= (b) ? (a) : (b))
 105
 106 static int get_frame_size(audio_encoder_t *encoder)
 107 {
 108     int sz;
 109     if(encoder->stream->buffer_len < 4)
 110         return 0;
 111     sz = mp_decode_mp3_header(encoder->stream->buffer);
 112     if(sz <= 0)
 113         return 0;
 114     return sz;
 115 }
 116
 117 static int encode_lame(audio_encoder_t *encoder, uint8_t *dest, void *src, int len, int max_size)
 118 {
 119     int n = 0;
 120     if(encoder->params.channels == 1)
 121         n = lame_encode_buffer(lame, (short *)src, (short *)src, len/2, dest, max_size);
 122     else
 123         n = lame_encode_buffer_interleaved(lame,(short *)src, len/4, dest, max_size);
 124
 125     return (n < 0 ? 0 : n);
 126 }
 127
 128
 129 static int close_lame(audio_encoder_t *encoder)
 130 {
 131     return 1;
 132 }
 133
 134 static void fixup(audio_encoder_t *encoder)
 135 {
 136     // fixup CBR mp3 audio header:
 137     if(!lame_param_vbr) {
 138         encoder->stream->h.dwSampleSize=1;
 139         ((MPEGLAYER3WAVEFORMAT*)(encoder->stream->wf))->nBlockSize=
 140             (encoder->stream->size+(encoder->stream->h.dwLength>>1))/encoder->stream->h.dwLength;
 141         encoder->stream->h.dwLength=encoder->stream->size;
 142         encoder->stream->h.dwRate=encoder->stream->wf->nAvgBytesPerSec;
 143         encoder->stream->h.dwScale=1;
 144         encoder->stream->wf->nBlockAlign=1;
 145         mp_msg(MSGT_MENCODER, MSGL_V, MSGTR_CBRAudioByterate,
 146             encoder->stream->h.dwRate,((MPEGLAYER3WAVEFORMAT*)(encoder->stream->wf))->nBlockSize);
 147     }
 148 }
 149
 150 int mpae_init_lame(audio_encoder_t *encoder)
 151 {
 152     encoder->params.bitrate = lame_param_br * 125;
 153     encoder->params.samples_per_frame = encoder->params.sample_rate < 32000 ? 576 : 1152;
 154     encoder->decode_buffer_size = 2304;
 155
 156     lame=lame_init();
 157     lame_set_bWriteVbrTag(lame,0);
 158     lame_set_in_samplerate(lame,encoder->params.sample_rate);
 159     //lame_set_in_samplerate(lame,sh_audio->samplerate); // if resampling done by lame
 160     lame_set_num_channels(lame,encoder->params.channels);
 161     lame_set_out_samplerate(lame,encoder->params.sample_rate);
 162     lame_set_quality(lame,lame_param_algqual); // 0 = best q
 163     if(lame_param_free_format) lame_set_free_format(lame,1);
 164     if(lame_param_vbr){  // VBR:
 165         lame_set_VBR(lame,lame_param_vbr); // vbr mode
 166         lame_set_VBR_q(lame,lame_param_quality); // 0 = best vbr q  5=~128k
 167         if(lame_param_br>0) lame_set_VBR_mean_bitrate_kbps(lame,lame_param_br);
 168         if(lame_param_br_min>0) lame_set_VBR_min_bitrate_kbps(lame,lame_param_br_min);
 169         if(lame_param_br_max>0) lame_set_VBR_max_bitrate_kbps(lame,lame_param_br_max);
 170     } else {    // CBR:
 171         if(lame_param_br>0) lame_set_brate(lame,lame_param_br);
 172     }
 173     if(lame_param_mode>=0) lame_set_mode(lame,lame_param_mode); // j-st
 174     if(lame_param_ratio>0) lame_set_compression_ratio(lame,lame_param_ratio);
 175     if(lame_param_scale>0) {
 176         mp_msg(MSGT_MENCODER, MSGL_V, MSGTR_SettingAudioInputGain, lame_param_scale);
 177         lame_set_scale(lame,lame_param_scale);
 178     }
 179     if(lame_param_lowpassfreq>=-1) lame_set_lowpassfreq(lame,lame_param_lowpassfreq);
 180     if(lame_param_highpassfreq>=-1) lame_set_highpassfreq(lame,lame_param_highpassfreq);
 181 #ifdef HAVE_MP3LAME_PRESET
 182     if(lame_param_preset != NULL) {
 183         mp_msg(MSGT_MENCODER, MSGL_V, MSGTR_LamePresetEquals,lame_param_preset);
 184         if(lame_presets_set(lame,lame_param_fast, (lame_param_vbr==0), lame_param_preset) < 0)
 185             return 0;
 186     }
 187 #endif
 188     if(lame_init_params(lame) == -1) {
 189         mp_msg(MSGT_MENCODER, MSGL_FATAL, MSGTR_LameCantInit);
 190         return 0;
 191     }
 192     if( mp_msg_test(MSGT_MENCODER,MSGL_V) ) {
 193         lame_print_config(lame);
 194         lame_print_internals(lame);
 195     }
 196
 197     encoder->bind = bind_lame;
 198     encoder->get_frame_size = get_frame_size;
 199     encoder->encode = encode_lame;
 200     encoder->fixup = fixup;
 201     encoder->close = close_lame;
 202     return 1;
 203 }
 204
 205 #ifdef HAVE_MP3LAME_PRESET
 206 /* lame_presets_set
 207    taken out of presets_set in lame-3.93.1/frontend/parse.c and modified */
 208 static int  lame_presets_set( lame_t gfp, int fast, int cbr, const char* preset_name )
 209 {
 210     int mono = 0;
 211
 212     if (strcmp(preset_name, "help") == 0) {
 213         mp_msg(MSGT_MENCODER, MSGL_FATAL, MSGTR_LameVersion, get_lame_version(), get_lame_url());
 214         mp_msg(MSGT_MENCODER, MSGL_FATAL, MSGTR_LamePresetsLongInfo);
 215         return -1;
 216     }
 217
 218     //aliases for compatibility with old presets
 219
 220     if (strcmp(preset_name, "phone") == 0) {
 221         preset_name = "16";
 222         mono = 1;
 223     }
 224     if ( (strcmp(preset_name, "phon+") == 0) ||
 225          (strcmp(preset_name, "lw") == 0) ||
 226          (strcmp(preset_name, "mw-eu") == 0) ||
 227          (strcmp(preset_name, "sw") == 0)) {
 228         preset_name = "24";
 229         mono = 1;
 230     }
 231     if (strcmp(preset_name, "mw-us") == 0) {
 232         preset_name = "40";
 233         mono = 1;
 234     }
 235     if (strcmp(preset_name, "voice") == 0) {
 236         preset_name = "56";
 237         mono = 1;
 238     }
 239     if (strcmp(preset_name, "fm") == 0) {
 240         preset_name = "112";
 241     }
 242     if ( (strcmp(preset_name, "radio") == 0) ||
 243          (strcmp(preset_name, "tape") == 0)) {
 244         preset_name = "112";
 245     }
 246     if (strcmp(preset_name, "hifi") == 0) {
 247         preset_name = "160";
 248     }
 249     if (strcmp(preset_name, "cd") == 0) {
 250         preset_name = "192";
 251     }
 252     if (strcmp(preset_name, "studio") == 0) {
 253         preset_name = "256";
 254     }
 255
 256 #ifdef HAVE_MP3LAME_PRESET_MEDIUM
 257     if (strcmp(preset_name, "medium") == 0) {
 258         if (fast > 0)
 259            lame_set_preset(gfp, MEDIUM_FAST);
 260         else
 261            lame_set_preset(gfp, MEDIUM);
 262
 263         return 0;
 264     }
 265 #endif
 266
 267     if (strcmp(preset_name, "standard") == 0) {
 268         if (fast > 0)
 269            lame_set_preset(gfp, STANDARD_FAST);
 270         else
 271            lame_set_preset(gfp, STANDARD);
 272
 273         return 0;
 274     }
 275
 276     else if (strcmp(preset_name, "extreme") == 0){
 277         if (fast > 0)
 278            lame_set_preset(gfp, EXTREME_FAST);
 279         else
 280            lame_set_preset(gfp, EXTREME);
 281
 282         return 0;
 283     }
 284
 285     else if (((strcmp(preset_name, "insane") == 0) ||
 286               (strcmp(preset_name, "320"   ) == 0))   && (fast < 1)) {
 287
 288         lame_set_preset(gfp, INSANE);
 289
 290         return 0;
 291     }
 292
 293     // Generic ABR Preset
 294     if (((atoi(preset_name)) > 0) &&  (fast < 1)) {
 295         if ((atoi(preset_name)) >= 8 && (atoi(preset_name)) <= 320){
 296             lame_set_preset(gfp, atoi(preset_name));
 297
 298             if (cbr == 1 )
 299                 lame_set_VBR(gfp, vbr_off);
 300
 301             if (mono == 1 ) {
 302                 lame_set_mode(gfp, MONO);
 303             }
 304
 305             return 0;
 306
 307         }
 308         else {
 309             mp_msg(MSGT_MENCODER, MSGL_FATAL, MSGTR_LameVersion, get_lame_version(), get_lame_url());
 310             mp_msg(MSGT_MENCODER, MSGL_FATAL, MSGTR_InvalidBitrateForLamePreset);
 311             return -1;
 312         }
 313     }
 314
 315     mp_msg(MSGT_MENCODER, MSGL_FATAL, MSGTR_LameVersion, get_lame_version(), get_lame_url());
 316     mp_msg(MSGT_MENCODER, MSGL_FATAL, MSGTR_InvalidLamePresetOptions);
 317     return -1;
 318 }
 319 #endif