libmpcodecs/ae_toolame.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 "libaf/af_format.h"
  11 #include "libmpdemux/ms_hdr.h"
  12 #include "stream/stream.h"
  13 #include "libmpdemux/muxer.h"
  14 #include "ae_toolame.h"
  15 #include "libmpdemux/mp3_hdr.h"
  16
  17
  18 static int
  19     param_bitrate = 192,
  20     param_psy = 3,
  21     param_maxvbr = 0,
  22     param_errprot = 0,
  23     param_debug = 0;
  24
  25 static float param_vbr = 0;
  26 static char *param_mode = "stereo";
  27
  28 m_option_t toolameopts_conf[] = {
  29         {"br", &param_bitrate, CONF_TYPE_INT, 0, 0, 0, NULL},
  30         {"mode", &param_mode, CONF_TYPE_STRING, 0, 0, 0, NULL},
  31         {"psy", &param_psy, CONF_TYPE_INT, CONF_RANGE, -1, 4, NULL},
  32         {"vbr", &param_vbr, CONF_TYPE_FLOAT, CONF_RANGE, -50, 50, NULL},
  33         {"maxvbr", &param_maxvbr, CONF_TYPE_INT, 0, 0, 0, NULL},
  34         {"errprot", &param_errprot, CONF_TYPE_INT, CONF_RANGE, 0, 1, NULL},
  35         {"debug", &param_debug, CONF_TYPE_INT, CONF_RANGE, 0, 100000000, NULL},
  36         {NULL, NULL, 0, 0, 0, 0, NULL}
  37 };
  38
  39
  40 static int bind_toolame(audio_encoder_t *encoder, muxer_stream_t *mux_a)
  41 {
  42         mpae_toolame_ctx *ctx = (mpae_toolame_ctx *) encoder->priv;
  43
  44         mux_a->wf = malloc(sizeof(WAVEFORMATEX)+256);
  45         mux_a->wf->wFormatTag = 0x50;
  46         mux_a->wf->nChannels = encoder->params.channels;
  47         mux_a->wf->nSamplesPerSec = encoder->params.sample_rate;
  48         mux_a->wf->nAvgBytesPerSec = 125 * encoder->params.bitrate;
  49
  50         if(ctx->vbr || ((mux_a->wf->nAvgBytesPerSec * encoder->params.samples_per_frame) % mux_a->wf->nSamplesPerSec))
  51         {
  52                 mux_a->h.dwScale = encoder->params.samples_per_frame;
  53                 mux_a->h.dwRate = encoder->params.sample_rate;
  54                 mux_a->h.dwSampleSize = 0; // Blocksize not constant
  55         }
  56         else
  57         {
  58                 mux_a->h.dwScale = (mux_a->wf->nAvgBytesPerSec * encoder->params.samples_per_frame)/ mux_a->wf->nSamplesPerSec; /* for cbr */
  59                 mux_a->h.dwRate = mux_a->wf->nAvgBytesPerSec;
  60                 mux_a->h.dwSampleSize = mux_a->h.dwScale;
  61         }
  62         mux_a->wf->nBlockAlign = mux_a->h.dwScale;
  63         mux_a->h.dwSuggestedBufferSize = (encoder->params.audio_preload*mux_a->wf->nAvgBytesPerSec)/1000;
  64         mux_a->h.dwSuggestedBufferSize -= mux_a->h.dwSuggestedBufferSize % mux_a->wf->nBlockAlign;
  65
  66         mux_a->wf->cbSize = 0; //12;
  67         mux_a->wf->wBitsPerSample = 0; /* does not apply */
  68         ((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->wID = 1;
  69         ((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->fdwFlags = 2;
  70         ((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->nBlockSize = mux_a->wf->nBlockAlign;
  71         ((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->nFramesPerBlock = 1;
  72         ((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->nCodecDelay = 0;
  73
  74         // Fix allocation
  75         mux_a->wf = realloc(mux_a->wf, sizeof(WAVEFORMATEX)+mux_a->wf->cbSize);
  76
  77         encoder->input_format = AF_FORMAT_S16_NE;
  78         encoder->min_buffer_size = mux_a->h.dwSuggestedBufferSize;
  79         encoder->max_buffer_size = mux_a->h.dwSuggestedBufferSize*2;
  80
  81         return 1;
  82 }
  83
  84 static int encode_toolame(audio_encoder_t *encoder, uint8_t *dest, void *src, int len, int max_size)
  85 {
  86         mpae_toolame_ctx *ctx = (mpae_toolame_ctx *)encoder->priv;
  87         int ret_size = 0, r2, i, nsamples;
  88         int16_t *buffer;
  89
  90         nsamples = len / (2*encoder->params.channels);
  91         buffer = (uint16_t *) src;
  92         for(i = 0; i < nsamples; i++)
  93         {
  94             ctx->left_pcm[i] = buffer[ctx->channels * i];
  95             ctx->right_pcm[i] = buffer[(ctx->channels * i) + (ctx->channels - 1)];
  96         }
  97
  98         toolame_encode_buffer(ctx->toolame_ctx, ctx->left_pcm, ctx->right_pcm, nsamples, dest, max_size, &ret_size);
  99         r2 = mp_decode_mp3_header(dest);
 100         mp_msg(MSGT_MENCODER, MSGL_DBG2, "\nSIZE: %d, max: %d, r2: %d\n", ret_size, max_size, r2);
 101         if(r2 > 0)
 102                 ret_size = r2;
 103         return ret_size;
 104 }
 105
 106 int close_toolame(audio_encoder_t *encoder)
 107 {
 108         free(encoder->priv);
 109         return 1;
 110 }
 111
 112 static int get_frame_size(audio_encoder_t *encoder)
 113 {
 114         int sz;
 115         if(encoder->stream->buffer_len < 4)
 116                 return 0;
 117         sz = mp_decode_mp3_header(encoder->stream->buffer);
 118         if(sz <= 0)
 119                 return 0;
 120         return sz;
 121 }
 122
 123
 124 int mpae_init_toolame(audio_encoder_t *encoder)
 125 {
 126         int mode;
 127         mpae_toolame_ctx *ctx = NULL;
 128
 129         if(encoder->params.channels == 1)
 130         {
 131                 mp_msg(MSGT_MENCODER, MSGL_INFO, "ae_toolame, 1 audio channel, forcing mono mode\n");
 132                 mode = MPG_MD_MONO;
 133         }
 134         else if(encoder->params.channels == 2)
 135         {
 136                 if(! strcasecmp(param_mode, "dual"))
 137                         mode = MPG_MD_DUAL_CHANNEL;
 138                 else if(! strcasecmp(param_mode, "jstereo"))
 139                         mode = MPG_MD_JOINT_STEREO;
 140                 else if(! strcasecmp(param_mode, "stereo"))
 141                         mode = MPG_MD_STEREO;
 142                 else
 143                 {
 144                         mp_msg(MSGT_MENCODER, MSGL_ERR, "ae_toolame, unknown mode %s, exiting\n", param_mode);
 145                 }
 146         }
 147         else
 148                 mp_msg(MSGT_MENCODER, MSGL_ERR, "ae_toolame, Toolame can't encode > 2 channels, exiting\n");
 149
 150         ctx = (mpae_toolame_ctx *) calloc(1, sizeof(mpae_toolame_ctx));
 151         if(ctx == NULL)
 152         {
 153                 mp_msg(MSGT_MENCODER, MSGL_ERR, "ae_toolame, couldn't alloc a %d bytes context, exiting\n", sizeof(mpae_toolame_ctx));
 154                 return 0;
 155         }
 156
 157         ctx->toolame_ctx = toolame_init();
 158         if(ctx->toolame_ctx == NULL)
 159         {
 160                 mp_msg(MSGT_MENCODER, MSGL_ERR, "ae_toolame, couldn't initial parameters from libtoolame, exiting\n");
 161                 free(ctx);
 162                 return 0;
 163         }
 164         ctx->vbr = 0;
 165         ctx->channels = encoder->params.channels;
 166         ctx->srate = encoder->params.sample_rate;
 167
 168         if(toolame_setMode(ctx->toolame_ctx, mode) != 0)
 169                 return 0;
 170
 171         if(toolame_setPsymodel(ctx->toolame_ctx, param_psy) != 0)
 172                 return 0;
 173
 174         if(toolame_setSampleFreq(ctx->toolame_ctx, encoder->params.sample_rate) != 0)
 175                 return 0;
 176
 177         if(toolame_setBitrate(ctx->toolame_ctx, param_bitrate) != 0)
 178                 return 0;
 179
 180         if(param_errprot)
 181                 if(toolame_setErrorProtection(ctx->toolame_ctx, TRUE) != 0)
 182                         return 0;
 183
 184         if(param_vbr != 0)
 185         {
 186                 if(toolame_setVBR(ctx->toolame_ctx, TRUE) != 0)
 187                         return 0;
 188                 if(toolame_setVBRLevel(ctx->toolame_ctx, param_vbr) != 0)
 189                         return 0;
 190                 if(toolame_setPadding(ctx->toolame_ctx, FALSE) != 0)
 191                         return 0;
 192                 if(param_maxvbr)
 193                 {
 194                         if(toolame_setVBRUpperBitrate(ctx->toolame_ctx, param_maxvbr) != 0)
 195                                 return 0;
 196                 }
 197                 ctx->vbr = 1;
 198         }
 199
 200         if(toolame_setVerbosity(ctx->toolame_ctx, param_debug) != 0)
 201                 return 0;
 202
 203         if(toolame_init_params(ctx->toolame_ctx) != 0)
 204                 return 0;
 205
 206         ctx->bitrate = param_bitrate;
 207         encoder->params.bitrate = ctx->bitrate;
 208         encoder->params.samples_per_frame = 1152;
 209         encoder->priv = ctx;
 210         encoder->decode_buffer_size = 1152 * 2 * encoder->params.channels;
 211
 212         encoder->bind = bind_toolame;
 213         encoder->get_frame_size = get_frame_size;
 214         encoder->encode = encode_toolame;
 215         encoder->close = close_toolame;
 216
 217         return 1;
 218 }
 219