libmpcodecs/ae_toolame.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer 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 along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <inttypes.h>
  22 #include <unistd.h>
  23 #include <string.h>
  24 #include <sys/types.h>
  25 #include "m_option.h"
  26 #include "mp_msg.h"
  27 #include "libmpdemux/aviheader.h"
  28 #include "libaf/af_format.h"
  29 #include "libmpdemux/ms_hdr.h"
  30 #include "stream/stream.h"
  31 #include "libmpdemux/muxer.h"
  32 #include "ae_toolame.h"
  33 #include "libmpdemux/mp3_hdr.h"
  34
  35
  36 static int
  37     param_bitrate = 192,
  38     param_psy = 3,
  39     param_maxvbr = 0,
  40     param_errprot = 0,
  41     param_debug = 0;
  42
  43 static float param_vbr = 0;
  44 static char *param_mode = "stereo";
  45
  46 m_option_t toolameopts_conf[] = {
  47         {"br", &param_bitrate, CONF_TYPE_INT, 0, 0, 0, NULL},
  48         {"mode", &param_mode, CONF_TYPE_STRING, 0, 0, 0, NULL},
  49         {"psy", &param_psy, CONF_TYPE_INT, CONF_RANGE, -1, 4, NULL},
  50         {"vbr", &param_vbr, CONF_TYPE_FLOAT, CONF_RANGE, -50, 50, NULL},
  51         {"maxvbr", &param_maxvbr, CONF_TYPE_INT, 0, 0, 0, NULL},
  52         {"errprot", &param_errprot, CONF_TYPE_INT, CONF_RANGE, 0, 1, NULL},
  53         {"debug", &param_debug, CONF_TYPE_INT, CONF_RANGE, 0, 100000000, NULL},
  54         {NULL, NULL, 0, 0, 0, 0, NULL}
  55 };
  56
  57
  58 static int bind_toolame(audio_encoder_t *encoder, muxer_stream_t *mux_a)
  59 {
  60         mpae_toolame_ctx *ctx = (mpae_toolame_ctx *) encoder->priv;
  61
  62         mux_a->wf = malloc(sizeof(WAVEFORMATEX)+256);
  63         mux_a->wf->wFormatTag = 0x50;
  64         mux_a->wf->nChannels = encoder->params.channels;
  65         mux_a->wf->nSamplesPerSec = encoder->params.sample_rate;
  66         mux_a->wf->nAvgBytesPerSec = 125 * encoder->params.bitrate;
  67
  68         if(ctx->vbr || ((mux_a->wf->nAvgBytesPerSec * encoder->params.samples_per_frame) % mux_a->wf->nSamplesPerSec))
  69         {
  70                 mux_a->h.dwScale = encoder->params.samples_per_frame;
  71                 mux_a->h.dwRate = encoder->params.sample_rate;
  72                 mux_a->h.dwSampleSize = 0; // Blocksize not constant
  73         }
  74         else
  75         {
  76                 mux_a->h.dwScale = (mux_a->wf->nAvgBytesPerSec * encoder->params.samples_per_frame)/ mux_a->wf->nSamplesPerSec; /* for cbr */
  77                 mux_a->h.dwRate = mux_a->wf->nAvgBytesPerSec;
  78                 mux_a->h.dwSampleSize = mux_a->h.dwScale;
  79         }
  80         mux_a->wf->nBlockAlign = mux_a->h.dwScale;
  81         mux_a->h.dwSuggestedBufferSize = (encoder->params.audio_preload*mux_a->wf->nAvgBytesPerSec)/1000;
  82         mux_a->h.dwSuggestedBufferSize -= mux_a->h.dwSuggestedBufferSize % mux_a->wf->nBlockAlign;
  83
  84         mux_a->wf->cbSize = 0; //12;
  85         mux_a->wf->wBitsPerSample = 0; /* does not apply */
  86         ((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->wID = 1;
  87         ((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->fdwFlags = 2;
  88         ((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->nBlockSize = mux_a->wf->nBlockAlign;
  89         ((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->nFramesPerBlock = 1;
  90         ((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->nCodecDelay = 0;
  91
  92         // Fix allocation
  93         mux_a->wf = realloc(mux_a->wf, sizeof(WAVEFORMATEX)+mux_a->wf->cbSize);
  94
  95         encoder->input_format = AF_FORMAT_S16_NE;
  96         encoder->min_buffer_size = mux_a->h.dwSuggestedBufferSize;
  97         encoder->max_buffer_size = mux_a->h.dwSuggestedBufferSize*2;
  98
  99         return 1;
 100 }
 101
 102 static int encode_toolame(audio_encoder_t *encoder, uint8_t *dest, void *src, int len, int max_size)
 103 {
 104         mpae_toolame_ctx *ctx = (mpae_toolame_ctx *)encoder->priv;
 105         int ret_size = 0, r2, i, nsamples;
 106         int16_t *buffer;
 107
 108         nsamples = len / (2*encoder->params.channels);
 109         buffer = (uint16_t *) src;
 110         for(i = 0; i < nsamples; i++)
 111         {
 112             ctx->left_pcm[i] = buffer[ctx->channels * i];
 113             ctx->right_pcm[i] = buffer[(ctx->channels * i) + (ctx->channels - 1)];
 114         }
 115
 116         toolame_encode_buffer(ctx->toolame_ctx, ctx->left_pcm, ctx->right_pcm, nsamples, dest, max_size, &ret_size);
 117         r2 = mp_decode_mp3_header(dest);
 118         mp_msg(MSGT_MENCODER, MSGL_DBG2, "\nSIZE: %d, max: %d, r2: %d\n", ret_size, max_size, r2);
 119         if(r2 > 0)
 120                 ret_size = r2;
 121         return ret_size;
 122 }
 123
 124 static int close_toolame(audio_encoder_t *encoder)
 125 {
 126         free(encoder->priv);
 127         return 1;
 128 }
 129
 130 static int get_frame_size(audio_encoder_t *encoder)
 131 {
 132         int sz;
 133         if(encoder->stream->buffer_len < 4)
 134                 return 0;
 135         sz = mp_decode_mp3_header(encoder->stream->buffer);
 136         if(sz <= 0)
 137                 return 0;
 138         return sz;
 139 }
 140
 141
 142 int mpae_init_toolame(audio_encoder_t *encoder)
 143 {
 144         int mode;
 145         mpae_toolame_ctx *ctx = NULL;
 146
 147         if(encoder->params.channels == 1)
 148         {
 149                 mp_msg(MSGT_MENCODER, MSGL_INFO, "ae_toolame, 1 audio channel, forcing mono mode\n");
 150                 mode = MPG_MD_MONO;
 151         }
 152         else if(encoder->params.channels == 2)
 153         {
 154                 if(! strcasecmp(param_mode, "dual"))
 155                         mode = MPG_MD_DUAL_CHANNEL;
 156                 else if(! strcasecmp(param_mode, "jstereo"))
 157                         mode = MPG_MD_JOINT_STEREO;
 158                 else if(! strcasecmp(param_mode, "stereo"))
 159                         mode = MPG_MD_STEREO;
 160                 else
 161                 {
 162                         mp_msg(MSGT_MENCODER, MSGL_ERR, "ae_toolame, unknown mode %s, exiting\n", param_mode);
 163                 }
 164         }
 165         else
 166                 mp_msg(MSGT_MENCODER, MSGL_ERR, "ae_toolame, Toolame can't encode > 2 channels, exiting\n");
 167
 168         ctx = calloc(1, sizeof(mpae_toolame_ctx));
 169         if(ctx == NULL)
 170         {
 171                 mp_msg(MSGT_MENCODER, MSGL_ERR, "ae_toolame, couldn't alloc a %d bytes context, exiting\n", sizeof(mpae_toolame_ctx));
 172                 return 0;
 173         }
 174
 175         ctx->toolame_ctx = toolame_init();
 176         if(ctx->toolame_ctx == NULL)
 177         {
 178                 mp_msg(MSGT_MENCODER, MSGL_ERR, "ae_toolame, couldn't initial parameters from libtoolame, exiting\n");
 179                 free(ctx);
 180                 return 0;
 181         }
 182         ctx->vbr = 0;
 183         ctx->channels = encoder->params.channels;
 184         ctx->srate = encoder->params.sample_rate;
 185
 186         if(toolame_setMode(ctx->toolame_ctx, mode) != 0)
 187                 return 0;
 188
 189         if(toolame_setPsymodel(ctx->toolame_ctx, param_psy) != 0)
 190                 return 0;
 191
 192         if(toolame_setSampleFreq(ctx->toolame_ctx, encoder->params.sample_rate) != 0)
 193                 return 0;
 194
 195         if(toolame_setBitrate(ctx->toolame_ctx, param_bitrate) != 0)
 196                 return 0;
 197
 198         if(param_errprot)
 199                 if(toolame_setErrorProtection(ctx->toolame_ctx, TRUE) != 0)
 200                         return 0;
 201
 202         if(param_vbr != 0)
 203         {
 204                 if(toolame_setVBR(ctx->toolame_ctx, TRUE) != 0)
 205                         return 0;
 206                 if(toolame_setVBRLevel(ctx->toolame_ctx, param_vbr) != 0)
 207                         return 0;
 208                 if(toolame_setPadding(ctx->toolame_ctx, FALSE) != 0)
 209                         return 0;
 210                 if(param_maxvbr)
 211                 {
 212                         if(toolame_setVBRUpperBitrate(ctx->toolame_ctx, param_maxvbr) != 0)
 213                                 return 0;
 214                 }
 215                 ctx->vbr = 1;
 216         }
 217
 218         if(toolame_setVerbosity(ctx->toolame_ctx, param_debug) != 0)
 219                 return 0;
 220
 221         if(toolame_init_params(ctx->toolame_ctx) != 0)
 222                 return 0;
 223
 224         ctx->bitrate = param_bitrate;
 225         encoder->params.bitrate = ctx->bitrate;
 226         encoder->params.samples_per_frame = 1152;
 227         encoder->priv = ctx;
 228         encoder->decode_buffer_size = 1152 * 2 * encoder->params.channels;
 229
 230         encoder->bind = bind_toolame;
 231         encoder->get_frame_size = get_frame_size;
 232         encoder->encode = encode_toolame;
 233         encoder->close = close_toolame;
 234
 235         return 1;
 236 }