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#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <string.h>
#include "m_option.h"
#include "../mp_msg.h"
#include "aviheader.h"
#include "../libaf/af_format.h"
#include "ms_hdr.h"
#include "muxer.h"
#include "ae_toolame.h"
#include "../libmpdemux/mp3_hdr.h"
static int
param_bitrate = 192,
param_psy = 3,
param_maxvbr = 192,
param_errprot = 0,
param_debug = 0;
float param_vbr = 0;
static char *param_mode = "stereo";
m_option_t toolameopts_conf[] = {
{"br", ¶m_bitrate, CONF_TYPE_INT, 0, 0, 0, NULL},
{"mode", ¶m_mode, CONF_TYPE_STRING, 0, 0, 0, NULL},
{"psy", ¶m_psy, CONF_TYPE_INT, CONF_RANGE, 0, 3, NULL},
{"vbr", ¶m_vbr, CONF_TYPE_FLOAT, CONF_RANGE, 0, 50, NULL},
{"maxvbr", ¶m_maxvbr, CONF_TYPE_INT, 0, 0, 0, NULL},
{"errprot", ¶m_errprot, CONF_TYPE_INT, CONF_RANGE, 0, 1, NULL},
{"debug", ¶m_debug, CONF_TYPE_INT, CONF_RANGE, 0, 100000000, NULL},
{NULL, NULL, 0, 0, 0, 0, NULL}
};
static int bind_toolame(audio_encoder_t *encoder, muxer_stream_t *mux_a)
{
mux_a->wf = malloc(sizeof(WAVEFORMATEX)+256);
mux_a->wf->wFormatTag = 0x50;
mux_a->wf->nChannels = encoder->params.channels;
mux_a->wf->nSamplesPerSec = encoder->params.sample_rate;
mux_a->wf->nAvgBytesPerSec = 125 * encoder->params.bitrate;
mux_a->h.dwRate = mux_a->wf->nAvgBytesPerSec;
mux_a->h.dwScale = (mux_a->wf->nAvgBytesPerSec * encoder->params.samples_per_frame)/ mux_a->wf->nSamplesPerSec; /* for cbr */
if((mux_a->wf->nAvgBytesPerSec * encoder->params.samples_per_frame) % mux_a->wf->nSamplesPerSec)
{
mux_a->h.dwScale = encoder->params.samples_per_frame;
mux_a->h.dwRate = encoder->params.sample_rate;
mux_a->h.dwSampleSize = 0; // Blocksize not constant
}
else
{
mux_a->h.dwSampleSize = mux_a->h.dwScale;
}
mux_a->wf->nBlockAlign = mux_a->h.dwScale;
mux_a->h.dwSuggestedBufferSize = (encoder->params.audio_preload*mux_a->wf->nAvgBytesPerSec)/1000;
mux_a->h.dwSuggestedBufferSize -= mux_a->h.dwSuggestedBufferSize % mux_a->wf->nBlockAlign;
mux_a->wf->cbSize = 12;
mux_a->wf->wBitsPerSample = 0; /* does not apply */
((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->wID = 1;
((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->fdwFlags = 2;
((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->nBlockSize = mux_a->wf->nBlockAlign;
((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->nFramesPerBlock = 1;
((MPEGLAYER3WAVEFORMAT *) (mux_a->wf))->nCodecDelay = 0;
// Fix allocation
mux_a->wf = realloc(mux_a->wf, sizeof(WAVEFORMATEX)+mux_a->wf->cbSize);
encoder->input_format = AF_FORMAT_S16_NE;
encoder->min_buffer_size = mux_a->h.dwSuggestedBufferSize;
encoder->max_buffer_size = mux_a->h.dwSuggestedBufferSize*2;
return 1;
}
static int encode_toolame(audio_encoder_t *encoder, uint8_t *dest, void *src, int len, int max_size)
{
mpae_toolame_ctx *ctx = (mpae_toolame_ctx *)encoder->priv;
int ret_size = 0, i, nsamples;
int16_t *buffer;
nsamples = len / (2*encoder->params.channels);
buffer = (uint16_t *) src;
for(i = 0; i < nsamples; i++)
{
ctx->left_pcm[i] = buffer[ctx->channels * i];
ctx->right_pcm[i] = buffer[(ctx->channels * i) + (ctx->channels - 1)];
}
toolame_encode_buffer(ctx->toolame_ctx, ctx->left_pcm, ctx->right_pcm, nsamples, dest, max_size, &ret_size);
return ret_size;
}
int close_toolame(audio_encoder_t *encoder)
{
free(encoder->priv);
return 1;
}
static int get_frame_size(audio_encoder_t *encoder)
{
int sz;
if(encoder->stream->buffer_len < 4)
return 0;
sz = mp_decode_mp3_header(encoder->stream->buffer);
if(sz <= 0)
return 0;
return sz;
}
int mpae_init_toolame(audio_encoder_t *encoder)
{
int mode;
mpae_toolame_ctx *ctx = NULL;
if(encoder->params.channels == 1)
{
mp_msg(MSGT_MENCODER, MSGL_INFO, "ae_toolame, 1 audio channel, forcing mono mode\n");
mode = MPG_MD_MONO;
}
else if(encoder->params.channels == 2)
{
if(! strcasecmp(param_mode, "dual"))
mode = MPG_MD_DUAL_CHANNEL;
else if(! strcasecmp(param_mode, "jstereo"))
mode = MPG_MD_JOINT_STEREO;
else if(! strcasecmp(param_mode, "stereo"))
mode = MPG_MD_STEREO;
else
{
mp_msg(MSGT_MENCODER, MSGL_ERR, "ae_toolame, unknown mode %s, exiting\n", param_mode);
}
}
else
mp_msg(MSGT_MENCODER, MSGL_ERR, "ae_toolame, Toolame can't encode > 2 channels, exiting\n");
ctx = (mpae_toolame_ctx *) calloc(1, sizeof(mpae_toolame_ctx));
if(ctx == NULL)
{
mp_msg(MSGT_MENCODER, MSGL_ERR, "ae_toolame, couldn't alloc a %d bytes context, exiting\n", sizeof(mpae_toolame_ctx));
return 0;
}
ctx->toolame_ctx = toolame_init();
if(ctx->toolame_ctx == NULL)
{
mp_msg(MSGT_MENCODER, MSGL_ERR, "ae_toolame, couldn't initial parameters from libtoolame, exiting\n");
free(ctx);
return 0;
}
ctx->channels = encoder->params.channels;
ctx->srate = encoder->params.sample_rate;
if(toolame_setMode(ctx->toolame_ctx, mode) != 0)
return 0;
if(toolame_setPsymodel(ctx->toolame_ctx, param_psy) != 0)
return 0;
if(toolame_setSampleFreq(ctx->toolame_ctx, encoder->params.sample_rate) != 0)
return 0;
if(toolame_setBitrate(ctx->toolame_ctx, param_bitrate) != 0)
return 0;
if(param_errprot)
if(toolame_setErrorProtection(ctx->toolame_ctx, TRUE) != 0)
return 0;
if(param_vbr > 0)
{
if(toolame_setVBR(ctx->toolame_ctx, TRUE) != 0)
return 0;
if(toolame_setVBRLevel(ctx->toolame_ctx, param_maxvbr) != 0)
return 0;
if(toolame_setPadding(ctx->toolame_ctx, FALSE) != 0)
return 0;
if(toolame_setVBRUpperBitrate(ctx->toolame_ctx, param_maxvbr) != 0)
return 0;
}
if(toolame_setVerbosity(ctx->toolame_ctx, param_debug) != 0)
return 0;
if(toolame_init_params(ctx->toolame_ctx) != 0)
return 0;
ctx->bitrate = param_bitrate;
encoder->params.bitrate = ctx->bitrate;
encoder->params.samples_per_frame = 1152;
encoder->priv = ctx;
encoder->decode_buffer_size = 1152 * 2 * encoder->params.channels;
encoder->bind = bind_toolame;
encoder->get_frame_size = get_frame_size;
encoder->encode = encode_toolame;
encoder->close = close_toolame;
return 1;
}
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