int decode_layer1_frame(PMPSTR mp, unsigned char *pcm_sample, int *pcm_point) { real fraction[2][SBLIMIT]; /* FIXME: change real -> double ? */ sideinfo_layer_I si; struct frame *fr = &(mp->fr); int single = fr->single; int i, clip = 0; I_step_one(mp, &si); if (fr->stereo == 1 || single == 3) single = 0; if (single >= 0) { /* decoding one of possibly two channels */ for (i = 0; i < SCALE_BLOCK; i++) { I_step_two(mp, &si, fraction); clip += synth_1to1_mono(mp, (real *) fraction[single], pcm_sample, pcm_point); } } else { for (i = 0; i < SCALE_BLOCK; i++) { int p1 = *pcm_point; I_step_two(mp, &si, fraction); clip += synth_1to1(mp, (real *) fraction[0], 0, pcm_sample, &p1); clip += synth_1to1(mp, (real *) fraction[1], 1, pcm_sample, pcm_point); } } return clip; }
/*int do_layer1(struct frame *fr,int outmode,struct audio_info_struct *ai) */ int do_layer1(PMPSTR mp, unsigned char *pcm_sample,int *pcm_point) { int clip=0; unsigned int balloc[2*SBLIMIT]; unsigned int scale_index[2][SBLIMIT]; real fraction[2][SBLIMIT]; struct frame *fr=&(mp->fr); int i,stereo = fr->stereo; int single = fr->single; fr->jsbound = (fr->mode == MPG_MD_JOINT_STEREO) ? (fr->mode_ext<<2)+4 : 32; if(stereo == 1 || single == 3) single = 0; I_step_one(balloc,scale_index,fr); for (i=0;i<SCALE_BLOCK;i++) { I_step_two(fraction,balloc,scale_index,fr); if(single >= 0) { clip += synth_1to1_mono( mp, (real *) fraction[single],pcm_sample,pcm_point); } else { int p1 = *pcm_point; clip += synth_1to1( mp, (real *) fraction[0],0,pcm_sample,&p1); clip += synth_1to1( mp, (real *) fraction[1],1,pcm_sample,pcm_point); } } return clip; }
int do_layer1(mpg123_handle *fr) { int clip=0; int i,stereo = fr->stereo; unsigned int balloc[2*SBLIMIT]; unsigned int scale_index[2][SBLIMIT]; real (*fraction)[SBLIMIT] = fr->layer1.fraction; /* fraction[2][SBLIMIT] */ int single = fr->single; fr->jsbound = (fr->mode == MPG_MD_JOINT_STEREO) ? (fr->mode_ext<<2)+4 : 32; if(stereo == 1 || single == SINGLE_MIX) /* I don't see mixing handled here */ single = SINGLE_LEFT; I_step_one(balloc,scale_index,fr); for(i=0;i<SCALE_BLOCK;i++) { I_step_two(fraction,balloc,scale_index,fr); if(single != SINGLE_STEREO) clip += (fr->synth_mono)(fraction[single], fr); else clip += (fr->synth_stereo)(fraction[0], fraction[1], fr); } return clip; }
int do_layer1(mpg123_handle *fr) { int clip=0; int i,stereo = fr->stereo; unsigned int balloc[2*SBLIMIT]; unsigned int scale_index[2][SBLIMIT]; ALIGNED(16) real fraction[2][SBLIMIT]; int single = fr->single; fr->jsbound = (fr->mode == MPG_MD_JOINT_STEREO) ? (fr->mode_ext<<2)+4 : 32; if(stereo == 1 || single == SINGLE_MIX) /* I don't see mixing handled here */ single = SINGLE_LEFT; I_step_one(balloc,scale_index,fr); for (i=0;i<SCALE_BLOCK;i++) { I_step_two(fraction,balloc,scale_index,fr); if(single != SINGLE_STEREO) { clip += (fr->synth_mono)( (real *) fraction[single], fr); } else { clip += (fr->synth)( (real *) fraction[0], 0, fr, 0); clip += (fr->synth)( (real *) fraction[1], 1, fr, 1); } } return clip; }
static int do_layer1(mp3lib_ctx *ctx,int single) { struct frame *fr=&ctx->fr; int clip=0; int i,stereo = fr->stereo; unsigned int balloc[2*SBLIMIT]; unsigned int scale_index[2][SBLIMIT]; real fraction[2][SBLIMIT]; // int single = fr->single; // printf("do_layer1(0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X )\n", // wordpointer[0],wordpointer[1],wordpointer[2],wordpointer[3],wordpointer[4],wordpointer[5],wordpointer[6],wordpointer[7]); fr->jsbound = (fr->mode == MPG_MD_JOINT_STEREO) ? (fr->mode_ext<<2)+4 : 32; if(stereo == 1 || single == 3) single = 0; I_step_one(ctx,balloc,scale_index,fr); for (i=0;i<SCALE_BLOCK;i++) { I_step_two(ctx,fraction,balloc,scale_index,fr); if(single >= 0) { clip += (fr->synth_mono)( ctx,(real *) fraction[single],ctx->pcm_sample,&ctx->pcm_point); } else { int p1 = ctx->pcm_point; clip += (fr->synth)( ctx,(real *) fraction[0],0,ctx->pcm_sample,&p1); clip += (fr->synth)( ctx,(real *) fraction[1],1,ctx->pcm_sample,&ctx->pcm_point); } } return clip; }