atrac3plus: give the phase_shift flag a better name.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/atrac3plus.c

@@ -1724,7 +1724,7 @@ static int decode_tones_info(GetBitContext *gb, Atrac3pChanUnitCtx *ctx,
     if (num_channels == 2) {
         get_subband_flags(gb, ctx->waves_info->tone_sharing, ctx->waves_info->num_tone_bands);
         get_subband_flags(gb, ctx->waves_info->tone_master,  ctx->waves_info->num_tone_bands);
-        get_subband_flags(gb, ctx->waves_info->phase_shift, ctx->waves_info->num_tone_bands);
+        get_subband_flags(gb, ctx->waves_info->invert_phase, ctx->waves_info->num_tone_bands);
     }
 
     ctx->waves_info->tones_index = 0;

libavcodec/atrac3plus.h

@@ -122,7 +122,7 @@ typedef struct Atrac3pWaveSynthParams {
     int num_tone_bands;                     ///< number of PQF bands with tones
     uint8_t tone_sharing[ATRAC3P_SUBBANDS]; ///< 1 - subband-wise tone sharing flags
     uint8_t tone_master[ATRAC3P_SUBBANDS];  ///< 1 - subband-wise tone channel swapping
-    uint8_t phase_shift[ATRAC3P_SUBBANDS];  ///< 1 - subband-wise 180° phase shifting
+    uint8_t invert_phase[ATRAC3P_SUBBANDS]; ///< 1 - subband-wise phase inversion
     int tones_index;                        ///< total sum of tones in this unit
     Atrac3pWaveParam waves[48];
 } Atrac3pWaveSynthParams;

libavcodec/atrac3plusdsp.c

@@ -117,7 +117,7 @@ av_cold void ff_atrac3p_init_wave_synth(void)
  *  @param[in]    waves_info    parameters for each sine wave
  *  @param[in]    envelope      envelope data for all waves in a group
  *  @param[in]    fdsp          ptr to floating-point DSP context
- *  @param[in]    phase_shift   flag indicates 180° phase shift
+ *  @param[in]    invert_phase  flag indicating 180° phase shift
  *  @param[in]    reg_offset    region offset for trimming envelope data
  *  @param[out]   out           receives sythesized data
  */
@@ -125,7 +125,7 @@ static void waves_synth(Atrac3pWaveSynthParams *synth_param,
                         Atrac3pWavesData *waves_info,
                         Atrac3pWaveEnvelope *envelope,
                         AVFloatDSPContext *fdsp,
-                        int phase_shift, int reg_offset, float *out)
+                        int invert_phase, int reg_offset, float *out)
 {
     int i, wn, inc, pos;
     double amp;
@@ -148,8 +148,8 @@ static void waves_synth(Atrac3pWaveSynthParams *synth_param,
         }
     }
 
-    /* 180° phase shift if requested */
-    if (phase_shift)
+    /* invert phase if requested */
+    if (invert_phase)
         fdsp->vector_fmul_scalar(out, out, -1.0f, 128);
 
     /* fade in with steep Hann window if requested */
@@ -222,12 +222,12 @@ void ff_atrac3p_generate_tones(Atrac3pChanUnitCtx *ch_unit, AVFloatDSPContext *f
     /* synthesize waves for both overlapping regions */
     if (tones_now->num_wavs && reg1_env_nonzero)
         waves_synth(ch_unit->waves_info_prev, tones_now, &tones_now->curr_env,
-                    fdsp, ch_unit->waves_info_prev->phase_shift[sb] & ch_num,
+                    fdsp, ch_unit->waves_info_prev->invert_phase[sb] & ch_num,
                     128, wavreg1);
 
     if (tones_next->num_wavs && reg2_env_nonzero)
         waves_synth(ch_unit->waves_info, tones_next, &tones_next->curr_env, fdsp,
-                    ch_unit->waves_info->phase_shift[sb] & ch_num, 0, wavreg2);
+                    ch_unit->waves_info->invert_phase[sb] & ch_num, 0, wavreg2);
 
     /* Hann windowing for non-faded wave signals */
     if (tones_now->num_wavs && tones_next->num_wavs &&