[FFmpeg-cvslog] r15296 - in trunk/libavcodec: ra144.c ra288.c ra288.h
diego
subversion
Thu Sep 11 10:13:23 CEST 2008
Author: diego
Date: Thu Sep 11 10:13:23 2008
New Revision: 15296
Log:
misc spelling/wording/grammar fixes
Modified:
trunk/libavcodec/ra144.c
trunk/libavcodec/ra288.c
trunk/libavcodec/ra288.h
Modified: trunk/libavcodec/ra144.c
==============================================================================
--- trunk/libavcodec/ra144.c (original)
+++ trunk/libavcodec/ra144.c Thu Sep 11 10:13:23 2008
@@ -38,16 +38,16 @@ typedef struct {
unsigned int lpc_tables[2][10];
/** LPC coefficients: lpc_coef[0] is the coefficients of the current frame
- * and lpc_coef[1] of the previous one */
+ * and lpc_coef[1] of the previous one. */
unsigned int *lpc_coef[2];
unsigned int lpc_refl_rms[2];
- /** the current subblock padded by the last 10 values of the previous one*/
+ /** The current subblock padded by the last 10 values of the previous one. */
int16_t curr_sblock[50];
- /** adaptive codebook. Its size is two units bigger to avoid a
- * buffer overflow */
+ /** Adaptive codebook, its size is two units bigger to avoid a
+ * buffer overflow. */
uint16_t adapt_cb[146+2];
} RA144Context;
@@ -218,7 +218,7 @@ static void int_to_int16(int16_t *out, c
* Evaluate the reflection coefficients from the filter coefficients.
* Does the inverse of the eval_coefs() function.
*
- * @return 1 if one of the reflection coefficients is of magnitude greater than
+ * @return 1 if one of the reflection coefficients is greater than
* 4095, 0 if not.
*/
static int eval_refl(int *refl, const int16_t *coefs, RA144Context *ractx)
@@ -265,14 +265,14 @@ static int interp(RA144Context *ractx, i
int b = NBLOCKS - a;
int i;
- // Interpolate block coefficients from the this frame forth block and
- // last frame forth block
+ // Interpolate block coefficients from the this frame's forth block and
+ // last frame's forth block.
for (i=0; i<30; i++)
out[i] = (a * ractx->lpc_coef[0][i] + b * ractx->lpc_coef[1][i])>> 2;
if (eval_refl(work, out, ractx)) {
// The interpolated coefficients are unstable, copy either new or old
- // coefficients
+ // coefficients.
int_to_int16(out, ractx->lpc_coef[copyold]);
return rescale_rms(ractx->lpc_refl_rms[copyold], energy);
} else {
@@ -280,7 +280,7 @@ static int interp(RA144Context *ractx, i
}
}
-/** Uncompress one block (20 bytes -> 160*2 bytes) */
+/** Uncompress one block (20 bytes -> 160*2 bytes). */
static int ra144_decode_frame(AVCodecContext * avctx, void *vdata,
int *data_size, const uint8_t *buf, int buf_size)
{
Modified: trunk/libavcodec/ra288.c
==============================================================================
--- trunk/libavcodec/ra288.c (original)
+++ trunk/libavcodec/ra288.c Thu Sep 11 10:13:23 2008
@@ -29,18 +29,18 @@ typedef struct {
float sp_lpc[36]; ///< LPC coefficients for speech data (spec: A)
float gain_lpc[10]; ///< LPC coefficients for gain (spec: GB)
- float sp_hist[111]; ///< Speech data history (spec: SB)
+ float sp_hist[111]; ///< speech data history (spec: SB)
- /** Speech part of the gain autocorrelation (spec: REXP) */
+ /** speech part of the gain autocorrelation (spec: REXP) */
float sp_rec[37];
- float gain_hist[38]; ///< Log-gain history (spec: SBLG)
+ float gain_hist[38]; ///< log-gain history (spec: SBLG)
- /** Recursive part of the gain autocorrelation (spec: REXPLG) */
+ /** recursive part of the gain autocorrelation (spec: REXPLG) */
float gain_rec[11];
- float sp_block[41]; ///< Speech data of four blocks (spec: STTMP)
- float gain_block[10]; ///< Gain data of four blocks (spec: GSTATE)
+ float sp_block[41]; ///< four blocks of speech data (spec: STTMP)
+ float gain_block[10]; ///< four blocks of gain data (spec: GSTATE)
} RA288Context;
static av_cold int ra288_decode_init(AVCodecContext *avctx)
@@ -71,7 +71,7 @@ static void decode(RA288Context *ractx,
int i, j;
double sumsum;
float sum, buffer[5];
- float *block = ractx->sp_block + 36; // Current block
+ float *block = ractx->sp_block + 36; // current block
memmove(ractx->sp_block, ractx->sp_block + 5, 36*sizeof(*ractx->sp_block));
@@ -122,14 +122,14 @@ static void convolve(float *tgt, const f
}
/**
- * Hybrid window filtering. See blocks 36 and 49 of the G.728 specification.
+ * Hybrid window filtering, see blocks 36 and 49 of the G.728 specification.
*
- * @param order the order of the filter
- * @param n the length of the input
- * @param non_rec the number of non-recursive samples
- * @param out the filter output
+ * @param order filter order
+ * @param n input length
+ * @param non_rec number of non-recursive samples
+ * @param out filter output
* @param in pointer to the input of the filter
- * @param hist pointer to the input history of the filter. It is updated by
+ * @param hist Pointer to the input history of the filter, it is updated by
* this function.
* @param out pointer to the non-recursive part of the output
* @param out2 pointer to the recursive part of the output
@@ -158,12 +158,12 @@ static void do_hybrid_window(int order,
out [i] = out2[i] + buffer2[i];
}
- /* Multiply by the white noise correcting factor (WNCF) */
+ /* Multiply by the white noise correcting factor (WNCF). */
*out *= 257./256.;
}
/**
- * Backward synthesis filter. Find the LPC coefficients from past speech data.
+ * Backward synthesis filter, find the LPC coefficients from past speech data.
*/
static void backward_filter(RA288Context *ractx)
{
Modified: trunk/libavcodec/ra288.h
==============================================================================
--- trunk/libavcodec/ra288.h (original)
+++ trunk/libavcodec/ra288.h Thu Sep 11 10:13:23 2008
@@ -126,7 +126,7 @@ static const float gain_window[38]={
0.183868408, 0.0923461914
};
-/** Synthesis bandwidth broadening table */
+/** synthesis bandwidth broadening table */
static const float syn_bw_tab[36]={
0.98828125, 0.976699829, 0.965254128, 0.953942537, 0.942763507, 0.931715488,
0.920796931, 0.910006344, 0.899342179, 0.888803005, 0.878387332, 0.868093729,
@@ -136,7 +136,7 @@ static const float syn_bw_tab[36]={
0.693900526, 0.685768902, 0.677732527, 0.669790328, 0.66194123, 0.654184103
};
-/** Gain bandwidth broadening table */
+/** gain bandwidth broadening table */
static const float gain_bw_tab[10]={
0.90625, 0.821289063, 0.74432373, 0.674499512, 0.61126709,
0.553955078, 0.50201416, 0.454956055, 0.41229248, 0.373657227
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