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avcodec/acelp_pitch_delay: Inline small functions only used once 

ff_acelp_decode_8bit_to_1st_delay3, ff_acelp_decode_4bit_to_2nd_delay3
and ff_acelp_decode_5_6_bit_to_2nd_delay3 are all only used once (by
g729dec) whereas ff_acelp_decode_9bit_to_1st_delay6 and
ff_acelp_decode_6bit_to_2nd_delay6 are completely unused; with the
possible exception of ff_acelp_decode_4bit_to_2nd_delay3, these
functions are so small that inlining them is appropriate; and as long as
ff_acelp_decode_4bit_to_2nd_delay3 is only called once, this is also
true for it.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2021-02-18 21:24:51 +01:00
parent bce9c5e276
commit 790be3125d
2 changed files with 34 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
libavcodec/acelp_pitch_delay.c
View File

@ -29,47 +29,6 @@
#include "celp_math.h"
#include "audiodsp.h"
int ff_acelp_decode_8bit_to_1st_delay3(int ac_index)
{
ac_index += 58;
if(ac_index > 254)
ac_index = 3 * ac_index - 510;
return ac_index;
}
int ff_acelp_decode_4bit_to_2nd_delay3(
int ac_index,
int pitch_delay_min)
{
if(ac_index < 4)
return 3 * (ac_index + pitch_delay_min);
else if(ac_index < 12)
return 3 * pitch_delay_min + ac_index + 6;
else
return 3 * (ac_index + pitch_delay_min) - 18;
}
int ff_acelp_decode_5_6_bit_to_2nd_delay3(
int ac_index,
int pitch_delay_min)
{
return 3 * pitch_delay_min + ac_index - 2;
}
int ff_acelp_decode_9bit_to_1st_delay6(int ac_index)
{
if(ac_index < 463)
return ac_index + 105;
else
return 6 * (ac_index - 368);
}
int ff_acelp_decode_6bit_to_2nd_delay6(
int ac_index,
int pitch_delay_min)
{
return 6 * pitch_delay_min + ac_index - 3;
}
void ff_acelp_update_past_gain(
int16_t* quant_energy,
int gain_corr_factor,

45
libavcodec/acelp_pitch_delay.h
View File

@ -41,7 +41,13 @@
* with 1/3 resolution, 19 < pitch_delay < 85
* integers only, 85 <= pitch_delay <= 143
*/
int ff_acelp_decode_8bit_to_1st_delay3(int ac_index);
static inline int ff_acelp_decode_8bit_to_1st_delay3(int ac_index)
{
ac_index += 58;
if (ac_index > 254)
ac_index = 3 * ac_index - 510;
return ac_index;
}
/**
* @brief Decode pitch delay of the second subframe encoded by 5 or 6 bits
@ -58,9 +64,11 @@ int ff_acelp_decode_8bit_to_1st_delay3(int ac_index);
* @remark The routine is used in G.729 @@8k, AMR @@10.2k, AMR @@7.95k,
* AMR @@7.4k for the second subframe.
*/
int ff_acelp_decode_5_6_bit_to_2nd_delay3(
int ac_index,
int pitch_delay_min);
static inline int ff_acelp_decode_5_6_bit_to_2nd_delay3(int ac_index,
int pitch_delay_min)
{
return 3 * pitch_delay_min + ac_index - 2;
}
/**
* @brief Decode pitch delay with 1/3 precision.
@ -78,9 +86,16 @@ int ff_acelp_decode_5_6_bit_to_2nd_delay3(
* @remark The routine is used in G.729 @@6.4k, AMR @@6.7k, AMR @@5.9k,
* AMR @@5.15k, AMR @@4.75k for the second subframe.
*/
int ff_acelp_decode_4bit_to_2nd_delay3(
int ac_index,
int pitch_delay_min);
static inline int ff_acelp_decode_4bit_to_2nd_delay3(int ac_index,
int pitch_delay_min)
{
if (ac_index < 4)
return 3 * (ac_index + pitch_delay_min);
else if (ac_index < 12)
return 3 * pitch_delay_min + ac_index + 6;
else
return 3 * (ac_index + pitch_delay_min) - 18;
}
/**
* @brief Decode pitch delay of the first subframe encoded by 9 bits
@ -95,7 +110,13 @@ int ff_acelp_decode_4bit_to_2nd_delay3(
*
* @remark The routine is used in AMR @@12.2k for the first and third subframes.
*/
int ff_acelp_decode_9bit_to_1st_delay6(int ac_index);
static inline int ff_acelp_decode_9bit_to_1st_delay6(int ac_index)
{
if (ac_index < 463)
return ac_index + 105;
else
return 6 * (ac_index - 368);
}
/**
* @brief Decode pitch delay of the second subframe encoded by 6 bits
@ -111,9 +132,11 @@ int ff_acelp_decode_9bit_to_1st_delay6(int ac_index);
*
* @remark The routine is used in AMR @@12.2k for the second and fourth subframes.
*/
int ff_acelp_decode_6bit_to_2nd_delay6(
int ac_index,
int pitch_delay_min);
static inline int ff_acelp_decode_6bit_to_2nd_delay6(int ac_index,
int pitch_delay_min)
{
return 6 * pitch_delay_min + ac_index - 3;
}
/**
* @brief Update past quantized energies