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Code Issues Releases Activity

avcodec/rl: Remove nonstatic storage of RL tables

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ff_rl_free() was added in 324e50ee95929a9491b855c5e15451145bd5d1ec,
but never used; nonstatic storage was not used long before that.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2020-12-08 19:44:02 +01:00
parent 477dd2df60
commit 1ead0c6388
2 changed files with 11 additions and 50 deletions
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50
libavcodec/rl.c
View File

@ -25,27 +25,16 @@
#include "rl.h"
void ff_rl_free(RLTable *rl)
{
int i;
for (i = 0; i < 2; i++) {
av_freep(&rl->max_run[i]);
av_freep(&rl->max_level[i]);
av_freep(&rl->index_run[i]);
}
}
av_cold int ff_rl_init(RLTable *rl,
uint8_t static_store[2][2 * MAX_RUN + MAX_LEVEL + 3])
av_cold void ff_rl_init(RLTable *rl,
uint8_t static_store[2][2 * MAX_RUN + MAX_LEVEL + 3])
{
int8_t max_level[MAX_RUN + 1], max_run[MAX_LEVEL + 1];
uint8_t index_run[MAX_RUN + 1];
int last, run, level, start, end, i;
/* If table is static, we can quit if rl->max_level[0] is not NULL */
if (static_store && rl->max_level[0])
return 0;
/* If rl->max_level[0] is set, this RLTable has already been initialized */
if (rl->max_level[0])
return;
/* compute max_level[], max_run[] and index_run[] */
for (last = 0; last < 2; last++) {
@ -70,36 +59,13 @@ av_cold int ff_rl_init(RLTable *rl,
if (run > max_run[level])
max_run[level] = run;
}
if (static_store)
rl->max_level[last] = static_store[last];
else {
rl->max_level[last] = av_malloc(MAX_RUN + 1);
if (!rl->max_level[last])
goto fail;
}
rl->max_level[last] = static_store[last];
memcpy(rl->max_level[last], max_level, MAX_RUN + 1);
if (static_store)
rl->max_run[last] = static_store[last] + MAX_RUN + 1;
else {
rl->max_run[last] = av_malloc(MAX_LEVEL + 1);
if (!rl->max_run[last])
goto fail;
}
rl->max_run[last] = static_store[last] + MAX_RUN + 1;
memcpy(rl->max_run[last], max_run, MAX_LEVEL + 1);
if (static_store)
rl->index_run[last] = static_store[last] + MAX_RUN + MAX_LEVEL + 2;
else {
rl->index_run[last] = av_malloc(MAX_RUN + 1);
if (!rl->index_run[last])
goto fail;
}
rl->index_run[last] = static_store[last] + MAX_RUN + MAX_LEVEL + 2;
memcpy(rl->index_run[last], index_run, MAX_RUN + 1);
}
return 0;
fail:
ff_rl_free(rl);
return AVERROR(ENOMEM);
}
av_cold void ff_rl_init_vlc(RLTable *rl, unsigned static_size)

11
libavcodec/rl.h
View File

@ -49,17 +49,12 @@ typedef struct RLTable {
} RLTable;
/**
* @param static_store static uint8_t array[2][2*MAX_RUN + MAX_LEVEL + 3] which will hold
* the level and run tables, if this is NULL av_malloc() will be used
* @param static_store static uint8_t array[2][2*MAX_RUN + MAX_LEVEL + 3]
* to hold the level and run tables.
*/
int ff_rl_init(RLTable *rl, uint8_t static_store[2][2*MAX_RUN + MAX_LEVEL + 3]);
void ff_rl_init(RLTable *rl, uint8_t static_store[2][2*MAX_RUN + MAX_LEVEL + 3]);
void ff_rl_init_vlc(RLTable *rl, unsigned static_size);
/**
* Free the contents of a dynamically allocated table.
*/
void ff_rl_free(RLTable *rl);
#define INIT_VLC_RL(rl, static_size)\
{\
int q;\