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Code Issues Releases Activity

avcodec: do not use init_static_data on some codecs

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They don't modify AVCodec, no needs to call it at register. They will be
wasteful if these codecs are unused. Instead, call static data initialization
at codecs' init.

Benchmark:
old: 51281340 decicycles in avcodec_register_all,       1 runs,      0 skips
new:  6738960 decicycles in avcodec_register_all,       1 runs,      0 skips

Reviewed-by: wm4 <nfxjfg@googlemail.com>
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>
This commit is contained in:
Muhammad Faiz 2018-02-03 01:18:27 +07:00
parent 8e50bd61e4
commit 3caecf7ce8
3 changed files with 19 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
libavcodec/jpeg2000dec.c
View File

@ -34,6 +34,7 @@
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
@ -2142,10 +2143,18 @@ static int jp2_find_codestream(Jpeg2000DecoderContext *s)
return 0;
}
static av_cold void jpeg2000_init_static_data(void)
{
ff_jpeg2000_init_tier1_luts();
ff_mqc_init_context_tables();
}
static av_cold int jpeg2000_decode_init(AVCodecContext *avctx)
{
static AVOnce init_static_once = AV_ONCE_INIT;
Jpeg2000DecoderContext *s = avctx->priv_data;
ff_thread_once(&init_static_once, jpeg2000_init_static_data);
ff_jpeg2000dsp_init(&s->dsp);
return 0;
@ -2223,12 +2232,6 @@ end:
return ret;
}
static av_cold void jpeg2000_init_static_data(AVCodec *codec)
{
ff_jpeg2000_init_tier1_luts();
ff_mqc_init_context_tables();
}
#define OFFSET(x) offsetof(Jpeg2000DecoderContext, x)
#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
@ -2252,7 +2255,6 @@ AVCodec ff_jpeg2000_decoder = {
.id = AV_CODEC_ID_JPEG2000,
.capabilities = AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_DR1,
.priv_data_size = sizeof(Jpeg2000DecoderContext),
.init_static_data = jpeg2000_init_static_data,
.init = jpeg2000_decode_init,
.decode = jpeg2000_decode_frame,
.priv_class = &jpeg2000_class,

7
libavcodec/qdmc.c
View File

@ -26,6 +26,7 @@
#define BITSTREAM_READER_LE
#include "libavutil/channel_layout.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "bytestream.h"
@ -204,7 +205,7 @@ static const uint8_t phase_diff_codes[] = {
INIT_VLC_LE | INIT_VLC_USE_NEW_STATIC); \
} while (0)
static av_cold void qdmc_init_static_data(AVCodec *codec)
static av_cold void qdmc_init_static_data(void)
{
int i;
@ -250,10 +251,13 @@ static void make_noises(QDMCContext *s)
static av_cold int qdmc_decode_init(AVCodecContext *avctx)
{
static AVOnce init_static_once = AV_ONCE_INIT;
QDMCContext *s = avctx->priv_data;
int fft_size, fft_order, size, g, j, x;
GetByteContext b;
ff_thread_once(&init_static_once, qdmc_init_static_data);
if (!avctx->extradata || (avctx->extradata_size < 48)) {
av_log(avctx, AV_LOG_ERROR, "extradata missing or truncated\n");
return AVERROR_INVALIDDATA;
@ -775,7 +779,6 @@ AVCodec ff_qdmc_decoder = {
.id = AV_CODEC_ID_QDMC,
.priv_data_size = sizeof(QDMCContext),
.init = qdmc_decode_init,
.init_static_data = qdmc_init_static_data,
.close = qdmc_decode_close,
.decode = qdmc_decode_frame,
.flush = qdmc_flush,

7
libavcodec/wmavoice.c
View File

@ -30,6 +30,7 @@
#include "libavutil/channel_layout.h"
#include "libavutil/float_dsp.h"
#include "libavutil/mem.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "internal.h"
#include "get_bits.h"
@ -310,7 +311,7 @@ static av_cold int decode_vbmtree(GetBitContext *gb, int8_t vbm_tree[25])
return 0;
}
static av_cold void wmavoice_init_static_data(AVCodec *codec)
static av_cold void wmavoice_init_static_data(void)
{
static const uint8_t bits[] = {
2, 2, 2, 4, 4, 4,
@ -365,9 +366,12 @@ static av_cold void wmavoice_flush(AVCodecContext *ctx)
*/
static av_cold int wmavoice_decode_init(AVCodecContext *ctx)
{
static AVOnce init_static_once = AV_ONCE_INIT;
int n, flags, pitch_range, lsp16_flag;
WMAVoiceContext *s = ctx->priv_data;
ff_thread_once(&init_static_once, wmavoice_init_static_data);
/**
* Extradata layout:
* - byte 0-18: WMAPro-in-WMAVoice extradata (see wmaprodec.c),
@ -1991,7 +1995,6 @@ AVCodec ff_wmavoice_decoder = {
.id = AV_CODEC_ID_WMAVOICE,
.priv_data_size = sizeof(WMAVoiceContext),
.init = wmavoice_decode_init,
.init_static_data = wmavoice_init_static_data,
.close = wmavoice_decode_end,
.decode = wmavoice_decode_packet,
.capabilities = AV_CODEC_CAP_SUBFRAMES | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,