diff options
| -rw-r--r-- | libavcodec/h261.c | 13 | ||||
| -rw-r--r-- | libavcodec/h261.h | 3 | ||||
| -rw-r--r-- | libavcodec/h261enc.c | 16 |
3 files changed, 12 insertions, 20 deletions
diff --git a/libavcodec/h261.c b/libavcodec/h261.c index 47bad4e57f..01abfadcda 100644 --- a/libavcodec/h261.c +++ b/libavcodec/h261.c @@ -30,8 +30,6 @@ #define IS_FIL(a) ((a) & MB_TYPE_H261_FIL) -uint8_t ff_h261_rl_table_store[2][2 * MAX_RUN + MAX_LEVEL + 3]; - static void h261_loop_filter(uint8_t *src, int stride) { int x, y, xy, yz; @@ -79,14 +77,3 @@ void ff_h261_loop_filter(MpegEncContext *s) h261_loop_filter(dest_cb, uvlinesize); h261_loop_filter(dest_cr, uvlinesize); } - -av_cold void ff_h261_common_init(void) -{ - static int done = 0; - - if (done) - return; - - ff_rl_init(&ff_h261_rl_tcoeff, ff_h261_rl_table_store); - done = 1; -} diff --git a/libavcodec/h261.h b/libavcodec/h261.h index 399a404b2b..25728a295d 100644 --- a/libavcodec/h261.h +++ b/libavcodec/h261.h @@ -48,8 +48,6 @@ typedef struct H261Context { #define MB_TYPE_H261_FIL 0x800000 -extern uint8_t ff_h261_rl_table_store[2][2 * MAX_RUN + MAX_LEVEL + 3]; - extern const uint8_t ff_h261_mba_code[35]; extern const uint8_t ff_h261_mba_bits[35]; extern const uint8_t ff_h261_mtype_code[10]; @@ -60,7 +58,6 @@ extern const uint8_t ff_h261_cbp_tab[63][2]; extern RLTable ff_h261_rl_tcoeff; void ff_h261_loop_filter(MpegEncContext *s); -void ff_h261_common_init(void); int ff_h261_get_picture_format(int width, int height); void ff_h261_reorder_mb_index(MpegEncContext *s); diff --git a/libavcodec/h261enc.c b/libavcodec/h261enc.c index 8d5d62b786..eec526c500 100644 --- a/libavcodec/h261enc.c +++ b/libavcodec/h261enc.c @@ -27,6 +27,7 @@ #include "libavutil/attributes.h" #include "libavutil/avassert.h" +#include "libavutil/thread.h" #include "avcodec.h" #include "mpegutils.h" #include "mpegvideo.h" @@ -361,9 +362,17 @@ static av_cold void init_uni_h261_rl_tab(const RLTable *rl, uint8_t *len_tab) } } +static av_cold void h261_encode_init_static(void) +{ + static uint8_t h261_rl_table_store[2][2 * MAX_RUN + MAX_LEVEL + 3]; + + ff_rl_init(&ff_h261_rl_tcoeff, h261_rl_table_store); + init_uni_h261_rl_tab(&ff_h261_rl_tcoeff, uni_h261_rl_len); +} + av_cold void ff_h261_encode_init(MpegEncContext *s) { - ff_h261_common_init(); + static AVOnce init_static_once = AV_ONCE_INIT; s->min_qcoeff = -127; s->max_qcoeff = 127; @@ -371,10 +380,9 @@ av_cold void ff_h261_encode_init(MpegEncContext *s) s->c_dc_scale_table = ff_mpeg1_dc_scale_table; s->ac_esc_length = 6+6+8; - init_uni_h261_rl_tab(&ff_h261_rl_tcoeff, uni_h261_rl_len); - s->intra_ac_vlc_length = s->inter_ac_vlc_length = uni_h261_rl_len; s->intra_ac_vlc_last_length = s->inter_ac_vlc_last_length = uni_h261_rl_len + 128*64; + ff_thread_once(&init_static_once, h261_encode_init_static); } static const AVClass h261_class = { @@ -393,7 +401,7 @@ AVCodec ff_h261_encoder = { .init = ff_mpv_encode_init, .encode2 = ff_mpv_encode_picture, .close = ff_mpv_encode_end, - .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, + .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP, .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, .priv_class = &h261_class, |