From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> To: ffmpeg-devel@ffmpeg.org Cc: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> Subject: [FFmpeg-devel] [PATCH 10/13] avcodec/dca_core: Don't use too big max_depth in get_vlc2() Date: Tue, 13 Sep 2022 13:33:07 +0200 Message-ID: <GV1P250MB07377E6221A1611C15E9D0388F479@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM> (raw) In-Reply-To: <GV1P250MB0737F59A25C260BC89CFE14F8F479@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM> Most of the VLCs used here have a max_depth of two; some have a max_depth of one. Therefore one can just use two and avoid the runtime check for whether one should perform another round of LUT lookup in case the first read did not read a complete codeword. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com> --- libavcodec/dca_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/dca_core.c b/libavcodec/dca_core.c index 7dff6633df..7b23a40df4 100644 --- a/libavcodec/dca_core.c +++ b/libavcodec/dca_core.c @@ -69,7 +69,7 @@ static const uint8_t block_code_nbits[7] = { static int dca_get_vlc(GetBitContext *s, DCAVLC *v, int i) { - return get_vlc2(s, v->vlc[i].table, v->vlc[i].bits, v->max_depth); + return get_vlc2(s, v->vlc[i].table, v->vlc[i].bits, 2); } static void get_array(GetBitContext *s, int32_t *array, int size, int n) -- 2.34.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".
next prev parent reply other threads:[~2022-09-13 11:34 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-09-13 11:28 [FFmpeg-devel] [PATCH 01/13] avcodec/dolby_e_parser: Remove unnecessary headers Andreas Rheinhardt 2022-09-13 11:32 ` [FFmpeg-devel] [PATCH 02/13] avcodec/dcahuff: Remove unused define Andreas Rheinhardt 2022-09-13 11:33 ` [FFmpeg-devel] [PATCH 03/13] avcodec/dcahuff: Avoid redundant offset table Andreas Rheinhardt 2022-09-13 11:33 ` [FFmpeg-devel] [PATCH 04/13] avcodec/dca_core, dcahuff: Don't use DCAVLC unnecessarily Andreas Rheinhardt 2022-09-13 11:33 ` [FFmpeg-devel] [PATCH 05/13] avcodec/dcahuff: Always use three bits for transition mode VLCs Andreas Rheinhardt 2022-09-13 11:33 ` [FFmpeg-devel] [PATCH 06/13] avcodec/dcaenc: Create encoder-adapted tables Andreas Rheinhardt 2022-09-13 11:33 ` [FFmpeg-devel] [PATCH 07/13] avcodec/dcahuff: Combine tables, use ff_init_vlc_from_lengths() Andreas Rheinhardt 2022-09-13 11:33 ` [FFmpeg-devel] [PATCH 08/13] avcodec/dcahuff, dca_core, dca_lbr: Apply offset during VLC creation Andreas Rheinhardt 2022-09-13 11:33 ` [FFmpeg-devel] [PATCH 09/13] avcodec/dca_core: Inline number of bits of scale factor VLCs Andreas Rheinhardt 2022-09-13 11:33 ` Andreas Rheinhardt [this message] 2022-09-13 11:33 ` [FFmpeg-devel] [PATCH 11/13] avcodec/dcahuff: Replace DCAVLC by ordinary VLCs Andreas Rheinhardt 2022-09-13 11:33 ` [FFmpeg-devel] [PATCH 12/13] avcodec/dca_lbr: Hardcode lpc table to save space Andreas Rheinhardt 2022-09-13 11:33 ` [FFmpeg-devel] [PATCH 13/13] avcodec/dca_lbr: Inline nb_bits for VLCs Andreas Rheinhardt 2022-09-15 19:34 ` [FFmpeg-devel] [PATCH 01/13] avcodec/dolby_e_parser: Remove unnecessary headers Andreas Rheinhardt
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=GV1P250MB07377E6221A1611C15E9D0388F479@GV1P250MB0737.EURP250.PROD.OUTLOOK.COM \ --to=andreas.rheinhardt@outlook.com \ --cc=ffmpeg-devel@ffmpeg.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: link
Git Inbox Mirror of the ffmpeg-devel mailing list - see https://ffmpeg.org/mailman/listinfo/ffmpeg-devel This inbox may be cloned and mirrored by anyone: git clone --mirror https://master.gitmailbox.com/ffmpegdev/0 ffmpegdev/git/0.git # If you have public-inbox 1.1+ installed, you may # initialize and index your mirror using the following commands: public-inbox-init -V2 ffmpegdev ffmpegdev/ https://master.gitmailbox.com/ffmpegdev \ ffmpegdev@gitmailbox.com public-inbox-index ffmpegdev Example config snippet for mirrors. AGPL code for this site: git clone https://public-inbox.org/public-inbox.git