From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id 00E7F4342E for ; Fri, 10 Jun 2022 13:50:39 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id BCA5368B13C; Fri, 10 Jun 2022 16:50:36 +0300 (EEST) Received: from out203-205-221-210.mail.qq.com (out203-205-221-210.mail.qq.com [203.205.221.210]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 3ED7268B257 for ; Fri, 10 Jun 2022 16:50:28 +0300 (EEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foxmail.com; s=s201512; t=1654869025; bh=cY3A59eFpBzpXcEyJs+nA2UCSlDZhRNsLR2F5btvBMY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=BBvBaNYMtWQi9I4I1gFf6VGFlZEaPHY07O78ZmwpOKd3UMAdqrN/gvsxIBSnw/gkD yClrgZdfJ894qBJgu9+5F40i0qTzOFNOZXQMb16ANWflI+kKV53ob7+IKwXgqHhe7o GuoCy27g5khAykpQGSxAwplOTS452fw0f1jd+SgU= Received: from ZHILIZHAO-MB2.tencent.com ([59.37.125.123]) by newxmesmtplogicsvrsza7.qq.com (NewEsmtp) with SMTP id C969E6AB; Fri, 10 Jun 2022 21:50:22 +0800 X-QQ-mid: xmsmtpt1654869024tifkbxn0d Message-ID: X-QQ-XMAILINFO: MtyEhEaDnone+6Xm3fwlkEmzcM69WKX62xzZxPZz8mSYv2iOIbiC9EuzodPgzu mqqkVk/3bJxXtppgqnm4vTDtSBn/A3u7pngj6V328E3bhbxXmilGwaIXepSnoSQXn4HWNrQbGqOr hraRlJyuNZz/ivxzf/+eJjIbkpTIBkgR/IKYl88CQwJxJrBwKBcRe1ZEsIKY3m8bD7n0vPHFiJdq IqavtJW1euSZ2s0gWPbmjuEOa29kM38j05jA5mvM38iTs99ui7O58v8wC0HWfUr2WF69a2GpLwtp Asl/G28ZTVge6CSUOSb8vQSANKudWzNQr5Rrrqo0a4MxFs8p+X3SVGLxxuFqQ7gM0x8H9GfgwNNU 5p7Abevq28ug2j+JwwFLnJos9ylIQfvLtVhxcf2ybeMRr9OWQ1U1ew29DIVeWPxaNq7i6RK9FoI6 W6QSCwzpEEPn1URjhbtOqtrqHBVJNyRyGFlAQgOD+pTlp2MeXwD+EltyaEs9svp7qWDpUhzidT/X Z8iI/utrqCcuTMlbHMGdNS0WCT+sKi2c/7vd1rKRLdHY7hhOC8pknbV+1mdBuAiLjZ8AyciRebVc iF+sGmhbuUS6TVvSywA+iPpeNtH3Vfi9eTnxQOYf63ewmnJUglvEQGSvEuBOR3LQccN79+fncrZS ABdvHaKdmp/wd5KJZRNpeOSaydY+D2AvgoMC3DLf1VBrHqZQw5+VAGyO6GEtZwm0E+AVkHanrPTC zYXlANnZrcUvDpdY/ETHNLHKHuDKw9QyIloayet+MSsA0X1DobBVR9Qt9J5Jd1HmPiHvmuAmIKfR Wa7yN9Mc+lUu1Hp+1ZAfT+EUDIMLpb+kZ+3j6pgYD8DLjHIzt/uBfDvbMlO11hmosjAxi3fL0A3t wlk+bA8MI8DtGEOejpfLI9fLqWonh4N0iepsAUgDqgVQleDjWb34Lo81qGbnDm/gj48iCRRRZcuL u4g02cHob2Hmw8phc50g== From: Zhao Zhili To: ffmpeg-devel@ffmpeg.org Date: Fri, 10 Jun 2022 21:50:21 +0800 X-OQ-MSGID: <20220610135021.89892-3-quinkblack@foxmail.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220610135021.89892-1-quinkblack@foxmail.com> References: <20220610135021.89892-1-quinkblack@foxmail.com> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 3/3] avcodec/avs2_parser: parse more info X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Zhao Zhili Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: Including video resolution, framerate and picture type, etc. Signed-off-by: Zhao Zhili --- libavcodec/avs2.h | 27 ++++++++++ libavcodec/avs2_parser.c | 103 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 130 insertions(+) diff --git a/libavcodec/avs2.h b/libavcodec/avs2.h index f342ba52a0..e961c7d517 100644 --- a/libavcodec/avs2.h +++ b/libavcodec/avs2.h @@ -23,6 +23,8 @@ #ifndef AVCODEC_AVS2_H #define AVCODEC_AVS2_H +#include "libavutil/rational.h" + #define AVS2_SLICE_MAX_START_CODE 0x000001AF enum { @@ -38,4 +40,29 @@ enum { #define AVS2_ISPIC(x) ((x) == AVS2_INTRA_PIC_START_CODE || (x) == AVS2_INTER_PIC_START_CODE) #define AVS2_ISUNIT(x) ((x) == AVS2_SEQ_START_CODE || AVS2_ISPIC(x)) +enum AVS2Profile { + AVS2_PROFILE_MAIN_PIC = 0x12, + AVS2_PROFILE_MAIN = 0x20, + AVS2_PROFILE_MAIN10 = 0x22, +}; + +static const AVRational ff_avs2_frame_rate_tab[16] = { + { 0 , 0 }, // forbid + { 24000, 1001}, + { 24 , 1 }, + { 25 , 1 }, + { 30000, 1001}, + { 30 , 1 }, + { 50 , 1 }, + { 60000, 1001}, + { 60 , 1 }, + { 100 , 1 }, + { 120 , 1 }, + { 200 , 1 }, + { 240 , 1 }, + { 300 , 1 }, + { 0 , 0 }, // reserved + { 0 , 0 } // reserved +}; + #endif diff --git a/libavcodec/avs2_parser.c b/libavcodec/avs2_parser.c index 71cf442903..0638a35030 100644 --- a/libavcodec/avs2_parser.c +++ b/libavcodec/avs2_parser.c @@ -19,7 +19,9 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ +#include "libavutil/avutil.h" #include "avs2.h" +#include "get_bits.h" #include "parser.h" static int avs2_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size) @@ -58,6 +60,105 @@ static int avs2_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_siz return END_NOT_FOUND; } +static void parse_avs2_seq_header(AVCodecParserContext *s, const uint8_t *buf, + int buf_size, AVCodecContext *avctx) +{ + GetBitContext gb; + int profile, level; + int width, height; + int chroma, sample_precision, encoding_precision = 1; + // sample_precision and encoding_precision is 3 bits + static uint8_t precision[8] = { 0, 8, 10 }; + int aspect_ratio; + int frame_rate_code; + int low_delay; + + if (buf_size < 15) + return; + + init_get_bits8(&gb, buf, buf_size); + + s->key_frame = 1; + s->pict_type = AV_PICTURE_TYPE_I; + + profile = get_bits(&gb, 8); + level = get_bits(&gb, 8); + + // progressive_sequence u(1) + // field_coded_sequence u(1) + skip_bits(&gb, 2); + + width = get_bits(&gb, 14); + height = get_bits(&gb, 14); + + chroma = get_bits(&gb, 2); + sample_precision = get_bits(&gb, 3); + if (profile == AVS2_PROFILE_MAIN10) + encoding_precision = get_bits(&gb, 3); + + aspect_ratio = get_bits(&gb, 4); + frame_rate_code = get_bits(&gb, 4); + + // bit_rate_lower u(18) + // marker_bit f(1) + // bit_rate_upper u(12) + skip_bits(&gb, 31); + + low_delay = get_bits(&gb, 1); + + s->width = width; + s->height = height; + s->coded_width = FFALIGN(width, 8); + s->coded_height = FFALIGN(height, 8); + avctx->framerate.num = avctx->time_base.den = + ff_avs2_frame_rate_tab[frame_rate_code].num; + avctx->framerate.den = avctx->time_base.num = + ff_avs2_frame_rate_tab[frame_rate_code].den; + avctx->has_b_frames = FFMAX(avctx->has_b_frames, !low_delay); + + av_log(avctx, AV_LOG_DEBUG, + "AVS2 parse seq HDR: profile %x, level %x, " + "width %d, height %d, " + "chroma %d, sample_precision %d bits, encoding_precision %d bits, " + "framerate %d/%d, low_delay %d\n", + profile, level, + width, height, + chroma, precision[sample_precision], precision[encoding_precision], + avctx->framerate.num, avctx->framerate.den, low_delay); +} + +static void parse_avs2_units(AVCodecParserContext *s, const uint8_t *buf, + int buf_size, AVCodecContext *avctx) +{ + if (buf_size < 5) + return; + + if (!(buf[0] == 0x0 && buf[1] == 0x0 && buf[2] == 0x1)) + return; + + switch (buf[3]) { + case AVS2_SEQ_START_CODE: + parse_avs2_seq_header(s, buf + 4, buf_size - 4, avctx); + return; + case AVS2_INTRA_PIC_START_CODE: + s->key_frame = 1; + s->pict_type = AV_PICTURE_TYPE_I; + return; + case AVS2_INTER_PIC_START_CODE: + s->key_frame = 0; + if (buf_size > 9) { + int pic_code_type = buf[8] & 0x3; + if (pic_code_type == 1) + s->pict_type = AV_PICTURE_TYPE_P; + else if (pic_code_type == 3) + s->pict_type = AV_PICTURE_TYPE_S; + else + s->pict_type = AV_PICTURE_TYPE_B; + } + return; + } +} + static int avs2_parse(AVCodecParserContext *s, AVCodecContext *avctx, const uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size) @@ -76,6 +177,8 @@ static int avs2_parse(AVCodecParserContext *s, AVCodecContext *avctx, } } + parse_avs2_units(s, buf, buf_size, avctx); + *poutbuf = buf; *poutbuf_size = buf_size; -- 2.35.3 _______________________________________________ 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".