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 ESMTPS id D7B2B4CAC4 for ; Tue, 11 Feb 2025 10:40:46 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id B12FB68BD0A; Tue, 11 Feb 2025 12:40:21 +0200 (EET) Received: from out162-62-57-137.mail.qq.com (out162-62-57-137.mail.qq.com [162.62.57.137]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id C411968BA9E for ; Tue, 11 Feb 2025 12:40:14 +0200 (EET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foxmail.com; s=s201512; t=1739270406; bh=OhEFZB7iBFsdkkdCqs7jkCOBEpWGI11KAwan6e41EjQ=; h=From:To:Cc:Subject:Date; b=JSXgzo6/yjsUACgMfNNsLpIrUE31GWbNyAiyzg/I8gSz+65ajyF02yuDEQ3eLEWtx 6kU8nV+ILDlmHoj7QUdAtU5Pnu8C0Xz7N70MqXexURKbCDxWoCxetWJFjqVLdDWAJN mToil2ZjPiorHAcnf3/4jKQ4ZMIm7/wa2wf/H9mM= Received: from ZHILIZHAO-MB1.tencent.com ([113.108.77.57]) by newxmesmtplogicsvrszb16-1.qq.com (NewEsmtp) with SMTP id A05812DF; Tue, 11 Feb 2025 18:40:05 +0800 X-QQ-mid: xmsmtpt1739270405t0rj9vxyh Message-ID: X-QQ-XMAILINFO: Nxcyh1H/Itmf8GUO7sNhdBsWvzl5M5/yYDSpcAvsSo8GXiMhAUxdDJtAjdm6NZ t8yA7dJvJbWEzSDFdLSRmczr74MDRWrtjRORbTo5ZLMsSMmKSS2VQHSolg2jWr2JLMtZBLVsvQzM 6SGUePd/5vg3Z8u5V/M24dXIdQhHqS9o/YfEQo2S2ph10FR/92Q/HYHah2nuPf2H8WV23ZRBLW3m BinwugQYX0LrOI1CS82wxY2tMhFK+DEs6Bjfvs8etsVfP6TJznp5ZWZxD4eeP6peRpKoE/N3sem7 ED9G+7OxUehM//4eu7nSA0ZZKFnBJweWlrfZbRFiJ0hwOBmIb8LFLSJ5+ke2gLvcQQ0K2a1+n/5i j7OG4U4nT7+7E2UN6X5dulrJ2qsO0fa73qEPiZb7Dgcm1NZn4cAc3HaaoOpv06JvXN/CAyfrniRB cW0Ly14JvW+qJrM4kzaRzNXmrAFSGkyKyZrR+5Bc3FknMyWN5rwng8Smx/NbN21YLKpzUtzn6ZFb nKGIdqYnWEL08r/9yeOeTEzKK8dBJbOjhMuFoISdECwt3mlNpWoGylpO6yGn/+MTg5sMsNPMo8Ku ugMLMYhbJyAOveLMDX7h7/nct5/wUwxPYMTNKylkVJEWMU3ODhczgy/UvCvrkYTTE04sU9nPN+cB 2QmyUvoXWm7aCXUx6R5rrp0euSZMe3/xtWkkvJNIZMrEen2CE2IE42fvKvq3wOkuGoO8h6s/tFEZ DNfd8pIvAiKdt22S1LjHlUTryDKnifhL4WTIhad+kyyNQUksx3Qqpwjfe5EdODzy355YsUnBtMGn Hkp7UlEUwkmjEDJvdDQUKjFMm86TurlcWOulG09dz6j4FSWnYoAS3PH0ksnKRgRDK79kt9ZtY2hA S0yfKH37vV0z0qi6XV55rahpMFJkG2luAUwigqIVTlyL9+2gZe+83/V0ZWoGQY0cQcEpcMX16Xej n0bZwcDQXt++sPrQRMOZV35boOpKhk2HrrnSQO1Qg= X-QQ-XMRINFO: NyFYKkN4Ny6FSmKK/uo/jdU= From: Zhao Zhili To: ffmpeg-devel@ffmpeg.org Date: Tue, 11 Feb 2025 18:40:04 +0800 X-OQ-MSGID: <20250211104004.90734-1-quinkblack@foxmail.com> X-Mailer: git-send-email 2.46.0 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH v6 3/3] avcodec/hevc: Add alpha layer support 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: From: Zhao Zhili Signed-off-by: Zhao Zhili --- libavcodec/hevc/hevcdec.c | 73 ++++++++++++++++++++++++++++++++++++++- libavcodec/hevc/hevcdec.h | 2 ++ libavcodec/hevc/refs.c | 34 +++++++++++++++++- 3 files changed, 107 insertions(+), 2 deletions(-) diff --git a/libavcodec/hevc/hevcdec.c b/libavcodec/hevc/hevcdec.c index e9c045f7a1..f71edf213b 100644 --- a/libavcodec/hevc/hevcdec.c +++ b/libavcodec/hevc/hevcdec.c @@ -466,6 +466,25 @@ static int export_multilayer(HEVCContext *s, const HEVCVPS *vps) return 0; } +int ff_hevc_is_alpha_video(const HEVCContext *s) +{ + const HEVCVPS *vps = s->vps; + int ret = 0; + + if (vps->nb_layers != 2 || !vps->layer_id_in_nuh[1]) + return 0; + + /* decode_vps_ext() guarantees that SCALABILITY_AUXILIARY with AuxId other + * than alpha cannot reach here. + */ + ret = (s->vps->scalability_mask_flag & HEVC_SCALABILITY_AUXILIARY); + + av_log(s->avctx, AV_LOG_DEBUG, "Multi layer video, %s alpha video\n", + ret ? "is" : "not"); + + return ret; +} + static int setup_multilayer(HEVCContext *s, const HEVCVPS *vps) { unsigned layers_active_output = 0, highest_layer; @@ -473,6 +492,18 @@ static int setup_multilayer(HEVCContext *s, const HEVCVPS *vps) s->layers_active_output = 1; s->layers_active_decode = 1; + if (ff_hevc_is_alpha_video(s)) { + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->avctx->pix_fmt); + + if (!(desc->flags & AV_PIX_FMT_FLAG_ALPHA)) + return 0; + + s->layers_active_decode = (1 << vps->nb_layers) - 1; + s->layers_active_output = 1; + + return 0; + } + // nothing requested - decode base layer only if (!s->nb_view_ids) return 0; @@ -530,6 +561,34 @@ static int setup_multilayer(HEVCContext *s, const HEVCVPS *vps) return 0; } +static enum AVPixelFormat map_to_alpha_format(HEVCContext *s, + enum AVPixelFormat pix_fmt) +{ + switch (pix_fmt) { + case AV_PIX_FMT_YUV420P: + case AV_PIX_FMT_YUVJ420P: + return AV_PIX_FMT_YUVA420P; + case AV_PIX_FMT_YUV420P10: + return AV_PIX_FMT_YUVA420P10; + case AV_PIX_FMT_YUV444P: + return AV_PIX_FMT_YUVA444P; + case AV_PIX_FMT_YUV422P: + return AV_PIX_FMT_YUVA422P; + case AV_PIX_FMT_YUV422P10LE: + return AV_PIX_FMT_YUVA422P10LE; + case AV_PIX_FMT_YUV444P10: + return AV_PIX_FMT_YUVA444P10; + case AV_PIX_FMT_YUV444P12: + return AV_PIX_FMT_YUVA444P12; + case AV_PIX_FMT_YUV422P12: + return AV_PIX_FMT_YUVA422P12; + default: + av_log(s->avctx, AV_LOG_WARNING, "No alpha pixel format map for %s\n", + av_get_pix_fmt_name(pix_fmt)); + return AV_PIX_FMT_NONE; + } +} + static enum AVPixelFormat get_format(HEVCContext *s, const HEVCSPS *sps) { #define HWACCEL_MAX (CONFIG_HEVC_DXVA2_HWACCEL + \ @@ -540,9 +599,13 @@ static enum AVPixelFormat get_format(HEVCContext *s, const HEVCSPS *sps) CONFIG_HEVC_VIDEOTOOLBOX_HWACCEL + \ CONFIG_HEVC_VDPAU_HWACCEL + \ CONFIG_HEVC_VULKAN_HWACCEL) - enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmt = pix_fmts; + enum AVPixelFormat pix_fmts[HWACCEL_MAX + 3], *fmt = pix_fmts; + enum AVPixelFormat alpha_fmt = AV_PIX_FMT_NONE; int ret; + if (ff_hevc_is_alpha_video(s)) + alpha_fmt = map_to_alpha_format(s, sps->pix_fmt); + switch (sps->pix_fmt) { case AV_PIX_FMT_YUV420P: case AV_PIX_FMT_YUVJ420P: @@ -664,6 +727,8 @@ static enum AVPixelFormat get_format(HEVCContext *s, const HEVCSPS *sps) break; } + if (alpha_fmt != AV_PIX_FMT_NONE) + *fmt++ = alpha_fmt; *fmt++ = sps->pix_fmt; *fmt = AV_PIX_FMT_NONE; @@ -3194,6 +3259,12 @@ static int hevc_frame_start(HEVCContext *s, HEVCLayerContext *l, !sps->vui.common.video_signal_type_present_flag) pix_fmt = sps_base->pix_fmt; + // Ignore range mismatch between base layer and alpha layer + if (ff_hevc_is_alpha_video(s) && + sps_base->pix_fmt == AV_PIX_FMT_YUV420P && + pix_fmt == AV_PIX_FMT_YUVJ420P) + pix_fmt = sps_base->pix_fmt; + if (pix_fmt != sps_base->pix_fmt || sps->width != sps_base->width || sps->height != sps_base->height) { diff --git a/libavcodec/hevc/hevcdec.h b/libavcodec/hevc/hevcdec.h index 4e95035688..b2b725b5cd 100644 --- a/libavcodec/hevc/hevcdec.h +++ b/libavcodec/hevc/hevcdec.h @@ -714,6 +714,8 @@ void ff_hevc_hls_residual_coding(HEVCLocalContext *lc, const HEVCPPS *pps, void ff_hevc_hls_mvd_coding(HEVCLocalContext *lc, int x0, int y0, int log2_cb_size); +int ff_hevc_is_alpha_video(const HEVCContext *s); + extern const uint8_t ff_hevc_qpel_extra_before[4]; extern const uint8_t ff_hevc_qpel_extra_after[4]; extern const uint8_t ff_hevc_qpel_extra[4]; diff --git a/libavcodec/hevc/refs.c b/libavcodec/hevc/refs.c index dd7f7f95a8..da0bac8d9c 100644 --- a/libavcodec/hevc/refs.c +++ b/libavcodec/hevc/refs.c @@ -79,6 +79,30 @@ void ff_hevc_flush_dpb(HEVCContext *s) } } +static int replace_alpha_plane(AVFrame *alpha, AVFrame *base) +{ + AVBufferRef *base_a = av_frame_get_plane_buffer(base, 3); + uint8_t *data = alpha->data[0]; + int ret; + + for (int i = 0; i < FF_ARRAY_ELEMS(alpha->buf) && alpha->buf[i]; i++) { + AVBufferRef *buf = alpha->buf[i]; + + if (data >= buf->data && data < buf->data + buf->size) { + ret = av_buffer_replace(&alpha->buf[i], base_a); + if (ret < 0) + return ret; + + alpha->linesize[0] = base->linesize[3]; + alpha->data[0] = base->data[3]; + + return 0; + } + } + + return AVERROR_BUG; +} + static HEVCFrame *alloc_frame(HEVCContext *s, HEVCLayerContext *l) { const HEVCVPS *vps = l->sps->vps; @@ -103,7 +127,7 @@ static HEVCFrame *alloc_frame(HEVCContext *s, HEVCLayerContext *l) } // add view ID side data if it's nontrivial - if (vps->nb_layers > 1 || view_id) { + if (!ff_hevc_is_alpha_video(s) && (vps->nb_layers > 1 || view_id)) { HEVCSEITDRDI *tdrdi = &s->sei.tdrdi; AVFrameSideData *sd = av_frame_side_data_new(&frame->f->side_data, &frame->f->nb_side_data, @@ -161,7 +185,15 @@ static HEVCFrame *alloc_frame(HEVCContext *s, HEVCLayerContext *l) if (ret < 0) goto fail; + frame->pps = av_refstruct_ref_c(s->pps); + if (l != &s->layers[0] && ff_hevc_is_alpha_video(s)) { + AVFrame *alpha = frame->f; + AVFrame *base = s->layers[0].cur_frame->f; + ret = replace_alpha_plane(alpha, base); + if (ret < 0) + goto fail; + } return frame; fail: -- 2.46.0 _______________________________________________ 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".