From patchwork Thu Nov 2 01:49:49 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jun Zhao X-Patchwork-Id: 5829 Delivered-To: ffmpegpatchwork@gmail.com Received: by 10.2.161.90 with SMTP id m26csp1478759jah; Wed, 1 Nov 2017 18:57:47 -0700 (PDT) X-Google-Smtp-Source: ABhQp+SEzhyDurwh46sk0tYzReclXQM+TYcVZW+RhzE/EUdmT3tvTTGOw5pAJxv/rKU3j/BKffqU X-Received: by 10.28.113.84 with SMTP id m81mr217454wmc.134.1509587867869; Wed, 01 Nov 2017 18:57:47 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1509587867; cv=none; d=google.com; s=arc-20160816; b=b+9L1hG1D0Nsx6F4hZiRwcDRo31xPKqGpNai9gty+fbOsBtA8p2ceuVKEM6HqTSzcD bMvQNVBJFmj/mH7NQ4ZUb2N+vSx9omX8x0rs9PVhd4TMDLg3GvHhpHcOpQxB0iCCruFP kKsg0DthjtpYV7Zide0wZC4R8lcYboprw8g73p6HUnzOvQZ1eMgSaAV2RlRNHuzECKNT lXeoRBWjeTRzAeNWbCXbux0C1P1SV27mHYSiXvhhWZMb91OvF6kEQduH8JmBKYHq+Gfe wOZjs7LUFvpfsKsDv7aaeLNKEEuE6MW9LNyBg630I7Qsi6ZO5ug4EfwTPEqi+9WizpAZ J+rA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:reply-to:list-subscribe:list-help:list-post :list-archive:list-unsubscribe:list-id:precedence:subject :content-language:mime-version:user-agent:date:message-id:from:to :dkim-signature:delivered-to:arc-authentication-results; bh=GD1rRaOnVsZ4mmHCUpRmyLGi/zz3Q4QZjHWM/FaJdys=; b=f4i4upEgLCz4GBnsNilKCTF0FRnRawaNg/C4OpA4djdIi17eizd6OBhyuTkcxTH+a6 IkAYB1XuME0A3YIsEycFWgiCATXiIuQ5p2Dbv3QQ5Im1PALHAmRh3unH5KV0SAmKQL7k Wc/VrsR8wb2rnXmgAe4MO1HJHYgVm6wLptsAfBh3Q4y44VzHwdc6ctkvxMQrxbAfqF0U Ye03nb9+5ZP3d5zHkGmdndRxvLtHty7USsCip9Bg0ZPmvlS1pykI3ZQa+P5+c5whKMMA /uBkIo6ZW9sgQJsc8FQ04kuV5dPkN7YHTD08JYN/Lr/4w0tPezsKyRwYBFWruCFRcHO0 ISYg== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.s=20161025 header.b=U7diVpTr; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=gmail.com Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id e8si1748051wrd.327.2017.11.01.18.57.47; Wed, 01 Nov 2017 18:57:47 -0700 (PDT) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.s=20161025 header.b=U7diVpTr; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=gmail.com Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 10CB568A368; Thu, 2 Nov 2017 03:57:36 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-pf0-f182.google.com (mail-pf0-f182.google.com [209.85.192.182]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 251E368A34E for ; Thu, 2 Nov 2017 03:57:29 +0200 (EET) Received: by mail-pf0-f182.google.com with SMTP id b79so3385143pfk.5 for ; Wed, 01 Nov 2017 18:57:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=to:from:subject:message-id:date:user-agent:mime-version :content-language; bh=yYASv6VXrcJgBGPxaxEIbG3wrL4NgUkXL59H5Vb3YVo=; b=U7diVpTrVZl1iJreoZT7rau85YQZd63Zhe99GtkYcp5Xs7d94s8L+exxE5tEIITJbs QyMD4guO8jERdOlBPx7a4/6EhVkY9gUF2hnSL4Pp8ZCqeyak5OK7mXP2aGy8DzwC7hxO P56zwkuvYcEaDlGqA+Z8z/c7u3Ett3JO2+2HdvdfW1VgBNw7pMKHD17PuQ7uNVVtSSiu cmKrWA+3ed3f8uloFcAzIw8uIO7j+Bl5djcRfjkndlErLzC6cUhR+Kq9bTQAnrE9wkr5 0ravb3yjQ5JoeocSrygRSs7+nTQuzjQgpbhC38vodM8J2EUnqSM4IjIx+s1LFxXJniGj k3KA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:from:subject:message-id:date:user-agent :mime-version:content-language; bh=yYASv6VXrcJgBGPxaxEIbG3wrL4NgUkXL59H5Vb3YVo=; b=NQ4/CaVvK98ww9DXKrnvOXM2yQhmNY8wCEb5pKiErt5i13dAtH2+iJlRfHUHgKiZER E0d+lw+CSTSFLS/76tHeewMHKZa+f7GQue3FWHuhTBo0vo9D/YMGrBqgMXBTZQtT04ph r5zvG87V3WwqasCZmwWMwUpH6svnCGMnlz9qndwz3wa9j7dWngrvOirqkHWuXMHuZXDl 48COy5KZDUg3xWDTR1GnZ73cQuhvWGf/zBjW16U/VXVnn2kFqA20gBCHBt+qyZgyxhE9 YSZAH4e5Cln5kGSj1NDBVN7ZRJql4xQKLh4guA2GSDASUiYhrBP+oD/erAfs7my/y/7j xP+g== X-Gm-Message-State: AMCzsaXNMBtp+hpxpKdQWTQ0cjklXWZeOziXPKMfwMaB5iG/GEH6FYq0 rKiT4eaEevcAwMH2SiLaFVQ= X-Received: by 10.84.130.99 with SMTP id 90mr1527809plc.343.1509587393036; Wed, 01 Nov 2017 18:49:53 -0700 (PDT) Received: from [10.67.68.22] ([192.55.54.44]) by smtp.gmail.com with ESMTPSA id 76sm3363707pfq.4.2017.11.01.18.49.51 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 01 Nov 2017 18:49:52 -0700 (PDT) To: FFmpeg development discussions and patches , Mark Thompson From: Jun Zhao Message-ID: <80dd175b-06e4-0edb-3650-945e8861abf5@gmail.com> Date: Thu, 2 Nov 2017 09:49:49 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 Content-Language: en-US Subject: [FFmpeg-devel] [PATCH] example/vaapi_transcode: Add a VA-VAPI transcode example. X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 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 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" From eb747cb25f86b4f3db5549ac5b0699927ee7c559 Mon Sep 17 00:00:00 2001 From: Jun Zhao Date: Wed, 1 Nov 2017 14:46:14 +0800 Subject: [PATCH] example/vaapi_transcode: Add a VA-VAPI transcode example. Signed-off-by: Jun Zhao Signed-off-by: Liu, Kaixuan --- configure | 2 + doc/examples/Makefile | 1 + doc/examples/vaapi_transcode.c | 254 +++++++++++++++++++++++++++++++++++++++++ 3 files changed, 257 insertions(+) create mode 100644 doc/examples/vaapi_transcode.c diff --git a/configure b/configure index cc524ca16a..fbd5aeeaba 100755 --- a/configure +++ b/configure @@ -1524,6 +1524,7 @@ EXAMPLE_LIST=" scaling_video_example transcode_aac_example transcoding_example + vaapi_transcode_example " EXTERNAL_AUTODETECT_LIBRARY_LIST=" @@ -3309,6 +3310,7 @@ resampling_audio_example_deps="avutil swresample" scaling_video_example_deps="avutil swscale" transcode_aac_example_deps="avcodec avformat swresample" transcoding_example_deps="avfilter avcodec avformat avutil" +vaapi_transcode_example_deps="avcodec avformat avutil" # EXTRALIBS_LIST cpu_init_extralibs="pthreads_extralibs" diff --git a/doc/examples/Makefile b/doc/examples/Makefile index 58afd71b85..bac2381e08 100644 --- a/doc/examples/Makefile +++ b/doc/examples/Makefile @@ -19,6 +19,7 @@ EXAMPLES-$(CONFIG_RESAMPLING_AUDIO_EXAMPLE) += resampling_audio EXAMPLES-$(CONFIG_SCALING_VIDEO_EXAMPLE) += scaling_video EXAMPLES-$(CONFIG_TRANSCODE_AAC_EXAMPLE) += transcode_aac EXAMPLES-$(CONFIG_TRANSCODING_EXAMPLE) += transcoding +EXAMPLES-$(CONFIG_VAAPI_TRANSCODE_EXAMPLE) += vaapi_transcode EXAMPLES := $(EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)$(EXESUF)) EXAMPLES_G := $(EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)_g$(EXESUF)) diff --git a/doc/examples/vaapi_transcode.c b/doc/examples/vaapi_transcode.c new file mode 100644 index 0000000000..1491920ac9 --- /dev/null +++ b/doc/examples/vaapi_transcode.c @@ -0,0 +1,254 @@ +/* + * Video Acceleration API (video transcoding) transcode sample + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * Intel VAAPI-accelerated transcoding example. + * + * @example vaapi_transcode.c + * This example shows how to do VAAPI-accelerated transcoding. + * Usage like: vaapi_transcode input_stream h264_vaapi output_stream + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +static AVFormatContext *ifmt_ctx = NULL; +static AVBufferRef *hw_device_ctx = NULL; +static AVCodecContext *decoder_ctx = NULL, *encoder_ctx = NULL; +static int video_stream = -1; +static FILE *fout = NULL; +static int initialized = 0; + +static enum AVPixelFormat get_vaapi_format(AVCodecContext *ctx, + const enum AVPixelFormat *pix_fmts) +{ + const enum AVPixelFormat *p; + + for (p = pix_fmts; *p != -1; p++) { + if (*p == AV_PIX_FMT_VAAPI) + return *p; + } + + fprintf(stderr, "Failed to get vaapi pix format\n"); + return AV_PIX_FMT_NONE; +} + +static int open_input_file(const char *filename) +{ + int ret; + AVCodec *decoder = NULL; + AVStream *video = NULL; + + if ((ret = avformat_open_input(&ifmt_ctx, filename, NULL, NULL)) < 0) { + fprintf(stderr, "Cannot open input file '%s', Error code: %s\n", filename, av_err2str(ret)); + return ret; + } + + if ((ret = avformat_find_stream_info(ifmt_ctx, NULL)) < 0) { + fprintf(stderr, "Cannot find input stream information. Error code: %s\n", av_err2str(ret)); + return ret; + } + + ret = av_find_best_stream(ifmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, &decoder, 0); + if (ret < 0) { + fprintf(stderr, "Cannot find a video stream in the input file.\ + Error code: %s\n", av_err2str(ret)); + return ret; + } + video_stream = ret; + + if (!(decoder_ctx = avcodec_alloc_context3(decoder))) + return AVERROR(ENOMEM); + + video = ifmt_ctx->streams[video_stream]; + if ((ret = avcodec_parameters_to_context(decoder_ctx, video->codecpar)) < 0) { + fprintf(stderr, "avcodec_parameters_to_context error. Error code: %s\n", av_err2str(ret)); + return ret; + } + + decoder_ctx->hw_device_ctx = av_buffer_ref(hw_device_ctx); + decoder_ctx->get_format = get_vaapi_format; + av_opt_set_int(decoder_ctx, "refcounted_frames", 1, 0); + + if ((ret = avcodec_open2(decoder_ctx, decoder, NULL)) < 0) + fprintf(stderr, "Failed to open codec for decoding. Error code: %s\n", av_err2str(ret)); + + return ret; +} + +static int encode_write(AVFrame *frame) +{ + int ret = 0; + AVPacket enc_pkt; + + av_init_packet(&enc_pkt); + enc_pkt.data = NULL; + enc_pkt.size = 0; + + if ((ret = avcodec_send_frame(encoder_ctx, frame)) < 0) { + fprintf(stderr, "Error during encoding. Error code: %s\n", av_err2str(ret)); + goto end; + } + while (1) { + ret = avcodec_receive_packet(encoder_ctx, &enc_pkt); + if (ret) + break; + + enc_pkt.stream_index = 0; + ret = fwrite(enc_pkt.data, 1, enc_pkt.size, fout); + } + +end: + ret = ((ret==AVERROR(EAGAIN)) ? 0:-1); + return ret; +} + +static int dec_enc(AVPacket *pkt, AVCodec *enc_codec) +{ + AVFrame *frame; + int ret = 0; + + ret = avcodec_send_packet(decoder_ctx, pkt); + if (ret < 0) { + fprintf(stderr, "Error during decoding. Error code: %s\n", av_err2str(ret)); + return ret; + } + + while (ret >= 0) { + if (!(frame = av_frame_alloc())) + return AVERROR(ENOMEM); + + ret = avcodec_receive_frame(decoder_ctx, frame); + if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) { + av_frame_free(&frame); + return 0; + } else if (ret < 0) { + fprintf(stderr, "Error while decoding. Error code: %s\n", av_err2str(ret)); + goto fail; + } + + if (!initialized) { + /* Here we need to ref hw_frames_ctx of decoder to initialize encoder's codec. + Only after we get a decoded frame, can we obtain its hw_frames_ctx */ + encoder_ctx->hw_frames_ctx = av_buffer_ref(decoder_ctx->hw_frames_ctx); + if (!encoder_ctx->hw_frames_ctx) { + ret = AVERROR(ENOMEM); + goto fail; + } + if ((ret = avcodec_open2(encoder_ctx, enc_codec, NULL)) < 0) { + fprintf(stderr, "Error while open encode codec. Error code: %s\n", av_err2str(ret)); + goto fail; + } + initialized = 1; + } + + if ((ret = encode_write(frame)) < 0) + fprintf(stderr, "Error during encoding and writing.\n"); + +fail: + av_frame_free(&frame); + if (ret < 0) + return ret; + } + return 0; +} + +int main(int argc, char **argv) { + int ret = 0; + AVPacket dec_pkt; + AVCodec *enc_codec; + + if (argc != 4) { + fprintf(stderr, "Usage: %s \n", argv[0]); + return -1; + } + + av_register_all(); + + ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI, NULL, NULL, 0); + if (ret < 0) { + fprintf(stderr, "Failed to create a VAAPI device. Error code: %s\n", av_err2str(ret)); + return -1; + } + + if ((ret = open_input_file(argv[1])) < 0) + goto end; + + if (!(enc_codec = avcodec_find_encoder_by_name(argv[2]))) { + fprintf(stderr, "Could not find encoder %s\n", argv[2]); + ret = AVERROR(ENOMEM); + goto end; + } + + if (!(fout = fopen(argv[3], "w+b"))) { + fprintf(stderr, "Failed to open output file: %s\n", strerror(errno)); + ret = -1; + goto end; + } + + if (!(encoder_ctx= avcodec_alloc_context3(enc_codec))) { + ret = AVERROR(ENOMEM); + goto end; + } + + /* set AVCodecContext Parameters */ + encoder_ctx->width = decoder_ctx->width; + encoder_ctx->height = decoder_ctx->height; + encoder_ctx->time_base = (AVRational){1, 25}; + encoder_ctx->pix_fmt = AV_PIX_FMT_VAAPI; + + /* read packets and transcoding */ + while (ret >= 0) { + if ((ret = av_read_frame(ifmt_ctx, &dec_pkt)) < 0) + break; + + if (video_stream == dec_pkt.stream_index) + ret = dec_enc(&dec_pkt, enc_codec); + + av_packet_unref(&dec_pkt); + } + + /* flush decoder/encoder */ + dec_pkt.data = NULL; + dec_pkt.size = 0; + ret = dec_enc(&dec_pkt, enc_codec); + av_packet_unref(&dec_pkt); + ret = encode_write(NULL); + +end: + if (ifmt_ctx) + avformat_close_input(&ifmt_ctx); + if (fout) + fclose(fout); + if (decoder_ctx) + avcodec_free_context(&decoder_ctx); + if(encoder_ctx) + avcodec_free_context(&encoder_ctx); + if(hw_device_ctx) + av_buffer_unref(&hw_device_ctx); + return ret; +}