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role="button" tabindex="0" aria-labelledby="button-expand-action display_screen_configuration-d4445e5106-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/display/display_panel_port.html" id="display_screen_configuration-d4445e5106-link">屏适配指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_xpy_32b_ybc-d4445e5134" class="topicref" data-id="concept_xpy_32b_ybc" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_xpy_32b_ybc-d4445e5134-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/display/display_fb_rotation.html" id="concept_xpy_32b_ybc-d4445e5134-link">屏幕旋转</a></div></div></li><li role="treeitem"><div data-tocid="display_change_color-d4445e5162" class="topicref" data-id="display_change_color" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/display/display_color_property.html" id="display_change_color-d4445e5162-link">色彩调整</a></div></div></li><li role="treeitem"><div data-tocid="display_boot_logo-d4445e5176" class="topicref" data-id="display_boot_logo" data-state="leaf"><span role="button" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/display/display_boot_logo.html" id="display_boot_logo-d4445e5176-link">Boot Logo</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="display_common_issues-d4445e5190" class="topicref" data-id="display_common_issues" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action display_common_issues-d4445e5190-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/display/display_faqs.html" id="display_common_issues-d4445e5190-link">常见问题</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_h4d_fwt_tzb-d4445e5218" class="topicref" data-id="concept_h4d_fwt_tzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_h4d_fwt_tzb-d4445e5218-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/dvp/dvp_user_guide.html" id="concept_h4d_fwt_tzb-d4445e5218-link">DVP 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="mpp-d4445e5358" class="topicref" data-id="mpp" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action mpp-d4445e5358-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mpp/mpp_user_guide.html" id="mpp-d4445e5358-link">MPP 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="mpp_0-d4445e5498" class="topicref" data-id="mpp_0" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action mpp_0-d4445e5498-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mpp/mpp_player_user_guide.html" id="mpp_0-d4445e5498-link">MPP 播放器使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="gstreamer-d4445e5582" class="topicref" data-id="gstreamer" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action gstreamer-d4445e5582-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/gstreamer/gstreamer-user-guide.html" id="gstreamer-d4445e5582-link">Gstreamer 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="i2s-d4445e5680" class="topicref" data-id="i2s" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action i2s-d4445e5680-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/i2s/i2s_user_guide.html" id="i2s-d4445e5680-link">I2S 使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="audio_codec_user_guide-d4445e5806" class="topicref" data-id="audio_codec_user_guide" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action audio_codec_user_guide-d4445e5806-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/audio_codec/audio-codec-user-guide.html" id="audio_codec_user_guide-d4445e5806-link">Audio Codec 使用指南</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_nww_hzh_pzb-d4445e5947" class="topicref" data-id="concept_nww_hzh_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_nww_hzh_pzb-d4445e5947-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-interface-sdk.html" id="concept_nww_hzh_pzb-d4445e5947-link">接口</a><div class="wh-tooltip"><p class="shortdesc">CAN、CIR、GPAI、GPIO、I2C、PSADC、PWM 等接口模块的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-safety-d4445e7944" class="topicref" data-id="chapter-safety" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-safety-d4445e7944-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-safety-sdk.html" id="chapter-safety-d4445e7944-link">安全</a><div class="wh-tooltip"><p class="shortdesc">SPI ENC、CE、eFuse 等安全模块的介绍和使用说明。</p></div></div></div></li></ul></li></ul></div>
|
||
|
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|
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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" role="article" aria-labelledby="ariaid-title1">
|
||
<span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" title="Edit this document" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/display/display_demo.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">Demo</h1>
|
||
|
||
<div class="date inPage">15 Jan 2024</div><div style="color: gray;">
|
||
Read time: 25 minute(s)
|
||
</div>
|
||
<div class="- topic/body concept/conbody body conbody">
|
||
<section class="- topic/section section" id="display_demo__section_s1j_zdg_d1c" data-ofbid="display_demo__section_s1j_zdg_d1c"><h2 class="- topic/title title sectiontitle">Framebuffer 标准接口的使用</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d46404e38__20250123155200">标准 framebuffer 接口操作示例:<pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="display_demo__codeblock_efx_12g_d1c" data-ofbid="display_demo__codeblock_efx_12g_d1c"><code><strong class="hl-keyword">int</strong> main()
|
||
{
|
||
<strong class="hl-keyword">int</strong> fd = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">struct</strong> fb_var_screeninfo vi;
|
||
<strong class="hl-keyword">struct</strong> fb_fix_screeninfo fi;
|
||
|
||
<strong class="hl-keyword">void</strong> *fb_ptr = NULL;
|
||
|
||
fd = open(<span class="hl-string">"/dev/fb0"</span>, O_RDWR);
|
||
<strong class="hl-keyword">if</strong> (fd < <span class="hl-number">0</span>) {
|
||
printf(<span class="hl-string">"failed to open fb0\n"</span>);
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
|
||
<em class="hl-comment">// 获取可变屏幕参数，如分辨率，像素格式</em>
|
||
<strong class="hl-keyword">if</strong> (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < <span class="hl-number">0</span>) {
|
||
printf(<span class="hl-string">"failed to get fb0 info\n"</span>);
|
||
close(fd);
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
|
||
<em class="hl-comment">// 获取屏幕固定参数，包括显存起始物理地址、显存大小和行间距</em>
|
||
<strong class="hl-keyword">if</strong> (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < <span class="hl-number">0</span>) {
|
||
printf(<span class="hl-string">"failed to get fb0 info\n"</span>);
|
||
close(fd);
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
|
||
<em class="hl-comment">// framebuffer 缓冲区映射到用户空间：</em>
|
||
fb_ptr = mmap(<span class="hl-number">0</span>, fi.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, <span class="hl-number">0</span>);
|
||
<strong class="hl-keyword">if</strong> (fb_ptr == MAP_FAILED) {
|
||
printf(<span class="hl-string">"failed to mmap framebuffer\n"</span>);
|
||
close(fd);
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
|
||
<em class="hl-comment">// 用户可以直接把要显示到屏幕的图像数据写入 ptr 即可</em>
|
||
........
|
||
........
|
||
|
||
munmap(fb_ptr, fi.smem_len);
|
||
close(fd);
|
||
|
||
<strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
|
||
}</code></pre></div>
|
||
</section>
|
||
<section class="- topic/section section" id="display_demo__section_u1j_zdg_d1c" data-ofbid="display_demo__section_u1j_zdg_d1c"><h2 class="- topic/title title sectiontitle">AICFB 扩展接口的使用</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d46404e49__20250123155200">代码详见
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">source/artinchip/test-fb/test_fb.c</span><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="display_demo__codeblock_rjd_b2g_d1c" data-ofbid="display_demo__codeblock_rjd_b2g_d1c"><code><em class="hl-comment">// SPDX-License-Identifier: GPL-2.0-only</em>
|
||
<em class="hl-comment">/*
|
||
* Copyright (C) 2020-2021 ArtInChip Technology Co., Ltd.
|
||
* Authors: Matteo <duanmt@artinchip.com>
|
||
*/</em>
|
||
|
||
#include <span class="hl-string">"base.h"</span>
|
||
#include <span class="hl-string">"artinchip_fb.h"</span>
|
||
|
||
<em class="hl-comment">/* Global macro and variables */</em>
|
||
|
||
#<span class="hl-directive">define</span> AICFB_LAYER_MAX_NUM <span class="hl-number">2</span>
|
||
#<span class="hl-directive">define</span> FB_DEV <span class="hl-string">"/dev/fb0"</span>
|
||
|
||
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">const</strong> <strong class="hl-keyword">char</strong> sopts[] = <span class="hl-string">"nscflLaAkKedw:h:m:v:u"</span>;
|
||
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">const</strong> <strong class="hl-keyword">struct</strong> option lopts[] = {
|
||
{<span class="hl-string">"get_layer_num"</span>, no_argument, NULL, <span class="hl-string">'n'</span>},
|
||
{<span class="hl-string">"get_screen_size"</span>, no_argument, NULL, <span class="hl-string">'s'</span>},
|
||
{<span class="hl-string">"get_layer_cap"</span>, no_argument, NULL, <span class="hl-string">'c'</span>},
|
||
{<span class="hl-string">"get_fb_layer"</span>, no_argument, NULL, <span class="hl-string">'f'</span>},
|
||
{<span class="hl-string">"get_layer"</span>, no_argument, NULL, <span class="hl-string">'l'</span>},
|
||
{<span class="hl-string">"set_layer"</span>, no_argument, NULL, <span class="hl-string">'L'</span>},
|
||
{<span class="hl-string">"get_alpha"</span>, no_argument, NULL, <span class="hl-string">'a'</span>},
|
||
{<span class="hl-string">"set_alpha"</span>, required_argument, NULL, <span class="hl-string">'A'</span>},
|
||
{<span class="hl-string">"get_ck_cfg"</span>, no_argument, NULL, <span class="hl-string">'k'</span>},
|
||
{<span class="hl-string">"set_ck_cfg"</span>, no_argument, NULL, <span class="hl-string">'K'</span>},
|
||
{<span class="hl-string">"enable"</span>, no_argument, NULL, <span class="hl-string">'e'</span>},
|
||
{<span class="hl-string">"disable"</span>, no_argument, NULL, <span class="hl-string">'d'</span>},
|
||
{<span class="hl-string">"id"</span>, required_argument, NULL, <span class="hl-string">'i'</span>},
|
||
{<span class="hl-string">"width"</span>, required_argument, NULL, <span class="hl-string">'w'</span>},
|
||
{<span class="hl-string">"height"</span>, required_argument, NULL, <span class="hl-string">'h'</span>},
|
||
{<span class="hl-string">"mode"</span>, required_argument, NULL, <span class="hl-string">'m'</span>},
|
||
{<span class="hl-string">"value"</span>, required_argument, NULL, <span class="hl-string">'v'</span>},
|
||
{<span class="hl-string">"usage"</span>, no_argument, NULL, <span class="hl-string">'u'</span>},
|
||
{<span class="hl-number">0</span>, <span class="hl-number">0</span>, <span class="hl-number">0</span>, <span class="hl-number">0</span>}
|
||
};
|
||
|
||
<em class="hl-comment">/* Functions */</em>
|
||
|
||
<strong class="hl-keyword">void</strong> usage(<strong class="hl-keyword">char</strong> *program)
|
||
{
|
||
printf(<span class="hl-string">"Usage: %s [options]: \n"</span>, program);
|
||
printf(<span class="hl-string">"\t -n, --get_layer_num \n"</span>);
|
||
printf(<span class="hl-string">"\t -s, --get_screen_size \n"</span>);
|
||
printf(<span class="hl-string">"\t -c, --get_layer_cap \n"</span>);
|
||
printf(<span class="hl-string">"\t -f, --get_fb_layer \n"</span>);
|
||
printf(<span class="hl-string">"\t -l, --get_layer \n"</span>);
|
||
printf(<span class="hl-string">"\t -L, --set_layer\tneed other options: -i x -e/d -w y -h z\n"</span>);
|
||
printf(<span class="hl-string">"\t -a, --get_alpha \n"</span>);
|
||
printf(<span class="hl-string">"\t -A, --set_alpha\tneed other options: -e/d -m x -v y \n"</span>);
|
||
printf(<span class="hl-string">"\t -k, --get_ck_cfg \n"</span>);
|
||
printf(<span class="hl-string">"\t -K, --set_ck_cfg\tneed other options: -e/d -v x \n"</span>);
|
||
printf(<span class="hl-string">"\t -e, --enable \n"</span>);
|
||
printf(<span class="hl-string">"\t -d, --disable \n"</span>);
|
||
printf(<span class="hl-string">"\t -i, --id\t\tneed an integer argument of Layer ID\n"</span>);
|
||
printf(<span class="hl-string">"\t -w, --width\t\tneed an integer argument\n"</span>);
|
||
printf(<span class="hl-string">"\t -h, --height\t\tneed an integer argument\n"</span>);
|
||
printf(<span class="hl-string">"\t -m, --mode\t\tneed an integer argument\n"</span>);
|
||
printf(<span class="hl-string">"\t -v, --value\t\tneed an integer argument\n"</span>);
|
||
printf(<span class="hl-string">"\t -u, --usage \n"</span>);
|
||
printf(<span class="hl-string">"\n"</span>);
|
||
printf(<span class="hl-string">"Example: %s -l\n"</span>, program);
|
||
printf(<span class="hl-string">"Example: %s -L -i 1 -e -w 800 -h 480\n"</span>, program);
|
||
printf(<span class="hl-string">"Example: %s -A -e -w 800 -h 480\n"</span>, program);
|
||
printf(<span class="hl-string">"Example: %s -K -e -v 0x3F\n"</span>, program);
|
||
}
|
||
|
||
<em class="hl-comment">/* Open a device file to be needed. */</em>
|
||
<strong class="hl-keyword">int</strong> device_open(<strong class="hl-keyword">char</strong> *_fname, <strong class="hl-keyword">int</strong> _flag)
|
||
{
|
||
s32 fd = -<span class="hl-number">1</span>;
|
||
|
||
fd = open(_fname, _flag);
|
||
<strong class="hl-keyword">if</strong> (fd < <span class="hl-number">0</span>) {
|
||
ERR(<span class="hl-string">"Failed to open %s"</span>, _fname);
|
||
exit(<span class="hl-number">0</span>);
|
||
}
|
||
<strong class="hl-keyword">return</strong> fd;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> get_layer_num(<strong class="hl-keyword">int</strong> fd)
|
||
{
|
||
<strong class="hl-keyword">int</strong> ret = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">struct</strong> aicfb_layer_num n = {<span class="hl-number">0</span>};
|
||
|
||
ret = ioctl(fd, AICFB_GET_LAYER_NUM, &n);
|
||
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>) {
|
||
ERR(<span class="hl-string">"ioctl() return %d\n"</span>, ret);
|
||
}
|
||
<strong class="hl-keyword">else</strong> {
|
||
printf(<span class="hl-string">"The number of video layer: %d\n"</span>, n.vi_num);
|
||
printf(<span class="hl-string">"The number of UI layer: %d\n"</span>, n.ui_num);
|
||
}
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> get_layer_cap(<strong class="hl-keyword">int</strong> fd)
|
||
{
|
||
<strong class="hl-keyword">int</strong> i;
|
||
<strong class="hl-keyword">int</strong> ret = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">struct</strong> aicfb_layer_capability cap = {<span class="hl-number">0</span>};
|
||
|
||
<strong class="hl-keyword">for</strong> (i = <span class="hl-number">0</span>; i < AICFB_LAYER_MAX_NUM; i++) {
|
||
memset(&cap, <span class="hl-number">0</span>, <strong class="hl-keyword">sizeof</strong>(<strong class="hl-keyword">struct</strong> aicfb_layer_capability));
|
||
cap.layer_id = i;
|
||
ret = ioctl(fd, AICFB_GET_LAYER_CAPABILITY, &cap);
|
||
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>) {
|
||
ERR(<span class="hl-string">"ioctl() return %d\n"</span>, ret);
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
printf(<span class="hl-string">"\n--------------- Layer %d ---------------\n"</span>, i);
|
||
printf(<span class="hl-string">"Type: %s\n"</span>, cap.layer_type == AICFB_LAYER_TYPE_VIDEO ?
|
||
<span class="hl-string">"Video"</span> : <span class="hl-string">"UI"</span>);
|
||
printf(<span class="hl-string">"Max Width: %d (%#x)\n"</span>, cap.max_width, cap.max_width);
|
||
printf(<span class="hl-string">"Max height: %d (%#x)\n"</span>, cap.max_height, cap.max_height);
|
||
printf(<span class="hl-string">"Flag: %#x\n"</span>, cap.cap_flags);
|
||
printf(<span class="hl-string">"---------------------------------------\n"</span>);
|
||
}
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> get_one_layer_cfg(<strong class="hl-keyword">int</strong> fd, <strong class="hl-keyword">int</strong> cmd, <strong class="hl-keyword">int</strong> id)
|
||
{
|
||
<strong class="hl-keyword">int</strong> ret = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">struct</strong> aicfb_layer_data layer = {<span class="hl-number">0</span>};
|
||
|
||
layer.layer_id = id;
|
||
ret = ioctl(fd, cmd, &layer);
|
||
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>) {
|
||
ERR(<span class="hl-string">"ioctl() return %d\n"</span>, ret);
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
printf(<span class="hl-string">"\n--------------- Layer %d ---------------\n"</span>, layer.layer_id);
|
||
printf(<span class="hl-string">"Enable: %d\n"</span>, layer.enable);
|
||
printf(<span class="hl-string">"Layer ID: %d\n"</span>, layer.layer_id);
|
||
printf(<span class="hl-string">"Rect ID: %d\n"</span>, layer.rect_id);
|
||
printf(<span class="hl-string">"Scale Size: w %d, h %d\n"</span>,
|
||
layer.scale_size.width, layer.scale_size.height);
|
||
printf(<span class="hl-string">"Position: x %d, y %d\n"</span>, layer.pos.x, layer.pos.y);
|
||
printf(<span class="hl-string">"Buffer: \n"</span>);
|
||
printf(<span class="hl-string">"\tPixel format: %#x\n"</span>, layer.buf.format);
|
||
printf(<span class="hl-string">"\tPhysical addr: %#x %#x %#x\n"</span>,
|
||
layer.buf.phy_addr[<span class="hl-number">0</span>], layer.buf.phy_addr[<span class="hl-number">1</span>],
|
||
layer.buf.phy_addr[<span class="hl-number">2</span>]);
|
||
printf(<span class="hl-string">"\tStride: %d %d %d\n"</span>, layer.buf.stride[<span class="hl-number">0</span>],
|
||
layer.buf.stride[<span class="hl-number">1</span>], layer.buf.stride[<span class="hl-number">2</span>]);
|
||
printf(<span class="hl-string">"\tSize: w %d, h %d\n"</span>,
|
||
layer.buf.size.width, layer.buf.size.height);
|
||
printf(<span class="hl-string">"\tCrop enable: %d\n"</span>, layer.buf.crop_en);
|
||
printf(<span class="hl-string">"\tCrop: x %d, y %d, w %d, h %d\n"</span>,
|
||
layer.buf.crop.x, layer.buf.crop.y,
|
||
layer.buf.crop.width, layer.buf.crop.height);
|
||
printf(<span class="hl-string">"\tFlag: %#x\n"</span>, layer.buf.buf_flags);
|
||
printf(<span class="hl-string">"---------------------------------------\n"</span>);
|
||
|
||
<strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> get_fb_layer_cfg(<strong class="hl-keyword">int</strong> fd)
|
||
{
|
||
<strong class="hl-keyword">return</strong> get_one_layer_cfg(fd, AICFB_GET_FB_LAYER_CONFIG, <span class="hl-number">0</span>);
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> get_layer_cfg(<strong class="hl-keyword">int</strong> fd)
|
||
{
|
||
<strong class="hl-keyword">int</strong> i;
|
||
|
||
<strong class="hl-keyword">for</strong> (i = <span class="hl-number">0</span>; i < AICFB_LAYER_MAX_NUM; i++)
|
||
get_one_layer_cfg(fd, AICFB_GET_LAYER_CONFIG, i);
|
||
|
||
<strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> set_layer_cfg(<strong class="hl-keyword">int</strong> fd, <strong class="hl-keyword">int</strong> id, <strong class="hl-keyword">int</strong> enable, <strong class="hl-keyword">int</strong> width, <strong class="hl-keyword">int</strong> height)
|
||
{
|
||
<strong class="hl-keyword">int</strong> ret = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">struct</strong> aicfb_layer_data layer = {<span class="hl-number">0</span>};
|
||
|
||
<strong class="hl-keyword">if</strong> ((id < <span class="hl-number">0</span>) || (enable < <span class="hl-number">0</span>) || (width < <span class="hl-number">0</span>) || (height < <span class="hl-number">0</span>)) {
|
||
ERR(<span class="hl-string">"Invalid argument.\n"</span>);
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
|
||
layer.layer_id = id;
|
||
layer.enable = enable;
|
||
layer.scale_size.width = layer.buf.size.width;
|
||
layer.scale_size.height = layer.buf.size.height;
|
||
ret = ioctl(fd, AICFB_UPDATE_LAYER_CONFIG, &layer);
|
||
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>)
|
||
ERR(<span class="hl-string">"ioctl() return %d\n"</span>, ret);
|
||
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> get_layer_alpha(<strong class="hl-keyword">int</strong> fd)
|
||
{
|
||
<strong class="hl-keyword">int</strong> i;
|
||
<strong class="hl-keyword">int</strong> ret = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">struct</strong> aicfb_alpha_config alpha = {<span class="hl-number">0</span>};
|
||
|
||
<strong class="hl-keyword">for</strong> (i = <span class="hl-number">1</span>; i < AICFB_LAYER_MAX_NUM; i++) {
|
||
alpha.layer_id = i;
|
||
ret = ioctl(fd, AICFB_GET_ALPHA_CONFIG, &alpha);
|
||
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>) {
|
||
ERR(<span class="hl-string">"ioctl() return %d\n"</span>, ret);
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
printf(<span class="hl-string">"\n--------------- Layer %d ---------------\n"</span>, i);
|
||
printf(<span class="hl-string">"Alpha enable: %d\n"</span>, alpha.enable);
|
||
printf(<span class="hl-string">"Alpla mode: %d (0, pixel; 1, global; 2, mix)\n"</span>,
|
||
alpha.mode);
|
||
printf(<span class="hl-string">"Alpha value: %d (%#x)\n"</span>, alpha.value, alpha.value);
|
||
printf(<span class="hl-string">"---------------------------------------\n"</span>);
|
||
}
|
||
|
||
<strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> set_layer_alpha(<strong class="hl-keyword">int</strong> fd, <strong class="hl-keyword">int</strong> enable, <strong class="hl-keyword">int</strong> mode, <strong class="hl-keyword">int</strong> val)
|
||
{
|
||
<strong class="hl-keyword">int</strong> ret = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">struct</strong> aicfb_alpha_config alpha = {<span class="hl-number">0</span>};
|
||
|
||
<strong class="hl-keyword">if</strong> ((enable < <span class="hl-number">0</span>) || (mode < <span class="hl-number">0</span>) || (val < <span class="hl-number">0</span>)) {
|
||
ERR(<span class="hl-string">"Invalid argument.\n"</span>);
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
|
||
alpha.layer_id = <span class="hl-number">1</span>;
|
||
alpha.enable = enable;
|
||
alpha.mode = mode;
|
||
alpha.value = val;
|
||
ret = ioctl(fd, AICFB_UPDATE_ALPHA_CONFIG, &alpha);
|
||
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>)
|
||
ERR(<span class="hl-string">"ioctl() return %d\n"</span>, ret);
|
||
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> get_ck_cfg(<strong class="hl-keyword">int</strong> fd)
|
||
{
|
||
<strong class="hl-keyword">int</strong> i;
|
||
<strong class="hl-keyword">int</strong> ret = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">struct</strong> aicfb_ck_config ck = {<span class="hl-number">0</span>};
|
||
|
||
<strong class="hl-keyword">for</strong> (i = <span class="hl-number">1</span>; i < AICFB_LAYER_MAX_NUM; i++) {
|
||
ck.layer_id = i;
|
||
ret = ioctl(fd, AICFB_GET_CK_CONFIG, &ck);
|
||
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>) {
|
||
ERR(<span class="hl-string">"ioctl() return %d\n"</span>, ret);
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
printf(<span class="hl-string">"\n--------------- Layer %d ---------------\n"</span>, i);
|
||
printf(<span class="hl-string">"Color key enable: %d\n"</span>, ck.enable);
|
||
printf(<span class="hl-string">"Color key value: R %#x, G %#x, B %#x\n"</span>,
|
||
(ck.value >> <span class="hl-number">16</span>) & <span class="hl-number">0xFF</span>, (ck.value >> <span class="hl-number">8</span>) & <span class="hl-number">0xFF</span>,
|
||
ck.value & <span class="hl-number">0xFF</span>);
|
||
printf(<span class="hl-string">"---------------------------------------\n"</span>);
|
||
}
|
||
<strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> set_ck_cfg(<strong class="hl-keyword">int</strong> fd, <strong class="hl-keyword">int</strong> enable, <strong class="hl-keyword">int</strong> val)
|
||
{
|
||
<strong class="hl-keyword">int</strong> ret = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">struct</strong> aicfb_ck_config ck = {<span class="hl-number">0</span>};
|
||
|
||
<strong class="hl-keyword">if</strong> ((enable < <span class="hl-number">0</span>) || (val < <span class="hl-number">0</span>)) {
|
||
ERR(<span class="hl-string">"Invalid argument.\n"</span>);
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
|
||
ck.layer_id = <span class="hl-number">1</span>;
|
||
ck.enable = enable;
|
||
ck.value = val;
|
||
ret = ioctl(fd, AICFB_UPDATE_CK_CONFIG, &ck);
|
||
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>)
|
||
ERR(<span class="hl-string">"ioctl() return %d\n"</span>, ret);
|
||
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> get_screen_size(<strong class="hl-keyword">int</strong> fd)
|
||
{
|
||
<strong class="hl-keyword">int</strong> ret = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">struct</strong> aic_size s = {<span class="hl-number">0</span>};
|
||
|
||
ret = ioctl(fd, AICFB_GET_SCREEN_SIZE, &s);
|
||
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>) {
|
||
ERR(<span class="hl-string">"ioctl() return %d\n"</span>, ret);
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
printf(<span class="hl-string">"Screen width: %d (%#x)\n"</span>, s.width, s.width);
|
||
printf(<span class="hl-string">"Screen height: %d (%#x)\n"</span>, s.height, s.height);
|
||
<strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> main(<strong class="hl-keyword">int</strong> argc, <strong class="hl-keyword">char</strong> **argv)
|
||
{
|
||
<strong class="hl-keyword">int</strong> dev_fd = -<span class="hl-number">1</span>;
|
||
<strong class="hl-keyword">int</strong> ret = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">int</strong> c = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">int</strong> layer_id = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">int</strong> enable = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">int</strong> mode = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">int</strong> width = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">int</strong> height = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">int</strong> value = <span class="hl-number">0</span>;
|
||
|
||
dev_fd = device_open(FB_DEV, O_RDWR);
|
||
<strong class="hl-keyword">if</strong> (dev_fd < <span class="hl-number">0</span>) {
|
||
ERR(<span class="hl-string">"Failed to open %s, return %d\n"</span>, FB_DEV, dev_fd);
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
|
||
<strong class="hl-keyword">while</strong> ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -<span class="hl-number">1</span>) {
|
||
<strong class="hl-keyword">switch</strong> (c) {
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'n'</span>:
|
||
ret = get_layer_num(dev_fd);
|
||
<strong class="hl-keyword">goto</strong> end;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'s'</span>:
|
||
ret = get_screen_size(dev_fd);
|
||
<strong class="hl-keyword">goto</strong> end;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'c'</span>:
|
||
ret = get_layer_cap(dev_fd);
|
||
<strong class="hl-keyword">goto</strong> end;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'f'</span>:
|
||
ret = get_fb_layer_cfg(dev_fd);
|
||
<strong class="hl-keyword">goto</strong> end;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'l'</span>:
|
||
ret = get_layer_cfg(dev_fd);
|
||
<strong class="hl-keyword">goto</strong> end;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'a'</span>:
|
||
ret = get_layer_alpha(dev_fd);
|
||
<strong class="hl-keyword">goto</strong> end;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'k'</span>:
|
||
ret = get_ck_cfg(dev_fd);
|
||
<strong class="hl-keyword">goto</strong> end;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'e'</span>:
|
||
enable = <span class="hl-number">1</span>;
|
||
<strong class="hl-keyword">continue</strong>;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'d'</span>:
|
||
enable = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">continue</strong>;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'i'</span>:
|
||
layer_id = str2int(optarg);
|
||
<strong class="hl-keyword">continue</strong>;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'w'</span>:
|
||
width = str2int(optarg);
|
||
<strong class="hl-keyword">continue</strong>;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'h'</span>:
|
||
height = str2int(optarg);
|
||
<strong class="hl-keyword">continue</strong>;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'m'</span>:
|
||
mode = str2int(optarg);
|
||
<strong class="hl-keyword">continue</strong>;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'v'</span>:
|
||
value = str2int(optarg);
|
||
<strong class="hl-keyword">continue</strong>;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'u'</span>:
|
||
usage(argv[<span class="hl-number">0</span>]);
|
||
<strong class="hl-keyword">goto</strong> end;
|
||
<strong class="hl-keyword">default</strong>:
|
||
<strong class="hl-keyword">continue</strong>;
|
||
}
|
||
}
|
||
|
||
optind = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">while</strong> ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -<span class="hl-number">1</span>) {
|
||
<strong class="hl-keyword">switch</strong> (c) {
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'L'</span>:
|
||
ret = set_layer_cfg(dev_fd, layer_id, enable, width, height);
|
||
<strong class="hl-keyword">goto</strong> end;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'A'</span>:
|
||
ret = set_layer_alpha(dev_fd, enable, mode, value);
|
||
<strong class="hl-keyword">goto</strong> end;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'K'</span>:
|
||
ret = set_ck_cfg(dev_fd, enable, value);
|
||
<strong class="hl-keyword">goto</strong> end;
|
||
<strong class="hl-keyword">default</strong>:
|
||
<strong class="hl-keyword">continue</strong>;
|
||
}
|
||
}
|
||
|
||
end:
|
||
<strong class="hl-keyword">if</strong> (dev_fd > <span class="hl-number">0</span>)
|
||
close(dev_fd);
|
||
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}</code></pre></div>
|
||
</section>
|
||
<section class="- topic/section section" id="display_demo__section_w1j_zdg_d1c" data-ofbid="display_demo__section_w1j_zdg_d1c"><h2 class="- topic/title title sectiontitle">DMA-BUF 的使用</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d46404e62__20250123155200">代码详见
|
||
<span class="+ topic/ph sw-d/filepath ph filepath">source/artinchip/test-dma-buf/</span><pre class="+ topic/pre pr-d/codeblock pre codeblock language-c" id="display_demo__codeblock_rx2_b2g_d1c" data-ofbid="display_demo__codeblock_rx2_b2g_d1c"><code><em class="hl-comment">// SPDX-License-Identifier: GPL-2.0-only</em>
|
||
<em class="hl-comment">/*
|
||
* Copyright (C) 2020-2021 ArtInChip Technology Co., Ltd.
|
||
* Authors: Matteo <duanmt@artinchip.com>
|
||
*/</em>
|
||
|
||
#include <artinchip/sample_base.h>
|
||
#include <linux/dma-buf.h>
|
||
#include <linux/dma-heap.h>
|
||
#include <video/artinchip_fb.h>
|
||
|
||
<em class="hl-comment">/* Global macro and variables */</em>
|
||
|
||
#<span class="hl-directive">define</span> AICFB_VID_BUF_NUM <span class="hl-number">2</span>
|
||
#<span class="hl-directive">define</span> AIC_CMA_BUF_MAX (<span class="hl-number">8</span> * <span class="hl-number">1024</span> * <span class="hl-number">1024</span>)
|
||
#<span class="hl-directive">define</span> DMA_HEAP_DEV <span class="hl-string">"/dev/dma_heap/reserved"</span>
|
||
#<span class="hl-directive">define</span> FB_DEV <span class="hl-string">"/dev/fb0"</span>
|
||
|
||
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">const</strong> <strong class="hl-keyword">char</strong> sopts[] = <span class="hl-string">"m:w:h:f:i:u"</span>;
|
||
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">const</strong> <strong class="hl-keyword">struct</strong> option lopts[] = {
|
||
{<span class="hl-string">"width"</span>, required_argument, NULL, <span class="hl-string">'w'</span>},
|
||
{<span class="hl-string">"height"</span>, required_argument, NULL, <span class="hl-string">'h'</span>},
|
||
{<span class="hl-string">"format"</span>, required_argument, NULL, <span class="hl-string">'f'</span>},
|
||
{<span class="hl-string">"input"</span>, required_argument, NULL, <span class="hl-string">'i'</span>},
|
||
{<span class="hl-string">"usage"</span>, no_argument, NULL, <span class="hl-string">'u'</span>},
|
||
{<span class="hl-number">0</span>, <span class="hl-number">0</span>, <span class="hl-number">0</span>, <span class="hl-number">0</span>}
|
||
};
|
||
|
||
<strong class="hl-keyword">struct</strong> video_data_format {
|
||
<strong class="hl-keyword">enum</strong> aic_pixel_format format;
|
||
<strong class="hl-keyword">char</strong> f_str[<span class="hl-number">12</span>];
|
||
<strong class="hl-keyword">int</strong> y_shift;
|
||
<strong class="hl-keyword">int</strong> u_shift;
|
||
<strong class="hl-keyword">int</strong> v_shift;
|
||
};
|
||
|
||
<strong class="hl-keyword">struct</strong> video_data_format g_vformat[] = {
|
||
{AIC_FMT_YUV420P, <span class="hl-string">"yuv420p"</span>, <span class="hl-number">0</span>, <span class="hl-number">2</span>, <span class="hl-number">2</span>},
|
||
{AIC_FMT_YUV422P, <span class="hl-string">"yuv422p"</span>, <span class="hl-number">0</span>, <span class="hl-number">1</span>, <span class="hl-number">1</span>},
|
||
{AIC_FMT_YUV444P, <span class="hl-string">"yuv444p"</span>, <span class="hl-number">0</span>, <span class="hl-number">0</span>, <span class="hl-number">0</span>},
|
||
|
||
{AIC_FMT_MAX, <span class="hl-string">""</span>, <span class="hl-number">0</span>, <span class="hl-number">0</span>, <span class="hl-number">0</span>}
|
||
};
|
||
|
||
<strong class="hl-keyword">struct</strong> video_plane {
|
||
<strong class="hl-keyword">int</strong> fd;
|
||
<strong class="hl-keyword">char</strong> *buf;
|
||
<strong class="hl-keyword">int</strong> len;
|
||
};
|
||
|
||
<strong class="hl-keyword">struct</strong> video_buf {
|
||
<strong class="hl-keyword">struct</strong> video_plane y;
|
||
<strong class="hl-keyword">struct</strong> video_plane u;
|
||
<strong class="hl-keyword">struct</strong> video_plane v;
|
||
};
|
||
|
||
<strong class="hl-keyword">struct</strong> aicfb_video_layer {
|
||
<strong class="hl-keyword">int</strong> w;
|
||
<strong class="hl-keyword">int</strong> h;
|
||
<strong class="hl-keyword">struct</strong> video_data_format *f;
|
||
<strong class="hl-keyword">struct</strong> video_buf vbuf[AICFB_VID_BUF_NUM];
|
||
};
|
||
|
||
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">int</strong> g_fb_fd = -<span class="hl-number">1</span>;
|
||
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">struct</strong> aicfb_video_layer g_vlayer = {<span class="hl-number">0</span>};
|
||
|
||
<em class="hl-comment">/* Functions */</em>
|
||
|
||
<strong class="hl-keyword">void</strong> usage(<strong class="hl-keyword">char</strong> *program)
|
||
{
|
||
printf(<span class="hl-string">"Usage: %s [options]: \n"</span>, program);
|
||
printf(<span class="hl-string">"\t -w, --width\t\tneed an integer argument\n"</span>);
|
||
printf(<span class="hl-string">"\t -h, --height\t\tneed an integer argument\n"</span>);
|
||
printf(<span class="hl-string">"\t -f, --format\t\tvideo format, yuv420p etc\n"</span>);
|
||
printf(<span class="hl-string">"\t -i, --input\t\tneed a file name \n"</span>);
|
||
printf(<span class="hl-string">"\t -u, --usage \n"</span>);
|
||
printf(<span class="hl-string">"\n"</span>);
|
||
printf(<span class="hl-string">"Example: %s -w 480 -h 320 -f yuv420p -i my.yuv\n"</span>, program);
|
||
}
|
||
|
||
<em class="hl-comment">/* Open a device file to be needed. */</em>
|
||
<strong class="hl-keyword">int</strong> device_open(<strong class="hl-keyword">char</strong> *_fname, <strong class="hl-keyword">int</strong> _flag)
|
||
{
|
||
s32 fd = -<span class="hl-number">1</span>;
|
||
|
||
fd = open(_fname, _flag);
|
||
<strong class="hl-keyword">if</strong> (fd < <span class="hl-number">0</span>) {
|
||
ERR(<span class="hl-string">"Failed to open %s"</span>, _fname);
|
||
exit(<span class="hl-number">0</span>);
|
||
}
|
||
<strong class="hl-keyword">return</strong> fd;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> vidbuf_request_one(<strong class="hl-keyword">struct</strong> video_plane *plane, <strong class="hl-keyword">int</strong> len, <strong class="hl-keyword">int</strong> fd)
|
||
{
|
||
<strong class="hl-keyword">int</strong> ret;
|
||
<strong class="hl-keyword">char</strong> *buf = NULL;
|
||
<strong class="hl-keyword">struct</strong> dma_heap_allocation_data data = {<span class="hl-number">0</span>};
|
||
|
||
<strong class="hl-keyword">if</strong> ((len < <span class="hl-number">0</span>) || (len > AIC_CMA_BUF_MAX)) {
|
||
ERR(<span class="hl-string">"Invalid len %d\n"</span>, len);
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
|
||
data.fd = <span class="hl-number">0</span>;
|
||
data.len = len;
|
||
data.fd_flags = O_RDWR;
|
||
data.heap_flags = <span class="hl-number">0</span>;
|
||
ret = ioctl(fd, DMA_HEAP_IOCTL_ALLOC, &data);
|
||
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>) {
|
||
ERR(<span class="hl-string">"ioctl() failed! errno: %d[%s]\n"</span>, errno, strerror(errno));
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
|
||
DBG(<span class="hl-string">"Get dma_heap fd: %d\n"</span>, data.fd);
|
||
plane->fd = data.fd;
|
||
|
||
buf = mmap(NULL, len, PROT_READ|PROT_WRITE, MAP_SHARED, data.fd, <span class="hl-number">0</span>);
|
||
<strong class="hl-keyword">if</strong> (buf == MAP_FAILED) {
|
||
ERR(<span class="hl-string">"mmap() failed! errno: %d[%s]\n"</span>, errno, strerror(errno));
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
DBG(<span class="hl-string">"Get virtual address: %p\n"</span>, buf);
|
||
plane->buf = buf;
|
||
plane->len = len;
|
||
<strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
|
||
}
|
||
|
||
<strong class="hl-keyword">void</strong> aic_fb_open(<strong class="hl-keyword">void</strong>)
|
||
{
|
||
<strong class="hl-keyword">if</strong> (g_fb_fd > <span class="hl-number">0</span>)
|
||
<strong class="hl-keyword">return</strong>;
|
||
|
||
g_fb_fd = device_open(FB_DEV, O_RDWR);
|
||
<strong class="hl-keyword">if</strong> (g_fb_fd < <span class="hl-number">0</span>)
|
||
ERR(<span class="hl-string">"Failed to open %s. errno: %d[%s]\n"</span>,
|
||
FB_DEV, errno, strerror(errno));
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> set_ui_layer_alpha(<strong class="hl-keyword">int</strong> val)
|
||
{
|
||
<strong class="hl-keyword">int</strong> ret = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">struct</strong> aicfb_alpha_config alpha = {<span class="hl-number">0</span>};
|
||
|
||
alpha.layer_id = <span class="hl-number">1</span>;
|
||
alpha.enable = <span class="hl-number">1</span>;
|
||
alpha.mode = <span class="hl-number">1</span>;
|
||
alpha.value = val;
|
||
ret = ioctl(g_fb_fd, AICFB_UPDATE_ALPHA_CONFIG, &alpha);
|
||
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>)
|
||
ERR(<span class="hl-string">"ioctl() failed! errno: %d[%s]\n"</span>, errno, strerror(errno));
|
||
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> vidbuf_request(<strong class="hl-keyword">struct</strong> aicfb_video_layer *vlayer)
|
||
{
|
||
<strong class="hl-keyword">int</strong> i, j;
|
||
<strong class="hl-keyword">int</strong> heap_fd = -<span class="hl-number">1</span>;
|
||
<strong class="hl-keyword">int</strong> y_frame = vlayer->w * vlayer->h;
|
||
|
||
heap_fd = device_open(DMA_HEAP_DEV, O_RDWR);
|
||
<strong class="hl-keyword">if</strong> (heap_fd < <span class="hl-number">0</span>) {
|
||
ERR(<span class="hl-string">"Failed to open %s, errno: %d[%s]\n"</span>,
|
||
DMA_HEAP_DEV, errno, strerror(errno));
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
|
||
<em class="hl-comment">/* Prepare two group buffer for video player,
|
||
and each group has three planes: y, u, v. */</em>
|
||
<strong class="hl-keyword">for</strong> (i = <span class="hl-number">0</span>; i < AICFB_VID_BUF_NUM; i++) {
|
||
<strong class="hl-keyword">struct</strong> video_plane *p = (<strong class="hl-keyword">struct</strong> video_plane *)&vlayer->vbuf[i];
|
||
<strong class="hl-keyword">int</strong> *shift = &vlayer->f->y_shift;
|
||
<strong class="hl-keyword">for</strong> (j = <span class="hl-number">0</span>; j < AICFB_PLANE_NUM; j++, p++)
|
||
vidbuf_request_one(p, y_frame >> shift[j], heap_fd);
|
||
}
|
||
|
||
close(heap_fd);
|
||
<strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
|
||
}
|
||
|
||
<strong class="hl-keyword">void</strong> vidbuf_release(<strong class="hl-keyword">struct</strong> aicfb_video_layer *vlayer)
|
||
{
|
||
<strong class="hl-keyword">int</strong> i, j;
|
||
|
||
<strong class="hl-keyword">for</strong> (i = <span class="hl-number">0</span>; i < AICFB_VID_BUF_NUM; i++) {
|
||
<strong class="hl-keyword">struct</strong> video_plane *p = (<strong class="hl-keyword">struct</strong> video_plane *)&vlayer->vbuf[i];
|
||
<strong class="hl-keyword">for</strong> (j = <span class="hl-number">0</span>; j < AICFB_PLANE_NUM; j++, p++) {
|
||
<strong class="hl-keyword">if</strong> (munmap(p->buf, p->len) < <span class="hl-number">0</span>)
|
||
ERR(<span class="hl-string">"munmap() failed! errno: %d[%s]\n"</span>,
|
||
errno, strerror(errno));
|
||
}
|
||
}
|
||
}
|
||
|
||
<strong class="hl-keyword">void</strong> vidbuf_dmabuf_begin(<strong class="hl-keyword">struct</strong> aicfb_video_layer *vlayer)
|
||
{
|
||
<strong class="hl-keyword">int</strong> i, j;
|
||
<strong class="hl-keyword">struct</strong> aicfb_dmabuf_fd fds = {<span class="hl-number">0</span>};
|
||
|
||
<strong class="hl-keyword">for</strong> (i = <span class="hl-number">0</span>; i < AICFB_VID_BUF_NUM; i++) {
|
||
<strong class="hl-keyword">struct</strong> video_plane *plane = (<strong class="hl-keyword">struct</strong> video_plane *)&vlayer->vbuf[i];
|
||
<strong class="hl-keyword">for</strong> (j = <span class="hl-number">0</span>; j < AICFB_PLANE_NUM; j++, plane++) {
|
||
fds.fd = plane->fd;
|
||
<strong class="hl-keyword">if</strong> (ioctl(g_fb_fd, AICFB_GET_DMABUF, &fds) < <span class="hl-number">0</span>)
|
||
ERR(<span class="hl-string">"ioctl() failed! err %d[%s]\n"</span>,
|
||
errno, strerror(errno));
|
||
}
|
||
}
|
||
}
|
||
|
||
<strong class="hl-keyword">void</strong> vidbuf_dmabuf_end(<strong class="hl-keyword">struct</strong> aicfb_video_layer *vlayer)
|
||
{
|
||
<strong class="hl-keyword">int</strong> i, j;
|
||
<strong class="hl-keyword">struct</strong> aicfb_dmabuf_fd fds = {<span class="hl-number">0</span>};
|
||
|
||
<strong class="hl-keyword">for</strong> (i = <span class="hl-number">0</span>; i < AICFB_VID_BUF_NUM; i++) {
|
||
<strong class="hl-keyword">struct</strong> video_plane *plane = (<strong class="hl-keyword">struct</strong> video_plane *)&vlayer->vbuf[i];
|
||
<strong class="hl-keyword">for</strong> (j = <span class="hl-number">0</span>; j < AICFB_PLANE_NUM; j++, plane++) {
|
||
fds.fd = plane->fd;
|
||
<strong class="hl-keyword">if</strong> (ioctl(g_fb_fd, AICFB_PUT_DMABUF, &fds) < <span class="hl-number">0</span>)
|
||
ERR(<span class="hl-string">"ioctl() failed! err %d[%s]\n"</span>,
|
||
errno, strerror(errno));
|
||
}
|
||
}
|
||
}
|
||
|
||
<strong class="hl-keyword">void</strong> video_layer_set(<strong class="hl-keyword">struct</strong> aicfb_video_layer *vlayer, <strong class="hl-keyword">int</strong> index)
|
||
{
|
||
<strong class="hl-keyword">struct</strong> aicfb_layer_data layer = {<span class="hl-number">0</span>};
|
||
<strong class="hl-keyword">struct</strong> video_buf *vbuf = &vlayer->vbuf[index];
|
||
|
||
layer.layer_id = <span class="hl-number">0</span>;
|
||
layer.enable = <span class="hl-number">1</span>;
|
||
layer.scale_size.width = vlayer->w * <span class="hl-number">4</span>;
|
||
layer.scale_size.height = vlayer->h * <span class="hl-number">4</span>;
|
||
layer.pos.x = <span class="hl-number">10</span>;
|
||
layer.pos.y = <span class="hl-number">10</span>;
|
||
layer.buf.size.width = vlayer->w;
|
||
layer.buf.size.height = vlayer->h;
|
||
layer.buf.format = vlayer->f->format;
|
||
layer.buf.dmabuf_fd[<span class="hl-number">0</span>] = vbuf->y.fd;
|
||
layer.buf.dmabuf_fd[<span class="hl-number">1</span>] = vbuf->u.fd;
|
||
layer.buf.dmabuf_fd[<span class="hl-number">2</span>] = vbuf->v.fd;
|
||
layer.buf.stride[<span class="hl-number">0</span>] = vlayer->w;
|
||
layer.buf.stride[<span class="hl-number">1</span>] = vlayer->w >> <span class="hl-number">1</span>;
|
||
layer.buf.stride[<span class="hl-number">2</span>] = vlayer->w >> <span class="hl-number">1</span>;
|
||
|
||
<strong class="hl-keyword">if</strong> (ioctl(g_fb_fd, AICFB_UPDATE_LAYER_CONFIG, &layer) < <span class="hl-number">0</span>)
|
||
ERR(<span class="hl-string">"ioctl() failed! err %d[%s]\n"</span>, errno, strerror(errno));
|
||
}
|
||
|
||
<strong class="hl-keyword">void</strong> vidbuf_cpu_begin(<strong class="hl-keyword">struct</strong> video_buf *vbuf)
|
||
{
|
||
<strong class="hl-keyword">int</strong> i;
|
||
<strong class="hl-keyword">struct</strong> dma_buf_sync flag;
|
||
<strong class="hl-keyword">struct</strong> video_plane *p = (<strong class="hl-keyword">struct</strong> video_plane *)vbuf;
|
||
|
||
<strong class="hl-keyword">for</strong> (i = <span class="hl-number">0</span>; i < AICFB_PLANE_NUM; i++, p++) {
|
||
flag.flags = DMA_BUF_SYNC_WRITE | DMA_BUF_SYNC_START;
|
||
<strong class="hl-keyword">if</strong> (ioctl(p->fd, DMA_BUF_IOCTL_SYNC, &flag) < <span class="hl-number">0</span>)
|
||
ERR(<span class="hl-string">"ioctl() failed! err %d[%s]\n"</span>,
|
||
errno, strerror(errno));
|
||
}
|
||
}
|
||
|
||
<strong class="hl-keyword">void</strong> vidbuf_cpu_end(<strong class="hl-keyword">struct</strong> video_buf *vbuf)
|
||
{
|
||
<strong class="hl-keyword">int</strong> i;
|
||
<strong class="hl-keyword">struct</strong> dma_buf_sync flag;
|
||
<strong class="hl-keyword">struct</strong> video_plane *p = (<strong class="hl-keyword">struct</strong> video_plane *)vbuf;
|
||
|
||
<strong class="hl-keyword">for</strong> (i = <span class="hl-number">0</span>; i < AICFB_PLANE_NUM; i++, p++) {
|
||
flag.flags = DMA_BUF_SYNC_WRITE | DMA_BUF_SYNC_END;
|
||
<strong class="hl-keyword">if</strong> (ioctl(p->fd, DMA_BUF_IOCTL_SYNC, &flag) < <span class="hl-number">0</span>)
|
||
ERR(<span class="hl-string">"ioctl() failed! err %d[%s]\n"</span>,
|
||
errno, strerror(errno));
|
||
}
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> vidbuf_read(<strong class="hl-keyword">struct</strong> aicfb_video_layer *vlayer, <strong class="hl-keyword">int</strong> index, <strong class="hl-keyword">int</strong> fd)
|
||
{
|
||
<strong class="hl-keyword">int</strong> i, ret;
|
||
<strong class="hl-keyword">static</strong> <strong class="hl-keyword">int</strong> frame_cnt = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">struct</strong> video_plane *p = (<strong class="hl-keyword">struct</strong> video_plane *)&vlayer->vbuf[index];
|
||
|
||
<strong class="hl-keyword">if</strong> (frame_cnt == <span class="hl-number">0</span>)
|
||
lseek(fd, <span class="hl-number">0</span>, SEEK_SET);
|
||
|
||
<strong class="hl-keyword">for</strong> (i = <span class="hl-number">0</span>; i < AICFB_PLANE_NUM; i++, p++) {
|
||
DBG(<span class="hl-string">"Frame %d - %d, offset %ld, len %d\n"</span>, frame_cnt, i,
|
||
lseek(fd, <span class="hl-number">0</span>, SEEK_CUR), p->len);
|
||
ret = read(fd, p->buf, p->len);
|
||
<strong class="hl-keyword">if</strong> (ret != p->len) {
|
||
ERR(<span class="hl-string">"read(%d) return %d. errno: %d[%s]\n"</span>, p->len,
|
||
ret, errno, strerror(errno));
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
}
|
||
frame_cnt++;
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> format_parse(<strong class="hl-keyword">char</strong> *str)
|
||
{
|
||
<strong class="hl-keyword">int</strong> i;
|
||
|
||
<strong class="hl-keyword">for</strong> (i = <span class="hl-number">0</span>; g_vformat[i].format != AIC_FMT_MAX; i++) {
|
||
<strong class="hl-keyword">if</strong> (strncasecmp(g_vformat[i].f_str, str, strlen(str)) == <span class="hl-number">0</span>)
|
||
<strong class="hl-keyword">return</strong> i;
|
||
}
|
||
|
||
ERR(<span class="hl-string">"Invalid format: %s\n"</span>, str);
|
||
<strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
|
||
}
|
||
|
||
<strong class="hl-keyword">int</strong> main(<strong class="hl-keyword">int</strong> argc, <strong class="hl-keyword">char</strong> **argv)
|
||
{
|
||
<strong class="hl-keyword">int</strong> vid_fd = -<span class="hl-number">1</span>;
|
||
<strong class="hl-keyword">int</strong> ret = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">int</strong> c = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">int</strong> fsize = <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">int</strong> index = <span class="hl-number">0</span>;
|
||
|
||
DBG(<span class="hl-string">"Compile time: %s\n"</span>, __TIME__);
|
||
<strong class="hl-keyword">while</strong> ((c = getopt_long(argc, argv, sopts, lopts, NULL)) != -<span class="hl-number">1</span>) {
|
||
<strong class="hl-keyword">switch</strong> (c) {
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'w'</span>:
|
||
g_vlayer.w = str2int(optarg);
|
||
<strong class="hl-keyword">continue</strong>;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'h'</span>:
|
||
g_vlayer.h = str2int(optarg);
|
||
<strong class="hl-keyword">continue</strong>;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'f'</span>:
|
||
g_vlayer.f = &g_vformat[format_parse(optarg)];
|
||
<strong class="hl-keyword">break</strong>;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'i'</span>:
|
||
vid_fd = device_open(optarg, O_RDONLY);
|
||
<strong class="hl-keyword">if</strong> (vid_fd < <span class="hl-number">0</span>) {
|
||
ERR(<span class="hl-string">"Failed to open %s. errno: %d[%s]\n"</span>,
|
||
optarg, errno, strerror(errno));
|
||
<strong class="hl-keyword">return</strong> -<span class="hl-number">1</span>;
|
||
}
|
||
fsize = lseek(vid_fd, <span class="hl-number">0</span>, SEEK_END);
|
||
DBG(<span class="hl-string">"open(%s) %d, size %d\n"</span>, optarg, vid_fd, fsize);
|
||
<strong class="hl-keyword">break</strong>;
|
||
<strong class="hl-keyword">case</strong> <span class="hl-string">'u'</span>:
|
||
usage(argv[<span class="hl-number">0</span>]);
|
||
<strong class="hl-keyword">return</strong> <span class="hl-number">0</span>;
|
||
<strong class="hl-keyword">default</strong>:
|
||
<strong class="hl-keyword">break</strong>;
|
||
}
|
||
}
|
||
|
||
aic_fb_open();
|
||
set_ui_layer_alpha(<span class="hl-number">128</span>);
|
||
vidbuf_request(&g_vlayer);
|
||
vidbuf_dmabuf_begin(&g_vlayer);
|
||
|
||
<strong class="hl-keyword">do</strong> {
|
||
<strong class="hl-keyword">struct</strong> video_buf *vbuf = &g_vlayer.vbuf[index];
|
||
|
||
vidbuf_cpu_begin(vbuf);
|
||
ret = vidbuf_read(&g_vlayer, index, vid_fd);
|
||
vidbuf_cpu_end(vbuf);
|
||
<strong class="hl-keyword">if</strong> (ret < <span class="hl-number">0</span>)
|
||
<strong class="hl-keyword">break</strong>;
|
||
|
||
video_layer_set(&g_vlayer, index);
|
||
index = !index;
|
||
usleep(<span class="hl-number">40000</span>);
|
||
<strong class="hl-keyword">if</strong> (lseek(vid_fd, <span class="hl-number">0</span>, SEEK_CUR) == fsize)
|
||
<strong class="hl-keyword">break</strong>;
|
||
} <strong class="hl-keyword">while</strong> (<span class="hl-number">1</span>);
|
||
|
||
vidbuf_dmabuf_end(&g_vlayer);
|
||
vidbuf_release(&g_vlayer);
|
||
|
||
<strong class="hl-keyword">if</strong> (vid_fd > <span class="hl-number">0</span>)
|
||
close(vid_fd);
|
||
<strong class="hl-keyword">if</strong> (g_fb_fd > <span class="hl-number">0</span>)
|
||
close (g_fb_fd);
|
||
<strong class="hl-keyword">return</strong> ret;
|
||
}</code></pre></div>
|
||
</section>
|
||
|
||
</div>
|
||
</article></main></div>
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||
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</div>
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<div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#display_demo__section_s1j_zdg_d1c" data-tocid="display_demo__section_s1j_zdg_d1c">Framebuffer 标准接口的使用</a></div></li><li class="section-item"><div class="section-title"><a href="#display_demo__section_u1j_zdg_d1c" data-tocid="display_demo__section_u1j_zdg_d1c">AICFB 扩展接口的使用</a></div></li><li class="section-item"><div class="section-title"><a href="#display_demo__section_w1j_zdg_d1c" data-tocid="display_demo__section_w1j_zdg_d1c">DMA-BUF 的使用</a></div></li></ul></div>
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<title>footer def</title>
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<style><!--
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font-family: FangZhengShuSong, Times, serif;
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font-family: "Lucida Console", "Courier New", monospace;
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--></style>
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<div class="webhelp.fragment.footer">
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<p class="p1">Copyright © 2019-2024 广东匠芯创科技有限公司. All rights reserved.</p>
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</div><div>
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<div class="generation_time">
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Update Time: 2025-01-23
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</div>
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</div>
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</div>
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</footer>
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<button id="go2top" class="d-print-none" title="返回顶部">
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<span class="oxy-icon oxy-icon-up"></span>
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</button>
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<div id="caption"></div>
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<script src="${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer="defer"></script>
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</body>
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