From 7e510dc4e6fa7e03f69be7d1e86717c9edccce68 Mon Sep 17 00:00:00 2001
From: Awin Huang <awinhuang@gmail.com>
Date: Fri, 21 Mar 2025 10:29:05 +0800
Subject: [PATCH] vault backup: 2025-03-21 10:29:05
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Affected files:
00. Inbox/未命名.canvas
---
 00. Inbox/未命名.canvas | 31 ++++++++++++++++++++++++-------
 1 file changed, 24 insertions(+), 7 deletions(-)

diff --git a/00. Inbox/未命名.canvas b/00. Inbox/未命名.canvas
index fe75223..a4f8842 100644
--- a/00. Inbox/未命名.canvas	
+++ b/00. Inbox/未命名.canvas	
@@ -1,11 +1,28 @@
 {
 	"nodes":[
-		{"id":"4692d58b834eee84","x":-300,"y":-160,"width":274,"height":60,"type":"text","text":"`AVFormatContext* formatContext`"},
-		{"id":"3338d0ae0a5d52e8","x":14,"y":-160,"width":250,"height":60,"type":"text","text":"`AVCodec* codec`"},
-		{"id":"bf7f90f77714e446","x":-300,"y":-40,"width":274,"height":60,"type":"text","text":"`AVCodecContext* codecContext`"},
-		{"id":"8197b443d5d2a0ee","x":-300,"y":60,"width":250,"height":60,"type":"text","text":"`AVStream* stream`"},
-		{"id":"e4fc1011aa51d648","x":-300,"y":280,"width":250,"height":60,"type":"text","text":"`AVPacket* packet`"},
-		{"id":"3e5e2eb286b66064","x":-300,"y":180,"width":250,"height":60,"type":"text","text":"`AVFrame* frame`"}
+		{"id":"657749e452ae22a2","type":"group","x":-461,"y":-230,"width":425,"height":270,"label":"Create CodecContext by CODEC"},
+		{"id":"a8a281b03160720c","type":"group","x":-1620,"y":-230,"width":475,"height":150,"label":"Create AVStream by AVFormatCOntext"},
+		{"id":"dadd55c0e82a0f75","type":"group","x":-461,"y":110,"width":442,"height":150,"label":"Create CODEC"},
+		{"id":"ba45f40b19ea44d3","type":"group","x":-1596,"y":110,"width":426,"height":150,"label":"Create AVFormatContext"},
+		{"id":"b083af0a802c90b1","type":"text","text":"`codecContext = avcodec_alloc_context3(codec);`","x":-441,"y":-150,"width":385,"height":50},
+		{"id":"bf7f90f77714e446","type":"text","text":"`AVCodecContext* codecContext`","x":-395,"y":-210,"width":274,"height":50},
+		{"id":"eed8fddf0e282c05","type":"text","text":"`codec = avcodec_find_encoder(AV_CODEC_ID_MP3)`","x":-441,"y":190,"width":402,"height":50},
+		{"id":"3338d0ae0a5d52e8","type":"text","text":"`AVCodec* codec`","x":-374,"y":130,"width":250,"height":50},
+		{"id":"5f8636c9725a3ffe","type":"text","text":"```cpp\n// Set codec parameters\n        codecContext->bit_rate = bitRate;\n        codecContext->sample_rate = sampleRate;\n        codecContext->channels = channels;\n        codecContext->channel_layout = av_get_default_channel_layout(channels);\n        codecContext->sample_fmt = AV_SAMPLE_FMT_S16P;  // MP3 encoder usually requires planar s16\n        // Some formats need stream headers\n        if (formatContext->oformat->flags & AVFMT_GLOBALHEADER) {\n            codecContext->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;\n        }\n```","x":146,"y":-258,"width":712,"height":298},
+		{"id":"3e5e2eb286b66064","type":"text","text":"`AVFrame* frame`","x":252,"y":85,"width":250,"height":60},
+		{"id":"e4fc1011aa51d648","type":"text","text":"`AVPacket* packet`","x":252,"y":185,"width":250,"height":60},
+		{"id":"b9f9abb339e512d2","type":"text","text":"`avcodec_open2(codecContext, codec, nullptr);`","x":-436,"y":-80,"width":375,"height":50},
+		{"id":"7e6ff8d4cb0730ad","type":"text","text":"`stream = avformat_new_stream(formatContext, nullptr);`","x":-1600,"y":-150,"width":435,"height":50},
+		{"id":"8197b443d5d2a0ee","type":"text","text":"`AVStream* stream`","x":-1507,"y":-210,"width":250,"height":50},
+		{"id":"ffb5250ae3d92551","type":"text","text":"`avformat_alloc_output_context2(&formatContext`)","x":-1576,"y":190,"width":386,"height":50},
+		{"id":"4692d58b834eee84","type":"text","text":"`AVFormatContext* formatContext`","x":-1520,"y":130,"width":274,"height":50},
+		{"id":"47e7b62d1a0bfa79","type":"text","text":"`avcodec_parameters_from_context(stream->codecpar, codecContext)`","x":-1040,"y":-160,"width":507,"height":50}
 	],
-	"edges":[]
+	"edges":[
+		{"id":"e2cf21a4ba912fcf","fromNode":"657749e452ae22a2","fromSide":"right","toNode":"5f8636c9725a3ffe","toSide":"left"},
+		{"id":"1473a901cc2657ec","fromNode":"dadd55c0e82a0f75","fromSide":"top","toNode":"657749e452ae22a2","toSide":"bottom"},
+		{"id":"2b3cdd328f451c81","fromNode":"ba45f40b19ea44d3","fromSide":"top","toNode":"a8a281b03160720c","toSide":"bottom"},
+		{"id":"b69dc1ba45835fbe","fromNode":"8197b443d5d2a0ee","fromSide":"right","toNode":"47e7b62d1a0bfa79","toSide":"left"},
+		{"id":"3e9fa7e107bf252c","fromNode":"b083af0a802c90b1","fromSide":"left","toNode":"47e7b62d1a0bfa79","toSide":"right"}
+	]
 }
\ No newline at end of file