Online audio playing control method and device for FreeRTOS
A playback control device and playback control technology, applied to electrical components, transmission systems, etc., can solve problems such as no longer applicable, and achieve the effect of reliable online audio playback
Inactive Publication Date: 2019-04-23
AISPEECH CO LTD
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Problems solved by technology
Especially voice smart hardware has strict requirements on product cost and power consumption. Under the conditions of slower main frequency and smaller memory, the previous general HTTP download becomes no longer applicable
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[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0023] Please refer to figure 1 , which shows a flow chart of an embodiment of the online audio playback control method for FreeRTOS of the present application. The online audio playback control method for FreeRTOS of this embodiment can be applied to Internet of Things devices with full main frequency and small memory.
[0024] Such as figure 1...
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The invention discloses an online audio playing control method and device for FreeRTOS. The online audio playing control method for the FreeRTOS comprises the steps of writing data downloaded by an HTTP downloading task into a cache area; when it is detected that a network speed is not smaller than a preset network speed threshold value, continuously writing the data into the cache area until thecache area is full, sending a downloading stop instruction to the HTTP downloading task and recording a downloading interruption point; in response to the condition that a player task plays a first preset cache threshold value of the cached data in the cache area, sending a downloading continuing instruction to the HTTP downloading task to continue downloading from the downloading interruption point; and in response to the condition that the cache area is full, sending the downloading stop instruction to the HTTP downloading task. According to the scheme provided by the method and the device,by utilizing a breakpoint downloading mechanism of an HTTP, a state machine is added for control, so that reliable online audio playing is realized, and downloading can be stopped immediately at any time and can be started in any position at any time.
Description
technical field [0001] The invention belongs to the technical field of audio playback, in particular to an audio online playback control method and device for FreeRTOS. Background technique [0002] Among related technologies, Narrow Band Internet of Things (NB-IoT) has become an important branch of the Internet of Everything. NB-IoT is built on a cellular network and only consumes about 180KHz of bandwidth. It can be directly deployed on a GSM network, UMTS network or LTE network to reduce deployment costs and achieve smooth upgrades. [0003] NB-IoT is an emerging technology in the IoT field, which supports cellular data connections of low-power devices in wide area networks, also known as low-power wide area networks (LPWAN). NB-IoT supports efficient connection of devices with long standby time and high network connection requirements. It is said that NB-IoT device battery life can be improved by at least 10 years, while also providing very comprehensive indoor cellula...
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IPC IPC(8): H04L29/08
CPCH04L67/02H04L67/06H04L67/568
Inventor 侯觉庞川杨善锦郭迪张栖银崔简汪忱雷雄国强胜轩刘强
Owner AISPEECH CO LTD