App:Library:LVGL:docs:3rd party libraries:FFmpeg support

https://docs.lvgl.io/8.2/libs/ffmpeg.html

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FFmpeg support

FFmpeg A complete, cross-platform solution to record, convert and stream audio and video.

Install FFmpeg

• Download FFmpeg from here
• ./configure --disable-all --disable-autodetect --disable-podpages --disable-asm --enable-avcodec --enable-avformat --enable-decoders --enable-encoders --enable-demuxers --enable-parsers --enable-protocol='file' --enable-swscale --enable-zlib
• make
• sudo make install

Add FFmpeg to your project

• Add library: FFmpeg (for GCC: -lavformat -lavcodec -lavutil -lswscale -lm -lz -lpthread)

Usage

Enable LV_USE_FFMPEG in lv_conf.h.

See the examples below.

Note that, the FFmpeg extension doesn't use LVGL's file system. You can simply pass the path to the image or video as usual on your operating system or platform.

Example

Decode image

https://docs.lvgl.io/8.2/libs/ffmpeg.html#decode-image

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Decode video

https://docs.lvgl.io/8.2/libs/ffmpeg.html#decode-video

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API

Enums

enum lv_ffmpeg_player_cmd_t[1]

Values:

enumerator L[2]V_FFMPEG_PLAYER_CMD_START[3]

enumerator LV_FFMPEG_PLAYER[4]_CMD_STOP[5]

enumerator LV_FFMPEG_PLAYE[6]R_CMD_PAUSE[7]

enumerator LV_FFMPEG_PLAYER[8]_CMD_RESUME[9]

enumerator _LV_FFMPEG_PLAYER[10]_CMD_LAST[11]

Functions

void lv_ffmpeg[12]_init(void)[13]

Register FFMPEG image[14] decoder

int lv_ffmpeg_get_frame_num(const char *path)[15]

Get the number of frames contained in the[16] file

Parameters

path -- image or video file name

Returns

Number of frames, less than 0 means failed

lv_obj_t *lv_ffmpeg_player_create(lv_obj_t *parent)[17]

Create ffmpeg_player object

Parameters

pa[18]rent -- pointer to an object, it will be the parent of the new player

Returns

pointer to the created ffmpeg_player

lv_res_t lv_ffmpeg_player_set_src(lv_obj_t *obj, const char *path)[19]

Set the path of the file to be played

Parameters

• obj -[20]- pointer to a ffmpeg_player object
• path -- video file path

Returns

LV_RES_OK: no error; LV_RES_INV: can't get the info.

void lv_ffmpeg_player_set_cmd(lv_obj_t *obj, lv_ffmpeg_player_cmd_t cmd)[21]

Set command control video player

Parameters

• obj -- pointer t[22]o a ffmpeg_player object
• cmd -- control commands

void lv_ffmpeg_player_set_auto_restart(lv_obj_t *obj, bool en)[23]

Set the video to automatically replay

Parameters

• o[24]bj -- pointer to a ffmpeg_player object
• en -- true: enable the auto restart

Variables

const lv_obj_class_t lv_ffmpeg_player_class[25]

struct lv_ffmpeg_player_t[26]

Pu[27]blic Members

lv_[28]img_t img[29]

lv[30]_timer_t *timer[31]

lv_img_[32]dsc_t imgdsc[33]

bool auto[34]_restart[35]

struct [36]ffmpeg_context_s *ffmpeg_ctx

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