This file contains functions related to hw acceleration. More...

#include "types.h"
#include <libavcodec/avcodec.h>

Include dependency graph for hwaccel_libav_common.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	hw_accel_state

Functions
enum hw_accel_type	hw_accel_from_pixfmt (enum AVPixelFormat)

enum hw_accel_type	hw_accel_from_str (const char *str)

const char *	hw_accel_to_str (enum hw_accel_type type)

codec_t	hw_accel_to_ug_pixfmt (enum hw_accel_type type)

void	hwaccel_state_init (struct hw_accel_state *hwaccel)
	Initializes hw_accel_state structure.

void	hwaccel_state_reset (struct hw_accel_state *hwaccel)
	Uninitializes existing acceleration and resets hw_accel_state to initial state.

Detailed Description

This file contains functions related to hw acceleration.

Author: Martin Piatka piatk.nosp@m.a@ce.nosp@m.snet..nosp@m.cz

Definition in file hwaccel_libav_common.h.

Function Documentation

◆ hw_accel_from_pixfmt()

enum hw_accel_type hw_accel_from_pixfmt ( enum AVPixelFormat )

Definition at line 98 of file hwaccel_libav_common.c.

{
        for (unsigned i = 0; i < sizeof accel_str_map / sizeof accel_str_map[0];
             i++) {
                if (accel_str_map[i].av_pixfmt == pixfmt) {
                        return accel_str_map[i].type;
                }
        }
 
        return HWACCEL_NONE;
}

References accel_str_map, av_pixfmt, and HWACCEL_NONE.

Referenced by get_format_callback(), and libavcodec_decompress().

◆ hw_accel_from_str()

enum hw_accel_type hw_accel_from_str ( const char * str )

Definition at line 76 of file hwaccel_libav_common.c.

                                                     {
        if (strcmp(str, "help") == 0) {
                char msg[STR_LEN] = "Available decode accelerations:";
                for (unsigned i = 0;
                     i < sizeof(accel_str_map) / sizeof(accel_str_map[0]);
                     i++) {
                        snprintf(msg + strlen(msg), sizeof msg - strlen(msg),
                                 " " TBOLD("%s"), accel_str_map[i].name);
                }
                color_printf("%s\n", msg);
                return HWACCEL_NONE;
        }
        for(unsigned i = 0; i < sizeof(accel_str_map) / sizeof(accel_str_map[0]); i++){
                if(strcmp(str, accel_str_map[i].name) == 0){
                        return accel_str_map[i].type;
                }
        }
 
        return HWACCEL_NONE;
}

References accel_str_map, color_printf(), HWACCEL_NONE, name, STR_LEN, and TBOLD.

Referenced by get_format_callback(), and validate_hwacc_param().

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◆ hw_accel_to_str()

const char * hw_accel_to_str ( enum hw_accel_type type )

Definition at line 110 of file hwaccel_libav_common.c.

                                                    {
        for(unsigned i = 0; i < sizeof(accel_str_map) / sizeof(accel_str_map[0]); i++){
                if(type == accel_str_map[i].type){
                        return accel_str_map[i].name;
                }
        }
 
        return "unknown";
}

References accel_str_map, and type.

◆ hw_accel_to_ug_pixfmt()

codec_t hw_accel_to_ug_pixfmt ( enum hw_accel_type type )

Definition at line 121 of file hwaccel_libav_common.c.

{
        for (unsigned i = 0;
             i < sizeof(accel_str_map) / sizeof(accel_str_map[0]); i++) {
                if (type == accel_str_map[i].type) {
                        return accel_str_map[i].ug_pixfmt;
                }
        }
        return VIDEO_CODEC_NONE;
}

References accel_str_map, type, and VIDEO_CODEC_NONE.

Referenced by libavcodec_decompress_get_priority().

◆ hwaccel_state_init()

void hwaccel_state_init ( struct hw_accel_state * hwaccel )

Initializes hw_accel_state structure.

Definition at line 132 of file hwaccel_libav_common.c.

                                                       {
        hwaccel->type = HWACCEL_NONE;
        hwaccel->copy = false;
        hwaccel->uninit = NULL;
        hwaccel->tmp_frame = NULL;
        hwaccel->uninit = NULL;
        hwaccel->ctx = NULL;
}

References hw_accel_state::copy, hw_accel_state::ctx, HWACCEL_NONE, hw_accel_state::tmp_frame, hw_accel_state::type, and hw_accel_state::uninit.

Referenced by hwaccel_state_reset(), and libavcodec_decompress_init().

◆ hwaccel_state_reset()

void hwaccel_state_reset ( struct hw_accel_state * hwaccel )

Uninitializes existing acceleration and resets hw_accel_state to initial state.

Definition at line 141 of file hwaccel_libav_common.c.

                                                        {
        if(hwaccel->ctx){
                hwaccel->uninit(hwaccel);
        }
 
        if(hwaccel->tmp_frame){
                av_frame_free(&hwaccel->tmp_frame);
        }
 
        hwaccel_state_init(hwaccel);
}

References hw_accel_state::ctx, hwaccel_state_init(), hw_accel_state::tmp_frame, and hw_accel_state::uninit.

Referenced by deconfigure(), and get_format_callback().