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(video_driver_frame) Do away with a lot of string intermediary copies

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for formatting the status text
This commit is contained in:
LibretroAdmin 2022-08-29 13:29:11 +02:00
parent 200897f61e
commit 8e949c516e
1 changed files with 37 additions and 21 deletions
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58
gfx/video_driver.c
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@ -3744,13 +3744,20 @@ void video_driver_frame(const void *data, unsigned width,
fps_time = new_time;
if (video_info.fps_show)
buf_pos = snprintf(
status_text, sizeof(status_text),
"FPS: %6.2f", last_fps);
{
status_text[0] = 'F';
status_text[1] = 'P';
status_text[2] = 'S';
status_text[3] = ':';
status_text[4] = ' ';
status_text[5] = '\0';
buf_pos = snprintf(
status_text + 5, sizeof(status_text) - 5,
"%6.2f", last_fps) + 5;
}
if (video_info.framecount_show)
{
char frames_text[64];
if (status_text[buf_pos-1] != '\0')
{
status_text[buf_pos ] = ' ';
@ -3759,36 +3766,45 @@ void video_driver_frame(const void *data, unsigned width,
status_text[buf_pos+3] = ' ';
status_text[buf_pos+4] = '\0';
}
snprintf(frames_text,
sizeof(frames_text),
"%s: %" PRIu64, msg_hash_to_str(MSG_FRAMES),
(uint64_t)video_st->frame_count);
buf_pos = strlcat(status_text, frames_text, sizeof(status_text));
buf_pos = strlcat(status_text, msg_hash_to_str(MSG_FRAMES),
sizeof(status_text));
status_text[buf_pos ] = ':';
status_text[++buf_pos] = ' ';
status_text[++buf_pos] = '\0';
buf_pos += snprintf(
status_text + buf_pos,
sizeof(status_text) - buf_pos,
"%" PRIu64, (uint64_t)video_st->frame_count);
}
if (video_info.memory_show)
{
char mem[128];
if ((video_st->frame_count % memory_update_interval) == 0)
{
last_total_memory = frontend_driver_get_total_memory();
last_used_memory = last_total_memory - frontend_driver_get_free_memory();
}
mem[0] = '\0';
snprintf(
mem, sizeof(mem), "MEM: %.2f/%.2fMB", last_used_memory / (1024.0f * 1024.0f),
last_total_memory / (1024.0f * 1024.0f));
if (status_text[buf_pos-1] != '\0')
{
status_text[buf_pos ] = ' ';
status_text[buf_pos+1] = '|';
status_text[buf_pos+2] = '|';
status_text[buf_pos+3] = ' ';
status_text[buf_pos+4] = '\0';
status_text[buf_pos] = ' ';
status_text[++buf_pos] = '|';
status_text[++buf_pos] = '|';
status_text[++buf_pos] = ' ';
status_text[++buf_pos] = '\0';
}
buf_pos = strlcat(status_text, mem, sizeof(status_text));
status_text[buf_pos ] = 'M';
status_text[++buf_pos] = 'E';
status_text[++buf_pos] = 'M';
status_text[++buf_pos] = ':';
status_text[++buf_pos] = ' ';
status_text[++buf_pos] = '\0';
buf_pos += snprintf(
status_text + buf_pos, sizeof(status_text) - buf_pos, "%.2f/%.2f", last_used_memory / (1024.0f * 1024.0f),
last_total_memory / (1024.0f * 1024.0f));
status_text[buf_pos ] = 'M';
status_text[++buf_pos] = 'B';
status_text[++buf_pos] = '\0';
}
if ((video_st->frame_count % fps_update_interval) == 0)