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cin: minimize memmove in avcodec code

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This commit is contained in:
Denis Pauk 2023-10-28 18:02:32 +03:00
parent edb361b98f
commit a72fa5af3a
2 changed files with 25 additions and 12 deletions
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34
src/client/cinema/avdecode.h
View file

@ -29,6 +29,7 @@ typedef struct cinavdecode
uint8_t *audio_res;
long audio_buffsize;
long audio_pos;
long audio_curr;
long audio_frame_size;
double audio_timestamp;
} cinavdecode_t;
@ -282,7 +283,7 @@ next_frame_ready(const cinavdecode_t *state)
return 0;
}
if (state->audio_pos < state->audio_frame_size)
if ((state->audio_pos - state->audio_curr) < state->audio_frame_size)
{
/* need more audio */
return 0;
@ -345,6 +346,18 @@ cinavdecode_parse_next(cinavdecode_t *state)
);
required_space = state->dec_frame->nb_samples * 2 * state->channels;
/* compact frame */
if ((state->audio_pos + required_space) > state->audio_buffsize &&
(state->audio_curr > 0))
{
memmove(state->audio_res,
state->audio_res + state->audio_curr,
state->audio_pos - state->audio_curr);
state->audio_pos -= state->audio_curr;
state->audio_curr = 0;
}
if ((state->audio_pos + required_space) > state->audio_buffsize)
{
uint8_t *new_buffer;
@ -442,7 +455,8 @@ cinavdecode_parse_next(cinavdecode_t *state)
/* use 2.5 second of audio buffering and 1.5 video buffer for async in
* media stream */
if ((state->audio_pos / state->audio_frame_size) > (state->fps * 2.5) ||
if (((state->audio_pos - state->audio_curr) / state->audio_frame_size) >
(state->fps * 3.0) ||
((state->video_pos - state->video_curr) / state->video_frame_size) >
(state->fps * 1.5))
{
@ -465,15 +479,11 @@ cinavdecode_next_frame(cinavdecode_t *state, uint8_t *video, uint8_t *audio)
cinavdecode_parse_next(state);
};
memcpy(audio, state->audio_res, state->audio_frame_size);
if (state->audio_pos >= state->audio_frame_size)
{
memmove(state->audio_res, state->audio_res + state->audio_frame_size,
state->audio_pos - state->audio_frame_size);
}
state->audio_pos -= state->audio_frame_size;
if (state->audio_pos < 0)
memcpy(audio, state->audio_res + state->audio_curr, state->audio_frame_size);
state->audio_curr += state->audio_frame_size;
if (state->audio_curr >= state->audio_pos)
{
state->audio_curr = 0;
state->audio_pos = 0;
}
@ -485,7 +495,9 @@ cinavdecode_next_frame(cinavdecode_t *state, uint8_t *video, uint8_t *audio)
state->video_pos = 0;
}
if (!state->eof || ((state->video_pos - state->video_curr) > 0) || state->audio_pos)
if (!state->eof ||
((state->video_pos - state->video_curr) > 0) ||
((state->audio_pos - state->audio_curr) > 0))
{
return 1;
}

3
src/client/cl_cin.c
View file

@ -661,7 +661,8 @@ SCR_ReadNextAVFrame(void)
}
Com_DPrintf("Audio %.2f (%.2f): Video %.2f (%.2f)\n",
(float)cin.av_video->audio_pos / cin.av_video->audio_frame_size,
(float)(cin.av_video->audio_pos - cin.av_video->audio_curr) /
cin.av_video->audio_frame_size,
cin.av_video->audio_timestamp,
(float)(cin.av_video->video_pos - cin.av_video->video_curr) /
cin.av_video->video_frame_size,