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cin: minimaze memmove of video frames

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This commit is contained in:
Denis Pauk 2023-10-28 00:21:33 +03:00
parent f83d40ffe3
commit 00dcd5952b
2 changed files with 25 additions and 13 deletions
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35
src/client/cinema/avdecode.h
View file

@ -20,6 +20,7 @@ typedef struct cinavdecode
uint8_t *video_res;
long video_buffsize;
long video_pos;
long video_curr;
long video_frame_size;
double video_timestamp;
@ -256,7 +257,7 @@ cinavdecode_open(const char *name)
static int
next_frame_ready(const cinavdecode_t *state)
{
if (state->video_pos < state->video_frame_size)
if ((state->video_pos - state->video_curr) < state->video_frame_size)
{
/* need more frames */
return 0;
@ -371,6 +372,19 @@ cinavdecode_next_frame(cinavdecode_t *state, uint8_t *video, uint8_t *audio)
);
required_space = state->video_frame_size;
/* compact frame */
if ((state->video_pos + required_space) > state->video_buffsize &&
(state->video_curr > 0))
{
memmove(state->video_res,
state->video_res + state->video_curr,
state->video_pos - state->video_curr);
state->video_pos -= state->video_curr;
state->video_curr = 0;
}
/* realloc memory */
if ((state->video_pos + required_space) > state->video_buffsize)
{
uint8_t *new_buffer;
@ -411,8 +425,9 @@ cinavdecode_next_frame(cinavdecode_t *state, uint8_t *video, uint8_t *audio)
/* 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)||
(state->video_pos / state->video_frame_size) > (state->fps * 1.5))
if ((state->audio_pos / state->audio_frame_size) > (state->fps * 2.5) ||
((state->video_pos - state->video_curr) / state->video_frame_size) >
(state->fps * 1.5))
{
/* flush buffer if more than 1.5 second async in video stream */
break;
@ -431,19 +446,15 @@ cinavdecode_next_frame(cinavdecode_t *state, uint8_t *video, uint8_t *audio)
state->audio_pos = 0;
}
memcpy(video, state->video_res, state->video_frame_size);
if (state->video_pos >= state->video_frame_size)
{
memmove(state->video_res, state->video_res + state->video_frame_size,
state->video_pos - state->video_frame_size);
}
state->video_pos -= state->video_frame_size;
if (state->video_pos < 0)
memcpy(video, state->video_res + state->video_curr, state->video_frame_size);
state->video_curr += state->video_frame_size;
if (state->video_curr >= state->video_pos)
{
state->video_curr = 0;
state->video_pos = 0;
}
if (!state->eof || state->video_pos || state->audio_pos)
if (!state->eof || ((state->video_pos - state->video_curr) > 0) || state->audio_pos)
{
return 1;
}

3
src/client/cl_cin.c
View file

@ -663,7 +663,8 @@ SCR_ReadNextAVFrame(void)
Com_DPrintf("Audio %.2f (%.2f): Video %.2f (%.2f)\n",
(float)cin.av_video->audio_pos / cin.av_video->audio_frame_size,
cin.av_video->audio_timestamp,
(float)cin.av_video->video_pos / cin.av_video->video_frame_size,
(float)(cin.av_video->video_pos - cin.av_video->video_curr) /
cin.av_video->video_frame_size,
cin.av_video->video_timestamp);
/* force untransparent image show */