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Discover H264 keyframes on dequeue

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This commit is contained in:
Kamil Trzciński
2022-10-29 11:36:58 +02:00
parent ec2ed5e392
commit 79e9bca11f
6 changed files with 27 additions and 26 deletions
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23
output/http_h264.c
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@ -31,31 +31,10 @@ typedef struct {
bool requested_key_frame;
} http_video_status_t;
bool h264_is_key_frame(buffer_t *buf)
{
unsigned char *data = buf->start;
static const int N = 8;
char buffer [3*N+1];
buffer[sizeof(buffer)-1] = 0;
for(int j = 0; j < N; j++)
sprintf(&buffer[sizeof(buffer)/N*j], "%02X ", data[j]);
if (buf->flags.is_keyframe) {
LOG_DEBUG(buf, "Got key frame (from V4L2)!: %s", buffer);
return true;
} else if (buf->used >= 5 && (data[4] & 0x1F) == 0x07) {
LOG_DEBUG(buf, "Got key frame (from buffer)!: %s", buffer);
return true;
}
return false;
}
int http_video_buf_part(buffer_lock_t *buf_lock, buffer_t *buf, int frame, http_video_status_t *status)
{
if (!status->had_key_frame) {
status->had_key_frame = h264_is_key_frame(buf);
status->had_key_frame = buf->flags.is_keyframe;
}
if (!status->had_key_frame) {