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azbox: split up cVideo::ShowPicture

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create a new show_iframe function which just gets the
still-mpeg data passed from ShowPicture
This commit is contained in:
Stefan Seyfried
2012-06-24 15:10:28 +02:00
parent 5b8ff82730
commit 34402dff9f
1 changed files with 52 additions and 45 deletions
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97
azbox/video.cpp
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@@ -62,6 +62,8 @@ int system_rev = 0;
static bool hdmi_enabled = true;
static bool stillpicture = false;
/* prototype */
static void show_iframe(int fd, unsigned char *iframe, size_t st_size);
#define VIDEO_STREAMTYPE_MPEG2 0
#define VIDEO_STREAMTYPE_MPEG4_H264 1
@@ -294,12 +296,11 @@ void cVideo::SetVideoMode(analog_mode_t mode)
void cVideo::ShowPicture(const char * fname)
{
lt_debug("%s(%s)\n", __func__, fname);
static const unsigned char pes_header[] = { 0, 0, 1, 0xE0, 0, 0, 0x80, 0x80, 5, 0x21, 0, 1, 0, 1};
static const unsigned char seq_end[] = { 0x00, 0x00, 0x01, 0xB7 };
char destname[512];
char cmd[512];
char *p;
int mfd;
unsigned char *iframe;
struct stat st, st2;
if (video_standby)
{
@@ -307,6 +308,11 @@ void cVideo::ShowPicture(const char * fname)
lt_info("%s: video_standby == true\n", __func__);
return;
}
if (fd < 0)
{
lt_info("%s: decoder not opened?\n", __func__);
return;
}
strcpy(destname, "/var/cache");
if (stat(fname, &st2))
{
@@ -343,52 +349,17 @@ void cVideo::ShowPicture(const char * fname)
}
fstat(mfd, &st);
closeDevice();
openDevice();
stillpicture = true;
if (fd >= 0)
iframe = (unsigned char *)malloc(st.st_size);
if (! iframe)
{
stillpicture = true;
if (ioctl(fd, VIDEO_SET_FORMAT, VIDEO_FORMAT_16_9) < 0)
lt_info("%s: VIDEO_SET_FORMAT failed (%m)\n", __func__);
bool seq_end_avail = false;
size_t pos=0;
int count = 7;
unsigned char *iframe = (unsigned char *)malloc((st.st_size < 8192) ? 8192 : st.st_size);
if (! iframe)
{
lt_info("%s: malloc failed (%m)\n", __func__);
goto out;
}
read(mfd, iframe, st.st_size);
ioctl(fd, VIDEO_SET_STREAMTYPE, VIDEO_FORMAT_MPEG2);
ioctl(fd, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_MEMORY);
ioctl(fd, VIDEO_PLAY);
ioctl(fd, VIDEO_CONTINUE);
ioctl(fd, VIDEO_CLEAR_BUFFER);
while (pos <= (st.st_size-4) && !(seq_end_avail = (!iframe[pos] && !iframe[pos+1] && iframe[pos+2] == 1 && iframe[pos+3] == 0xB7)))
++pos;
while (count--)
{
if ((iframe[3] >> 4) != 0xE) // no pes header
{
write(fd, pes_header, sizeof(pes_header));
usleep(8000);
}
else
iframe[4] = iframe[5] = 0x00;
write(fd, iframe, st.st_size);
usleep(8000);
}
if (!seq_end_avail)
write(fd, seq_end, sizeof(seq_end));
memset(iframe, 0, 8192);
write(fd, iframe, 8192);
ioctl(fd, VIDEO_STOP, 0);
ioctl(fd, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_DEMUX);
free(iframe);
lt_info("%s: malloc failed (%m)\n", __func__);
goto out;
}
read(mfd, iframe, st.st_size);
show_iframe(fd, iframe, st.st_size);
free(iframe);
out:
close(mfd);
return;
@@ -596,3 +567,39 @@ int64_t cVideo::GetPTS(void)
lt_info("%s: GET_PTS failed (%m)\n", __func__);
return pts;
}
static void show_iframe(int fd, unsigned char *iframe, size_t st_size)
{
static const unsigned char pes_header[] = { 0, 0, 1, 0xE0, 0, 0, 0x80, 0x80, 5, 0x21, 0, 1, 0, 1};
static const unsigned char seq_end[] = { 0x00, 0x00, 0x01, 0xB7 };
unsigned char stuffing[128];
bool seq_end_avail = false;
size_t pos = 0;
int count = 7;
if (ioctl(fd, VIDEO_SET_FORMAT, VIDEO_FORMAT_16_9) < 0)
lt_info_c("%s: VIDEO_SET_FORMAT failed (%m)\n", __func__);
ioctl(fd, VIDEO_SET_STREAMTYPE, VIDEO_FORMAT_MPEG2);
ioctl(fd, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_MEMORY);
ioctl(fd, VIDEO_PLAY);
ioctl(fd, VIDEO_CONTINUE);
ioctl(fd, VIDEO_CLEAR_BUFFER);
while (pos <= (st_size-4) && !(seq_end_avail = (!iframe[pos] && !iframe[pos+1] && iframe[pos+2] == 1 && iframe[pos+3] == 0xB7)))
++pos;
while (count--)
{
if ((iframe[3] >> 4) != 0xE) // no pes header
write(fd, pes_header, sizeof(pes_header));
else
iframe[4] = iframe[5] = 0x00;
write(fd, iframe, st_size);
usleep(8000);
}
if (!seq_end_avail)
write(fd, seq_end, sizeof(seq_end));
memset(stuffing, 0, sizeof(stuffing));
for (count = 0; count < 8192 / (int)sizeof(stuffing); count++)
write(fd, stuffing, sizeof(stuffing));
ioctl(fd, VIDEO_STOP, 0);
ioctl(fd, VIDEO_SELECT_SOURCE, VIDEO_SOURCE_DEMUX);
}