/*
** _tuiUpdateLocation_command().
** Command to update the display with the current execution point
*/
static void
_tuiUpdateLocation_command (char *arg, int fromTTY)
{
#ifndef TRY
extern void frame_command (char *, int);
frame_command ("0", FALSE);
#else
struct frame_info *curFrame;
/* Obtain the current execution point */
if ((curFrame = get_current_frame ()) != (struct frame_info *) NULL)
{
struct frame_info *frame;
int curLevel = 0;
for (frame = get_prev_frame (curLevel);
(frame != (struct frame_info *) NULL && (frame != curFrame));
frame = get_prev_frame (frame))
curLevel++;
if (curFrame != (struct frame_info *) NULL)
print_frame_info (frame, curLevel, 0, 1);
}
#endif
return;
} /* _tuiUpdateLocation_command */
/* Print a list of the stack frames. Args can be none, in which case
we want to print the whole backtrace, or a pair of numbers
specifying the frame numbers at which to start and stop the
display. If the two numbers are equal, a single frame will be
displayed. */
enum mi_cmd_result
mi_cmd_stack_list_frames (char *command, char **argv, int argc)
{
int frame_low;
int frame_high;
int i;
struct cleanup *cleanup_stack;
struct frame_info *fi;
if (!target_has_stack)
error ("mi_cmd_stack_list_frames: No stack.");
if (argc > 2 || argc == 1)
error ("mi_cmd_stack_list_frames: Usage: [FRAME_LOW FRAME_HIGH]");
if (argc == 2)
{
frame_low = atoi (argv[0]);
frame_high = atoi (argv[1]);
}
else
{
/* Called with no arguments, it means we want the whole
backtrace. */
frame_low = -1;
frame_high = -1;
}
/* Let's position fi on the frame at which to start the
display. Could be the innermost frame if the whole stack needs
displaying, or if frame_low is 0. */
for (i = 0, fi = get_current_frame ();
fi && i < frame_low;
i++, fi = get_prev_frame (fi));
if (fi == NULL)
error ("mi_cmd_stack_list_frames: Not enough frames in stack.");
cleanup_stack = make_cleanup_ui_out_list_begin_end (uiout, "stack");
/* Now let;s print the frames up to frame_high, or until there are
frames in the stack. */
for (;
fi && (i <= frame_high || frame_high == -1);
i++, fi = get_prev_frame (fi))
{
QUIT;
/* Print the location and the address always, even for level 0.
args == 0: don't print the arguments. */
print_frame_info (fi, 1, LOC_AND_ADDRESS, 0 /* args */ );
}
do_cleanups (cleanup_stack);
if (i < frame_high)
error ("mi_cmd_stack_list_frames: Not enough frames in stack.");
return MI_CMD_DONE;
}
static inline CopyRet receive_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t second_field)
{
BC_STATUS ret;
BC_DTS_PROC_OUT output =
{
.PicInfo.width = avctx->width,
.PicInfo.height = avctx->height,
};
CHDContext *priv = avctx->priv_data;
HANDLE dev = priv->dev;
*data_size = 0;
// Request decoded data from the driver
ret = DtsProcOutputNoCopy(dev, OUTPUT_PROC_TIMEOUT, &output);
if (ret == BC_STS_FMT_CHANGE)
{
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Initial format change\n");
avctx->width = output.PicInfo.width;
avctx->height = output.PicInfo.height;
return RET_COPY_AGAIN;
}
else if (ret == BC_STS_SUCCESS)
{
int copy_ret = -1;
if (output.PoutFlags & BC_POUT_FLAGS_PIB_VALID)
{
if (priv->last_picture == -1)
{
/*
* Init to one less, so that the incrementing code doesn't
* need to be special-cased.
*/
priv->last_picture = output.PicInfo.picture_number - 1;
}
if (avctx->codec->id == CODEC_ID_MPEG4 &&
output.PicInfo.timeStamp == 0)
{
av_log(avctx, AV_LOG_VERBOSE,
"CrystalHD: Not returning packed frame twice.\n");
priv->last_picture++;
DtsReleaseOutputBuffs(dev, NULL, FALSE);
return RET_COPY_AGAIN;
}
print_frame_info(priv, &output);
if (priv->last_picture + 1 < output.PicInfo.picture_number)
{
av_log(avctx, AV_LOG_WARNING,
"CrystalHD: Picture Number discontinuity\n");
/*
* Have we lost frames? If so, we need to shrink the
* pipeline length appropriately.
*
* XXX: I have no idea what the semantics of this situation
* are so I don't even know if we've lost frames or which
* ones.
*
* In any case, only warn the first time.
*/
priv->last_picture = output.PicInfo.picture_number - 1;
}
copy_ret = copy_frame(avctx, &output, data, data_size, second_field);
if (*data_size > 0)
{
avctx->has_b_frames--;
priv->last_picture++;
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Pipeline length: %u\n",
avctx->has_b_frames);
}
}
else
{
/*
* An invalid frame has been consumed.
*/
av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput succeeded with "
"invalid PIB\n");
avctx->has_b_frames--;
copy_ret = RET_OK;
}
DtsReleaseOutputBuffs(dev, NULL, FALSE);
return copy_ret;
}
else if (ret == BC_STS_BUSY)
{
return RET_COPY_AGAIN;
}
else
{
av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput failed %d\n", ret);
return RET_ERROR;
}
}
static int decode(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
{
BC_STATUS ret;
BC_DTS_STATUS decoder_status;
CopyRet rec_ret;
CHDContext *priv = avctx->priv_data;
HANDLE dev = priv->dev;
int len = avpkt->size;
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: decode_frame\n");
if (len)
{
int32_t tx_free = (int32_t)DtsTxFreeSize(dev);
if (len < tx_free - 1024)
{
/*
* Despite being notionally opaque, either libcrystalhd or
* the hardware itself will mangle pts values that are too
* small or too large. The docs claim it should be in units
* of 100ns. Given that we're nominally dealing with a black
* box on both sides, any transform we do has no guarantee of
* avoiding mangling so we need to build a mapping to values
* we know will not be mangled.
*/
uint64_t pts = opaque_list_push(priv, avctx->pkt->pts);
if (!pts)
{
return AVERROR(ENOMEM);
}
av_log(priv->avctx, AV_LOG_VERBOSE,
"input \"pts\": %"PRIu64"\n", pts);
ret = DtsProcInput(dev, avpkt->data, len, pts, 0);
if (ret == BC_STS_BUSY)
{
av_log(avctx, AV_LOG_WARNING,
"CrystalHD: ProcInput returned busy\n");
usleep(BASE_WAIT);
return AVERROR(EBUSY);
}
else if (ret != BC_STS_SUCCESS)
{
av_log(avctx, AV_LOG_ERROR,
"CrystalHD: ProcInput failed: %u\n", ret);
return -1;
}
avctx->has_b_frames++;
}
else
{
av_log(avctx, AV_LOG_WARNING, "CrystalHD: Input buffer full\n");
len = 0; // We didn't consume any bytes.
}
}
else
{
av_log(avctx, AV_LOG_INFO, "CrystalHD: No more input data\n");
}
if (priv->skip_next_output)
{
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Skipping next output.\n");
priv->skip_next_output = 0;
avctx->has_b_frames--;
return len;
}
ret = DtsGetDriverStatus(dev, &decoder_status);
if (ret != BC_STS_SUCCESS)
{
av_log(avctx, AV_LOG_ERROR, "CrystalHD: GetDriverStatus failed\n");
return -1;
}
/*
* No frames ready. Don't try to extract.
*
* Empirical testing shows that ReadyListCount can be a damn lie,
* and ProcOut still fails when count > 0. The same testing showed
* that two more iterations were needed before ProcOutput would
* succeed.
*/
if (priv->output_ready < 2)
{
if (decoder_status.ReadyListCount != 0)
priv->output_ready++;
usleep(BASE_WAIT);
av_log(avctx, AV_LOG_INFO, "CrystalHD: Filling pipeline.\n");
return len;
}
else if (decoder_status.ReadyListCount == 0)
{
/*
* After the pipeline is established, if we encounter a lack of frames
* that probably means we're not giving the hardware enough time to
* decode them, so start increasing the wait time at the end of a
* decode call.
*/
usleep(BASE_WAIT);
priv->decode_wait += WAIT_UNIT;
av_log(avctx, AV_LOG_INFO, "CrystalHD: No frames ready. Returning\n");
return len;
}
do
{
rec_ret = receive_frame(avctx, data, data_size, 0);
if (rec_ret == 0 && *data_size == 0)
{
if (avctx->codec->id == CODEC_ID_H264)
{
/*
* This case is for when the encoded fields are stored
* separately and we get a separate avpkt for each one. To keep
* the pipeline stable, we should return nothing and wait for
* the next time round to grab the second field.
* H.264 PAFF is an example of this.
*/
av_log(avctx, AV_LOG_VERBOSE, "Returning after first field.\n");
avctx->has_b_frames--;
}
else
{
/*
* This case is for when the encoded fields are stored in a
* single avpkt but the hardware returns then separately. Unless
* we grab the second field before returning, we'll slip another
* frame in the pipeline and if that happens a lot, we're sunk.
* So we have to get that second field now.
* Interlaced mpeg2 and vc1 are examples of this.
*/
av_log(avctx, AV_LOG_VERBOSE, "Trying to get second field.\n");
while (1)
{
usleep(priv->decode_wait);
ret = DtsGetDriverStatus(dev, &decoder_status);
if (ret == BC_STS_SUCCESS &&
decoder_status.ReadyListCount > 0)
{
rec_ret = receive_frame(avctx, data, data_size, 1);
if ((rec_ret == 0 && *data_size > 0) ||
rec_ret == RET_ERROR)
break;
}
}
av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Got second field.\n");
}
}
else if (rec_ret == RET_SKIP_NEXT_COPY)
{
/*
* Two input packets got turned into a field pair. Gawd.
*/
av_log(avctx, AV_LOG_VERBOSE,
"Don't output on next decode call.\n");
priv->skip_next_output = 1;
}
/*
* If rec_ret == RET_COPY_AGAIN, that means that either we just handled
* a FMT_CHANGE event and need to go around again for the actual frame,
* we got a busy status and need to try again, or we're dealing with
* packed b-frames, where the hardware strangely returns the packed
* p-frame twice. We choose to keep the second copy as it carries the
* valid pts.
*/
}
while (rec_ret == RET_COPY_AGAIN);
usleep(priv->decode_wait);
return len;
}
void
mi_cmd_stack_list_frames (char *command, char **argv, int argc)
{
int frame_low;
int frame_high;
int i;
struct cleanup *cleanup_stack;
struct frame_info *fi;
enum ext_lang_bt_status result = EXT_LANG_BT_ERROR;
int raw_arg = 0;
int oind = 0;
enum opt
{
NO_FRAME_FILTERS
};
static const struct mi_opt opts[] =
{
{"-no-frame-filters", NO_FRAME_FILTERS, 0},
{ 0, 0, 0 }
};
/* Parse arguments. In this instance we are just looking for
--no-frame-filters. */
while (1)
{
char *oarg;
int opt = mi_getopt ("-stack-list-frames", argc, argv,
opts, &oind, &oarg);
if (opt < 0)
break;
switch ((enum opt) opt)
{
case NO_FRAME_FILTERS:
raw_arg = oind;
break;
}
}
/* After the last option is parsed, there should either be low -
high range, or no further arguments. */
if ((argc - oind != 0) && (argc - oind != 2))
error (_("-stack-list-frames: Usage: [--no-frame-filters] [FRAME_LOW FRAME_HIGH]"));
/* If there is a range, set it. */
if (argc - oind == 2)
{
frame_low = atoi (argv[0 + oind]);
frame_high = atoi (argv[1 + oind]);
}
else
{
/* Called with no arguments, it means we want the whole
backtrace. */
frame_low = -1;
frame_high = -1;
}
/* Let's position fi on the frame at which to start the
display. Could be the innermost frame if the whole stack needs
displaying, or if frame_low is 0. */
for (i = 0, fi = get_current_frame ();
fi && i < frame_low;
i++, fi = get_prev_frame (fi));
if (fi == NULL)
error (_("-stack-list-frames: Not enough frames in stack."));
cleanup_stack = make_cleanup_ui_out_list_begin_end (current_uiout, "stack");
if (! raw_arg && frame_filters)
{
int flags = PRINT_LEVEL | PRINT_FRAME_INFO;
int py_frame_low = frame_low;
/* We cannot pass -1 to frame_low, as that would signify a
relative backtrace from the tail of the stack. So, in the case
of frame_low == -1, assign and increment it. */
if (py_frame_low == -1)
py_frame_low++;
result = apply_ext_lang_frame_filter (get_current_frame (), flags,
NO_VALUES, current_uiout,
py_frame_low, frame_high);
}
/* Run the inbuilt backtrace if there are no filters registered, or
if "--no-frame-filters" has been specified from the command. */
if (! frame_filters || raw_arg || result == EXT_LANG_BT_NO_FILTERS)
{
/* Now let's print the frames up to frame_high, or until there are
frames in the stack. */
for (;
fi && (i <= frame_high || frame_high == -1);
i++, fi = get_prev_frame (fi))
{
QUIT;
/* Print the location and the address always, even for level 0.
If args is 0, don't print the arguments. */
print_frame_info (fi, 1, LOC_AND_ADDRESS, 0 /* args */, 0);
}
}
do_cleanups (cleanup_stack);
}
int main(int argc, const char * argv[]) {
dc1394_t *d;
dc1394camera_list_t *list;
dc1394error_t err;
dc1394camera_t *camera;
dc1394format7modeset_t modeset;
dc1394video_frame_t *frame;
FILE* imagefile;
char filename[256];
int i = 0;
d = dc1394_new();
if (!d) {
return 1;
}
err = dc1394_camera_enumerate(d, &list);
DC1394_ERR_RTN(err, "Failed to enumerate cameras");
if (list->num == 0) {
dc1394_log_error("No cameras found");
dc1394_free(d);
return 1;
}
printf("Detected %d cameras\n", list->num);
// Assume that Ladybug 5 is detected as camera #0
camera = dc1394_camera_new(d, list->ids[0].guid);
if (!camera) {
dc1394_log_error("Failed to initialize camera with guid %llx", list->ids[0].guid);
dc1394_free(d);
}
dc1394_camera_free_list(list);
printf("Using camera %s %s\n", camera->vendor, camera->model);
// Report camera info
err = dc1394_camera_print_info(camera, stdout);
DC1394_ERR_RTN(err, "Could not print camera info");
// Setup video mode, etc...
err = dc1394_video_set_operation_mode(camera, DC1394_OPERATION_MODE_1394B);
DC1394_ERR_RTN(err, "Could not set B mode");
err = dc1394_video_set_iso_speed(camera, DC1394_ISO_SPEED_MAX);
DC1394_ERR_RTN(err, "Could not set max speed");
err = dc1394_video_set_mode(camera, DC1394_VIDEO_MODE_FORMAT7_0);
DC1394_ERR_RTN(err, "Could not set DC1394_VIDEO_MODE_FORMAT7_0");
// Get format7 mode info
err = dc1394_format7_get_modeset(camera, &modeset);
DC1394_ERR_RTN(err, "Could not get format 7 mode info\n");
print_format7_info(&modeset);
// Set format 7 roi
err = dc1394_format7_set_roi(camera,
DC1394_VIDEO_MODE_FORMAT7_0,
modeset.mode[0].color_coding,
modeset.mode[0].max_packet_size,
modeset.mode[0].pos_x,
modeset.mode[0].pos_y,
modeset.mode[0].max_size_x,
modeset.mode[0].max_size_y);
DC1394_ERR_RTN(err, "Could not set max ROI");
// Set capture
err = dc1394_capture_setup(camera, 10, DC1394_CAPTURE_FLAGS_DEFAULT);
DC1394_ERR_RTN(err, "Could not setup capture");
err = dc1394_video_set_transmission(camera, DC1394_ON);
DC1394_ERR_RTN(err, "Could not start transmission");
while (i < NFRAMES) {
// Capture image
printf("Capturing image %d\n", i);
err = dc1394_capture_dequeue(camera, DC1394_CAPTURE_POLICY_WAIT, &frame);
DC1394_ERR_RTN(err, "Could not dequeue a frame");
// Do something with the image
print_frame_info(frame);
// Save the image
sprintf(filename, "%05d.pgm",i);
imagefile = fopen(filename, "wb");
if ( imagefile == NULL ) {
printf("Could not save image\n");
continue;
}
fprintf(imagefile, "P5\n%u %u 255\n", frame->size[0], frame->size[1]);
fwrite(frame->image, 1, frame->image_bytes, imagefile);
fclose(imagefile);
printf("Saved image %s\n", filename);
err = dc1394_capture_enqueue(camera, frame);
DC1394_ERR_RTN(err, "Could enqueue a frame");
i++;
}
dc1394_camera_free(camera);
dc1394_free(d);
return 0;
}
