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GPMF_writer.c
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GPMF_writer.c
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/*! @file GPMF_writer.cpp
*
* @brief GPMF formatter library
*
* @version 1.2.0
*
* (C) Copyright 2017 GoPro Inc (http://gopro.com/).
*
* Licensed under either:
* - Apache License, Version 2.0, http://www.apache.org/licenses/LICENSE-2.0
* - MIT license, http://opensource.org/licenses/MIT
* at your option.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <stdint.h>
#include <string.h>
#include "threadlock.h"
#include "GPMF_writer.h"
#ifdef DBG
#if _WINDOWS
#define DBG_MSG printf
#else
#define DBG_MSG gp_print
#endif
#else
#define DBG_MSG(...)
#endif
#define ERR_MSG gp_print
#define MDA_DEBUG 0
#if !_WINDOWS
#define strcpy_s(a,b,c) strcpy(a,c)
#define strncpy_s(a,b,c,d) strncpy(a,c,d)
#endif
#define SCAN_GPMF_FOR_STATE 1 // use existing GPMF size fields rather then mirroring variables -- improves thread re-entrancy
typedef struct GPMFWriterWorkspace
{
device_metadata *metadata_devices[GPMF_CHANNEL_MAX]; // List of openned metadata sources
LOCK metadata_device_list[GPMF_CHANNEL_MAX]; // Access lock to insurance for single access the metadata device list
uint32_t *work_buf;
int32_t work_buf_size;
size_t extrn_hndl[GPMF_CHANNEL_MAX][GPMF_EXT_PERFORMATTED_STREAMS];
uint32_t extrn_StrmFourCC[GPMF_CHANNEL_MAX][GPMF_EXT_PERFORMATTED_STREAMS];
uint32_t extrn_StrmDeviceID[GPMF_CHANNEL_MAX][GPMF_EXT_PERFORMATTED_STREAMS];
uint32_t *extrn_buffer[GPMF_CHANNEL_MAX][GPMF_EXT_PERFORMATTED_STREAMS];
uint32_t extrn_buffer_size[GPMF_CHANNEL_MAX];
} GPMFWriterWorkspace;
int32_t GPMFWriteTypeSize(int type)
{
int32_t ssize = -1;
switch ((int)type)
{
case GPMF_TYPE_STRING_ASCII: ssize = 1; break;
case GPMF_TYPE_SIGNED_BYTE: ssize = 1; break;
case GPMF_TYPE_UNSIGNED_BYTE: ssize = 1; break;
case GPMF_TYPE_STRING_UTF8: ssize = 1; break;
// These datatype can always be stored in Big-Endian
case GPMF_TYPE_SIGNED_SHORT: ssize = 2; break;
case GPMF_TYPE_UNSIGNED_SHORT: ssize = 2; break;
case GPMF_TYPE_FLOAT: ssize = 4; break;
case GPMF_TYPE_FOURCC: ssize = 4; break;
case GPMF_TYPE_SIGNED_LONG: ssize = 4; break;
case GPMF_TYPE_UNSIGNED_LONG: ssize = 4; break;
case GPMF_TYPE_Q15_16_FIXED_POINT: ssize = 4; break;
case GPMF_TYPE_Q31_32_FIXED_POINT: ssize = 8; break;
case GPMF_TYPE_DOUBLE: ssize = 8; break;
case GPMF_TYPE_SIGNED_64BIT_INT: ssize = 8; break;
case GPMF_TYPE_UNSIGNED_64BIT_INT: ssize = 8; break;
//All unknown or largeer than 8-bytes store as is:
case GPMF_TYPE_GUID: ssize = 16; break;
case GPMF_TYPE_UTC_DATE_TIME: ssize = 16; break;
case GPMF_TYPE_COMPRESSED: ssize = 1; break;
case GPMF_TYPE_COMPLEX: ssize = -1; break; // unsupported for structsize type
case GPMF_TYPE_NEST: ssize = -1; break; // unsupported for structsize type
default: ssize = -1; // unsupported for structsize type
}
return ssize;
}
int32_t GPMFWriteEndianSize(int type)
{
int32_t ssize = -1;
switch ((int)type)
{
case GPMF_TYPE_STRING_ASCII: ssize = 1; break;
case GPMF_TYPE_SIGNED_BYTE: ssize = 1; break;
case GPMF_TYPE_UNSIGNED_BYTE: ssize = 1; break;
case GPMF_TYPE_STRING_UTF8: ssize = 1; break;
// These datatype can always be stored in Big-Endian
case GPMF_TYPE_SIGNED_SHORT: ssize = 2; break;
case GPMF_TYPE_UNSIGNED_SHORT: ssize = 2; break;
case GPMF_TYPE_FLOAT: ssize = 4; break;
case GPMF_TYPE_FOURCC: ssize = 1; break;
case GPMF_TYPE_SIGNED_LONG: ssize = 4; break;
case GPMF_TYPE_UNSIGNED_LONG: ssize = 4; break;
case GPMF_TYPE_Q15_16_FIXED_POINT: ssize = 4; break;
case GPMF_TYPE_Q31_32_FIXED_POINT: ssize = 8; break;
case GPMF_TYPE_DOUBLE: ssize = 8; break;
case GPMF_TYPE_SIGNED_64BIT_INT: ssize = 8; break;
case GPMF_TYPE_UNSIGNED_64BIT_INT: ssize = 8; break;
case GPMF_TYPE_GUID: ssize = 1; break; // Do not byte swap
case GPMF_TYPE_UTC_DATE_TIME: ssize = 1; break; // Do not byte swap
//All unknown,complex or larger than 8-bytes store as is:
default: ssize = -1; // unsupported for structsize type
}
return ssize;
}
uint32_t GetChunkSize(uint32_t size)
{
uint32_t chunksize = 1;
uint32_t chunks = size;
while(chunks >= 65536)
{
chunksize <<= 1;
chunks = (size + chunksize-1) / chunksize;
}
return chunksize;
}
uint32_t GPMFWriteSetScratchBuffer( size_t ws_handle, uint32_t *buf, uint32_t buf_size)
{
if (ws_handle == 0 || buf == NULL || buf_size == 0)
{
return GPMF_ERROR_MEMORY;
}
GPMFWriterWorkspace *ws = (GPMFWriterWorkspace *)ws_handle;
ws->work_buf = buf;
ws->work_buf_size = buf_size;
return GPMF_ERROR_OK;
}
size_t GPMFWriteStreamOpen(size_t ws_handle, uint32_t channel, uint32_t device_id, char *device_name, char *buffer, uint32_t buffer_size)
{
device_metadata *dm, *prevdm, *nextdm;
GPMFWriterWorkspace *ws = (GPMFWriterWorkspace *)ws_handle;
uint32_t memory_allocated = 0;
if(ws == NULL) return 0;
Lock(&ws->metadata_device_list[channel]);
if (channel == GPMF_CHANNEL_SETTINGS)
{
if (buffer_size <= GPMF_GLOBAL_OVERHEAD)
{
if (buffer)
{
Unlock(&ws->metadata_device_list[channel]);
return 0; // buffer offered too small
}
buffer_size = GPMF_GLOBAL_OVERHEAD + 1024; // Minimum size + 1KByte
}
}
else
{
if (buffer_size <= GPMF_OVERHEAD)
{
if (buffer)
{
Unlock(&ws->metadata_device_list[channel]);
return 0; // buffer offered too small
}
buffer_size = GPMF_OVERHEAD + 1024; // Minimum size + 1KByte
}
}
if (buffer == NULL)
{
buffer = malloc(buffer_size);
memory_allocated = 1;
if (buffer == NULL)
{
Unlock(&ws->metadata_device_list[channel]);
return 0; // buffer offered too small
}
}
dm = (device_metadata*)buffer;
memset(dm, 0, sizeof(device_metadata));
CreateLock(&dm->device_lock);
dm->channel = channel;
dm->ws_handle = ws_handle;
dm->memory_allocated = memory_allocated;
if (channel == GPMF_CHANNEL_SETTINGS) // more sticky data is used for global settings and there is likely no aperoidic
{
strncpy_s(dm->device_name, sizeof(dm->device_name), device_name, sizeof(dm->device_name));
dm->payload_sticky_buffer = (uint32_t *)(dm + 1);
dm->payload_sticky_alloc_size = GPMF_GLOBAL_STICKY_PAYLOAD_SIZE; // use about half the buffer for sticky data
dm->payload_sticky_curr_size = 0;
dm->payload_sticky_buffer[0] = GPMF_KEY_END;
memset(dm->payload_sticky_buffer, 0, dm->payload_sticky_alloc_size);
dm->payload_aperiodic_buffer = (uint32_t *)(((char *)dm->payload_sticky_buffer) + dm->payload_sticky_alloc_size);
dm->payload_aperiodic_alloc_size = GPMF_GLOBAL_APERIODIC_PAYLOAD_SIZE; // just in case
dm->payload_aperiodic_curr_size = 0;
dm->payload_aperiodic_buffer[0] = GPMF_KEY_END;
dm->payload_buffer = (uint32_t *)(((char *)dm->payload_aperiodic_buffer) + dm->payload_aperiodic_alloc_size);
dm->payload_alloc_size = buffer_size - GPMF_GLOBAL_OVERHEAD;
dm->payload_curr_size = 0;
dm->payload_buffer[0] = GPMF_KEY_END;
memset(dm->payload_buffer, 0, dm->payload_alloc_size);
}
else
{
strncpy_s(dm->device_name, sizeof(dm->device_name), device_name, sizeof(dm->device_name));
dm->payload_sticky_buffer = (uint32_t *)(dm + 1);
dm->payload_sticky_alloc_size = GPMF_STICKY_PAYLOAD_SIZE;
dm->payload_sticky_curr_size = 0;
dm->payload_sticky_buffer[0] = GPMF_KEY_END;
memset(dm->payload_sticky_buffer, 0, dm->payload_sticky_alloc_size);
dm->payload_aperiodic_buffer = (uint32_t *)(((char *)dm->payload_sticky_buffer) + dm->payload_sticky_alloc_size);
dm->payload_aperiodic_alloc_size = GPMF_APERIODIC_PAYLOAD_SIZE;
dm->payload_aperiodic_curr_size = 0;
dm->payload_aperiodic_buffer[0] = GPMF_KEY_END;
dm->payload_buffer = (uint32_t *)(((char *)dm->payload_aperiodic_buffer) + dm->payload_aperiodic_alloc_size);
dm->payload_alloc_size = buffer_size - GPMF_OVERHEAD;
dm->payload_curr_size = 0;
dm->payload_buffer[0] = GPMF_KEY_END;
memset(dm->payload_buffer, 0, dm->payload_alloc_size);
}
if(ws->metadata_devices[channel] == NULL) // This is the first device list
{
ws->metadata_devices[channel] = dm;
dm->next = NULL;
dm->prev = NULL;
}
else
{
// Add to the end of the list
prevdm = nextdm = ws->metadata_devices[channel];
do
{
prevdm = nextdm;
nextdm = prevdm->next;
} while(nextdm);
prevdm->next = dm;
dm->prev = prevdm;
}
if (device_id)
{
dm->device_id = device_id;
if(device_id != GPMF_DEVICE_ID_PREFORMATTED)
ws->metadata_devices[channel]->auto_device_id = device_id;
}
else
{
dm->device_id = ++ws->metadata_devices[channel]->auto_device_id;
}
if(device_id == GPMF_DEVICE_ID_PREFORMATTED) // use this stream to embed all external streams
{
int i;
uint32_t *extbuffer = &dm->payload_buffer[3];
uint32_t strm_buffer_long_size = ((dm->payload_alloc_size-12) / GPMF_EXT_PERFORMATTED_STREAMS) >> 2;
ws->extrn_buffer_size[channel] = strm_buffer_long_size * 4; // bytes per extern stream buffer
for(i=0; i<GPMF_EXT_PERFORMATTED_STREAMS; i++)
{
ws->extrn_buffer[channel][i] = extbuffer;
extbuffer += strm_buffer_long_size;
}
}
// Sort the list to make sure opens with the same device_id are next to each other (a storage efficiency.)
bubblesort:
prevdm = nextdm = ws->metadata_devices[channel];
do
{
prevdm = nextdm;
nextdm = prevdm->next;
if(prevdm && nextdm)
{
if(nextdm->device_id < prevdm->device_id)
{
device_metadata *pprevdm, *nnextdm, *highdm, *lowdm;
lowdm = nextdm;
highdm = prevdm;
pprevdm = prevdm->prev;
nnextdm = nextdm->next;
if(pprevdm)
pprevdm->next = lowdm;
if(nnextdm)
nnextdm->prev = highdm;
lowdm->prev = pprevdm;
lowdm->next = highdm;
highdm->prev = lowdm;
highdm->next = nnextdm;
goto bubblesort;
}
}
} while(nextdm);
Unlock(&ws->metadata_device_list[channel]);
return (size_t)dm;
}
void *GPMFWriteStreamClose(size_t dm_handle) // return the ptr the buffer if needs to be freed.
{
device_metadata *dm = (device_metadata *)dm_handle;
if (dm)
{
GPMFWriterWorkspace *ws = (GPMFWriterWorkspace *)dm->ws_handle;
device_metadata *prev, *next;
uint32_t channel = dm->channel;
Lock(&ws->metadata_device_list[channel]);
Lock(&dm->device_lock);
next = dm->next;
prev = dm->prev;
Unlock(&dm->device_lock);
DeleteLock(&dm->device_lock);
if (ws->metadata_devices[channel] == dm)
ws->metadata_devices[channel] = NULL;
// Repair the device list.
if (prev)
{
if (ws->metadata_devices[channel] == NULL)
ws->metadata_devices[channel] = prev;
prev->next = next;
}
if (next)
{
if (ws->metadata_devices[channel] == NULL)
ws->metadata_devices[channel] = next;
next->prev = prev;
}
Unlock(&ws->metadata_device_list[channel]);
if (dm->memory_allocated == 1)
{
free(dm);
dm = NULL;
}
}
return (void *)dm;
}
//DNEWMAN20160510 use the device buffer if there is plenty of unused memory.
//In low memory situations (large number of samples in a stream, prevents using that stream buffer for formatting) use the global scratch g_work_buf;
static uint32_t *GetScratchBuf(device_metadata *dm, uint32_t requiredsize, uint32_t flags)
{
if(dm)
{
GPMFWriterWorkspace *ws = (GPMFWriterWorkspace *)dm->ws_handle;
uint32_t freebytes = dm->payload_alloc_size - dm->payload_curr_size;
if(flags & GPMF_FLAGS_STICKY)
{
freebytes = dm->payload_sticky_alloc_size - dm->payload_sticky_curr_size;
if(freebytes > requiredsize * 2)
{
uint32_t *buf = dm->payload_sticky_buffer;
buf += dm->payload_sticky_alloc_size/4;
buf -= (requiredsize/4) + 2;
return buf; // use the end of the device sticky buffer for scratch memory
}
}
freebytes = dm->payload_alloc_size - dm->payload_curr_size;
if(freebytes > requiredsize * 2)
{
uint32_t *buf = dm->payload_buffer;
buf += dm->payload_alloc_size/4;
buf -= (requiredsize/4) + 2;
return buf; // use the end of the device buffer for scratch memory
}
if (requiredsize < (uint32_t)ws->work_buf_size)
{
DBG_MSG("ws->work_buf used\n");
return ws->work_buf; /// otherwise use the risky global buffer.
}
}
return NULL;
}
static void AccumulateSWAPPED(uint32_t typesize, uint32_t *newdata, uint32_t *currdata)
{
switch (GPMF_SAMPLE_TYPE(typesize))
{
case GPMF_TYPE_UNSIGNED_LONG:
{
uint32_t in, cur;
in = BYTESWAP32(*newdata);
cur = BYTESWAP32(*currdata);
cur += in;
*newdata = BYTESWAP32(cur);
}
break;
}
}
static uint32_t IncreasingSortOnType(void *input_data, void *output_data, char storage_type)
{
switch (storage_type)
{
case GPMF_TYPE_STRING_ASCII:
case GPMF_TYPE_SIGNED_BYTE:
{
char *in = (char *)input_data;
char *out = (char *)output_data;
if (*in <= *out)
return 0;
}
break;
case GPMF_TYPE_UNSIGNED_BYTE:
{
unsigned char *in = (unsigned char *)input_data;
unsigned char *out = (unsigned char *)output_data;
if (*in <= *out)
return 0;
}
break;
case GPMF_TYPE_SIGNED_SHORT:
{
short *in = (short *)input_data;
short *out = (short *)output_data;
if (BYTESWAP16(*in) <= BYTESWAP16(*out))
return 0;
}
break;
case GPMF_TYPE_UNSIGNED_SHORT:
{
unsigned short *in = (unsigned short *)input_data;
unsigned short *out = (unsigned short *)output_data;
if (BYTESWAP16(*in) <= BYTESWAP16(*out))
return 0;
}
break;
case GPMF_TYPE_SIGNED_LONG:
{
long *in = (long *)input_data;
long *out = (long *)output_data;
if (BYTESWAP32(*in) <= BYTESWAP32(*out))
return 0;
}
break;
case GPMF_TYPE_UNSIGNED_LONG:
{
unsigned long *in = (unsigned long *)input_data;
unsigned long *out = (unsigned long *)output_data;
if (BYTESWAP32(*in) <= BYTESWAP32(*out))
return 0;
}
break;
case GPMF_TYPE_FLOAT:
{
unsigned long in = *((unsigned long *)input_data);
unsigned long out = *((unsigned long *)output_data);
float *fin = (float *)∈
float *fout = (float *)&out;
in = BYTESWAP32(in);
out = BYTESWAP32(out);
if (*fin <= *fout)
return 0;
}
break;
}
return 1;
}
static uint32_t SeekEndGPMF(uint32_t *payload_buf, uint32_t alloc_size)
{
uint32_t pos = 0;
while(GPMF_VALID_FOURCC(payload_buf[pos]))
{
uint32_t packetsize = GPMF_DATA_PACKEDSIZE(payload_buf[pos+1]);
uint32_t datasize = (packetsize+3)&~3;
uint32_t nextpos = (8 + datasize) >> 2;
if(nextpos == 0) // this shouldn't happen, so return the last valid position
{
payload_buf[pos] = GPMF_KEY_END;
return pos*4;
}
if((pos+nextpos)*4 >= alloc_size) // this shouldn't happen, so return the last valid position with the buffer limits.
{
payload_buf[pos] = GPMF_KEY_END;
return pos*4;
}
if(payload_buf[pos+nextpos] == GPMF_KEY_END)
{
return ((pos*4) + 8 + packetsize);
}
pos += nextpos;
}
return 0;
}
void AppendFormattedMetadata(device_metadata *dm, uint32_t *formatted, uint32_t bytelen, uint32_t flags, uint32_t sample_count, uint64_t TimeStamp)
{
uint32_t count_msg[5];
uint32_t tag = formatted[0], *payload_ptr;
uint32_t typesize = formatted[1];
uint32_t samples = GPMF_SAMPLES(typesize);
uint32_t *payload_buf, *alloc_size, *curr_size;
uint32_t curr_size_longs;
uint32_t curr_size_bytes;
uint8_t *payload_byte_ptr;
if(!GPMF_VALID_FOURCC(tag)) return;
if(!(flags & GPMF_FLAGS_LOCKED)) // Use this internal flag if called within a Lock()
Lock(&dm->device_lock);
if (flags & GPMF_FLAGS_GROUPED)
{
dm->groupedFourCC = tag;
sample_count = 1;
}
if(TimeStamp != 0 && flags & GPMF_FLAGS_STORE_ALL_TIMESTAMPS)
{
uint32_t swap64timestamp[2];
uint64_t *ptr64 = (uint64_t *)&swap64timestamp[0];
uint32_t buf[5];
uint32_t stampflags = GPMF_FLAGS_LOCKED | GPMF_FLAGS_DONT_COUNT;
*ptr64 = BYTESWAP64(TimeStamp);
// TimeStamp = 0; // with this commented out it will store both jitter removed and raw timestamps.
uint32_t i = 0;
for (i = 0; i < sample_count; i++)
{
buf[0] = GPMF_KEY_TIME_STAMPS;
buf[1] = MAKEID('J', 8, 0, 1);
buf[2] = swap64timestamp[0];
buf[3] = swap64timestamp[1];
buf[4] = GPMF_KEY_END;
AppendFormattedMetadata(dm, buf, 16, stampflags, 1, 0); // Timing is Sticky, only one value per data stream, it is simpy updated if sent more than once.
}
}
again:
if (flags & GPMF_FLAGS_STICKY)
{ //sticky
payload_buf = dm->payload_sticky_buffer;
alloc_size = &dm->payload_sticky_alloc_size;
curr_size = &dm->payload_sticky_curr_size;
}
else if (flags & GPMF_FLAGS_APERIODIC)
{ //CV
payload_buf = dm->payload_aperiodic_buffer;
alloc_size = &dm->payload_aperiodic_alloc_size;
curr_size = &dm->payload_aperiodic_curr_size;
}
else
{
payload_buf = dm->payload_buffer;
alloc_size = &dm->payload_alloc_size;
curr_size = &dm->payload_curr_size;
dm->last_nonsticky_fourcc = tag;
dm->last_nonsticky_typesize = typesize;
if (TimeStamp)
{
if (dm->payloadTimeStampCount >= MAX_TIMESTAMPS) // Compact the timestamp for more room
{
uint32_t pos = 0, downsmp = 0;
while (dm->deltaTimeStamp[pos] > dm->deltaTimeStamp[pos + 1])
pos++, downsmp++;
do
{
for (; pos < ((MAX_TIMESTAMPS*3) >> 2);)
{
dm->deltaTimeStamp[downsmp] = dm->deltaTimeStamp[pos] + dm->deltaTimeStamp[pos + 1];
dm->sampleCount[downsmp] = dm->sampleCount[pos] + dm->sampleCount[pos + 1];
downsmp++;
pos += 2;
}
for (; pos < MAX_TIMESTAMPS; pos++)
{
dm->deltaTimeStamp[downsmp] = dm->deltaTimeStamp[pos];
dm->sampleCount[downsmp] = dm->sampleCount[pos];
downsmp++;
}
for (pos = downsmp; pos < MAX_TIMESTAMPS; pos++)
{
dm->deltaTimeStamp[pos] = 0;
dm->sampleCount[pos] = 0;
}
if (downsmp >= MAX_TIMESTAMPS)
{
pos = 0, downsmp = 0;
}
} while (downsmp == 0);
dm->payloadTimeStampCount = downsmp;
}
if(dm->payloadTimeStampCount == 0)
{
#if MDA_DEBUG && 0 // We were seeing invalid timestamps.
if(TimeStamp >= dm->lastTimeStamp)
{
if(dm->lastTimeStamp == 0 || TimeStamp < dm->lastTimeStamp + 2000000) // less then two seconds later
dm->firstTimeStamp = dm->lastTimeStamp = TimeStamp;
}
else {
//TODO - does this happen?
}
#else
dm->firstTimeStamp = dm->lastTimeStamp = TimeStamp;
#endif
}
else
{
#if MDA_DEBUG // We were seeing invalid timestamps.
if(TimeStamp >= dm->lastTimeStamp)
{
if(dm->lastTimeStamp == 0 || TimeStamp < dm->lastTimeStamp + 2000000) // less then two seconds later
{
// likely normal working timestamps
dm->deltaTimeStamp[dm->payloadTimeStampCount-1] = (uint32_t)(TimeStamp - dm->lastTimeStamp);
dm->lastTimeStamp = TimeStamp;
}
else // Something bizarre is happening, large timestamps, why?
{
dm->deltaTimeStamp[dm->payloadTimeStampCount-1] = 1;
dm->lastTimeStamp++;
}
}
else // We should not have negative timestamps.
{
if(dm->payloadTimeStampCount >= 2) // if we can, just interpolate a valid timestamp
{
dm->lastTimeStamp += dm->deltaTimeStamp[dm->payloadTimeStampCount-2]-1;
dm->deltaTimeStamp[dm->payloadTimeStampCount-1] = dm->deltaTimeStamp[dm->payloadTimeStampCount-2]-1; //DANHACK
}
else // otherwise just increment
{
dm->deltaTimeStamp[dm->payloadTimeStampCount-1] = 1; //DANHACK
dm->lastTimeStamp++;
}
}
#else
dm->deltaTimeStamp[dm->payloadTimeStampCount-1] = (uint32_t)(TimeStamp - dm->lastTimeStamp);
dm->lastTimeStamp = TimeStamp;
#endif
}
dm->sampleCount[dm->payloadTimeStampCount] = (uint16_t)sample_count;
dm->payloadTimeStampCount++;
}
}
#if SCAN_GPMF_FOR_STATE
curr_size_bytes = SeekEndGPMF(payload_buf, *alloc_size);
#else
curr_size_bytes = *curr_size;
#endif
curr_size_longs = (curr_size_bytes+3)>>2;
if(curr_size_bytes <= 8 && bytelen < *alloc_size && !(flags & GPMF_FLAGS_GROUPED)) // First samples
{
payload_buf[(bytelen)>>2] = GPMF_KEY_END; // clear non-aligned
memcpy(payload_buf, formatted, bytelen);
payload_buf[(bytelen+3)>>2] = GPMF_KEY_END; // add the terminator
*curr_size = bytelen;
}
else if ((bytelen + curr_size_bytes + 4) < *alloc_size || flags & GPMF_FLAGS_SORTED) // append samples that fit
{
uint32_t curr_pos = 0;
uint32_t curr_byte_pos = 0;
payload_ptr = payload_buf;
tryagain:
while((tag != *payload_ptr || flags & GPMF_FLAGS_GROUPED) && *payload_ptr != GPMF_KEY_END)
{
uint32_t tsize = *(payload_ptr+1);
uint32_t offset = 2 + ((GPMF_DATA_SIZE(tsize))>>2);
curr_byte_pos += 8 + ((GPMF_DATA_SIZE(tsize)));
payload_ptr += offset, curr_pos += offset;
}
if (tag == *payload_ptr) // found existing metadata of the same tag to append
{
uint32_t currtypesize = *(payload_ptr+1);
if (GPMF_SAMPLE_TYPE(currtypesize) == GPMF_TYPE_NEST)
{
uint32_t tsize = *(payload_ptr + 1);
uint32_t offset = 2 + ((GPMF_DATA_SIZE(tsize)) >> 2);
curr_byte_pos += 8 + ((GPMF_DATA_SIZE(tsize)));
payload_ptr += offset, curr_pos += offset;
goto tryagain;
}
if(flags & GPMF_FLAGS_STICKY)// sticky, updata the existing data, do not append
{
if (GPMF_DATA_PACKEDSIZE(currtypesize) == GPMF_DATA_PACKEDSIZE(typesize))
{
payload_ptr += 2;
if (flags & GPMF_FLAGS_ACCUMULATE)
{
AccumulateSWAPPED(typesize, &formatted[2], payload_ptr);
}
memcpy(payload_ptr, &formatted[2], bytelen - 8);
payload_ptr += (bytelen - 8) >> 2, curr_pos += (bytelen - 8) >> 2;
}
else // what do we do if the sticky size changes?
{
if (payload_ptr[(GPMF_DATA_SIZE(currtypesize)+8)>>2] == GPMF_KEY_END) // it is the last TAG in sticky
{
dm->payload_sticky_curr_size -= (GPMF_DATA_SIZE(currtypesize)+8);
*payload_ptr = GPMF_KEY_END;
}
else
{
memmove(payload_ptr, payload_ptr+((GPMF_DATA_SIZE(currtypesize)+8)>>2), 4 + dm->payload_sticky_curr_size - (curr_byte_pos+GPMF_DATA_SIZE(currtypesize)+8));
dm->payload_sticky_curr_size -= GPMF_DATA_SIZE(currtypesize) + 8;
dm->payload_sticky_buffer[1 + (dm->payload_sticky_curr_size>>2)] = GPMF_KEY_END;
}
goto tryagain;
}
}
else if (flags & GPMF_FLAGS_SORTED)
{
uint32_t pos;
//uint32_t offset_bytes = 8 + GPMF_DATA_PACKEDSIZE(currtypesize);
uint32_t newdata_longs = ((bytelen - 8 + 3 - (GPMF_DATA_SIZE(currtypesize) - GPMF_DATA_PACKEDSIZE(currtypesize))) >> 2);
//uint32_t offset_longs = (offset_bytes + 3) >> 2;
uint32_t newsamples = GPMF_SAMPLES(currtypesize) + samples;
uint32_t newtypesize = MAKEID(GPMF_SAMPLE_TYPE(currtypesize), GPMF_SAMPLE_SIZE(currtypesize), newsamples >> 8, newsamples & 0xff);
char type = GPMF_SAMPLE_TYPE(payload_ptr[1]);
uint32_t stored_samples = GPMF_SAMPLES(payload_ptr[1]);
uint32_t incoming_samples = GPMF_SAMPLES(formatted[1]);
if (type == '?')
type = dm->complex_type[0];
if (incoming_samples != 1)
{
//TODO handle more than one sample
}
else
{
uint8_t *ptr = (uint8_t *)&payload_ptr[2];
int packetsize = GPMF_DATA_PACKEDSIZE(currtypesize);
for (pos = 0; pos < stored_samples; pos++)
{
if (IncreasingSortOnType((void *)&formatted[2], ptr, type))
{
char *src = (char *)ptr;
if ((bytelen - 8 + curr_size_bytes + 4) < *alloc_size)
{
memmove(src + bytelen - 8, src, packetsize);
memcpy(src, &formatted[2], bytelen - 8);
payload_ptr = &payload_buf[curr_pos];
payload_buf[curr_size_longs + newdata_longs] = GPMF_KEY_END; // move the terminator
payload_ptr[1] = newtypesize;
*curr_size = (curr_size_longs + newdata_longs) << 2;
break;
}
else
{
memmove(src + bytelen - 8, src, packetsize - (bytelen-8));
memcpy(src, &formatted[2], bytelen - 8);
payload_ptr = &payload_buf[curr_pos];
break;
}
}
else
{
ptr += bytelen - 8;
packetsize -= bytelen - 8;
}
}
if (pos == stored_samples) // store at the end, if room
{
char *src = (char *)ptr;
if ((bytelen - 8 + curr_size_bytes + 4) < *alloc_size)
{
memcpy(src, &formatted[2], bytelen - 8);
payload_ptr = &payload_buf[curr_pos];
payload_buf[curr_size_longs + newdata_longs] = GPMF_KEY_END; // move the terminator
payload_ptr[1] = newtypesize;
*curr_size = (curr_size_longs + newdata_longs) << 2;
}
}
}
}
else
{
uint32_t pos;
uint32_t offset_bytes = 8 + GPMF_DATA_PACKEDSIZE(currtypesize);
uint32_t newdata_longs = ((bytelen - 8 + 3 - (GPMF_DATA_SIZE(currtypesize) - GPMF_DATA_PACKEDSIZE(currtypesize))) >> 2);
uint32_t offset_longs = (offset_bytes + 3) >> 2;
uint32_t newsamples = GPMF_SAMPLES(currtypesize) + samples;
uint32_t newtypesize = MAKEID(GPMF_SAMPLE_TYPE(currtypesize), GPMF_SAMPLE_SIZE(currtypesize), newsamples>>8, newsamples&0xff);
payload_ptr = &payload_buf[curr_pos];
if (payload_buf[curr_size_longs] == GPMF_KEY_END)
payload_buf[curr_size_longs + newdata_longs] = GPMF_KEY_END; // move the terminator
if(payload_ptr[offset_longs] != GPMF_KEY_END) // Need to make room
{
curr_pos += offset_longs;
//make room
for (pos = curr_size_longs + newdata_longs; pos >= curr_pos+1; pos--)
payload_buf[pos] = payload_buf[pos - newdata_longs];
}
// Insert/Append new data
payload_ptr[1] = newtypesize;
payload_byte_ptr = (uint8_t *)payload_ptr; pos = 0;
payload_byte_ptr += offset_bytes; pos += offset_bytes;
memcpy(payload_byte_ptr, &formatted[2], bytelen-8);
payload_byte_ptr += bytelen - 8; pos += bytelen - 8;
if (pos & 3)
payload_byte_ptr += 4 - (pos & 3);
payload_ptr = (uint32_t *)payload_byte_ptr;
*curr_size = ((*curr_size + 3)&~3) + newdata_longs * 4;
}
}
else if(*payload_ptr == 0) //append new
{
if (curr_size_longs > 0 && flags & GPMF_FLAGS_ACCUMULATE) // Add first
{
uint32_t pos;
uint32_t newdata_longs = ((bytelen + 3) >> 2);
//make room
for (pos = curr_size_longs + newdata_longs; pos >= newdata_longs; pos--)
payload_buf[pos] = payload_buf[pos - newdata_longs];
memcpy(payload_buf, formatted, bytelen);
*curr_size = (curr_size_longs + newdata_longs) << 2;
}
else
{
payload_ptr[(bytelen) >> 2] = GPMF_KEY_END; // clear non-aligned
memcpy(payload_ptr, formatted, bytelen);
*curr_size = (curr_size_longs * 4) + bytelen;
payload_ptr += (bytelen + 3) >> 2;
*payload_ptr = GPMF_KEY_END; // add the terminator
}
}
}
else
{
DBG_MSG("AppendFormattedMetadata, data doesn't fit\n");
// TODO extend the buffer size if is doesn't fit.
}
if (!(flags & GPMF_FLAGS_STICKY) && !(flags & GPMF_FLAGS_DONT_COUNT) &&
dm->channel != GPMF_CHANNEL_SETTINGS)
{
count_msg[0] = GPMF_KEY_TOTAL_SAMPLES;
count_msg[1] = GPMF_MAKE_TYPE_SIZE_COUNT('L', 4, 1);
if (GPMF_SAMPLE_TYPE(formatted[2]) == GPMF_TYPE_STRING_ASCII || (flags & GPMF_FLAGS_GROUPED) || (flags & GPMF_FLAGS_APERIODIC)) // Only count strings as one (not the number of characters) and Groupped payloads as one
count_msg[2] = BYTESWAP32(1);
else
count_msg[2] = BYTESWAP32(sample_count);
count_msg[3] = 0;
tag = count_msg[0];
typesize = count_msg[1];
formatted = count_msg;
sample_count = 1;
bytelen = 12;
flags = GPMF_FLAGS_STICKY_ACCUMULATE | (flags & GPMF_FLAGS_LOCKED); //Preserve the LOCKED flag if set
goto again;
}
if(!(flags & GPMF_FLAGS_LOCKED))
Unlock(&dm->device_lock);
}
void GPMFWriteStreamReset(size_t dm_handle)
{
device_metadata *dm = (device_metadata *)dm_handle;
if(dm)
{
GPMFWriterWorkspace *ws = (GPMFWriterWorkspace *)dm->ws_handle;
Lock(&dm->device_lock);
// Clear all non-stick data
dm->payload_curr_size = 0;
*dm->payload_buffer = 0;
// Clear accumators in sticky data
if(dm->payload_sticky_curr_size > 0)
{
uint32_t pos = 0;
uint32_t *sticky = dm->payload_sticky_buffer;
if(sticky)
{
uint32_t longsize = //dm->payload_sticky_curr_size>>2;
SeekEndGPMF(sticky, dm->payload_sticky_alloc_size)>>2;
while(pos < longsize && GPMF_VALID_FOURCC(sticky[pos]))