/*****************************************************************************
* dvbpsi_GatherCATSections
*****************************************************************************
* Callback for the PSI decoder.
*****************************************************************************/
void dvbpsi_GatherCATSections(dvbpsi_decoder_t* p_decoder,
dvbpsi_psi_section_t* p_section)
{
dvbpsi_cat_decoder_t* p_cat_decoder
= (dvbpsi_cat_decoder_t*)p_decoder->p_private_decoder;
int b_append = 1;
int b_reinit = 0;
unsigned int i;
DVBPSI_DEBUG_ARG("CAT decoder",
"Table version %2d, " "i_extension %5d, "
"section %3d up to %3d, " "current %1d",
p_section->i_version, p_section->i_extension,
p_section->i_number, p_section->i_last_number,
p_section->b_current_next);
if(p_section->i_table_id != 0x01)
{
/* Invalid table_id value */
DVBPSI_ERROR_ARG("CAT decoder",
"invalid section (table_id == 0x%02x)",
p_section->i_table_id);
b_append = 0;
}
if(b_append && !p_section->b_syntax_indicator)
{
/* Invalid section_syntax_indicator */
DVBPSI_ERROR("CAT decoder",
"invalid section (section_syntax_indicator == 0)");
b_append = 0;
}
if(b_append)
{
/* TS discontinuity check */
if(p_decoder->b_discontinuity)
{
b_reinit = 1;
p_decoder->b_discontinuity = 0;
}
else
{
/* Perform some few sanity checks */
if(p_cat_decoder->p_building_cat)
{
if(p_cat_decoder->p_building_cat->i_version != p_section->i_version)
{
/* version_number */
DVBPSI_ERROR("CAT decoder",
"'version_number' differs"
" whereas no discontinuity has occured");
b_reinit = 1;
}
else if(p_cat_decoder->i_last_section_number
!= p_section->i_last_number)
{
/* last_section_number */
DVBPSI_ERROR("CAT decoder",
"'last_section_number' differs"
" whereas no discontinuity has occured");
b_reinit = 1;
}
}
else
{
if( (p_cat_decoder->b_current_valid)
&& (p_cat_decoder->current_cat.i_version == p_section->i_version)
&& (p_cat_decoder->current_cat.b_current_next ==
p_section->b_current_next))
{
/* Don't decode since this version is already decoded */
b_append = 0;
}
}
}
}
/* Reinit the decoder if wanted */
if(b_reinit)
{
/* Force redecoding */
p_cat_decoder->b_current_valid = 0;
/* Free structures */
if(p_cat_decoder->p_building_cat)
{
free(p_cat_decoder->p_building_cat);
p_cat_decoder->p_building_cat = NULL;
}
/* Clear the section array */
for(i = 0; i <= 255; i++)
{
if(p_cat_decoder->ap_sections[i] != NULL)
{
dvbpsi_DeletePSISections(p_cat_decoder->ap_sections[i]);
p_cat_decoder->ap_sections[i] = NULL;
}
}
}
/* Append the section to the list if wanted */
if(b_append)
{
int b_complete;
/* Initialize the structures if it's the first section received */
if(!p_cat_decoder->p_building_cat)
{
p_cat_decoder->p_building_cat =
(dvbpsi_cat_t*)malloc(sizeof(dvbpsi_cat_t));
dvbpsi_InitCAT(p_cat_decoder->p_building_cat,
p_section->i_version,
p_section->b_current_next);
p_cat_decoder->i_last_section_number = p_section->i_last_number;
}
/* Fill the section array */
if(p_cat_decoder->ap_sections[p_section->i_number] != NULL)
{
DVBPSI_DEBUG_ARG("CAT decoder", "overwrite section number %d",
p_section->i_number);
dvbpsi_DeletePSISections(p_cat_decoder->ap_sections[p_section->i_number]);
}
p_cat_decoder->ap_sections[p_section->i_number] = p_section;
/* Check if we have all the sections */
b_complete = 0;
for(i = 0; i <= p_cat_decoder->i_last_section_number; i++)
{
if(!p_cat_decoder->ap_sections[i])
break;
if(i == p_cat_decoder->i_last_section_number)
b_complete = 1;
}
if(b_complete)
{
/* Save the current information */
p_cat_decoder->current_cat = *p_cat_decoder->p_building_cat;
p_cat_decoder->b_current_valid = 1;
/* Chain the sections */
if(p_cat_decoder->i_last_section_number)
{
for(i = 0; (int)i <= p_cat_decoder->i_last_section_number - 1; i++)
p_cat_decoder->ap_sections[i]->p_next =
p_cat_decoder->ap_sections[i + 1];
}
/* Decode the sections */
dvbpsi_DecodeCATSections(p_cat_decoder->p_building_cat,
p_cat_decoder->ap_sections[0]);
/* Delete the sections */
dvbpsi_DeletePSISections(p_cat_decoder->ap_sections[0]);
/* signal the new CAT */
p_cat_decoder->pf_callback(p_cat_decoder->p_cb_data,
p_cat_decoder->p_building_cat);
/* Reinitialize the structures */
p_cat_decoder->p_building_cat = NULL;
for(i = 0; i <= p_cat_decoder->i_last_section_number; i++)
p_cat_decoder->ap_sections[i] = NULL;
}
}
else
{
dvbpsi_DeletePSISections(p_section);
}
}
/*****************************************************************************
* dvbpsi_GatherPMTSections
*****************************************************************************
* Callback for the PSI decoder.
*****************************************************************************/
void DMA_dvbpsi_GatherPMTSections(dvbpsi_decoder_t* p_decoder,
dvbpsi_psi_section_t* p_section)
{
dvbpsi_pmt_decoder_t* p_pmt_decoder
= (dvbpsi_pmt_decoder_t*)p_decoder->p_private_decoder;
int b_append = 1;
int b_reinit = 0;
unsigned int i;
#if 0
DVBPSI_DEBUG_ARG("PMT decoder",
"Table version %2d, " "i_extension %5d, "
"section %3d up to %3d, " "current %1d",
p_section->i_version, p_section->i_extension,
p_section->i_number, p_section->i_last_number,
p_section->b_current_next);
#endif
if(p_section->i_table_id != 0x02)
{
/* Invalid table_id value */
#if 0
DVBPSI_ERROR_ARG("PMT decoder",
"invalid section (table_id == 0x%02x)",
p_section->i_table_id);
#endif
b_append = 0;
}
if(b_append && !p_section->b_syntax_indicator)
{
/* Invalid section_syntax_indicator */
#if 0
DMA_DVBPSI_ERROR("PMT decoder",
"invalid section (section_syntax_indicator == 0)");
#endif
b_append = 0;
}
/* Now if b_append is true then we have a valid PMT section */
if(b_append && (p_pmt_decoder->i_program_number != p_section->i_extension))
{
/* Invalid program_number */
#if 0
DMA_DMA_DVBPSI_ERROR("PMT decoder",
"'program_number' don't match");
#endif
b_append = 0;
}
if(b_append)
{
/* TS discontinuity check */
if(p_decoder->b_discontinuity)
{
b_reinit = 1;
p_decoder->b_discontinuity = 0;
}
else
{
/* Perform some few sanity checks */
if(p_pmt_decoder->p_building_pmt)
{
if(p_pmt_decoder->p_building_pmt->i_version != p_section->i_version)
{
/* version_number */
#if 0
DMA_DMA_DVBPSI_ERROR("PMT decoder",
"'version_number' differs"
" whereas no discontinuity has occured");
#endif
b_reinit = 1;
}
else if(p_pmt_decoder->i_last_section_number
!= p_section->i_last_number)
{
/* last_section_number */
#if 0
DVBPSI_ERROR("PMT decoder",
"'last_section_number' differs"
" whereas no discontinuity has occured");
#endif
b_reinit = 1;
}
}
else
{
if( (p_pmt_decoder->b_current_valid)
&& (p_pmt_decoder->current_pmt.i_version == p_section->i_version))
{
/* Signal a new PMT if the previous one wasn't active */
if( (!p_pmt_decoder->current_pmt.b_current_next)
&& (p_section->b_current_next))
{
dvbpsi_pmt_t* p_pmt = (dvbpsi_pmt_t*)malloc(sizeof(dvbpsi_pmt_t));
p_pmt_decoder->current_pmt.b_current_next = 1;
*p_pmt = p_pmt_decoder->current_pmt;
p_pmt_decoder->pf_callback(p_pmt_decoder->p_cb_data, p_pmt);
}
/* Don't decode since this version is already decoded */
b_append = 0;
}
}
}
}
/* Reinit the decoder if wanted */
if(b_reinit)
{
/* Force redecoding */
p_pmt_decoder->b_current_valid = 0;
/* Free structures */
if(p_pmt_decoder->p_building_pmt)
{
free(p_pmt_decoder->p_building_pmt);
p_pmt_decoder->p_building_pmt = NULL;
}
/* Clear the section array */
for(i = 0; i <= 255; i++)
{
if(p_pmt_decoder->ap_sections[i] != NULL)
{
DMA_dvbpsi_DeletePSISections(p_pmt_decoder->ap_sections[i]);
p_pmt_decoder->ap_sections[i] = NULL;
}
}
}
/* Append the section to the list if wanted */
if(b_append)
{
int b_complete;
/* Initialize the structures if it's the first section received */
if(!p_pmt_decoder->p_building_pmt)
{
p_pmt_decoder->p_building_pmt =
(dvbpsi_pmt_t*)malloc(sizeof(dvbpsi_pmt_t));
DMA_dvbpsi_InitPMT(p_pmt_decoder->p_building_pmt,
p_pmt_decoder->i_program_number,
p_section->i_version,
p_section->b_current_next,
((unsigned short)(p_section->p_payload_start[0] & 0x1f) << 8)
| p_section->p_payload_start[1]);
p_pmt_decoder->i_last_section_number = p_section->i_last_number;
}
/* Fill the section array */
if(p_pmt_decoder->ap_sections[p_section->i_number] != NULL)
{
#if 0
DMA_DVBPSI_DEBUG_ARG("PMT decoder", "overwrite section number %d",
p_section->i_number);
#endif
DMA_dvbpsi_DeletePSISections(p_pmt_decoder->ap_sections[p_section->i_number]);
}
p_pmt_decoder->ap_sections[p_section->i_number] = p_section;
/* Check if we have all the sections */
b_complete = 0;
for(i = 0; i <= p_pmt_decoder->i_last_section_number; i++)
{
if(!p_pmt_decoder->ap_sections[i])
break;
if(i == p_pmt_decoder->i_last_section_number)
b_complete = 1;
}
if(b_complete)
{
/* Save the current information */
p_pmt_decoder->current_pmt = *p_pmt_decoder->p_building_pmt;
p_pmt_decoder->b_current_valid = 1;
/* Chain the sections */
if(p_pmt_decoder->i_last_section_number)
{
for(i = 0; i <= p_pmt_decoder->i_last_section_number - 1; i++)
p_pmt_decoder->ap_sections[i]->p_next =
p_pmt_decoder->ap_sections[i + 1];
}
/* Decode the sections */
DMA_dvbpsi_DecodePMTSections(p_pmt_decoder->p_building_pmt,
p_pmt_decoder->ap_sections[0]);
/* Delete the sections */
DMA_dvbpsi_DeletePSISections(p_pmt_decoder->ap_sections[0]);
/* signal the new PMT */
p_pmt_decoder->pf_callback(p_pmt_decoder->p_cb_data,
p_pmt_decoder->p_building_pmt);
/* Reinitialize the structures */
p_pmt_decoder->p_building_pmt = NULL;
for(i = 0; i <= p_pmt_decoder->i_last_section_number; i++)
p_pmt_decoder->ap_sections[i] = NULL;
}
}
else
{
DMA_dvbpsi_DeletePSISections(p_section);
}
}
