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libdvbpsi
Commit 9d700f4e authored by Jean-Paul Saman's avatar Jean-Paul Saman
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ATSC EIT: refactor dvbpsi_atsc_GatherEITSections.

parent c0cc2545
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Showing with 148 additions and 90 deletions
src/tables/atsc_eit.c
View file @ 9d700f4e
......@@ -189,7 +189,7 @@ void dvbpsi_atsc_InitEIT(dvbpsi_atsc_eit_t* p_eit, uint8_t i_version, uint8_t i_
p_eit->i_protocol = i_protocol;
p_eit->i_source_id = i_source_id;
p_eit->p_first_event = NULL;
// FIXME: p_eit->p_first_descriptor = NULL;
p_eit->p_first_descriptor = NULL;
}
dvbpsi_atsc_eit_t *dvbpsi_atsc_NewEIT(uint8_t i_version, uint8_t i_protocol,
......@@ -219,6 +219,9 @@ void dvbpsi_atsc_EmptyEIT(dvbpsi_atsc_eit_t* p_eit)
p_event = p_tmp;
}
p_eit->p_first_event = NULL;
dvbpsi_DeleteDescriptors(p_eit->p_first_descriptor);
p_eit->p_first_descriptor = NULL;
}
void dvbpsi_atsc_DeleteEIT(dvbpsi_atsc_eit_t *p_eit)
......@@ -285,7 +288,6 @@ static dvbpsi_descriptor_t *dvbpsi_atsc_EITChannelAddDescriptor(
{
dvbpsi_descriptor_t * p_descriptor
= dvbpsi_NewDescriptor(i_tag, i_length, p_data);
if(p_descriptor)
{
if(p_event->p_first_descriptor == NULL)
......@@ -304,6 +306,120 @@ static dvbpsi_descriptor_t *dvbpsi_atsc_EITChannelAddDescriptor(
return p_descriptor;
}
/*****************************************************************************
* dvbpsi_ReInitEIT *
*****************************************************************************/
static void dvbpsi_ReInitEIT(dvbpsi_atsc_eit_decoder_t *p_decoder, const bool b_force)
{
assert(p_decoder);
/* Force redecoding */
if (b_force)
{
p_decoder->b_current_valid = false;
/* Free structures */
if (p_decoder->p_building_eit)
dvbpsi_atsc_DeleteEIT(p_decoder->p_building_eit);
}
p_decoder->p_building_eit = NULL;
/* Clear the section array */
for (unsigned int i = 0; i <= 255; i++)
{
if (p_decoder->ap_sections[i] != NULL)
{
dvbpsi_DeletePSISections(p_decoder->ap_sections[i]);
p_decoder->ap_sections[i] = NULL;
}
}
}
static bool dvbpsi_CheckEIT(dvbpsi_t *p_dvbpsi, dvbpsi_atsc_eit_decoder_t *p_decoder,
dvbpsi_psi_section_t *p_section)
{
bool b_reinit = false;
assert(p_dvbpsi);
assert(p_decoder);
if (p_decoder->p_building_eit->i_source_id != p_section->i_extension)
{
/* transport_stream_id */
dvbpsi_error(p_dvbpsi, "ATSC EIT decoder",
"'transport_stream_id' differs"
" whereas no TS discontinuity has occured");
b_reinit = true;
}
else if (p_decoder->p_building_eit->i_version != p_section->i_version)
{
/* version_number */
dvbpsi_error(p_dvbpsi, "ATSC EIT decoder",
"'version_number' differs"
" whereas no discontinuity has occured");
b_reinit = true;
}
else if (p_decoder->i_last_section_number != p_section->i_last_number)
{
/* last_section_number */
dvbpsi_error(p_dvbpsi, "ATSC EIT decoder",
"'last_section_number' differs"
" whereas no discontinuity has occured");
b_reinit = true;
}
return b_reinit;
}
static bool dvbpsi_AddSectionEIT(dvbpsi_t *p_dvbpsi, dvbpsi_atsc_eit_decoder_t *p_decoder,
dvbpsi_psi_section_t* p_section)
{
assert(p_dvbpsi);
assert(p_decoder);
assert(p_section);
/* Initialize the structures if it's the first section received */
if (!p_decoder->p_building_eit)
{
p_decoder->p_building_eit = dvbpsi_atsc_NewEIT(p_section->i_version,
p_section->p_payload_start[0],
p_section->i_extension,
p_section->b_current_next);
if (p_decoder->p_building_eit)
return false;
p_decoder->i_last_section_number = p_section->i_last_number;
}
/* Fill the section array */
if (p_decoder->ap_sections[p_section->i_number] != NULL)
{
dvbpsi_debug(p_dvbpsi, "ATSC EIT decoder", "overwrite section number %d",
p_section->i_number);
dvbpsi_DeletePSISections(p_decoder->ap_sections[p_section->i_number]);
}
p_decoder->ap_sections[p_section->i_number] = p_section;
return true;
}
static bool dvbpsi_IsCompleteEIT(dvbpsi_atsc_eit_decoder_t *p_decoder)
{
assert(p_decoder);
bool b_complete = false;
for (unsigned int i = 0; i <= p_decoder->i_last_section_number; i++)
{
if (!p_decoder->ap_sections[i])
break;
if (i == p_decoder->i_last_section_number)
b_complete = true;
}
return b_complete;
}
/*****************************************************************************
* dvbpsi_atsc_GatherEITSections
*****************************************************************************
......@@ -324,7 +440,7 @@ static void dvbpsi_atsc_GatherEITSections(dvbpsi_t * p_dvbpsi,
/* We have a valid EIT section */
dvbpsi_demux_t *p_demux = (dvbpsi_demux_t *) p_dvbpsi->p_private;
dvbpsi_atsc_eit_decoder_t * p_eit_decoder = (dvbpsi_atsc_eit_decoder_t*)p_decoder;
dvbpsi_atsc_eit_decoder_t *p_eit_decoder = (dvbpsi_atsc_eit_decoder_t*)p_decoder;
if (!p_eit_decoder)
{
dvbpsi_error(p_dvbpsi, "ATSC EIT decoder", "No decoder specified");
......@@ -332,46 +448,36 @@ static void dvbpsi_atsc_GatherEITSections(dvbpsi_t * p_dvbpsi,
return;
}
bool b_reinit = false;
/* TS discontinuity check */
if (p_demux->b_discontinuity)
{
b_reinit = true;
p_demux->b_discontinuity = true;
dvbpsi_ReInitEIT(p_eit_decoder, true);
p_eit_decoder->b_discontinuity = false;
p_demux->b_discontinuity = false;
}
else
{
/* Perform a few sanity checks */
if (p_eit_decoder->p_building_eit)
{
if (p_eit_decoder->p_building_eit->i_source_id != p_section->i_extension)
{
/* transport_stream_id */
dvbpsi_error(p_dvbpsi, "EIT decoder",
"'transport_stream_id' differs"
" whereas no TS discontinuity has occured");
b_reinit = true;
}
else if (p_eit_decoder->p_building_eit->i_version != p_section->i_version)
{
/* version_number */
dvbpsi_error(p_dvbpsi, "ATSC EIT decoder",
"'version_number' differs"
" whereas no discontinuity has occured");
b_reinit = true;
}
else if (p_eit_decoder->i_last_section_number != p_section->i_last_number)
{
/* last_section_number */
dvbpsi_error(p_dvbpsi, "ATSC EIT decoder",
"'last_section_number' differs"
" whereas no discontinuity has occured");
b_reinit = true;
}
if (dvbpsi_CheckEIT(p_dvbpsi, p_eit_decoder, p_section))
dvbpsi_ReInitEIT(p_eit_decoder, true);
}
else
{
if ( (p_eit_decoder->b_current_valid)
&& (p_eit_decoder->current_eit.i_version == p_section->i_version)
&& (p_eit_decoder->current_eit.b_current_next ==
p_section->b_current_next))
{
/* Don't decode since this version is already decoded */
dvbpsi_debug(p_dvbpsi, "ATSC EIT decoder",
"ignoring already decoded section %d",
p_section->i_number);
dvbpsi_DeletePSISections(p_section);
return;
}
#if 0
if ((p_eit_decoder->b_current_valid) &&
(p_eit_decoder->current_eit.i_version == p_section->i_version))
{
......@@ -392,71 +498,24 @@ static void dvbpsi_atsc_GatherEITSections(dvbpsi_t * p_dvbpsi,
}
dvbpsi_DeletePSISections(p_section);
return;
#endif
}
}
/* Reinit the decoder if wanted */
if (b_reinit)
{
/* Force redecoding */
p_eit_decoder->b_current_valid = false;
/* Free structures */
if (p_eit_decoder->p_building_eit)
{
dvbpsi_atsc_DeleteEIT(p_eit_decoder->p_building_eit);
p_eit_decoder->p_building_eit = NULL;
}
/* Clear the section array */
for (unsigned int i = 0; i <= 255; i++)
{
if (p_eit_decoder->ap_sections[i] != NULL)
{
dvbpsi_DeletePSISections(p_eit_decoder->ap_sections[i]);
p_eit_decoder->ap_sections[i] = NULL;
}
}
}
/* Append the section to the list if wanted */
bool b_complete = false;
/* Initialize the structures if it's the first section received */
if (!p_eit_decoder->p_building_eit)
{
p_eit_decoder->p_building_eit = dvbpsi_atsc_NewEIT(
p_section->i_version,
p_section->p_payload_start[0],
p_section->i_extension,
p_section->b_current_next);
if (p_eit_decoder->p_building_eit)
p_eit_decoder->i_last_section_number = p_section->i_last_number;
else
dvbpsi_error(p_dvbpsi, "ATSC EIT decoder",
"failed decoding ATSC EIT section");
}
/* Fill the section array */
if (p_eit_decoder->ap_sections[p_section->i_number] != NULL)
/* Add section to EIT */
if (!dvbpsi_AddSectionEIT(p_dvbpsi, p_eit_decoder, p_section))
{
dvbpsi_debug(p_dvbpsi, "ATSC EIT decoder", "overwrite section number %d",
p_section->i_number);
dvbpsi_DeletePSISections(p_eit_decoder->ap_sections[p_section->i_number]);
dvbpsi_error(p_dvbpsi, "ATSC EIT decoder", "failed decoding section %d",
p_section->i_number);
dvbpsi_DeletePSISections(p_section);
return;
}
p_eit_decoder->ap_sections[p_section->i_number] = p_section;
/* Check if we have all the sections */
b_complete = false;
for (unsigned int i = 0; i <= p_eit_decoder->i_last_section_number; i++)
if (dvbpsi_IsCompleteEIT(p_eit_decoder))
{
if (!p_eit_decoder->ap_sections[i])
break;
if (i == p_eit_decoder->i_last_section_number)
b_complete = true;
}
assert(p_eit_decoder->pf_eit_callback);
if (b_complete)
{
/* Save the current information */
p_eit_decoder->current_eit = *p_eit_decoder->p_building_eit;
p_eit_decoder->b_current_valid = true;
......@@ -476,9 +535,7 @@ static void dvbpsi_atsc_GatherEITSections(dvbpsi_t * p_dvbpsi,
p_eit_decoder->pf_eit_callback(p_eit_decoder->p_cb_data,
p_eit_decoder->p_building_eit);
/* Reinitialize the structures */
p_eit_decoder->p_building_eit = NULL;
for (unsigned int i = 0; i <= p_eit_decoder->i_last_section_number; i++)
p_eit_decoder->ap_sections[i] = NULL;
dvbpsi_ReInitEIT(p_eit_decoder, false);
}
}
......
src/tables/atsc_eit.h
View file @ 9d700f4e
......@@ -77,6 +77,7 @@ typedef struct dvbpsi_atsc_eit_s
dvbpsi_atsc_eit_event_t *p_first_event; /*!< First event information structure. */
dvbpsi_descriptor_t *p_first_descriptor; /*!< First descriptor structure. */
} dvbpsi_atsc_eit_t;
/*****************************************************************************
......
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