RetCode decoder_init()
{
// Set default values of gdd and pdd when necessary
memset(&pdd, 0, sizeof(pdd));
// memset(&gdd, 0, sizeof(gdd));
static slice_header_t dummy_sh; // a all 0-filled structure that will prevent from testing if prev_sh pointer is non null each time it is accessed !
pdd.max_num_of_slices = 1;
pdd.decoding_finished = 0;
memset(&dummy_sh, 0, sizeof(dummy_sh)); // all 0 should make a good "before-first" slice
pdd.prev_sh = &dummy_sh; // needed so that there is no need to test if the pointer is non null
// Init CABAC tables
cabac_init_data();
init_dpb();
return RET_SUCCESS;
}
/*!
************************************************************************
* \brief
* Interpret the Buffering period SEI message
* \param payload
* a pointer that point to the sei payload
* \param size
* the size of the sei message
* \param img
* the image pointer
*
************************************************************************
*/
void interpret_buffering_period_info( byte* payload, int size, ImageParameters *img )
{
int seq_parameter_set_id, initial_cpb_removal_delay, initial_cpb_removal_delay_offset;
unsigned int k;
Bitstream* buf;
seq_parameter_set_rbsp_t *sps;
#ifdef ESLCPP
buf = (Bitstream*)malloc(sizeof(Bitstream));
#else
buf = malloc(sizeof(Bitstream));
#endif
buf->bitstream_length = size;
buf->streamBuffer = payload;
buf->frame_bitoffset = 0;
UsedBits = 0;
seq_parameter_set_id = ue_v("SEI: seq_parameter_set_id" , buf);
sps = &SeqParSet[seq_parameter_set_id];
if (active_sps != sps)
{
active_sps = sps;
init_dpb();
}
#ifdef PRINT_BUFFERING_PERIOD_INFO
printf("Buffering period SEI message\n");
printf("seq_parameter_set_id = %d\n", seq_parameter_set_id);
#endif
if (sps->vui_seq_parameters.nal_hrd_parameters_present_flag)
{
for (k=0; k<sps->vui_seq_parameters.nal_hrd_parameters.cpb_cnt; k++)
{
initial_cpb_removal_delay = u_v(sps->vui_seq_parameters.nal_hrd_parameters.cpb_removal_delay_length_minus1+1,
"SEI: initial_cpb_removal_delay" , buf);
initial_cpb_removal_delay_offset = u_v(sps->vui_seq_parameters.nal_hrd_parameters.cpb_removal_delay_length_minus1+1,
"SEI: initial_cpb_removal_delay_offset" , buf);
#ifdef PRINT_BUFFERING_PERIOD_INFO
printf("nal initial_cpb_removal_delay[%d] = %d\n", k, initial_cpb_removal_delay);
printf("nal initial_cpb_removal_delay_offset[%d] = %d\n", k, initial_cpb_removal_delay_offset);
#endif
}
}
if (sps->vui_seq_parameters.vcl_hrd_parameters_present_flag)
{
for (k=0; k<sps->vui_seq_parameters.vcl_hrd_parameters.cpb_cnt; k++)
{
initial_cpb_removal_delay = u_v(sps->vui_seq_parameters.vcl_hrd_parameters.cpb_removal_delay_length_minus1+1,
"SEI: initial_cpb_removal_delay" , buf);
initial_cpb_removal_delay_offset = u_v(sps->vui_seq_parameters.vcl_hrd_parameters.cpb_removal_delay_length_minus1+1,
"SEI: initial_cpb_removal_delay_offset" , buf);
#ifdef PRINT_BUFFERING_PERIOD_INFO
printf("vcl initial_cpb_removal_delay[%d] = %d\n", k, initial_cpb_removal_delay);
printf("vcl initial_cpb_removal_delay_offset[%d] = %d\n", k, initial_cpb_removal_delay_offset);
#endif
}
}
free (buf);
#ifdef PRINT_BUFFERING_PERIOD_INFO
#undef PRINT_BUFFERING_PERIOD_INFO
#endif
}