diff options
Diffstat (limited to 'host/lib/transport')
| -rw-r--r-- | host/lib/transport/vrt_packet_handler.hpp | 47 |
1 files changed, 25 insertions, 22 deletions
diff --git a/host/lib/transport/vrt_packet_handler.hpp b/host/lib/transport/vrt_packet_handler.hpp index 2e005b87a..02f65000f 100644 --- a/host/lib/transport/vrt_packet_handler.hpp +++ b/host/lib/transport/vrt_packet_handler.hpp @@ -67,13 +67,17 @@ template <typename T> UHD_INLINE T get_context_code( std::vector<const boost::uint8_t *> copy_buffs; size_t size_of_copy_buffs; size_t fragment_offset_in_samps; + std::vector<void *> io_buffs; + uhd::convert::input_type otw_buffs; recv_state(size_t width = 1): width(width), managed_buffs(width), copy_buffs(width, NULL), size_of_copy_buffs(0), - fragment_offset_in_samps(0) + fragment_offset_in_samps(0), + io_buffs(0), //resized later + otw_buffs(1) //always 1 for now { /* NOP */ } @@ -192,17 +196,17 @@ template <typename T> UHD_INLINE T get_context_code( size_t bytes_to_copy = nsamps_to_copy*bytes_per_item; size_t nsamps_to_copy_per_io_buff = nsamps_to_copy/chans_per_otw_buff; - std::vector<void *> io_buffs(chans_per_otw_buff); + state.io_buffs.resize(chans_per_otw_buff); for (size_t i = 0; i < state.width; i+=chans_per_otw_buff){ //fill a vector with pointers to the io buffers for (size_t j = 0; j < chans_per_otw_buff; j++){ - io_buffs[j] = reinterpret_cast<boost::uint8_t *>(buffs[i+j]) + offset_bytes; + state.io_buffs[j] = reinterpret_cast<boost::uint8_t *>(buffs[i+j]) + offset_bytes; } //copy-convert the samples from the recv buffer - uhd::convert::input_type otw_buffs(1, state.copy_buffs[i]); - converter(otw_buffs, io_buffs, nsamps_to_copy_per_io_buff); + state.otw_buffs[0] = state.copy_buffs[i]; + converter(state.otw_buffs, state.io_buffs, nsamps_to_copy_per_io_buff); //update the rx copy buffer to reflect the bytes copied state.copy_buffs[i] += bytes_to_copy; @@ -300,12 +304,19 @@ template <typename T> UHD_INLINE T get_context_code( struct send_state{ //init the expected seq number size_t next_packet_seq; - managed_send_buffs_t managed_buffs; + const boost::uint64_t zeros; + std::vector<const void *> zero_buffs; + std::vector<const void *> io_buffs; + uhd::convert::output_type otw_buffs; send_state(size_t width = 1): next_packet_seq(0), - managed_buffs(width) + managed_buffs(width), + zeros(0), + zero_buffs(width, &zeros), + io_buffs(0), //resized later + otw_buffs(1) //always 1 for now { /* NOP */ } @@ -334,11 +345,11 @@ template <typename T> UHD_INLINE T get_context_code( //get send buffers for each otw channel if (not get_send_buffs(state.managed_buffs)) return 0; - std::vector<const void *> io_buffs(chans_per_otw_buff); + state.io_buffs.resize(chans_per_otw_buff); for (size_t i = 0; i < buffs.size(); i+=chans_per_otw_buff){ //calculate pointers with offsets to io and otw memory for (size_t j = 0; j < chans_per_otw_buff; j++){ - io_buffs[j] = reinterpret_cast<const boost::uint8_t *>(buffs[i+j]) + offset_bytes; + state.io_buffs[j] = reinterpret_cast<const boost::uint8_t *>(buffs[i+j]) + offset_bytes; } boost::uint32_t *otw_mem = state.managed_buffs[i]->cast<boost::uint32_t *>() + vrt_header_offset_words32; @@ -347,8 +358,8 @@ template <typename T> UHD_INLINE T get_context_code( otw_mem += if_packet_info.num_header_words32; //copy-convert the samples into the send buffer - uhd::convert::output_type otw_buffs(1, otw_mem); - converter(io_buffs, otw_buffs, num_samps); + state.otw_buffs[0] = otw_mem; + converter(state.io_buffs, state.otw_buffs, num_samps); //commit the samples to the zero-copy interface size_t num_bytes_total = (vrt_header_offset_words32+if_packet_info.num_packet_words32)*sizeof(boost::uint32_t); @@ -402,19 +413,11 @@ template <typename T> UHD_INLINE T get_context_code( if_packet_info.sob = metadata.start_of_burst; if_packet_info.eob = metadata.end_of_burst; - //TODO remove this code when sample counts of zero are supported by hardware - std::vector<const void *> buffs_(buffs); - size_t total_num_samps_(total_num_samps); - if (total_num_samps == 0){ - static const boost::uint64_t zeros = 0; //max size of a host sample - buffs_ = std::vector<const void *>(buffs.size(), &zeros); - total_num_samps_ = 1; - } - return _send1( state, - buffs_, 0, - std::min(total_num_samps_, max_samples_per_packet), + //TODO remove this code when sample counts of zero are supported by hardware + (total_num_samps)?buffs : state.zero_buffs, 0, + std::max<size_t>(1, std::min(total_num_samps, max_samples_per_packet)), if_packet_info, converter, vrt_packer, |