[FFmpeg-devel] [PATCH 16/18] avradio/sdr: rename fft_p2
Michael Niedermayer
michael at niedermayer.cc
Sun Jul 9 00:25:28 EEST 2023
The FFT really is from the point of view of the stream Phase 1 not
Phase 2 of the demodulation.
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
---
libavradio/sdr.h | 4 ++--
libavradio/sdrdemux.c | 8 ++++----
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/libavradio/sdr.h b/libavradio/sdr.h
index 8a2ab1c78a..1582f70d86 100644
--- a/libavradio/sdr.h
+++ b/libavradio/sdr.h
@@ -95,10 +95,10 @@ typedef struct FIFOElement {
typedef struct SDRStream {
AVTXContext *ifft_ctx;
- AVTXContext *fft_p2_ctx;
+ AVTXContext *fft_ctx;
AVTXContext *ifft_p2_ctx;
av_tx_fn ifft;
- av_tx_fn fft_p2;
+ av_tx_fn fft;
av_tx_fn ifft_p2;
int block_size;
int block_size_p2;
diff --git a/libavradio/sdrdemux.c b/libavradio/sdrdemux.c
index b51fa4296a..1ded01e957 100644
--- a/libavradio/sdrdemux.c
+++ b/libavradio/sdrdemux.c
@@ -979,7 +979,7 @@ static int demodulate_fm(SDRContext *sdr, int stream_index, AVPacket *pkt)
//FIXME this only needs to be a RDFT
//CONSIDER, this and in fact alot can be done with bandpass and lowpass filters instead of FFTs, find out which is better
//CONSIDER synthesizing the carrier instead of IFFT, we have all parameters for that
- sst->fft_p2(sst->fft_p2_ctx, sst->block, sst->iblock, sizeof(AVComplexFloat));
+ sst->fft(sst->fft_ctx, sst->block, sst->iblock, sizeof(AVComplexFloat));
// Only the low N/2+1 are used the upper is just a reflection
carrier19_i_exact = find_am_carrier(sdr, sst->block, 2*sst->block_size, (void*)(sst->block + 1 + sst->block_size), carrier19_i, 10, 10);
@@ -1078,10 +1078,10 @@ static void free_stream(SDRContext *sdr, int stream_index)
SDRStream *sst = st->priv_data;
av_tx_uninit(&sst->ifft_ctx);
- av_tx_uninit(&sst->fft_p2_ctx);
+ av_tx_uninit(&sst->fft_ctx);
av_tx_uninit(&sst->ifft_p2_ctx);
sst->ifft = NULL;
- sst->fft_p2 = NULL;
+ sst->fft = NULL;
sst->ifft_p2 = NULL;
sst->block_size = 0;
@@ -1127,7 +1127,7 @@ static int setup_stream(SDRContext *sdr, int stream_index, Station *station)
if (sst->station->bandwidth_p2) {
//Allocate 2nd stage demodulation fields if needed
- ret = av_tx_init(&sst-> fft_p2_ctx, &sst-> fft_p2, AV_TX_FLOAT_FFT, 0, 2*sst->block_size , NULL, 0);
+ ret = av_tx_init(&sst-> fft_ctx, &sst-> fft, AV_TX_FLOAT_FFT, 0, 2*sst->block_size , NULL, 0);
if (ret < 0)
return ret;
--
2.31.1
More information about the ffmpeg-devel
mailing list