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lavd/jack: switch to the new FIFO API

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Anton Khirnov 2022-01-06 17:16:47 +01:00 committed by Andreas Rheinhardt
parent 36117968ad
commit d46fd9640f
1 changed files with 15 additions and 15 deletions
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30
libavdevice/jack.c
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@ -50,8 +50,8 @@ typedef struct JackData {
jack_port_t ** ports;
int nports;
TimeFilter * timefilter;
AVFifoBuffer * new_pkts;
AVFifoBuffer * filled_pkts;
AVFifo * new_pkts;
AVFifo * filled_pkts;
int pkt_xrun;
int jack_xrun;
} JackData;
@ -81,13 +81,14 @@ static int process_callback(jack_nframes_t nframes, void *arg)
self->buffer_size);
/* Check if an empty packet is available, and if there's enough space to send it back once filled */
if ((av_fifo_size(self->new_pkts) < sizeof(pkt)) || (av_fifo_space(self->filled_pkts) < sizeof(pkt))) {
if (!av_fifo_can_read(self->new_pkts) ||
!av_fifo_can_write(self->filled_pkts)) {
self->pkt_xrun = 1;
return 0;
}
/* Retrieve empty (but allocated) packet */
av_fifo_generic_read(self->new_pkts, &pkt, sizeof(pkt), NULL);
av_fifo_read(self->new_pkts, &pkt, 1);
pkt_data = (float *) pkt.data;
latency = 0;
@ -106,7 +107,7 @@ static int process_callback(jack_nframes_t nframes, void *arg)
pkt.pts = (cycle_time - (double) latency / (self->nports * self->sample_rate)) * 1000000.0;
/* Send the now filled packet back, and increase packet counter */
av_fifo_generic_write(self->filled_pkts, &pkt, sizeof(pkt), NULL);
av_fifo_write(self->filled_pkts, &pkt, 1);
sem_post(&self->packet_count);
return 0;
@ -134,12 +135,12 @@ static int supply_new_packets(JackData *self, AVFormatContext *context)
/* Supply the process callback with new empty packets, by filling the new
* packets FIFO buffer with as many packets as possible. process_callback()
* can't do this by itself, because it can't allocate memory in realtime. */
while (av_fifo_space(self->new_pkts) >= sizeof(pkt)) {
while (av_fifo_can_write(self->new_pkts)) {
if ((test = av_new_packet(&pkt, pkt_size)) < 0) {
av_log(context, AV_LOG_ERROR, "Could not create packet of size %d\n", pkt_size);
return test;
}
av_fifo_generic_write(self->new_pkts, &pkt, sizeof(pkt), NULL);
av_fifo_write(self->new_pkts, &pkt, 1);
}
return 0;
}
@ -193,9 +194,9 @@ static int start_jack(AVFormatContext *context)
}
/* Create FIFO buffers */
self->filled_pkts = av_fifo_alloc_array(FIFO_PACKETS_NUM, sizeof(AVPacket));
self->filled_pkts = av_fifo_alloc2(FIFO_PACKETS_NUM, sizeof(AVPacket), 0);
/* New packets FIFO with one extra packet for safety against underruns */
self->new_pkts = av_fifo_alloc_array((FIFO_PACKETS_NUM + 1), sizeof(AVPacket));
self->new_pkts = av_fifo_alloc2((FIFO_PACKETS_NUM + 1), sizeof(AVPacket), 0);
if (!self->new_pkts) {
jack_client_close(self->client);
return AVERROR(ENOMEM);
@ -209,14 +210,13 @@ static int start_jack(AVFormatContext *context)
}
static void free_pkt_fifo(AVFifoBuffer **fifo)
static void free_pkt_fifo(AVFifo **fifop)
{
AVFifo *fifo = *fifop;
AVPacket pkt;
while (av_fifo_size(*fifo)) {
av_fifo_generic_read(*fifo, &pkt, sizeof(pkt), NULL);
while (av_fifo_read(fifo, &pkt, 1) >= 0)
av_packet_unref(&pkt);
}
av_fifo_freep(fifo);
av_fifo_freep2(fifop);
}
static void stop_jack(JackData *self)
@ -313,7 +313,7 @@ static int audio_read_packet(AVFormatContext *context, AVPacket *pkt)
}
/* Retrieve the packet filled with audio data by process_callback() */
av_fifo_generic_read(self->filled_pkts, pkt, sizeof(*pkt), NULL);
av_fifo_read(self->filled_pkts, pkt, 1);
if ((test = supply_new_packets(self, context)))
return test;