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hdhome_run_player.c
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hdhome_run_player.c
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/**
* hdhome_run_player
*
* Copyright 2015-2018 Jay Sorg <[email protected]>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <hdhomerun.h>
#include "mpeg_ts.h"
#include "hdhome_run_x11.h"
#include "hdhome_run_pa.h"
#include "list.h"
#include "hdhome_run_codec.h"
#include "hdhome_run_log.h"
#define HD_AUDIO_MSDELAY 1000
#define MSTIME_HISTORY 4000
static void* g_gui = NULL;
struct video_info
{
int started;
int this_pdu_bytes;
char* frame_data_alloc;
char* frame_data;
int frame_data_bytes;
int frame_data_pos;
struct list* frame_list;
int frame_delay;
int pad2;
void* mpeg2_handle;
};
struct audio_info
{
int started;
int this_pdu_bytes;
char* frame_data_alloc;
char* frame_data;
int frame_data_bytes;
int frame_data_pos;
void* ac3_handle;
void* pa_handle;
struct list* audio_delay_list;
};
struct program_info
{
int started;
int pad0;
char* frame_data_alloc;
char* frame_data;
int frame_data_bytes;
int frame_data_pos;
};
struct zero_info
{
int started;
int pad0;
char* frame_data_alloc;
char* frame_data;
int frame_data_bytes;
int frame_data_pos;
};
struct video_audio_info
{
struct video_info* vi;
struct audio_info* ai;
struct program_info* pi;
struct zero_info* zi;
int audio_latency;
int pad0;
int main_to_worker_video_pipe[2];
int worker_to_main_video_pipe[2];
int main_to_worker_audio_pipe[2];
pthread_mutex_t* mutex;
struct list* main_to_worker_video_list;
struct list* worker_to_main_video_list;
struct list* main_to_worker_audio_list;
int got_cdiff;
int cdiff;
int last_video_dts;
int last_audio_dts;
int main_to_worker_video_bytes;
int worker_to_main_video_bytes;
int main_to_worker_audio_bytes;
int pad1;
};
struct mlcb_info
{
struct hdhomerun_device_t* hdhr;
struct tmpegts_cb* cb;
struct video_audio_info* vai;
int term_pipe[2];
int frame_count;
int pad0;
};
struct main_to_worker_video_item
{
unsigned char* data;
int data_bytes;
int mstime_dts;
};
struct worker_to_main_video_item
{
unsigned char* data;
int data_bytes;
int format;
int width;
int height;
};
struct main_to_worker_audio_item
{
unsigned char* data;
int data_bytes;
int mstime_in;
int mstime_queued;
int mstime_dts;
};
struct average_item
{
int diff;
int mstime;
};
/*****************************************************************************/
/* returns boolean */
static int
pipe_is_set(int pipe[])
{
fd_set rfds;
struct timeval time;
int rv;
memset(&time, 0, sizeof(time));
FD_ZERO(&rfds);
FD_SET(pipe[0], &rfds);
rv = select(pipe[0] + 1, &rfds, 0, 0, &time);
if (rv == 1)
{
return 1;
}
return 0;
}
/*****************************************************************************/
static int
pipe_clear(int pipe[])
{
char buf[4];
while (pipe_is_set(pipe))
{
if (read(pipe[0], buf, 4) != 4)
{
return 1;
}
}
return 0;
}
/*****************************************************************************/
static int
pipe_set(int pipe[])
{
if (pipe_is_set(pipe))
{
return 0;
}
if (write(pipe[1], "sig", 4) != 4)
{
return 1;
}
return 0;
}
/*****************************************************************************/
static int
audio_delay_list_get_average(struct list* alist, int now, int diff)
{
int index;
int count;
int acc;
int average;
struct average_item* item;
item = (struct average_item*)calloc(sizeof(struct average_item), 1);
if (item == NULL)
{
return 0;
}
item->diff = diff;
item->mstime = now;
list_add_item(alist, (long)item);
item = (struct average_item*)list_get_item(alist, 0);
while (item != 0)
{
if (item->mstime > now - MSTIME_HISTORY)
{
break;
}
list_remove_item(alist, 0);
item = (struct average_item*)list_get_item(alist, 0);
}
acc = 0;
count = alist->count;
for (index = 0; index < count; index++)
{
item = (struct average_item*)list_get_item(alist, index);
acc += item->diff;
}
if (count > 0)
{
average = (acc + (count / 2)) / count;
}
else
{
average = acc;
}
LOGLN(10, (0, LOGF "count %d average %d", LOGP, count, average));
return average;
}
/*****************************************************************************/
static struct main_to_worker_video_item*
get_main_to_worker_video_item(struct video_audio_info* vai,
int mstime, int* wait_mstime)
{
struct main_to_worker_video_item* mtwvi;
LOGLN(10, (0, LOGF "count %d", LOGP,
vai->main_to_worker_video_list->count));
mtwvi = NULL;
pthread_mutex_lock(vai->mutex);
if (vai->main_to_worker_video_list->count > 0)
{
mtwvi = (struct main_to_worker_video_item*)
list_get_item(vai->main_to_worker_video_list, 0);
LOGLN(10, (0, LOGF "ms wait time %d", LOGP,
(int)(mtwvi->mstime_dts - mstime)));
if ((mtwvi->mstime_dts > mstime) &&
(mtwvi->mstime_dts - mstime < 10000))
{
*wait_mstime = mtwvi->mstime_dts - mstime;
pthread_mutex_unlock(vai->mutex);
return NULL;
}
list_remove_item(vai->main_to_worker_video_list, 0);
vai->main_to_worker_video_bytes -= mtwvi->data_bytes;
}
pthread_mutex_unlock(vai->mutex);
return mtwvi;
}
/*****************************************************************************/
static int
add_main_to_worker_video_item(struct video_audio_info* vai,
struct main_to_worker_video_item* mtwvi)
{
pthread_mutex_lock(vai->mutex);
if (vai->main_to_worker_video_bytes > 100 * 1024 * 1024)
{
pthread_mutex_unlock(vai->mutex);
LOGLN(10, (0, LOGF "main_to_worker_video_bytes %d", LOGP,
vai->main_to_worker_video_bytes));
return 1;
}
list_add_item(vai->main_to_worker_video_list, (long)mtwvi);
vai->main_to_worker_video_bytes += mtwvi->data_bytes;
pthread_mutex_unlock(vai->mutex);
return 0;
}
/*****************************************************************************/
static struct worker_to_main_video_item*
get_worker_to_main_video_item(struct video_audio_info* vai)
{
struct worker_to_main_video_item* wtmvi;
wtmvi = NULL;
pthread_mutex_lock(vai->mutex);
if (vai->worker_to_main_video_list->count > 0)
{
wtmvi = (struct worker_to_main_video_item*)
list_get_item(vai->worker_to_main_video_list, 0);
list_remove_item(vai->worker_to_main_video_list, 0);
vai->worker_to_main_video_bytes -= wtmvi->data_bytes;
}
pthread_mutex_unlock(vai->mutex);
return wtmvi;
}
/*****************************************************************************/
static int
add_worker_to_main_video_item(struct video_audio_info* vai,
struct worker_to_main_video_item* wtmvi)
{
pthread_mutex_lock(vai->mutex);
if (vai->worker_to_main_video_bytes > 100 * 1024 * 1024)
{
pthread_mutex_unlock(vai->mutex);
LOGLN(0, (0, LOGF "worker_to_main_video_bytes %d", LOGP,
vai->worker_to_main_video_bytes));
return 1;
}
list_add_item(vai->worker_to_main_video_list, (long)wtmvi);
vai->worker_to_main_video_bytes += wtmvi->data_bytes;
pthread_mutex_unlock(vai->mutex);
return 0;
}
/*****************************************************************************/
static struct main_to_worker_audio_item*
get_main_to_worker_audio_item(struct video_audio_info* vai)
{
struct main_to_worker_audio_item* mtwai;
mtwai = NULL;
pthread_mutex_lock(vai->mutex);
if (vai->main_to_worker_audio_list->count > 0)
{
mtwai = (struct main_to_worker_audio_item*)
list_get_item(vai->main_to_worker_audio_list, 0);
list_remove_item(vai->main_to_worker_audio_list, 0);
vai->main_to_worker_audio_bytes -= mtwai->data_bytes;
}
pthread_mutex_unlock(vai->mutex);
return mtwai;
}
/*****************************************************************************/
static int
add_main_to_worker_audio_item(struct video_audio_info* vai,
struct main_to_worker_audio_item* mtwai)
{
pthread_mutex_lock(vai->mutex);
if (vai->main_to_worker_audio_bytes > 100 * 1024 * 1024)
{
pthread_mutex_unlock(vai->mutex);
LOGLN(0, (0, LOGF "main_to_worker_audio_bytes %d", LOGP,
vai->main_to_worker_audio_bytes));
return 1;
}
list_add_item(vai->main_to_worker_audio_list, (long)mtwai);
vai->main_to_worker_audio_bytes += mtwai->data_bytes;
pthread_mutex_unlock(vai->mutex);
return 0;
}
/*****************************************************************************/
/* video thread */
static int
decode_video_and_send_back(struct video_audio_info* vai,
struct main_to_worker_video_item* mtwvi)
{
int error;
int width;
int height;
int format;
int out_data_bytes;
int cdata_bytes_processed;
int decoded;
unsigned char* out_data;
struct worker_to_main_video_item* wtmvi;
unsigned char* cdata;
int cdata_bytes;
struct video_info* vi;
cdata = mtwvi->data;
cdata_bytes = mtwvi->data_bytes;
vi = vai->vi;
while (cdata_bytes > 0)
{
error = hdhome_run_codec_video_decode(vi->mpeg2_handle,
cdata, cdata_bytes,
&cdata_bytes_processed,
&decoded);
if (error != 0)
{
LOGLN(0, (0, LOGF "error decoding %d", LOGP, error));
break;
}
cdata += cdata_bytes_processed;
cdata_bytes -= cdata_bytes_processed;
if (decoded)
{
error = hdhome_run_codec_video_get_frame_info(vi->mpeg2_handle,
&width, &height,
&format,
&out_data_bytes);
if (error == 0)
{
out_data = (unsigned char*)malloc(out_data_bytes);
if (out_data != NULL)
{
error = hdhome_run_codec_video_get_frame_data(vi->mpeg2_handle,
out_data,
out_data_bytes);
if (error == 0)
{
wtmvi = (struct worker_to_main_video_item*)
calloc(sizeof(struct worker_to_main_video_item), 1);
if (wtmvi != NULL)
{
wtmvi->data = out_data;
wtmvi->data_bytes = out_data_bytes;
wtmvi->format = format;
wtmvi->width = width;
wtmvi->height = height;
if (add_worker_to_main_video_item(vai, wtmvi) != 0)
{
free(wtmvi->data);
free(wtmvi);
}
pipe_set(vai->worker_to_main_video_pipe);
}
else
{
free(out_data);
}
}
else
{
free(out_data);
}
}
}
}
}
return 0;
}
/*****************************************************************************/
/* video thread */
static int
video_process_item(struct mlcb_info* mlcbi,
struct main_to_worker_video_item* mtwvi)
{
struct video_audio_info* vai;
vai = mlcbi->vai;
decode_video_and_send_back(vai, mtwvi);
free(mtwvi->data);
free(mtwvi);
return 0;
}
/*****************************************************************************/
/* video thread */
static void*
video_thread_proc(void* arg)
{
int cont;
fd_set rfds_set;
int max_fd;
int status;
int now;
int wait_mstime;
struct main_to_worker_video_item* mtwvi;
struct mlcb_info* mlcbi;
struct timeval time;
LOGLN(0, (0, LOGF, LOGP));
mlcbi = (struct mlcb_info*)arg;
wait_mstime = 1000;
cont = 1;
while (cont)
{
max_fd = 0;
FD_ZERO(&rfds_set);
FD_SET(mlcbi->term_pipe[0], &rfds_set);
if (mlcbi->term_pipe[0] > max_fd)
{
max_fd = mlcbi->term_pipe[0];
}
FD_SET(mlcbi->vai->main_to_worker_video_pipe[0], &rfds_set);
if (mlcbi->vai->main_to_worker_video_pipe[0] > max_fd)
{
max_fd = mlcbi->vai->main_to_worker_video_pipe[0];
}
time.tv_sec = wait_mstime / 1000;
time.tv_usec = (wait_mstime * 1000) % 1000000;
status = select(max_fd + 1, &rfds_set, NULL, NULL, &time);
if (status >= 0)
{
if (FD_ISSET(mlcbi->term_pipe[0], &rfds_set))
{
cont = 0;
break;
}
if (FD_ISSET(mlcbi->vai->main_to_worker_video_pipe[0], &rfds_set))
{
pipe_clear(mlcbi->vai->main_to_worker_video_pipe);
}
now = get_mstime();
wait_mstime = 1000;
mtwvi = get_main_to_worker_video_item(mlcbi->vai, now,
&wait_mstime);
while (mtwvi != NULL)
{
video_process_item(mlcbi, mtwvi);
now = get_mstime();
wait_mstime = 1000;
mtwvi = get_main_to_worker_video_item(mlcbi->vai, now,
&wait_mstime);
}
}
}
return 0;
}
/*****************************************************************************/
/* audio thread */
static int
decode_and_present_audio(struct video_audio_info* vai,
struct main_to_worker_audio_item* mtwai)
{
int cdata_bytes_processed;
int decoded;
int error;
int channels;
int format;
int out_data_bytes;
int diff;
int now;
int pa_flags;
void* out_data;
unsigned char* cdata;
int cdata_bytes;
struct audio_info* ai;
cdata = mtwai->data;
cdata_bytes = mtwai->data_bytes;
ai = vai->ai;
while (cdata_bytes > 0)
{
error = hdhome_run_codec_audio_decode(ai->ac3_handle,
cdata, cdata_bytes,
&cdata_bytes_processed,
&decoded);
if (error != 0)
{
LOGLN(0, (0, LOGF "error decoding %d", LOGP, error));
break;
}
cdata += cdata_bytes_processed;
cdata_bytes -= cdata_bytes_processed;
if (decoded)
{
error = hdhome_run_codec_audio_get_frame_info(ai->ac3_handle,
&channels,
&format,
&out_data_bytes);
if ((error == 0) && (out_data_bytes > 0))
{
out_data = malloc(out_data_bytes);
if (out_data != NULL)
{
error = hdhome_run_codec_audio_get_frame_data(ai->ac3_handle,
out_data,
out_data_bytes);
if (error == 0)
{
if (ai->pa_handle == NULL)
{
error = hdhome_run_pa_init("hdhome_run_player",
&(ai->pa_handle));
if (error == 0)
{
switch (channels)
{
case 1:
LOGLN(0, (0, LOGF
"starting 1 channel 48000 audio",
LOGP));
pa_flags = CAP_PA_FORMAT_48000_1CH_16LE;
break;
case 2:
LOGLN(0, (0, LOGF
"starting 2 channel 48000 audio",
LOGP));
pa_flags = CAP_PA_FORMAT_48000_2CH_16LE;
break;
default:
LOGLN(0, (0, LOGF
"starting 6 channel 48000 audio",
LOGP));
pa_flags = CAP_PA_FORMAT_48000_6CH_16LE;
break;
}
hdhome_run_pa_start(ai->pa_handle,
"hdhome_run_player",
HD_AUDIO_MSDELAY, pa_flags);
}
}
if (ai->pa_handle != NULL)
{
#if 1
hdhome_run_pa_play(ai->pa_handle,
out_data, out_data_bytes);
#else
hdhome_run_pa_play_non_blocking(ai->pa_handle,
out_data,
out_data_bytes, 0);
#endif
now = get_mstime();
mtwai->mstime_queued = now;
diff = now - mtwai->mstime_dts;
vai->audio_latency =
audio_delay_list_get_average(ai->audio_delay_list,
now, diff);
LOGLN(10, (0, LOGF "audio_latency %d diff %d",
LOGP, vai->audio_latency, diff));
}
}
free(out_data);
}
}
}
}
return 0;
}
/*****************************************************************************/
/* audio thread */
static int
audio_process_item(struct mlcb_info* mlcbi,
struct main_to_worker_audio_item* mtwai)
{
struct video_audio_info* vai;
vai = mlcbi->vai;
decode_and_present_audio(vai, mtwai);
free(mtwai->data);
free(mtwai);
return 0;
}
/*****************************************************************************/
/* audio thread */
static void*
audio_thread_proc(void* arg)
{
int cont;
fd_set rfds_set;
int max_fd;
int status;
struct main_to_worker_audio_item* mtwai;
struct mlcb_info* mlcbi;
LOGLN(0, (0, LOGF, LOGP));
mlcbi = (struct mlcb_info*)arg;
cont = 1;
while (cont)
{
max_fd = 0;
FD_ZERO(&rfds_set);
FD_SET(mlcbi->term_pipe[0], &rfds_set);
if (mlcbi->term_pipe[0] > max_fd)
{
max_fd = mlcbi->term_pipe[0];
}
FD_SET(mlcbi->vai->main_to_worker_audio_pipe[0], &rfds_set);
if (mlcbi->vai->main_to_worker_audio_pipe[0] > max_fd)
{
max_fd = mlcbi->vai->main_to_worker_audio_pipe[0];
}
status = select(max_fd + 1, &rfds_set, NULL, NULL, NULL);
if (status >= 0)
{
if (FD_ISSET(mlcbi->term_pipe[0], &rfds_set))
{
cont = 0;
break;
}
if (FD_ISSET(mlcbi->vai->main_to_worker_audio_pipe[0], &rfds_set))
{
pipe_clear(mlcbi->vai->main_to_worker_audio_pipe);
}
mtwai = get_main_to_worker_audio_item(mlcbi->vai);
while (mtwai != NULL)
{
audio_process_item(mlcbi, mtwai);
mtwai = get_main_to_worker_audio_item(mlcbi->vai);
}
}
}
return 0;
}
/*****************************************************************************/
static int
read_time(const void* ptr, int* time)
{
const unsigned char* pui8;
unsigned int t1;
pui8 = (const unsigned char*) ptr;
/* 11100000 00000000 00000000 00000000 3 bits */
/* 00011111 11100000 00000000 00000000 8 bits */
/* 00000000 00011111 11000000 00000000 7 bits */
/* 00000000 00000000 00111111 11000000 8 bits */
/* 00000000 00000000 00000000 00111111 6 bits */
t1 = ((pui8[0] & 0x0E) << 28) | ((pui8[1] & 0xFF) << 21) |
((pui8[2] & 0xFE) << 13) | ((pui8[3] & 0xFF) << 6) |
((pui8[4] & 0xFE) >> 2);
t1 = t1 / 45;
*time = t1;
return 0;
}
/*****************************************************************************/
static int
read_pts_dts(const void* ptr, int* pts, int* dts)
{
const unsigned char* pui8;
pui8 = (const unsigned char*) ptr;
if ((pui8[7] & 0xc0) == 0xc0)
{
LOGLN(10, (0, LOGF "got pts/dts", LOGP));
read_time(pui8 + 9, pts);
read_time(pui8 + 9 + 5, dts);
}
else if ((pui8[7] & 0x80) == 0x80)
{
LOGLN(10, (0, LOGF "got pts", LOGP));
read_time(pui8 + 9, pts);
*dts = *pts;
}
else
{
return 1;
}
return 0;
}
/*****************************************************************************/
static int
read_pcr(const void* ptr, int* pcr)
{
const unsigned char* pui8;
unsigned int t1;
pui8 = (const unsigned char*) ptr;
t1 = (pui8[0] << 24) | (pui8[1] << 16) | (pui8[2] << 8) | pui8[3];
t1 = t1 / 45;
*pcr = t1;
return 0;
}
/*****************************************************************************/
/* main thread */
int
tmpegts_video_cb(const void* data, int data_bytes,
const struct tmpegts* mpegts, void* udata)
{
int rv;
int remainder;
struct mlcb_info* mlcbi;
struct video_audio_info* vai;
struct video_info* vi;
unsigned char* cdata;
int cdata_bytes;
int now;
int mstime_dts;
struct main_to_worker_video_item* mtwvi;
int pts;
int dts;
int pcr;
int cdiff;
rv = 0;
mlcbi = (struct mlcb_info*)udata;
vai = mlcbi->vai;
vi = vai->vi;
if (mpegts->pcr_flag)
{
LOGLN(10, (0, LOGF "got pcr_flag", LOGP));
/* 33 bit time */
if (read_pcr(mpegts->pcr, &pcr) == 0)
{
/* get the difference between our clock and
server clock */
LOGLN(10, (0, LOGF "update clock diff", LOGP));
vai->got_cdiff = 1;
now = get_mstime();
cdiff = pcr - now;
vai->cdiff = cdiff;
LOGLN(10, (0, LOGF "update clock diff %d", LOGP, vai->cdiff));
}
}
if (mpegts->payload_unit_start_indicator)
{
LOGLN(10, (0, LOGF "start", LOGP));
//hex_dump(vi->frame_data, 64);
vi->this_pdu_bytes = 0;
/* https://en.wikipedia.org/wiki/Packetized_elementary_stream */
if ((vi->frame_data[0] == 0) && (vi->frame_data[1] == 0) &&
(vi->frame_data[2] == 1))
{
/* for video packet, this is zero */
vi->this_pdu_bytes = (vi->frame_data[4] << 8) | vi->frame_data[5];
vi->this_pdu_bytes += 6;
}
if (vi->frame_data_pos > 0)
{
//hex_dump(vi->frame_data, 128);
now = get_mstime();
if (vai->got_cdiff == 0)
{
mstime_dts = now;
}
else if (read_pts_dts(vi->frame_data, &pts, &dts) == 0)
{
LOGLN(10, (0, LOGF "pts %d dts %d", LOGP, pts, dts));
vai->last_video_dts = dts;
mstime_dts = dts - vai->cdiff;
}
else
{
LOGLN(0, (0, LOGF "read_pts_dts failed", LOGP));
mstime_dts = now;
}
LOGLN(10, (0, LOGF "now - mstime_dts = %d", LOGP, now - mstime_dts));
/* https://en.wikipedia.org/wiki/Packetized_elementary_stream */
remainder = (unsigned char)(vi->frame_data[8]);
cdata = (unsigned char*)(vi->frame_data + (9 + remainder));
cdata_bytes = vi->frame_data_pos - (9 + remainder);
LOGLN(10, (0, LOGF "cdata_bytes %d", LOGP, cdata_bytes));
mtwvi = (struct main_to_worker_video_item*)
calloc(sizeof(struct main_to_worker_video_item), 1);
if (mtwvi != NULL)
{
mtwvi->data = (unsigned char*)malloc(cdata_bytes);
if (mtwvi->data != NULL)
{
memcpy(mtwvi->data, cdata, cdata_bytes);
mtwvi->data_bytes = cdata_bytes;
LOGLN(10, (0, LOGF "audio_latency %d", LOGP,
vai->audio_latency));
mtwvi->mstime_dts = mstime_dts + vai->audio_latency +
HD_AUDIO_MSDELAY - 750;
if (add_main_to_worker_video_item(vai, mtwvi) != 0)
{
free(mtwvi->data);
free(mtwvi);
}
pipe_set(vai->main_to_worker_video_pipe);
}
else
{
free(mtwvi);
}
}
}
vi->frame_data_pos = 0;
vi->started = 1;
}
if (mpegts->payload_flag && vi->started)
{
memcpy(vi->frame_data + vi->frame_data_pos, data, data_bytes);
vi->frame_data_pos += data_bytes;
LOGLN(10, (0, LOGF "vi->frame_data_pos %d vi->this_pdu_bytes %d",
LOGP, vi->frame_data_pos, vi->this_pdu_bytes));
}
return rv;
}
/*****************************************************************************/
/* main thread */
int
tmpegts_audio_cb(const void* data, int data_bytes,
const struct tmpegts* mpegts, void* udata)
{
int rv;
int remainder;
struct mlcb_info* mlcbi;
struct video_audio_info* vai;
struct audio_info* ai;
unsigned char* cdata;
int cdata_bytes;
struct main_to_worker_audio_item* mtwai;
int pts;
int dts;
rv = 0;
mlcbi = (struct mlcb_info*)udata;
vai = mlcbi->vai;
ai = vai->ai;
if (mpegts->payload_unit_start_indicator)
{
LOGLN(10, (0, LOGF "start", LOGP));
ai->this_pdu_bytes = 0;
/* https://en.wikipedia.org/wiki/Packetized_elementary_stream */
if ((ai->frame_data[0] == 0) && (ai->frame_data[1] == 0) &&
(ai->frame_data[2] == 1))
{
ai->this_pdu_bytes = (ai->frame_data[4] << 8) | ai->frame_data[5];
ai->this_pdu_bytes += 6;
}
ai->frame_data_pos = 0;
ai->started = 1;
}
if (mpegts->payload_flag && ai->started)
{
memcpy(ai->frame_data + ai->frame_data_pos, data, data_bytes);
ai->frame_data_pos += data_bytes;
if ((ai->this_pdu_bytes > 6) &&
(ai->frame_data_pos >= ai->this_pdu_bytes))
{
if (read_pts_dts(ai->frame_data, &pts, &dts) == 0)
{
LOGLN(10, (0, LOGF "pts %d dts %d", LOGP, pts, dts));
vai->last_audio_dts = dts;
}
else
{
LOGLN(0, (0, LOGF, "read_pts_dts failed", LOGP));
}
/* https://en.wikipedia.org/wiki/Packetized_elementary_stream */
remainder = (unsigned char)(ai->frame_data[8]);
cdata = (unsigned char*)(ai->frame_data + (9 + remainder));
cdata_bytes = ai->frame_data_pos - (9 + remainder);
mtwai = (struct main_to_worker_audio_item*)
calloc(sizeof(struct main_to_worker_audio_item), 1);
if (mtwai != NULL)
{
mtwai->data = (unsigned char *)malloc(cdata_bytes);
if (mtwai->data != NULL)
{
memcpy(mtwai->data, cdata, cdata_bytes);
mtwai->data_bytes = cdata_bytes;
mtwai->mstime_in = get_mstime();
mtwai->mstime_dts = vai->last_audio_dts - vai->cdiff;
if (add_main_to_worker_audio_item(vai, mtwai) != 0)
{
free(mtwai->data);
free(mtwai);
}
pipe_set(vai->main_to_worker_audio_pipe);
}
else
{
free(mtwai);
}
}
}
}
return rv;
}
/*****************************************************************************/
/* main thread */
static int
tmpegts_program_cb(const void* data, int data_bytes,
const struct tmpegts* mpegts, void* udata)
{
struct mlcb_info* mlcbi;
struct video_audio_info* vai;
struct program_info* pi;
LOGLN(10, (0, LOGF "data_bytes %d", LOGP, data_bytes));
mlcbi = (struct mlcb_info*)udata;
vai = mlcbi->vai;
pi = vai->pi;
if (mpegts->payload_unit_start_indicator)
{
pi->frame_data_pos = 0;
pi->started = 1;
}
if (mpegts->payload_flag && pi->started)