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libeplayer3: modify fast-backward

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This commit is contained in:
martii
2013-11-17 15:24:33 +01:00
parent 8f0f5dd29a
commit ea558898b9
3 changed files with 47 additions and 124 deletions
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142
libeplayer3/container/container_ffmpeg.c
View File

@@ -25,6 +25,7 @@
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <stdint.h>
#include <sys/ioctl.h> #include <sys/ioctl.h>
#include <fcntl.h> #include <fcntl.h>
#include <unistd.h> #include <unistd.h>
@@ -111,7 +112,7 @@ static long long int latestPts = 0;
static int restart_audio_resampling = 0; static int restart_audio_resampling = 0;
static off_t seek_target_bytes = 0; static off_t seek_target_bytes = 0;
static int do_seek_target_bytes = 0; static int do_seek_target_bytes = 0;
static float seek_target_seconds = 0.0; static int64_t seek_target_seconds = 0.0;
static int do_seek_target_seconds = 0; static int do_seek_target_seconds = 0;
static int seek_target_flag = 0; static int seek_target_flag = 0;
@@ -120,7 +121,6 @@ static int seek_target_flag = 0;
/* ***************************** */ /* ***************************** */
static int container_ffmpeg_seek_bytes(off_t pos); static int container_ffmpeg_seek_bytes(off_t pos);
static int container_ffmpeg_seek(Context_t *context, float sec, int absolute); static int container_ffmpeg_seek(Context_t *context, float sec, int absolute);
static int container_ffmpeg_seek_rel(Context_t *context, off_t pos, long long int pts, float sec);
/* ***************************** */ /* ***************************** */
/* MISC Functions */ /* MISC Functions */
@@ -328,9 +328,7 @@ static void FFMPEGThread(Context_t *context) {
strncpy(threadname, __func__, sizeof(threadname)); strncpy(threadname, __func__, sizeof(threadname));
threadname[16] = 0; threadname[16] = 0;
prctl (PR_SET_NAME, (unsigned long)&threadname); prctl (PR_SET_NAME, (unsigned long)&threadname);
off_t lastSeek = -1; int64_t lastPts = -1, currentVideoPts = -1, currentAudioPts = -1, showtime = 0, bofcount = 0;
long long int lastPts = -1, currentVideoPts = -1, currentAudioPts = -1, showtime = 0, bofcount = 0;
int err = 0;
AudioVideoOut_t avOut; AudioVideoOut_t avOut;
SwrContext *swr = NULL; SwrContext *swr = NULL;
@@ -383,32 +381,36 @@ static void FFMPEGThread(Context_t *context) {
continue; continue;
} }
if(lastPts == -1) if (lastPts < 0)
{ lastPts = (currentVideoPts > 0) ? currentVideoPts : currentAudioPts;
if(currentVideoPts != -1)
lastPts = currentVideoPts;
else
lastPts = currentAudioPts;
}
if((err = container_ffmpeg_seek_rel(context, lastSeek, lastPts, (float) context->playback->Speed)) < 0) if (lastPts > 0) {
{ do_seek_target_seconds = 1;
ffmpeg_err( "Error seeking\n"); do_seek_target_bytes = 0;
lastPts += context->playback->Speed * 8 * AV_TIME_BASE;
if (err == cERR_CONTAINER_FFMPEG_END_OF_FILE) seek_target_seconds = lastPts;
{ seek_target_flag = 0;
bofcount = 1; showtime = av_gettime() + 300000; //jump back every 300ms
}
} }
} else {
bofcount = 0;
if (!context->playback->BackWard)
lastPts = -1;
} }
if (do_seek_target_seconds || do_seek_target_bytes) { if (do_seek_target_seconds || do_seek_target_bytes) {
int res;
if (do_seek_target_seconds) { if (do_seek_target_seconds) {
float seek_target_seconds_min = seek_target_seconds - 15 * AV_TIME_BASE; int64_t seek_target_seconds_min = seek_target_seconds - 15 * AV_TIME_BASE;
if (seek_target_seconds < 0)
avformat_seek_file(avContext, -1, seek_target_seconds_min, seek_target_seconds, INT64_MAX, seek_target_flag); seek_target_seconds = 0;
if (seek_target_seconds_min < 0)
seek_target_seconds_min = 0;
res = avformat_seek_file(avContext, -1, seek_target_seconds_min, seek_target_seconds, INT64_MAX, seek_target_flag);
} else } else
container_ffmpeg_seek_bytes(seek_target_bytes); res = container_ffmpeg_seek_bytes(seek_target_bytes);
if (res < 0 && context->playback->BackWard)
bofcount = 1;
do_seek_target_seconds = do_seek_target_bytes = 0; do_seek_target_seconds = do_seek_target_bytes = 0;
restart_audio_resampling = 1; restart_audio_resampling = 1;
latestPts = 0; latestPts = 0;
@@ -419,12 +421,7 @@ static void FFMPEGThread(Context_t *context) {
for (i = 0; i < avContext->nb_streams; i++) for (i = 0; i < avContext->nb_streams; i++)
if (avContext->streams[i]->codec && avContext->streams[i]->codec->codec) if (avContext->streams[i]->codec && avContext->streams[i]->codec->codec)
avcodec_flush_buffers(avContext->streams[i]->codec); avcodec_flush_buffers(avContext->streams[i]->codec);
}
if (context->playback->BackWard) {
lastPts = lastPts + (context->playback->Speed * 90000);
showtime = av_gettime() + 300000; //jump back all 300ms
context->output->Command(context, OUTPUT_AUDIOMUTE, "0");
} }
AVPacket packet; AVPacket packet;
@@ -1429,13 +1426,9 @@ static int container_ffmpeg_stop(Context_t *context) {
static int container_ffmpeg_seek_bytes(off_t pos) { static int container_ffmpeg_seek_bytes(off_t pos) {
int flag = AVSEEK_FLAG_BYTE; int flag = AVSEEK_FLAG_BYTE;
off_t current_pos = avio_tell(avContext->pb);
ffmpeg_printf(20, "seeking to position %lld (bytes)\n", pos); ffmpeg_printf(20, "seeking to position %lld (bytes)\n", pos);
if (current_pos > pos)
flag |= AVSEEK_FLAG_BACKWARD;
if (avformat_seek_file(avContext, -1, INT64_MIN, pos, INT64_MAX, flag) < 0) if (avformat_seek_file(avContext, -1, INT64_MIN, pos, INT64_MAX, flag) < 0)
{ {
ffmpeg_err( "Error seeking\n"); ffmpeg_err( "Error seeking\n");
@@ -1447,86 +1440,6 @@ static int container_ffmpeg_seek_bytes(off_t pos) {
return cERR_CONTAINER_FFMPEG_NO_ERROR; return cERR_CONTAINER_FFMPEG_NO_ERROR;
} }
/* seeking relative to a given byteposition N seconds ->for reverse playback needed */
static int container_ffmpeg_seek_rel(Context_t *context, off_t pos, long long int pts, float sec) {
Track_t * videoTrack = NULL;
Track_t * audioTrack = NULL;
Track_t * current = NULL;
seek_target_flag = 0;
ffmpeg_printf(10, "seeking %f sec relativ to %lld\n", sec, pos);
context->manager->video->Command(context, MANAGER_GET_TRACK, &videoTrack);
context->manager->audio->Command(context, MANAGER_GET_TRACK, &audioTrack);
if (videoTrack != NULL)
current = videoTrack;
else if (audioTrack != NULL)
current = audioTrack;
if (current == NULL) {
ffmpeg_err( "no track avaibale to seek\n");
return cERR_CONTAINER_FFMPEG_ERR;
}
if (pos == -1)
{
pos = avio_tell(avContext->pb);
}
if (pts == -1)
pts = current->pts;
if (sec < 0)
seek_target_flag |= AVSEEK_FLAG_BACKWARD;
ffmpeg_printf(10, "iformat->flags %d\n", avContext->iformat->flags);
if (avContext->iformat->flags & AVFMT_TS_DISCONT)
{
if (avContext->bit_rate)
{
sec *= avContext->bit_rate / 8.0;
ffmpeg_printf(10, "bit_rate %d\n", avContext->bit_rate);
}
else
{
sec *= 180000.0;
}
pos += sec;
if (pos < 0)
{
ffmpeg_err("end of file reached\n");
releaseMutex(FILENAME, __FUNCTION__,__LINE__);
return cERR_CONTAINER_FFMPEG_END_OF_FILE;
}
ffmpeg_printf(10, "1. seeking to position %lld bytes ->sec %f\n", pos, sec);
seek_target_bytes = pos;
do_seek_target_bytes = 1;
return pos;
}
else
{
sec += ((float) pts / 90000.0f);
if (sec < 0)
sec = 0;
ffmpeg_printf(10, "2. seeking to position %f sec ->time base %f %d\n", sec, av_q2d(((AVStream*) current->stream)->time_base), AV_TIME_BASE);
seek_target_seconds = sec * AV_TIME_BASE;
do_seek_target_seconds = 1;
}
releaseMutex(FILENAME, __FUNCTION__,__LINE__);
return cERR_CONTAINER_FFMPEG_NO_ERROR;
}
static int container_ffmpeg_seek(Context_t *context, float sec, int absolute) { static int container_ffmpeg_seek(Context_t *context, float sec, int absolute) {
Track_t * videoTrack = NULL; Track_t * videoTrack = NULL;
Track_t * audioTrack = NULL; Track_t * audioTrack = NULL;
@@ -1560,9 +1473,6 @@ static int container_ffmpeg_seek(Context_t *context, float sec, int absolute) {
return cERR_CONTAINER_FFMPEG_ERR; return cERR_CONTAINER_FFMPEG_ERR;
} }
if (sec < 0)
seek_target_flag |= AVSEEK_FLAG_BACKWARD;
getMutex(FILENAME, __FUNCTION__,__LINE__); getMutex(FILENAME, __FUNCTION__,__LINE__);
if (!context->playback || !context->playback->isPlaying) { if (!context->playback || !context->playback->isPlaying) {

2
libeplayer3/include/playback.h
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@@ -18,7 +18,7 @@ typedef struct PlaybackHandler_s {
unsigned char isSeeking; unsigned char isSeeking;
unsigned char isCreationPhase; unsigned char isCreationPhase;
float BackWard; int BackWard;
int SlowMotion; int SlowMotion;
int Speed; int Speed;
int AVSync; int AVSync;

19
libeplayer3/playback/playback.c
View File

@@ -294,7 +294,10 @@ static int PlaybackPlay(Context_t *context) {
context->playback->isPlaying = 1; context->playback->isPlaying = 1;
context->playback->isPaused = 0; context->playback->isPaused = 0;
context->playback->isForwarding = 0; context->playback->isForwarding = 0;
if (context->playback->BackWard) {
context->playback->BackWard = 0; context->playback->BackWard = 0;
context->output->Command(context, OUTPUT_AUDIOMUTE, "0");
}
context->playback->SlowMotion = 0; context->playback->SlowMotion = 0;
context->playback->Speed = 1; context->playback->Speed = 1;
@@ -355,7 +358,10 @@ static int PlaybackPause(Context_t *context) {
context->playback->isPaused = 1; context->playback->isPaused = 1;
//context->playback->isPlaying = 1; //context->playback->isPlaying = 1;
context->playback->isForwarding = 0; context->playback->isForwarding = 0;
if (context->playback->BackWard) {
context->playback->BackWard = 0; context->playback->BackWard = 0;
context->output->Command(context, OUTPUT_AUDIOMUTE, "0");
}
context->playback->SlowMotion = 0; context->playback->SlowMotion = 0;
context->playback->Speed = 1; context->playback->Speed = 1;
} else } else
@@ -385,7 +391,10 @@ static int PlaybackContinue(Context_t *context) {
context->playback->isPaused = 0; context->playback->isPaused = 0;
//context->playback->isPlaying = 1; //context->playback->isPlaying = 1;
context->playback->isForwarding = 0; context->playback->isForwarding = 0;
if (context->playback->BackWard) {
context->playback->BackWard = 0; context->playback->BackWard = 0;
context->output->Command(context, OUTPUT_AUDIOMUTE, "0");
}
context->playback->SlowMotion = 0; context->playback->SlowMotion = 0;
context->playback->Speed = 1; context->playback->Speed = 1;
} else } else
@@ -410,7 +419,10 @@ static int PlaybackStop(Context_t *context) {
context->playback->isPaused = 0; context->playback->isPaused = 0;
context->playback->isPlaying = 0; context->playback->isPlaying = 0;
context->playback->isForwarding = 0; context->playback->isForwarding = 0;
if (context->playback->BackWard) {
context->playback->BackWard = 0; context->playback->BackWard = 0;
context->output->Command(context, OUTPUT_AUDIOMUTE, "0");
}
context->playback->SlowMotion = 0; context->playback->SlowMotion = 0;
context->playback->Speed = 0; context->playback->Speed = 0;
@@ -543,12 +555,11 @@ static int PlaybackFastBackward(Context_t *context,int* speed) {
{ {
context->playback->isSeeking = 1; context->playback->isSeeking = 1;
context->playback->Speed = *speed; context->playback->Speed = *speed;
context->playback->BackWard = 2^(*speed); context->playback->BackWard = 1;
playback_printf(1, "S %d B %f\n", context->playback->Speed, context->playback->BackWard); playback_printf(1, "S %d B %d\n", context->playback->Speed, context->playback->BackWard);
} }
context->output->Command(context, OUTPUT_AUDIOMUTE, "1");
context->output->Command(context, OUTPUT_CLEAR, NULL); context->output->Command(context, OUTPUT_CLEAR, NULL);
if (context->output->Command(context, OUTPUT_REVERSE, NULL) < 0) if (context->output->Command(context, OUTPUT_REVERSE, NULL) < 0)
{ {
@@ -564,6 +575,8 @@ static int PlaybackFastBackward(Context_t *context,int* speed) {
ret = cERR_PLAYBACK_ERROR; ret = cERR_PLAYBACK_ERROR;
} }
if (context->playback->BackWard)
context->output->Command(context, OUTPUT_AUDIOMUTE, "1");
context->playback->isSeeking = 0; context->playback->isSeeking = 0;
playback_printf(10, "exiting with value %d\n", ret); playback_printf(10, "exiting with value %d\n", ret);