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add audio offset

This commit is contained in:
Anthony Minessale 2015-03-16 14:58:59 -05:00 committed by Michael Jerris
parent adbb197414
commit 697107547a
1 changed files with 48 additions and 30 deletions
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78
src/mod/formats/mod_webm/mod_webm.cpp
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@ -28,6 +28,7 @@
*/
#include <switch.h>
// #include "mkvreader.hpp"
// #include "mkvparser.hpp"
// #include "mkvmuxer.hpp"
@ -63,12 +64,14 @@ struct webm_file_context {
switch_codec_t video_codec;
switch_mutex_t *mutex;
switch_buffer_t *buf;
switch_buffer_t *audio_buffer;
switch_timer_t timer;
// uint64_t last_pts;
int offset;
uint64_t audio_duration;
int audio_start;
int vid_ready;
int audio_ready;
mkvmuxer::MkvWriter *writer;
mkvmuxer::Segment *segment;
};
@ -101,6 +104,8 @@ static switch_status_t webm_file_open(switch_file_handle_t *handle, const char *
}
switch_mutex_init(&context->mutex, SWITCH_MUTEX_NESTED, handle->memory_pool);
switch_core_timer_init(&context->timer, "soft", 1, 1000, context->pool);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "init timer\n");
if (switch_test_flag(handle, SWITCH_FILE_FLAG_WRITE)) {
flags |= SWITCH_FOPEN_WRITE | SWITCH_FOPEN_CREATE;
@ -145,6 +150,7 @@ static switch_status_t webm_file_open(switch_file_handle_t *handle, const char *
}
context->audio = static_cast<mkvmuxer::AudioTrack*>(context->segment->GetTrackByNumber(context->audio_track_id));
context->audio->set_codec_id("A_" AUDIO_CODEC);
switch_buffer_create_dynamic(&context->audio_buffer, 512, 512, 0);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "sample rate: %d, channels: %d\n", handle->samplerate, handle->channels);
@ -240,6 +246,7 @@ static switch_status_t webm_file_close(switch_file_handle_t *handle)
}
switch_buffer_destroy(&context->buf);
switch_buffer_destroy(&context->audio_buffer);
return SWITCH_STATUS_SUCCESS;
}
@ -261,17 +268,38 @@ static switch_status_t webm_file_write(switch_file_handle_t *handle, void *data,
uint32_t datalen = *len * 2 * handle->channels;
switch_status_t status = SWITCH_STATUS_SUCCESS;
uint8_t buf[SWITCH_RECOMMENDED_BUFFER_SIZE];
uint8_t buf[SWITCH_RECOMMENDED_BUFFER_SIZE] = { 0 }, *bp = buf;
uint32_t encoded_rate;
webm_file_context_t *context = (webm_file_context_t *)handle->private_info;
uint32_t size = 0;
if (!context->vid_ready) {
return status;
}
context->audio_duration += *len;
if (switch_test_flag(handle, SWITCH_FILE_NATIVE)) {
size = datalen;
memcpy(buf, data, datalen);
} else {
uint32_t rb;
if (!context->audio_ready) {
int offset = 1200;
int fps = handle->samplerate / *len;
int lead_frames = (offset * fps) / 1000;
for (int x = 0; x < lead_frames; x++) {
switch_buffer_write(context->audio_buffer, buf, datalen);
}
context->audio_ready = 1;
}
switch_buffer_write(context->audio_buffer, data, datalen);
rb = switch_buffer_read(context->audio_buffer, data, datalen);
datalen = rb;
size = SWITCH_RECOMMENDED_BUFFER_SIZE;
switch_core_codec_encode(&context->audio_codec, NULL,
data, datalen,
@ -279,32 +307,22 @@ static switch_status_t webm_file_write(switch_file_handle_t *handle, void *data,
buf, &size, &encoded_rate, NULL);
}
switch_mutex_lock(context->mutex);
if (!context->timer.interval) {
goto end; // block audio before video is there
switch_core_timer_init(&context->timer, "soft", 1, 1000, context->pool);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "init timer\n");
} else if(!context->audio_start) { // try make up some sampels if the video already start
}
if (size > 0) {
// timecode still need to figure out for sync
switch_mutex_lock(context->mutex);
switch_core_timer_sync(&context->timer);
// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Writing audio %d bytes, ts: %lld\n", size, context->timer.samplecount * 1000LL);
bool ret = context->segment->AddFrame(buf, size, context->audio_track_id, context->timer.samplecount * 1000LL, true);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Writing audio %d bytes, ts: %lld\n", size, context->timer.samplecount);
bool ret = context->segment->AddFrame(bp, size, context->audio_track_id, context->timer.samplecount * 1000LL, true);
// bool ret = context->segment->AddFrame((const uint8_t *)buf, size, context->audio_track_id, context->audio_duration, true);
switch_mutex_unlock(context->mutex);
if (!ret) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error writing audio %d bytes, pts: %lld or %lld\n", size, context->timer.samplecount * 1000LL, context->audio_duration);
}
}
end:
switch_mutex_unlock(context->mutex);
return status;
}
@ -371,7 +389,7 @@ static switch_status_t do_write_video(switch_file_handle_t *handle, switch_frame
// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "%02x %02x %02x | len:%d m:%d st:%d i:%d\n", hdr[0], hdr[1], hdr[2], datalen, frame->m, start_bit, is_iframe);
switch_mutex_lock(context->mutex);
if (!context->video) {
context->video_track_id = context->segment->AddVideoTrack(frame->img->d_w, frame->img->d_h, 0);
@ -391,19 +409,15 @@ static switch_status_t do_write_video(switch_file_handle_t *handle, switch_frame
const void *data;
int duration = 0;
if (!context->timer.interval) {
switch_core_timer_init(&context->timer, "soft", 1, 1000, context->pool);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_INFO, "init timer\n");
} else {
switch_core_timer_sync(&context->timer);
}
switch_buffer_peek_zerocopy(context->buf, &data);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "VID samplecount: %u\n", context->timer.samplecount);
// switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "samplecount: %u\n", context->timer.samplecount);
switch_mutex_lock(context->mutex);
switch_core_timer_sync(&context->timer);
bool ret = false;
ret = context->segment->AddFrame((const uint8_t *)data, used, context->video_track_id, context->timer.samplecount * 1000LL, is_key);
switch_mutex_unlock(context->mutex);
if (!ret) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Error add frame %d bytes, timecode: %llu\n", used, context->timer.samplecount * 1000LL);
@ -414,7 +428,7 @@ static switch_status_t do_write_video(switch_file_handle_t *handle, switch_frame
}
end:
switch_mutex_unlock(context->mutex);
return status;
}
@ -426,7 +440,7 @@ static switch_status_t webm_file_write_video(switch_file_handle_t *handle, switc
webm_file_context_t *context = (webm_file_context_t *)handle->private_info;
if (!frame->img) {
return do_write_video(handle, frame);
status = do_write_video(handle, frame);
} else {
switch_frame_t eframe = { 0 };
uint8_t data[SWITCH_RTP_MAX_BUF_LEN];
@ -445,6 +459,10 @@ static switch_status_t webm_file_write_video(switch_file_handle_t *handle, switc
} while(status == SWITCH_STATUS_SUCCESS && encode_status == SWITCH_STATUS_MORE_DATA);
}
if (status == SWITCH_STATUS_SUCCESS) {
context->vid_ready = 1;
}
return status;
}