void set_encoding_quality(struct x264lib_ctx *ctx, int pct)
{
if (ctx->supports_csc_option) {
int new_colour_sampling = get_x264_colour_sampling(ctx, pct);
if (ctx->colour_sampling!=new_colour_sampling) {
//pixel encoding has changed, we must re-init everything:
//printf("set_encoding_quality(%i) old colour_sampling=%i, new colour_sampling %i\n", pct, ctx->colour_sampling, new_colour_sampling);
do_clean_encoder(ctx);
do_init_encoder(ctx, ctx->width , ctx->height, pct, ctx->supports_csc_option);
return;
}
}
if ((ctx->quality & ~0x1)!=(pct & ~0x1)) {
float new_quality = get_x264_quality(pct);
//float old_quality = ctx->x264_quality;
//printf("set_encoding_quality(%i) was %i, new x264 quality %f was %f\n", pct, ctx->quality, new_quality, old_quality);
//only f_rf_constant was changed,
//read new configuration is sufficient
x264_param_t param;
// Retrieve current parameters
x264_encoder_parameters(ctx->encoder, ¶m);
ctx->quality = pct;
ctx->x264_quality = new_quality;
param.rc.f_rf_constant = new_quality;
x264_encoder_reconfig(ctx->encoder, ¶m);
}
int old_csc_algo = ctx->csc_algo;
ctx->csc_algo = get_csc_algo_for_quality(pct);
if (old_csc_algo!=ctx->csc_algo) {
ctx->rgb2yuv = init_encoder_csc(ctx);
}
}
void H264Encoder::init_(const int wid, const int hei) {
// 0. building encoder parameters.
x264_param_default_preset(&x264_opt_, "ultrafast", "zerolatency");
x264_opt_.i_width = wid;
x264_opt_.i_height = hei;
x264_opt_.i_threads = 1;
x264_opt_.b_repeat_headers = 1;
x264_opt_.b_intra_refresh = 1;
x264_opt_.rc.i_rc_method = X264_RC_CQP;
x264_opt_.rc.i_qp_constant = 24;
x264_opt_.rc.i_qp_min = 24;
x264_opt_.rc.i_qp_max = 24;
//x264_param_default(&opt);
x264_param_apply_profile(&x264_opt_, "baseline");
// 1. Prepare the output buffer and target file
x264_picture_alloc(&x264_picin_, X264_CSP_NV12, x264_opt_.i_width, x264_opt_.i_height);
x264_picture_alloc(&x264_picout_, X264_CSP_NV12, x264_opt_.i_width, x264_opt_.i_height);
// 2. Building the encoder handler
x264_hdl_ = x264_encoder_open(&x264_opt_);
x264_encoder_parameters(x264_hdl_, &x264_opt_);
}
int H264Encoder::Prepare(const MediaDescription& desc) {
if ( desc.isVideo == false)
return -1;
int wid = desc.width;
int hei = desc.height;
// 0. building a default encoder parameters.
x264_param_default_preset(&x264_opt_, "ultrafast", "zerolatency");
x264_opt_.rc.i_rc_method = X264_RC_CRF;
x264_opt_.rc.i_bitrate = 512;
x264_opt_.i_nal_hrd = X264_NAL_HRD_CBR;
//x264_param_default(&opt);
// 1. Setting the fields of parameter struct
x264_opt_.i_width = wid;
x264_opt_.i_height = hei;
//opt.i_slice_count = 5;
//opt.b_intra_refresh = 1;
// 3. Prepare the output buffer and target file
x264_picture_alloc(&x264_picin_[0], X264_CSP_NV12, x264_opt_.i_width, x264_opt_.i_height);
x264_picture_alloc(&x264_picin_[1], X264_CSP_NV12, x264_opt_.i_width, x264_opt_.i_height);
x264_picture_alloc(&x264_picout_, X264_CSP_NV12, x264_opt_.i_width, x264_opt_.i_height);
ppIndex = -1;
// 4. Building the encoder handler
x264_hdl_ = x264_encoder_open(&x264_opt_);
x264_encoder_parameters(x264_hdl_, &x264_opt_);
return 0;
}
void change_encoding_speed(struct x264lib_ctx *ctx, int increase)
{
x264_param_t param;
x264_encoder_parameters(ctx->encoder, ¶m);
ctx->encoding_preset -= increase;
if (ctx->encoding_preset < 0)
ctx->encoding_preset = 0;
if (ctx->encoding_preset > 5)
ctx->encoding_preset = 5;
x264_param_default_preset(¶m, x264_preset_names[ctx->encoding_preset], "zerolatency");
//printf("Setting encoding preset %s %d\n", x264_preset_names[ctx->encoding_preset], ctx->encoding_preset);
x264_param_apply_profile(¶m, "baseline");
x264_encoder_reconfig(ctx->encoder, ¶m);
}
void set_encoding_speed(struct x264lib_ctx *ctx, int pct)
{
x264_param_t param;
x264_encoder_parameters(ctx->encoder, ¶m);
int new_preset = 7-MAX(0, MIN(7, pct/12.5));
if (new_preset==ctx->encoding_preset)
return;
ctx->encoding_preset = new_preset;
//"tune" options: film, animation, grain, stillimage, psnr, ssim, fastdecode, zerolatency
//Multiple tunings can be used if separated by a delimiter in ",./-+"
//however multiple psy tunings cannot be used.
//film, animation, grain, stillimage, psnr, and ssim are psy tunings.
x264_param_default_preset(¶m, x264_preset_names[ctx->encoding_preset], "zerolatency");
x264_param_apply_profile(¶m, "baseline");
x264_encoder_reconfig(ctx->encoder, ¶m);
}
int compress_image(struct x264lib_ctx *ctx, x264_picture_t *pic_in, uint8_t **out, int *outsz, int quality_override)
{
if (!ctx->encoder || !ctx->rgb2yuv) {
free_csc_image(pic_in);
*out = NULL;
*outsz = 0;
return 1;
}
x264_picture_t pic_out;
/* Encoding */
pic_in->i_pts = 1;
if (quality_override>=0) {
// Retrieve current parameters and override quality for this frame
float new_q = get_x264_quality(quality_override);
if (new_q!=ctx->x264_quality) {
x264_param_t *param = malloc(sizeof(x264_param_t));
x264_encoder_parameters(ctx->encoder, param);
param->rc.f_rf_constant = new_q;
pic_in->param = param;
pic_in->param->param_free = free;
}
}
x264_nal_t* nals;
int i_nals;
int frame_size = x264_encoder_encode(ctx->encoder, &nals, &i_nals, pic_in, &pic_out);
if (frame_size < 0) {
fprintf(stderr, "Problem during x264_encoder_encode: frame_size is invalid!\n");
free_csc_image(pic_in);
*out = NULL;
*outsz = 0;
return 2;
}
free_csc_image(pic_in);
/* Do not clean that! */
*out = nals[0].p_payload;
*outsz = frame_size;
return 0;
}
jlong Java_com_H264_H264Encoder_CompressBegin(JNIEnv* env,jobject thiz,
jint width,jint height,
jint FrameRate,
jbyteArray filename){
en = (Encoder *) malloc(sizeof(Encoder));
en->param = (x264_param_t *) malloc(sizeof(x264_param_t));
en->picture = (x264_picture_t *) malloc(sizeof(x264_picture_t));
opt = (cli_opt_t *)malloc(sizeof(cli_opt_t));
//test
nalcount=0;
last_pts = 0;
i_frame= 0;
//test
x264_nal_t *headers;
int i_nal;
jbyte * fname = (jbyte*)(*env)->GetByteArrayElements(env, filename, 0);
mp4_output.open_file( fname, &opt->hout, &output_opt );
x264_param_default(en->param); // default param
en->param->i_log_level = X264_LOG_NONE;
en->param->i_width = width; // frame width
en->param->i_height = height; // frame height
en->param->rc.i_lookahead =0;
en->param->i_bframe=0;
en->param->i_fps_num =FrameRate;
en->param->i_fps_den = 1;
en->param->i_frame_reference=5;
en->param->i_bframe_adaptive=1;
en->param->b_vfr_input=1;
en->param->i_timebase_num = 1;
en->param->i_timebase_den = FrameRate;
en->param->i_csp =X264_CSP_I420;
en->param->analyse.b_psnr = 1;
en->param->analyse.b_ssim = 1;
int frames = 0;
en->param->i_frame_total = 0;
///////
// Intra refres:
en->param->i_keyint_max = 30;
en->param->b_intra_refresh = 1;
//Rate control:
en->param->rc.f_rf_constant = 25;
en->param->rc.f_rf_constant_max = 35;
//For streaming:
en->param->b_repeat_headers = 0;
en->param->b_annexb = 0;
///////
uv = en->param->i_width * en->param->i_height;
if ((en->handle = x264_encoder_open(en->param)) == 0) {
return 0;
}
x264_encoder_parameters( en->handle, en->param );
/* Create a new pic */
x264_picture_alloc(en->picture, X264_CSP_I420, en->param->i_width,
en->param->i_height);
mp4_output.set_param(opt->hout,en->param);
ticks_per_frame = (int64_t)en->param->i_timebase_den * en->param->i_fps_den / en->param->i_timebase_num / en->param->i_fps_num;
ticks_per_frame = X264_MAX( ticks_per_frame, 1 );
__android_log_print(ANDROID_LOG_INFO, "H264Encoder native", "ticks_per_frame:%d",ticks_per_frame);
if(x264_encoder_headers( en->handle, &headers, &i_nal)<0)
;
__android_log_print(ANDROID_LOG_INFO, "H264Encoder native", "encoder header:%d",i_nal);
mp4_output.write_headers(opt->hout, headers);
(*env)->ReleaseByteArrayElements(env,filename,fname,0);
return (jlong) en;
}
// See https://gist.github.com/roxlu/0f61a499df75e64b764d for an older version of this, with some rate control tests
// @todo - we should check if the supplied settings are valid for the current profile.. e.g. bframes are not supported by the baseline profile
bool VideoEncoder::initializeX264() {
assert(settings.width > 0);
assert(settings.height > 0);
assert(settings.fps > 0);
int r = 0;
x264_param_t* p = ¶ms;
std::string preset = (settings.preset.size()) ? settings.preset : "superfast";
std::string tune = (settings.tune.size()) ? settings.tune : "zerolatency";
STREAMER_STATUS("x264 using preset: %s and tune: %s\n", preset.c_str(), tune.c_str());
r = x264_param_default_preset(p, preset.c_str(), tune.c_str());
if(r != 0) {
STREAMER_ERROR("error: cannot set the default preset on x264.\n");
return false;
}
p->i_threads = settings.threads;
p->i_width = settings.width;
p->i_height = settings.height;
p->i_fps_num = settings.fps;
p->i_fps_den = 1;
p->b_annexb = 0; // flv == no annexb, but strangely, when I disable it the generated flv cannot be played back, for raw h264 you'll need to set annexb to 1 when you want to play it in vlc (vlc isn't properly playing back flv)
p->rc.i_rc_method = X264_RC_ABR; // when you're limited to bandwidth you set the vbv_buffer_size and vbv_max_bitrate using the X264_RC_ABR rate control method. The vbv_buffer_size is a decoder option and tells the decoder how much data must be buffered before playback can start. When vbv_max_bitrate == vbv_buffer_size, then it will take one second before the playback might start. when vbv_buffer_size == vbv_max_bitrate * 0.5, it might start in 0.5 sec.
p->rc.i_bitrate = settings.bitrate;
p->rc.i_vbv_buffer_size = (settings.vbv_buffer_size < 0) ? p->rc.i_bitrate : settings.vbv_buffer_size;
p->rc.i_vbv_max_bitrate = (settings.vbv_max_bitrate < 0) ? p->rc.i_bitrate : settings.vbv_max_bitrate;;
if(settings.keyint_max > 0) {
p->i_keyint_max = settings.keyint_max;
}
if(settings.bframe > 0) {
p->i_bframe = settings.bframe;
}
if(settings.level_idc > 0) {
p->i_level_idc = settings.level_idc;
}
#if !defined(NDEBUG)
p->i_log_level = X264_LOG_DEBUG;
p->pf_log = videoencoder_x264_log;
#endif
if(settings.profile.size()) {
r = x264_param_apply_profile(p, settings.profile.c_str());
if(r != 0) {
STREAMER_ERROR("error: cannot set the baseline profile on x264.\n");
return false;
}
}
encoder = x264_encoder_open(p);
if(!encoder) {
STREAMER_ERROR("error: cannot create the encoder.\n");
return false;
}
x264_encoder_parameters(encoder, ¶ms);
print_x264_params(p);
return true;
}
static void *start_encoder( void *ptr )
{
obe_vid_enc_params_t *enc_params = ptr;
obe_t *h = enc_params->h;
obe_encoder_t *encoder = enc_params->encoder;
x264_t *s = NULL;
x264_picture_t pic, pic_out;
x264_nal_t *nal;
int i_nal, frame_size = 0, user_sar_width, user_sar_height;
int64_t pts = 0, arrival_time = 0, frame_duration, buffer_duration;
int64_t *pts2;
float buffer_fill;
obe_raw_frame_t *raw_frame;
obe_coded_frame_t *coded_frame;
/* TODO: check for width, height changes */
/* Lock the mutex until we verify and fetch new parameters */
pthread_mutex_lock( &encoder->encoder_mutex );
enc_params->avc_param.pf_log = x264_logger;
s = x264_encoder_open( &enc_params->avc_param );
if( !s )
{
pthread_mutex_unlock( &encoder->encoder_mutex );
fprintf( stderr, "[x264]: encoder configuration failed\n" );
goto end;
}
x264_encoder_parameters( s, &enc_params->avc_param );
encoder->encoder_params = malloc( sizeof(enc_params->avc_param) );
if( !encoder->encoder_params )
{
pthread_mutex_unlock( &encoder->encoder_mutex );
syslog( LOG_ERR, "Malloc failed\n" );
goto end;
}
memcpy( encoder->encoder_params, &enc_params->avc_param, sizeof(enc_params->avc_param) );
encoder->is_ready = 1;
/* XXX: This will need fixing for soft pulldown streams */
frame_duration = av_rescale_q( 1, (AVRational){enc_params->avc_param.i_fps_den, enc_params->avc_param.i_fps_num}, (AVRational){1, OBE_CLOCK} );
buffer_duration = frame_duration * enc_params->avc_param.sc.i_buffer_size;
/* Broadcast because input and muxer can be stuck waiting for encoder */
pthread_cond_broadcast( &encoder->encoder_cv );
pthread_mutex_unlock( &encoder->encoder_mutex );
user_sar_width = enc_params->avc_param.vui.i_sar_width;
user_sar_height = enc_params->avc_param.vui.i_sar_height;
while( 1 )
{
pthread_mutex_lock( &encoder->encoder_mutex );
if( encoder->cancel_thread )
{
pthread_mutex_unlock( &encoder->encoder_mutex );
break;
}
if( !encoder->num_raw_frames )
pthread_cond_wait( &encoder->encoder_cv, &encoder->encoder_mutex );
if( encoder->cancel_thread )
{
pthread_mutex_unlock( &encoder->encoder_mutex );
break;
}
/* Reset the speedcontrol buffer if the source has dropped frames. Otherwise speedcontrol
* stays in an underflow state and is locked to the fastest preset */
pthread_mutex_lock( &h->drop_mutex );
if( h->encoder_drop )
{
pthread_mutex_lock( &h->smoothing_mutex );
h->smoothing_buffer_complete = 0;
pthread_mutex_unlock( &h->smoothing_mutex );
syslog( LOG_INFO, "Speedcontrol reset\n" );
x264_speedcontrol_sync( s, enc_params->avc_param.sc.i_buffer_size, enc_params->avc_param.sc.f_buffer_init, 0 );
h->encoder_drop = 0;
}
pthread_mutex_unlock( &h->drop_mutex );
raw_frame = encoder->frames[0];
pthread_mutex_unlock( &encoder->encoder_mutex );
if( convert_obe_to_x264_pic( &pic, raw_frame ) < 0 )
{
syslog( LOG_ERR, "Malloc failed\n" );
break;
}
/* FIXME: if frames are dropped this might not be true */
pic.i_pts = pts++;
pts2 = malloc( sizeof(int64_t) );
if( !pts2 )
{
syslog( LOG_ERR, "Malloc failed\n" );
break;
}
pts2[0] = raw_frame->pts;
pic.opaque = pts2;
/* If the AFD has changed, then change the SAR. x264 will write the SAR at the next keyframe
* TODO: allow user to force keyframes in order to be frame accurate */
if( raw_frame->sar_width != enc_params->avc_param.vui.i_sar_width ||
raw_frame->sar_height != enc_params->avc_param.vui.i_sar_height )
{
/* If the frame's SAR has been guessed but the user entered a reasonable SAR, then use it.
* Otherwise, use the guessed SAR. */
if( raw_frame->sar_guess && user_sar_width > 0 && user_sar_height > 0 )
{
enc_params->avc_param.vui.i_sar_width = user_sar_width;
enc_params->avc_param.vui.i_sar_height = user_sar_height;
}
else
{
enc_params->avc_param.vui.i_sar_width = raw_frame->sar_width;
enc_params->avc_param.vui.i_sar_height = raw_frame->sar_height;
}
x264_encoder_reconfig( s, &enc_params->avc_param );
}
/* Update speedcontrol based on the system state */
if( h->obe_system == OBE_SYSTEM_TYPE_GENERIC )
{
pthread_mutex_lock( &h->smoothing_mutex );
if( h->smoothing_buffer_complete )
{
/* Wait until a frame is sent out. */
while( !h->smoothing_last_exit_time )
pthread_cond_wait( &h->smoothing_out_cv, &h->smoothing_mutex );
/* time elapsed since last frame was removed */
int64_t last_frame_delta = get_input_clock_in_mpeg_ticks( h ) - h->smoothing_last_exit_time;
if( h->num_smoothing_frames )
{
int64_t frame_durations = h->smoothing_frames[h->num_smoothing_frames-1]->real_dts - h->smoothing_frames[0]->real_dts + frame_duration;
buffer_fill = (float)(frame_durations - last_frame_delta)/buffer_duration;
}
else
buffer_fill = (float)(-1 * last_frame_delta)/buffer_duration;
x264_speedcontrol_sync( s, buffer_fill, enc_params->avc_param.sc.i_buffer_size, 1 );
}
pthread_mutex_unlock( &h->smoothing_mutex );
}
frame_size = x264_encoder_encode( s, &nal, &i_nal, &pic, &pic_out );
arrival_time = raw_frame->arrival_time;
raw_frame->release_data( raw_frame );
raw_frame->release_frame( raw_frame );
remove_frame_from_encode_queue( encoder );
if( frame_size < 0 )
{
syslog( LOG_ERR, "x264_encoder_encode failed\n" );
break;
}
if( frame_size )
{
coded_frame = new_coded_frame( encoder->stream_id, frame_size );
if( !coded_frame )
{
syslog( LOG_ERR, "Malloc failed\n" );
break;
}
memcpy( coded_frame->data, nal[0].p_payload, frame_size );
coded_frame->is_video = 1;
coded_frame->len = frame_size;
coded_frame->cpb_initial_arrival_time = pic_out.hrd_timing.safe_cpb_initial_arrival_time;
coded_frame->cpb_final_arrival_time = pic_out.hrd_timing.cpb_final_arrival_time;
coded_frame->real_dts = pic_out.hrd_timing.cpb_removal_time;
coded_frame->real_pts = pic_out.hrd_timing.dpb_output_time;
pts2 = pic_out.opaque;
coded_frame->pts = pts2[0];
coded_frame->random_access = pic_out.b_keyframe;
coded_frame->priority = IS_X264_TYPE_I( pic_out.i_type );
free( pic_out.opaque );
if( h->obe_system == OBE_SYSTEM_TYPE_LOW_LATENCY )
{
coded_frame->arrival_time = arrival_time;
//printf("\n Encode Latency %"PRIi64" \n", obe_mdate() - coded_frame->arrival_time );
}
add_to_smoothing_queue( h, coded_frame );
}
}
end:
if( s )
x264_encoder_close( s );
free( enc_params );
return NULL;
}
