int main()
{
point p = {1,8};
std::cout << p <<'\n';
std::cout << "page = " << get_page(p) << '\n';
std::cout << "byte index = " << get_byte_index(p) << '\n';
std::cout << "bit pos = " << get_bit_pos(p) << '\n';
/*
to set the bit
*/
buffer[get_byte_index(p)] |= (1 << get_bit_pos(p));
}
static int sfs_fill_super(struct super_block *sb, void *data, int silent)
{
sfs_info_t *info;
printk(KERN_INFO "sfs: sfs_fill_super\n");
if (!(info = (sfs_info_t *)(kzalloc(sizeof(sfs_info_t), GFP_KERNEL))))
return -ENOMEM;
info->vfs_sb = sb;
if (init_browsing(info) < 0)
{
kfree(info);
return -EIO;
}
/* Updating the VFS super_block */
sb->s_magic = info->sb.type;
sb->s_blocksize = info->sb.block_size;
sb->s_blocksize_bits = get_bit_pos(info->sb.block_size);
sb->s_type = &sfs; // file_system_type
sb->s_op = &sfs_sops; // super block operations
sfs_root_inode = iget_locked(sb, ROOT_INODE_NUM); // obtain an inode from VFS
if (!sfs_root_inode)
{
shut_browsing(info);
kfree(info);
return -EACCES;
}
if (sfs_root_inode->i_state & I_NEW) // allocated fresh now
{
printk(KERN_INFO "sfs: Got new root inode, let's fill in\n");
sfs_root_inode->i_op = &sfs_iops; // inode operations
sfs_root_inode->i_mode = S_IFDIR | S_IRWXU | S_IRWXG | S_IRWXO;
sfs_root_inode->i_fop = &sfs_fops; // file operations
sfs_root_inode->i_mapping->a_ops = &sfs_aops; // address operations
unlock_new_inode(sfs_root_inode);
}
else
{
printk(KERN_INFO "sfs: Got root inode from inode cache\n");
}
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,4,0))
sb->s_root = d_alloc_root(sfs_root_inode);
#else
sb->s_root = d_make_root(sfs_root_inode);
#endif
if (!sb->s_root)
{
iget_failed(sfs_root_inode);
shut_browsing(info);
kfree(info);
return -ENOMEM;
}
return 0;
}
int main(int argc, char **argv)
{
FILE *infile, *strfile, *reconfile;
long input_file_size;
yuv_frame_t orig,ref[MAX_REF_FRAMES];
yuv_frame_t rec[MAX_REORDER_BUFFER+1]; // Last one is for temp use
int rec_available[MAX_REORDER_BUFFER] = {0};
int last_frame_output=-1;
int num_encoded_frames,num_bits,start_bits,end_bits;
int sub_gop=1;
int rec_buffer_idx;
int k,frame_num,frame_num0,r;
int frame_offset;
int ysize,csize;
long frame_size;
int width,height;
int min_interp_depth;
int last_intra_frame_num = 0;
uint32_t acc_num_bits;
snrvals psnr;
snrvals accsnr;
double bit_rate_in_kbps;
enc_params *params;
encoder_info_t encoder_info;
int y4m_output;
// Keep track of last P frame for using the right references for the tail of a sequence in re-ordered modes
int last_PorI_frame;
init_use_simd();
/* Read commands from command line and from configuration file(s) */
if (argc < 3)
{
fprintf(stdout,"usage: %s <parameters>\n",argv[0]);
fatalerror("");
}
params = parse_config_params(argc, argv);
if (params == NULL)
{
fatalerror("Error while reading encoder paramaters.");
}
check_parameters(params);
/* Open files */
if (!(infile = fopen(params->infilestr,"rb")))
{
fatalerror("Could not open in-file for reading.");
}
if (!(strfile = fopen(params->outfilestr,"wb")))
{
fatalerror("Could not open out-file for writing.");
}
reconfile = NULL;
y4m_output = 0;
if (params->reconfilestr) {
char *p;
if (!(reconfile = fopen(params->reconfilestr,"wb")))
{
fatalerror("Could not open recon-file for reading.");
}
p = strrchr(params->reconfilestr,'.');
y4m_output = p != NULL && strcmp(p,".y4m") == 0;
}
fseek(infile, 0, SEEK_END);
input_file_size = ftell(infile);
fseek(infile, 0, SEEK_SET);
if (y4m_output) {
fprintf(reconfile,
"YUV4MPEG2 W%d H%d F%d:1 Ip A%d:%d C%d",
params->width, params->height, (int)params->frame_rate, params->aspectnum, params->aspectden, params->subsample);
if (params->input_bitdepth > 8)
fprintf(reconfile, "p%d XYSCSS=%dp%d", params->input_bitdepth, params->subsample, params->input_bitdepth);
fprintf(reconfile, "\x0a");
}
accsnr.y = 0;
accsnr.u = 0;
accsnr.v = 0;
acc_num_bits = 0;
height = params->height;
width = params->width;
ysize = height * width;
csize = ysize >> 2*(params->subsample == 420);
frame_size = (ysize + 2*csize) * (1 + (params->input_bitdepth > 8));
encoder_info.params = params;
/* Create frames*/
TEMPLATE(create_yuv_frame)(&orig,width,height,params->subsample == 420,0,0,params->bitdepth,params->input_bitdepth);
for (r=0;r<MAX_REORDER_BUFFER+1;r++){
TEMPLATE(create_yuv_frame)(&rec[r],width,height,params->subsample == 420,0,0,params->bitdepth,params->input_bitdepth);
}
for (r=0;r<MAX_REF_FRAMES;r++){ //TODO: Use Long-term frame instead of a large sliding window
TEMPLATE(create_yuv_frame)(&ref[r],width,height,params->subsample == 420,PADDING_Y,PADDING_Y,params->bitdepth,params->input_bitdepth);
}
if (params->interp_ref) {
for (r=0;r<MAX_SKIP_FRAMES;r++){
encoder_info.interp_frames[r] = malloc(sizeof(yuv_frame_t));
TEMPLATE(create_yuv_frame)(encoder_info.interp_frames[r],width,height,params->subsample == 420,PADDING_Y,PADDING_Y,params->bitdepth,params->input_bitdepth);
}
}
/* Initialize main bit stream */
stream_t stream;
stream.bitstream = (uint8_t *)malloc(MAX_BUFFER_SIZE * sizeof(uint8_t));
stream.bitbuf = 0;
stream.bitrest = 32;
stream.bytepos = 0;
stream.bytesize = MAX_BUFFER_SIZE;
/* Configure encoder */
encoder_info.orig = &orig;
for (r=0;r<MAX_REF_FRAMES;r++){
encoder_info.ref[r] = &ref[r];
}
encoder_info.stream = &stream;
encoder_info.width = width;
encoder_info.height = height;
encoder_info.frame_info.max_clpf_strength = encoder_info.params->max_clpf_strength;
encoder_info.deblock_data = (deblock_data_t *)malloc((height/MIN_PB_SIZE) * (width/MIN_PB_SIZE) * sizeof(deblock_data_t));
alloc_wmatrices(encoder_info.wmatrix, 0);
alloc_wmatrices(encoder_info.iwmatrix, 1);
/* Write sequence header */ //TODO: Separate function for sequence header
start_bits = get_bit_pos(&stream);
write_sequence_header(&stream, params);
end_bits = get_bit_pos(&stream);
num_bits = end_bits-start_bits;
acc_num_bits += num_bits;
printf("SH: %4d bits\n",num_bits);
/* Start encoding sequence */
num_encoded_frames = 0;
sub_gop = max(1,params->num_reorder_pics+1);
min_interp_depth = log2i(params->num_reorder_pics+1)-3;
if (params->frame_rate > 30) min_interp_depth--;
last_PorI_frame = -1;
rate_control_t rc;
encoder_info.rc = &rc;
if (params->bitrate > 0) {
int target_bits = (int)(params->bitrate / params->frame_rate);
int sb_size = 1 << params->log2_sb_size;
int num_sb = ((width + sb_size - 1) / sb_size) * ((height + sb_size - 1) / sb_size);
init_rate_control_per_sequence(&rc, target_bits, num_sb);
}
for (frame_num0 = params->skip; frame_num0 < (params->skip + params->num_frames) && (frame_num0+1)*frame_size <= input_file_size; frame_num0+=sub_gop)
{
for (k=0; k<sub_gop; k++) {
int r,r1,r2,r3;
/* Initialize frame info */
frame_offset = reorder_frame_offset(k,sub_gop,params->dyadic_coding);
frame_num = frame_num0 + frame_offset;
// If there is an initial I frame and reordering need to jump to the next P frame
if (frame_num<params->skip) continue;
encoder_info.frame_info.frame_num = frame_num - params->skip;
rec_buffer_idx = encoder_info.frame_info.frame_num%MAX_REORDER_BUFFER;
encoder_info.rec = &rec[rec_buffer_idx];
encoder_info.tmp = &rec[MAX_REORDER_BUFFER];
encoder_info.rec->frame_num = encoder_info.frame_info.frame_num;
if (params->num_reorder_pics==0) {
if (params->intra_period > 0)
encoder_info.frame_info.frame_type = ((num_encoded_frames%params->intra_period) == 0 ? I_FRAME : P_FRAME);
else
encoder_info.frame_info.frame_type = (num_encoded_frames == 0 ? I_FRAME : P_FRAME);
} else {
if (params->intra_period > 0)
encoder_info.frame_info.frame_type = ((encoder_info.frame_info.frame_num%params->intra_period) == 0 ? I_FRAME :
((encoder_info.frame_info.frame_num%sub_gop)==0 ? P_FRAME : B_FRAME));
else
encoder_info.frame_info.frame_type = (encoder_info.frame_info.frame_num == 0 ? I_FRAME :
((encoder_info.frame_info.frame_num%sub_gop)==0 ? P_FRAME : B_FRAME));
}
int coded_phase = (num_encoded_frames + sub_gop - 2) % sub_gop + 1;
int b_level = log2i(coded_phase);
encoder_info.frame_info.b_level = b_level;
encoder_info.frame_info.phase = encoder_info.frame_info.frame_num % (encoder_info.params->num_reorder_pics + 1);
if (encoder_info.frame_info.frame_type == I_FRAME){
encoder_info.frame_info.qp = params->qp + params->dqpI;
last_intra_frame_num = encoder_info.frame_info.frame_num;
}
else if (params->num_reorder_pics==0) {
if (num_encoded_frames % params->HQperiod)
encoder_info.frame_info.qp = (int)(params->mqpP*(float)params->qp) + params->dqpP;
else
encoder_info.frame_info.qp = params->qp;
} else {
if (encoder_info.frame_info.frame_num % sub_gop) {
if (params->dyadic_coding){
if (b_level == 0)
encoder_info.frame_info.qp = (int)(params->mqpB0*(float)params->qp) + params->dqpB0;
else if (b_level == 1)
encoder_info.frame_info.qp = (int)(params->mqpB1*(float)params->qp) + params->dqpB1;
else if (b_level == 2)
encoder_info.frame_info.qp = (int)(params->mqpB2*(float)params->qp) + params->dqpB2;
else if (b_level == 3)
encoder_info.frame_info.qp = (int)(params->mqpB3*(float)params->qp) + params->dqpB3;
else
encoder_info.frame_info.qp = (int)(params->mqpB*(float)params->qp) + params->dqpB;
}
else {
encoder_info.frame_info.qp = (int)(params->mqpB*(float)params->qp) + params->dqpB;
}
} else {
if (encoder_info.frame_info.frame_num % params->HQperiod) {
encoder_info.frame_info.qp = (int)(params->mqpP*(float)params->qp) + params->dqpP;
} else
encoder_info.frame_info.qp = params->qp;
}
}
encoder_info.frame_info.qp = clip(encoder_info.frame_info.qp, 0, MAX_QP);
encoder_info.frame_info.num_ref = encoder_info.frame_info.frame_type == I_FRAME ? 0 : min(num_encoded_frames,params->max_num_ref);
encoder_info.frame_info.interp_ref = 0;
if (encoder_info.frame_info.num_ref > 0) {
if (params->num_reorder_pics > 0) {
if (params->dyadic_coding) {
/* if we have a P frame then use the previous P frame as a reference */
if ((num_encoded_frames-1) % sub_gop == 0) {
if (num_encoded_frames==1)
encoder_info.frame_info.ref_array[0] = 0;
else
encoder_info.frame_info.ref_array[0] = sub_gop-1;
if (encoder_info.frame_info.num_ref>1 )
encoder_info.frame_info.ref_array[1] = min(MAX_REF_FRAMES-1,min(num_encoded_frames-1,2*sub_gop-1));
for (r=2;r<encoder_info.frame_info.num_ref;r++){
encoder_info.frame_info.ref_array[r] = r-2;
}
} else if (encoder_info.frame_info.num_ref>0){
int display_phase = (encoder_info.frame_info.frame_num-1) % sub_gop;
int ref_offset=sub_gop>>(b_level+1);
if (b_level >= min_interp_depth && params->interp_ref == 1) {
// Need to add another reference if we are at the beginning
if (encoder_info.frame_info.num_ref==2) encoder_info.frame_info.num_ref++;
encoder_info.frame_info.interp_ref = params->interp_ref;
encoder_info.frame_info.ref_array[1]=min(num_encoded_frames-1,coded_phase-dyadic_reorder_display_to_code[log2i(sub_gop)][display_phase-ref_offset+1]-1);
encoder_info.frame_info.ref_array[2]=min(num_encoded_frames-1,coded_phase-dyadic_reorder_display_to_code[log2i(sub_gop)][display_phase+ref_offset+1]-1);
// Interpolate these two reference frames to make a new frame
encoder_info.frame_info.ref_array[0]=-1;
// Add this interpolated frame to the reference buffer and use it as the first reference
yuv_frame_t* ref1=encoder_info.ref[encoder_info.frame_info.ref_array[1]];
yuv_frame_t* ref2=encoder_info.ref[encoder_info.frame_info.ref_array[2]];
TEMPLATE(interpolate_frames)(encoder_info.interp_frames[0], ref1, ref2, 2, 1);
TEMPLATE(pad_yuv_frame)(encoder_info.interp_frames[0]);
encoder_info.interp_frames[0]->frame_num = encoder_info.frame_info.frame_num;
/* use most recent frames for the last ref(s)*/
for (r=3;r<encoder_info.frame_info.num_ref;r++){
encoder_info.frame_info.ref_array[r] = r-3;
}
} else {
encoder_info.frame_info.ref_array[0]=min(num_encoded_frames-1,coded_phase-dyadic_reorder_display_to_code[log2i(sub_gop)][display_phase-ref_offset+1]-1);
encoder_info.frame_info.ref_array[1]=min(num_encoded_frames-1,coded_phase-dyadic_reorder_display_to_code[log2i(sub_gop)][display_phase+ref_offset+1]-1);
/* use most recent frames for the last ref(s)*/
for (r=2;r<encoder_info.frame_info.num_ref;r++){
encoder_info.frame_info.ref_array[r] = r-2;
}
}
}
} else {
/* if we have a P frame then use the previous P frame as a reference */
if ((num_encoded_frames-1) % sub_gop == 0) {
if (num_encoded_frames==1)
encoder_info.frame_info.ref_array[0] = 0;
else
encoder_info.frame_info.ref_array[0] = sub_gop-1;
if (encoder_info.frame_info.num_ref>1 )
encoder_info.frame_info.ref_array[1] = min(MAX_REF_FRAMES-1,min(num_encoded_frames-1,2*sub_gop-1));
for (r=2;r<encoder_info.frame_info.num_ref;r++){
encoder_info.frame_info.ref_array[r] = r-1;
}
} else {
if (params->interp_ref > 0 && params->interp_ref == 1) {
// Need to add another reference if we are at the beginning
if (encoder_info.frame_info.num_ref==2) encoder_info.frame_info.num_ref++;
encoder_info.frame_info.interp_ref = params->interp_ref;
// Use the last encoded frame as the first true ref
if (encoder_info.frame_info.num_ref>0) {
encoder_info.frame_info.ref_array[1] = 0;
}
/* Use the subsequent P frame as the 2nd ref */
int phase = (num_encoded_frames + sub_gop - 2) % sub_gop;
if (encoder_info.frame_info.num_ref>1) {
if (phase==0)
encoder_info.frame_info.ref_array[2] = min(sub_gop, num_encoded_frames-1);
else
encoder_info.frame_info.ref_array[2] = min(phase, num_encoded_frames-1);
}
// Interpolate these two reference frames to make a new frame
encoder_info.frame_info.ref_array[0]=-1;
// Add this interpolated frame to the reference buffer and use it as the first reference
yuv_frame_t* ref1=encoder_info.ref[encoder_info.frame_info.ref_array[1]];
yuv_frame_t* ref2=encoder_info.ref[encoder_info.frame_info.ref_array[2]];
TEMPLATE(interpolate_frames)(encoder_info.interp_frames[0], ref1, ref2, sub_gop-phase,phase!=0 ? 1 : sub_gop-phase-1);
TEMPLATE(pad_yuv_frame)(encoder_info.interp_frames[0]);
encoder_info.interp_frames[0]->frame_num = encoder_info.frame_info.frame_num;
/* Use the prior P frame as the 4th ref */
if (encoder_info.frame_info.num_ref>2) {
encoder_info.frame_info.ref_array[3] = min(phase ? phase + sub_gop : 2*sub_gop, num_encoded_frames-1);
}
/* use most recent frames for the last ref(s)*/
for (r=4;r<encoder_info.frame_info.num_ref;r++){
encoder_info.frame_info.ref_array[r] = r-4+1;
}
} else {
// Use the last encoded frame as the first ref
if (encoder_info.frame_info.num_ref>0) {
encoder_info.frame_info.ref_array[0] = 0;
}
/* Use the subsequent P frame as the 2nd ref */
int phase = (num_encoded_frames + sub_gop - 2) % sub_gop;
if (encoder_info.frame_info.num_ref>1) {
if (phase==0)
encoder_info.frame_info.ref_array[1] = min(sub_gop, num_encoded_frames-1);
else
encoder_info.frame_info.ref_array[1] = min(phase, num_encoded_frames-1);
}
/* Use the prior P frame as the 3rd ref */
if (encoder_info.frame_info.num_ref>2) {
encoder_info.frame_info.ref_array[2] = min(phase ? phase + sub_gop : 2*sub_gop, num_encoded_frames-1);
}
/* use most recent frames for the last ref(s)*/
for (r=3;r<encoder_info.frame_info.num_ref;r++){
encoder_info.frame_info.ref_array[r] = r-3+1;
}
}
}
}
if (encoder_info.params->num_reorder_pics == 2 && encoder_info.frame_info.frame_type == B_FRAME && b_level == 0) {
int off = encoder_info.params->interp_ref == 1 ? 1 : 0;
int tmp = encoder_info.frame_info.ref_array[0 + off];
encoder_info.frame_info.ref_array[0 + off] = encoder_info.frame_info.ref_array[1 + off];
encoder_info.frame_info.ref_array[1 + off] = tmp;
}
} else {
if (encoder_info.frame_info.num_ref>=1){
/* If num_ref==1 always use most recent frame */
encoder_info.frame_info.ref_array[0] = last_PorI_frame;
}
if (encoder_info.frame_info.num_ref==2){
/* If num_ref==2 use most recent LQ frame and most recent HQ frame */
r1 = ((num_encoded_frames + params->HQperiod - 2) % params->HQperiod) + 1;
encoder_info.frame_info.ref_array[1] = r1;
}
else if (encoder_info.frame_info.num_ref==3){
r1 = ((num_encoded_frames + params->HQperiod - 2) % params->HQperiod) + 1;
r2 = r1==1 ? 2 : 1;
encoder_info.frame_info.ref_array[1] = r1;
encoder_info.frame_info.ref_array[2] = r2;
}
else if (encoder_info.frame_info.num_ref==4){
r1 = ((num_encoded_frames + params->HQperiod - 2) % params->HQperiod) + 1;
r2 = r1==1 ? 2 : 1;
r3 = r2+1;
if (r3==r1) r3 += 1;
encoder_info.frame_info.ref_array[1] = r1;
encoder_info.frame_info.ref_array[2] = r2;
encoder_info.frame_info.ref_array[3] = r3;
}
else{
for (r=1;r<encoder_info.frame_info.num_ref;r++){
encoder_info.frame_info.ref_array[r] = r;
}
}
}
}
int main(int argc, char **argv)
{
FILE *infile, *strfile, *reconfile;
uint32_t input_file_size; //TODO: Support file size values larger than 32 bits
yuv_frame_t orig,ref[MAX_REF_FRAMES];
yuv_frame_t rec[MAX_REORDER_BUFFER];
int rec_available[MAX_REORDER_BUFFER] = {0};
int last_frame_output=-1;
int num_encoded_frames,num_bits,start_bits,end_bits;
int sub_gop=1;
int rec_buffer_idx;
int frame_num,frame_num0,k,r;
int frame_offset;
int ysize,csize,frame_size;
int width,height,input_stride_y,input_stride_c;
uint32_t acc_num_bits;
snrvals psnr;
snrvals accsnr;
double bit_rate_in_kbps;
enc_params *params;
encoder_info_t encoder_info;
init_use_simd();
/* Read commands from command line and from configuration file(s) */
if (argc < 3)
{
fprintf(stdout,"usage: %s <parameters>\n",argv[0]);
fatalerror("");
}
params = parse_config_params(argc, argv);
if (params == NULL)
{
fatalerror("Error while reading encoder paramaters.");
}
check_parameters(params);
/* Open files */
if (!(infile = fopen(params->infilestr,"rb")))
{
fatalerror("Could not open in-file for reading.");
}
if (!(strfile = fopen(params->outfilestr,"wb")))
{
fatalerror("Could not open out-file for writing.");
}
reconfile = NULL;
if (params->reconfilestr && !(reconfile = fopen(params->reconfilestr,"wb")))
{
fatalerror("Could not open recon-file for reading.");
}
fseek(infile, 0, SEEK_END);
input_file_size = ftell(infile);
fseek(infile, 0, SEEK_SET);
accsnr.y = 0;
accsnr.u = 0;
accsnr.v = 0;
acc_num_bits = 0;
height = params->height;
width = params->width;
input_stride_y = width;
input_stride_c = width/2;
ysize = height * width;
csize = ysize / 4;
frame_size = ysize + 2*csize;
/* Create frames*/
create_yuv_frame(&orig,width,height,0,0,0,0);
for (r=0;r<MAX_REORDER_BUFFER;r++){
create_yuv_frame(&rec[r],width,height,0,0,0,0);
}
for (r=0;r<MAX_REF_FRAMES;r++){ //TODO: Use Long-term frame instead of a large sliding window
create_yuv_frame(&ref[r],width,height,PADDING_Y,PADDING_Y,PADDING_Y/2,PADDING_Y/2);
}
/* Initialize main bit stream */
stream_t stream;
stream.bitstream = (uint8_t *)malloc(MAX_BUFFER_SIZE * sizeof(uint8_t));
stream.bitbuf = 0;
stream.bitrest = 32;
stream.bytepos = 0;
stream.bytesize = MAX_BUFFER_SIZE;
/* Configure encoder */
encoder_info.params = params;
encoder_info.orig = &orig;
for (r=0;r<MAX_REF_FRAMES;r++){
encoder_info.ref[r] = &ref[r];
}
encoder_info.stream = &stream;
encoder_info.width = width;
encoder_info.height = height;
encoder_info.deblock_data = (deblock_data_t *)malloc((height/MIN_PB_SIZE) * (width/MIN_PB_SIZE) * sizeof(deblock_data_t));
/* Write sequence header */ //TODO: Separate function for sequence header
start_bits = get_bit_pos(&stream);
putbits(16,width,&stream);
putbits(16,height,&stream);
putbits(1,params->enable_pb_split,&stream);
putbits(1,params->enable_tb_split,&stream);
putbits(2,params->max_num_ref-1,&stream); //TODO: Support more than 4 reference frames
putbits(4,params->num_reorder_pics,&stream);// Max 15 reordered pictures
putbits(2,params->max_delta_qp,&stream);
putbits(1,params->deblocking,&stream);
putbits(1,params->clpf,&stream);
putbits(1,params->use_block_contexts,&stream);
putbits(1,params->enable_bipred,&stream);
end_bits = get_bit_pos(&stream);
num_bits = end_bits-start_bits;
acc_num_bits += num_bits;
printf("SH: %4d bits\n",num_bits);
/* Start encoding sequence */
num_encoded_frames = 0;
sub_gop = max(1,params->num_reorder_pics+1);
for (frame_num0 = params->skip; frame_num0 < (params->skip + params->num_frames) && (frame_num0+sub_gop)*frame_size <= input_file_size; frame_num0+=sub_gop)
{
for (k=0; k<sub_gop; k++) {
int r,r0,r1,r2,r3;
/* Initialize frame info */
frame_offset = reorder_frame_offset(k,sub_gop);
frame_num = frame_num0 + frame_offset;
// If there is an initial I frame and reordering need to jump to the next P frame
if (frame_num<params->skip) continue;
encoder_info.frame_info.frame_num = frame_num - params->skip;
rec_buffer_idx = encoder_info.frame_info.frame_num%MAX_REORDER_BUFFER;
encoder_info.rec = &rec[rec_buffer_idx];
encoder_info.rec->frame_num = encoder_info.frame_info.frame_num;
if (params->num_reorder_pics==0) {
if (params->intra_period > 0)
encoder_info.frame_info.frame_type = ((num_encoded_frames%params->intra_period) == 0 ? I_FRAME : P_FRAME);
else
encoder_info.frame_info.frame_type = (num_encoded_frames == 0 ? I_FRAME : P_FRAME);
} else {
if (params->intra_period > 0)
encoder_info.frame_info.frame_type = ((encoder_info.frame_info.frame_num%params->intra_period) == 0 ? I_FRAME :
((encoder_info.frame_info.frame_num%sub_gop)==0 ? P_FRAME : B_FRAME));
else
encoder_info.frame_info.frame_type = (encoder_info.frame_info.frame_num == 0 ? I_FRAME :
((encoder_info.frame_info.frame_num%sub_gop)==0 ? P_FRAME : B_FRAME));
}
int coded_phase = (num_encoded_frames + sub_gop - 2) % sub_gop + 1;
int b_level = log2i(coded_phase);
if (encoder_info.frame_info.frame_type == I_FRAME){
encoder_info.frame_info.qp = params->qp + params->dqpI;
}
else if (params->num_reorder_pics==0) {
if (num_encoded_frames % params->HQperiod)
encoder_info.frame_info.qp = (int)(params->mqpP*(float)params->qp) + params->dqpP;
else
encoder_info.frame_info.qp = params->qp;
} else {
if (encoder_info.frame_info.frame_num % sub_gop){
float mqpB = params->mqpB;
#if DYADIC_CODING
mqpB = 1.0+(b_level+1)*((mqpB-1.0)/2.0);
#endif
encoder_info.frame_info.qp = (int)(mqpB*(float)params->qp) + params->dqpB;
} else
encoder_info.frame_info.qp = params->qp;
}
encoder_info.frame_info.num_ref = min(num_encoded_frames,params->max_num_ref);
if (params->num_reorder_pics > 0) {
#if DYADIC_CODING
/* if we have a P frame then use the previous P frame as a reference */
if ((num_encoded_frames-1) % sub_gop == 0) {
if (num_encoded_frames==1)
encoder_info.frame_info.ref_array[0] = 0;
else
encoder_info.frame_info.ref_array[0] = sub_gop-1;
if (encoder_info.frame_info.num_ref>1 )
encoder_info.frame_info.ref_array[1] = min(MAX_REF_FRAMES-1,min(num_encoded_frames-1,2*sub_gop-1));
for (r=2;r<encoder_info.frame_info.num_ref;r++){
encoder_info.frame_info.ref_array[r] = r-1;
}
} else {
int display_phase = (encoder_info.frame_info.frame_num-1) % sub_gop;
int ref_offset=sub_gop>>(b_level+1);
encoder_info.frame_info.ref_array[0]=min(num_encoded_frames-1,coded_phase-dyadic_reorder_display_to_code[log2i(sub_gop)][display_phase-ref_offset+1]-1);
encoder_info.frame_info.ref_array[1]=min(num_encoded_frames-1,coded_phase-dyadic_reorder_display_to_code[log2i(sub_gop)][display_phase+ref_offset+1]-1);
/* use most recent frames for the last ref(s)*/
for (r=2;r<encoder_info.frame_info.num_ref;r++){
encoder_info.frame_info.ref_array[r] = r-2;
}
}
#else
/* if we have a P frame then use the previous P frame as a reference */
if ((num_encoded_frames-1) % sub_gop == 0) {
if (num_encoded_frames==1)
encoder_info.frame_info.ref_array[0] = 0;
else
encoder_info.frame_info.ref_array[0] = sub_gop-1;
if (encoder_info.frame_info.num_ref>1 )
encoder_info.frame_info.ref_array[1] = min(MAX_REF_FRAMES-1,min(num_encoded_frames-1,2*sub_gop-1));
for (r=2;r<encoder_info.frame_info.num_ref;r++){
encoder_info.frame_info.ref_array[r] = r-1;
}
} else {
// Use the last encoded frame as the first ref
if (encoder_info.frame_info.num_ref>0) {
encoder_info.frame_info.ref_array[0] = 0;
}
/* Use the subsequent P frame as the 2nd ref */
int phase = (num_encoded_frames + sub_gop - 2) % sub_gop;
if (encoder_info.frame_info.num_ref>1) {
if (phase==0)
encoder_info.frame_info.ref_array[1] = min(sub_gop, num_encoded_frames-1);
else
encoder_info.frame_info.ref_array[1] = min(phase, num_encoded_frames-1);
}
/* Use the prior P frame as the 3rd ref */
if (encoder_info.frame_info.num_ref>2) {
encoder_info.frame_info.ref_array[2] = min(phase ? phase + sub_gop : 2*sub_gop, num_encoded_frames-1);
}
/* use most recent frames for the last ref(s)*/
for (r=3;r<encoder_info.frame_info.num_ref;r++){
encoder_info.frame_info.ref_array[r] = r-3+1;
}
}
#endif
} else {
if (encoder_info.frame_info.num_ref==1){
/* If num_ref==1 always use most recent frame */
encoder_info.frame_info.ref_array[0] = 0;
}
else if (encoder_info.frame_info.num_ref==2){
/* If num_ref==2 use most recent LQ frame and most recent HQ frame */
r0 = 0;
r1 = ((num_encoded_frames + params->HQperiod - 2) % params->HQperiod) + 1;
encoder_info.frame_info.ref_array[0] = r0;
encoder_info.frame_info.ref_array[1] = r1;
}
else if (encoder_info.frame_info.num_ref==3){
r0 = 0;
r1 = ((num_encoded_frames + params->HQperiod - 2) % params->HQperiod) + 1;
r2 = r1==1 ? 2 : 1;
encoder_info.frame_info.ref_array[0] = r0;
encoder_info.frame_info.ref_array[1] = r1;
encoder_info.frame_info.ref_array[2] = r2;
}
else if (encoder_info.frame_info.num_ref==4){
r0 = 0;
r1 = ((num_encoded_frames + params->HQperiod - 2) % params->HQperiod) + 1;
r2 = r1==1 ? 2 : 1;
r3 = r2+1;
if (r3==r1) r3 += 1;
encoder_info.frame_info.ref_array[0] = r0;
encoder_info.frame_info.ref_array[1] = r1;
encoder_info.frame_info.ref_array[2] = r2;
encoder_info.frame_info.ref_array[3] = r3;
}
else{
for (r=0;r<encoder_info.frame_info.num_ref;r++){
encoder_info.frame_info.ref_array[r] = r;
}
}
}
if (params->intra_rdo){
if (encoder_info.frame_info.frame_type == I_FRAME){
encoder_info.frame_info.num_intra_modes = 10;
}
else{
encoder_info.frame_info.num_intra_modes = params->encoder_speed > 0 ? 4 : 10;
}
}
else{
encoder_info.frame_info.num_intra_modes = 4;
}
#if 0
/* To test sliding window operation */
int offsetx = 500;
int offsety = 200;
int offset_rec = encoder_info.rec->offset_y + offsety * encoder_info.rec->stride_y + offsetx;
int offset_ref = encoder_info.ref[0]->offset_y + offsety * encoder_info.ref[0]->stride_y + offsetx;
if (encoder_info.frame_info.num_ref==2){
int r0 = encoder_info.frame_info.ref_array[0];
int r1 = encoder_info.frame_info.ref_array[1];
printf("ref0=%3d ref1=%3d ",encoder_info.ref[r0]->y[offset_ref],encoder_info.ref[r1]->y[offset_ref]);
}
else{
printf("ref0=XXX ref1=XXX ");
}
#endif
/* Read input frame */
fseek(infile, frame_num*(frame_size+params->frame_headerlen)+params->file_headerlen+params->frame_headerlen, SEEK_SET);
read_yuv_frame(&orig,width,height,infile);
orig.frame_num = encoder_info.frame_info.frame_num;
/* Encode frame */
start_bits = get_bit_pos(&stream);
encode_frame(&encoder_info);
rec_available[rec_buffer_idx]=1;
end_bits = get_bit_pos(&stream);
num_bits = end_bits-start_bits;
num_encoded_frames++;
/* Compute SNR */
if (params->snrcalc){
snr_yuv(&psnr,&orig,&rec[rec_buffer_idx],height,width,input_stride_y,input_stride_c);
}
else{
psnr.y = psnr.u = psnr.v = 0.0;
}
accsnr.y += psnr.y;
accsnr.u += psnr.u;
accsnr.v += psnr.v;
acc_num_bits += num_bits;
if (encoder_info.frame_info.frame_type==I_FRAME)
fprintf(stdout,"%4d I %4d %10d %10.4f %8.4f %8.4f ",frame_num,encoder_info.frame_info.qp,num_bits,psnr.y,psnr.u,psnr.v);
else if (encoder_info.frame_info.frame_type==P_FRAME)
fprintf(stdout,"%4d P %4d %10d %10.4f %8.4f %8.4f ",frame_num,encoder_info.frame_info.qp,num_bits,psnr.y,psnr.u,psnr.v);
else
fprintf(stdout,"%4d B %4d %10d %10.4f %8.4f %8.4f ",frame_num,encoder_info.frame_info.qp,num_bits,psnr.y,psnr.u,psnr.v);
for (r=0;r<encoder_info.frame_info.num_ref;r++){
fprintf(stdout,"%3d",encoder_info.frame_info.ref_array[r]);
}
fprintf(stdout,"\n");
fflush(stdout);
/* Write compressed bits for this frame to file */
flush_bytebuf(&stream, strfile);
if (reconfile){
/* Write output frame */
rec_buffer_idx = (last_frame_output+1) % MAX_REORDER_BUFFER;
if (rec_available[rec_buffer_idx]) {
last_frame_output++;
write_yuv_frame(&rec[rec_buffer_idx],width,height,reconfile);
rec_available[rec_buffer_idx]=0;
}
}
}
}