42 9,10,11,12,13,14,15,16,
79 for(run=0; run<64; run++){
82 int alevel=
FFABS(level);
89 if (code < 111 /* rl->n */) {
137 #if FF_API_MPEGVIDEO_GLOBAL_OPTS
138 if (avctx->
flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE)
140 if (avctx->
flags & CODEC_FLAG_SVCD_SCAN_OFFSET)
164 else avctx->
level = 2;
167 av_log(avctx,
AV_LOG_ERROR,
"Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n");
171 else if(avctx->
width <= 1440) avctx->
level = 6;
172 else avctx->
level = 4;
177 av_log(avctx,
AV_LOG_ERROR,
"Drop frame time code only allowed with 1001/30000 fps\n");
194 unsigned int vbv_buffer_size;
198 float best_aspect_error= 1E10;
200 int constraint_parameter_flag;
202 if(aspect_ratio==0.0) aspect_ratio= 1.0;
214 float error= aspect_ratio;
222 if(error < best_aspect_error){
223 best_aspect_error= error;
243 vbv_buffer_size = (( 20 * s->
bit_rate) / (1151929 / 2)) * 8 * 1024;
244 vbv_buffer_size= (vbv_buffer_size + 16383) / 16384;
250 constraint_parameter_flag=
254 framerate.
num <= framerate.
den*30 &&
256 vbv_buffer_size <= 20 &&
260 put_bits(&s->
pb, 1, constraint_parameter_flag);
290 fps = (framerate.
num + framerate.
den/2)/ framerate.
den;
296 int d = time_code / 17982;
297 int m = time_code % 17982;
299 time_code += 18 * d + 2 * ((m - 2) / 1798);
301 put_bits(&s->
pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
302 put_bits(&s->
pb, 6, (uint32_t)((time_code / (fps * 60)) % 60));
304 put_bits(&s->
pb, 6, (uint32_t)((time_code / fps) % 60));
305 put_bits(&s->
pb, 6, (uint32_t)((time_code % fps)));
431 int has_mv,
int field_motion)
443 int motion_x,
int motion_y,
447 const int mb_x = s->
mb_x;
448 const int mb_y = s->
mb_y;
453 for(i=0;i<mb_block_count;i++) {
455 cbp |= 1 << (mb_block_count - 1 - i);
504 if ((motion_x|motion_y) == 0) {
653 for(i=0;i<mb_block_count;i++) {
654 if (cbp & (1 << (mb_block_count - 1 - i))) {
681 int code, sign,
bits;
682 int bit_size = f_or_b_code - 1;
683 int range = 1 << bit_size;
689 code = (val >> bit_size) + 1;
690 bits = val & (range - 1);
695 code = (val >> bit_size) + 1;
696 bits = val & (range - 1);
700 assert(code > 0 && code <= 16);
739 for(i=-255; i<256; i++)
747 index = av_log2(2*adiff);
758 for(f_code=1; f_code<=
MAX_FCODE; f_code++){
764 int val, bit_size, code;
766 bit_size = f_code - 1;
772 code = (val >> bit_size) + 1;
785 for(f_code=
MAX_FCODE; f_code>0; f_code--){
786 for(mv=-(8<<f_code); mv<(8<<f_code); mv++){
813 if(((
unsigned) (diff+255)) >= 511){
817 index= av_log2_16bit(-2*diff);
820 index= av_log2_16bit(2*diff);
822 if (component == 0) {
834 if (component == 0) {
852 int alevel,
level, last_non_zero, dc, diff, i, j,
run, last_index, sign;
860 component = (n <= 3 ? 0 : (n&1) + 1);
862 diff = dc - s->
last_dc[component];
872 if (abs(level) == 1) {
873 code = ((uint32_t)level >> 31);
884 last_non_zero = i - 1;
886 for(;i<=last_index;i++) {
892 run = i - last_non_zero - 1;
901 put_bits(&s->
pb, table_vlc[code][1]+1, (table_vlc[code][0]<<1) + sign);
904 put_bits(&s->
pb, table_vlc[111][1], table_vlc[111][0]);
925 put_bits(&s->
pb, table_vlc[112][1], table_vlc[112][0]);
928 #define OFFSET(x) offsetof(MpegEncContext, x)
929 #define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
931 { "intra_vlc", "Use MPEG-2 intra VLC table.", OFFSET(intra_vlc_format), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },\
932 { "drop_frame_timecode", "Timecode is in drop frame format.", OFFSET(drop_frame_timecode), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE}, \
933 { "scan_offset", "Reserve space for SVCD scan offset user data.", OFFSET(scan_offset), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },
947 #define mpeg12_class(x)\
948 static const AVClass mpeg## x ##_class = {\
949 .class_name = "mpeg" #x "video encoder",\
950 .item_name = av_default_item_name,\
951 .option = mpeg## x ##_options,\
952 .version = LIBAVUTIL_VERSION_INT,\
958 AVCodec ff_mpeg1video_encoder = {
959 .
name =
"mpeg1video",
970 .priv_class = &mpeg1_class,
974 .
name =
"mpeg2video",
985 .priv_class = &mpeg2_class,