2 * Copyright (c) 2003 Michael Niedermayer
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "libavutil/attributes.h"
27 #include "libavutil/mem.h"
34 #include "mpeg12data.h"
36 static inline void asv2_put_bits(PutBitContext *pb, int n, int v){
37 put_bits(pb, n, ff_reverse[ v << (8-n) ]);
40 static inline void asv1_put_level(PutBitContext *pb, int level){
41 unsigned int index= level + 3;
43 if(index <= 6) put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]);
45 put_bits(pb, ff_asv_level_tab[3][1], ff_asv_level_tab[3][0]);
46 put_sbits(pb, 8, level);
50 static inline void asv2_put_level(PutBitContext *pb, int level){
51 unsigned int index= level + 31;
53 if(index <= 62) put_bits(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]);
55 put_bits(pb, ff_asv2_level_tab[31][1], ff_asv2_level_tab[31][0]);
56 asv2_put_bits(pb, 8, level&0xFF);
60 static inline void asv1_encode_block(ASV1Context *a, int16_t block[64]){
64 put_bits(&a->pb, 8, (block[0] + 32)>>6);
68 const int index = ff_asv_scantab[4*i];
71 if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8;
72 if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4;
73 if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2;
74 if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1;
77 for(;nc_count; nc_count--)
78 put_bits(&a->pb, ff_asv_ccp_tab[0][1], ff_asv_ccp_tab[0][0]);
80 put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]);
82 if(ccp&8) asv1_put_level(&a->pb, block[index + 0]);
83 if(ccp&4) asv1_put_level(&a->pb, block[index + 8]);
84 if(ccp&2) asv1_put_level(&a->pb, block[index + 1]);
85 if(ccp&1) asv1_put_level(&a->pb, block[index + 9]);
90 put_bits(&a->pb, ff_asv_ccp_tab[16][1], ff_asv_ccp_tab[16][0]);
93 static inline void asv2_encode_block(ASV1Context *a, int16_t block[64]){
97 for(count=63; count>3; count--){
98 const int index = ff_asv_scantab[count];
100 if( (block[index]*a->q_intra_matrix[index] + (1<<15))>>16 )
106 asv2_put_bits(&a->pb, 4, count);
107 asv2_put_bits(&a->pb, 8, (block[0] + 32)>>6);
110 for(i=0; i<=count; i++){
111 const int index = ff_asv_scantab[4*i];
114 if( (block[index + 0] = (block[index + 0]*a->q_intra_matrix[index + 0] + (1<<15))>>16) ) ccp |= 8;
115 if( (block[index + 8] = (block[index + 8]*a->q_intra_matrix[index + 8] + (1<<15))>>16) ) ccp |= 4;
116 if( (block[index + 1] = (block[index + 1]*a->q_intra_matrix[index + 1] + (1<<15))>>16) ) ccp |= 2;
117 if( (block[index + 9] = (block[index + 9]*a->q_intra_matrix[index + 9] + (1<<15))>>16) ) ccp |= 1;
119 av_assert2(i || ccp<8);
120 if(i) put_bits(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);
121 else put_bits(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]);
124 if(ccp&8) asv2_put_level(&a->pb, block[index + 0]);
125 if(ccp&4) asv2_put_level(&a->pb, block[index + 8]);
126 if(ccp&2) asv2_put_level(&a->pb, block[index + 1]);
127 if(ccp&1) asv2_put_level(&a->pb, block[index + 9]);
132 #define MAX_MB_SIZE (30*16*16*3/2/8)
134 static inline int encode_mb(ASV1Context *a, int16_t block[6][64]){
137 if (a->pb.buf_end - a->pb.buf - (put_bits_count(&a->pb)>>3) < MAX_MB_SIZE) {
138 av_log(a->avctx, AV_LOG_ERROR, "encoded frame too large\n");
142 if(a->avctx->codec_id == AV_CODEC_ID_ASV1){
144 asv1_encode_block(a, block[i]);
147 asv2_encode_block(a, block[i]);
152 static inline void dct_get(ASV1Context *a, const AVFrame *frame,
155 int16_t (*block)[64]= a->block;
156 int linesize = frame->linesize[0];
159 uint8_t *ptr_y = frame->data[0] + (mb_y * 16* linesize ) + mb_x * 16;
160 uint8_t *ptr_cb = frame->data[1] + (mb_y * 8 * frame->linesize[1]) + mb_x * 8;
161 uint8_t *ptr_cr = frame->data[2] + (mb_y * 8 * frame->linesize[2]) + mb_x * 8;
163 a->pdsp.get_pixels(block[0], ptr_y, linesize);
164 a->pdsp.get_pixels(block[1], ptr_y + 8, linesize);
165 a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize, linesize);
166 a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize);
168 a->fdsp.fdct(block[i]);
170 if(!(a->avctx->flags&CODEC_FLAG_GRAY)){
171 a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]);
172 a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]);
174 a->fdsp.fdct(block[i]);
178 static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
179 const AVFrame *pict, int *got_packet)
181 ASV1Context * const a = avctx->priv_data;
185 if (pict->width % 16 || pict->height % 16) {
186 AVFrame *clone = av_frame_alloc();
190 return AVERROR(ENOMEM);
191 clone->format = pict->format;
192 clone->width = FFALIGN(pict->width, 16);
193 clone->height = FFALIGN(pict->height, 16);
194 ret = av_frame_get_buffer(clone, 32);
196 av_frame_free(&clone);
200 ret = av_frame_copy(clone, pict);
202 av_frame_free(&clone);
206 for (i = 0; i<3; i++) {
208 int w = FF_CEIL_RSHIFT(pict->width, !!i);
209 int h = FF_CEIL_RSHIFT(pict->height, !!i);
210 int w2 = FF_CEIL_RSHIFT(clone->width, !!i);
211 int h2 = FF_CEIL_RSHIFT(clone->height, !!i);
214 clone->data[i][x + y*clone->linesize[i]] =
215 clone->data[i][w - 1 + y*clone->linesize[i]];
218 clone->data[i][x + y*clone->linesize[i]] =
219 clone->data[i][x + (h-1)*clone->linesize[i]];
221 ret = encode_frame(avctx, pkt, clone, got_packet);
223 av_frame_free(&clone);
227 if ((ret = ff_alloc_packet2(avctx, pkt, a->mb_height*a->mb_width*MAX_MB_SIZE +
228 FF_MIN_BUFFER_SIZE)) < 0)
231 init_put_bits(&a->pb, pkt->data, pkt->size);
233 for(mb_y=0; mb_y<a->mb_height2; mb_y++){
234 for(mb_x=0; mb_x<a->mb_width2; mb_x++){
235 dct_get(a, pict, mb_x, mb_y);
236 encode_mb(a, a->block);
240 if(a->mb_width2 != a->mb_width){
242 for(mb_y=0; mb_y<a->mb_height2; mb_y++){
243 dct_get(a, pict, mb_x, mb_y);
244 encode_mb(a, a->block);
248 if(a->mb_height2 != a->mb_height){
250 for(mb_x=0; mb_x<a->mb_width; mb_x++){
251 dct_get(a, pict, mb_x, mb_y);
252 encode_mb(a, a->block);
257 avpriv_align_put_bits(&a->pb);
258 while(put_bits_count(&a->pb)&31)
259 put_bits(&a->pb, 8, 0);
261 size= put_bits_count(&a->pb)/32;
263 if(avctx->codec_id == AV_CODEC_ID_ASV1)
264 a->bbdsp.bswap_buf((uint32_t *) pkt->data,
265 (uint32_t *) pkt->data, size);
268 for(i=0; i<4*size; i++)
269 pkt->data[i] = ff_reverse[pkt->data[i]];
273 pkt->flags |= AV_PKT_FLAG_KEY;
279 static av_cold int encode_init(AVCodecContext *avctx){
280 ASV1Context * const a = avctx->priv_data;
282 const int scale= avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
284 ff_asv_common_init(avctx);
285 ff_fdctdsp_init(&a->fdsp, avctx);
286 ff_pixblockdsp_init(&a->pdsp, avctx);
288 if(avctx->global_quality <= 0) avctx->global_quality= 4*FF_QUALITY_SCALE;
290 a->inv_qscale= (32*scale*FF_QUALITY_SCALE + avctx->global_quality/2) / avctx->global_quality;
292 avctx->extradata= av_mallocz(8);
293 avctx->extradata_size=8;
294 ((uint32_t*)avctx->extradata)[0]= av_le2ne32(a->inv_qscale);
295 ((uint32_t*)avctx->extradata)[1]= av_le2ne32(AV_RL32("ASUS"));
298 int q= 32*scale*ff_mpeg1_default_intra_matrix[i];
299 a->q_intra_matrix[i]= ((a->inv_qscale<<16) + q/2) / q;
305 #if CONFIG_ASV1_ENCODER
306 AVCodec ff_asv1_encoder = {
308 .long_name = NULL_IF_CONFIG_SMALL("ASUS V1"),
309 .type = AVMEDIA_TYPE_VIDEO,
310 .id = AV_CODEC_ID_ASV1,
311 .priv_data_size = sizeof(ASV1Context),
313 .encode2 = encode_frame,
314 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P,
319 #if CONFIG_ASV2_ENCODER
320 AVCodec ff_asv2_encoder = {
322 .long_name = NULL_IF_CONFIG_SMALL("ASUS V2"),
323 .type = AVMEDIA_TYPE_VIDEO,
324 .id = AV_CODEC_ID_ASV2,
325 .priv_data_size = sizeof(ASV1Context),
327 .encode2 = encode_frame,
328 .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P,