X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmsmpeg4.c;h=c740cfa0bddfbde1d2d80bb4de00d93a8339d864;hb=921715edffbba5db8deb26b7ad3cb583ba963d03;hp=71de34ca45ab03ef959867930cf5cd0908944db5;hpb=7881793dd0b83bf96ef83c4780da6baeb255406e;p=ffmpeg diff --git a/libavcodec/msmpeg4.c b/libavcodec/msmpeg4.c index 71de34ca45a..c740cfa0bdd 100644 --- a/libavcodec/msmpeg4.c +++ b/libavcodec/msmpeg4.c @@ -5,25 +5,25 @@ * * msmpeg4v1 & v2 stuff by Michael Niedermayer * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * FFmpeg is distributed in the hope that it will be useful, + * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** - * @file libavcodec/msmpeg4.c + * @file * MSMPEG4 backend for ffmpeg encoder and decoder. */ @@ -31,6 +31,9 @@ #include "dsputil.h" #include "mpegvideo.h" #include "msmpeg4.h" +#include "libavutil/x86_cpu.h" +#include "h263.h" +#include "mpeg4video.h" /* * You can also call this codec : MPEG4 with a twist ! @@ -42,9 +45,6 @@ //#define DEBUG #define DC_VLC_BITS 9 -#define CBPY_VLC_BITS 6 -#define V1_INTRA_CBPC_VLC_BITS 6 -#define V1_INTER_CBPC_VLC_BITS 6 #define V2_INTRA_CBPC_VLC_BITS 3 #define V2_MB_TYPE_VLC_BITS 7 #define MV_VLC_BITS 9 @@ -59,16 +59,6 @@ static uint32_t v2_dc_lum_table[512][2]; static uint32_t v2_dc_chroma_table[512][2]; -static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr); -static void init_h263_dc_for_msmpeg4(void); -static inline void msmpeg4_memsetw(short *tab, int val, int n); -#if CONFIG_ENCODERS -static void msmpeg4v2_encode_motion(MpegEncContext * s, int val); -static int get_size_of_code(MpegEncContext * s, RLTable *rl, int last, int run, int level, int intra); -#endif //CONFIG_ENCODERS -static int msmpeg4v12_decode_mb(MpegEncContext *s, DCTELEM block[6][64]); -static int msmpeg4v34_decode_mb(MpegEncContext *s, DCTELEM block[6][64]); - /* vc1 externs */ extern const uint8_t wmv3_dc_scale_table[32]; @@ -84,6 +74,62 @@ static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2]; static uint8_t static_rl_table_store[NB_RL_TABLES][2][2*MAX_RUN + MAX_LEVEL + 3]; +/* This table is practically identical to the one from h263 + * except that it is inverted. */ +static av_cold void init_h263_dc_for_msmpeg4(void) +{ + int level, uni_code, uni_len; + + for(level=-256; level<256; level++){ + int size, v, l; + /* find number of bits */ + size = 0; + v = abs(level); + while (v) { + v >>= 1; + size++; + } + + if (level < 0) + l= (-level) ^ ((1 << size) - 1); + else + l= level; + + /* luminance h263 */ + uni_code= ff_mpeg4_DCtab_lum[size][0]; + uni_len = ff_mpeg4_DCtab_lum[size][1]; + uni_code ^= (1< 0) { + uni_code<<=size; uni_code|=l; + uni_len+=size; + if (size > 8){ + uni_code<<=1; uni_code|=1; + uni_len++; + } + } + v2_dc_lum_table[level+256][0]= uni_code; + v2_dc_lum_table[level+256][1]= uni_len; + + /* chrominance h263 */ + uni_code= ff_mpeg4_DCtab_chrom[size][0]; + uni_len = ff_mpeg4_DCtab_chrom[size][1]; + uni_code ^= (1< 0) { + uni_code<<=size; uni_code|=l; + uni_len+=size; + if (size > 8){ + uni_code<<=1; uni_code|=1; + uni_len++; + } + } + v2_dc_chroma_table[level+256][0]= uni_code; + v2_dc_chroma_table[level+256][1]= uni_len; + + } +} + static av_cold void common_init(MpegEncContext * s) { static int initialized=0; @@ -162,40 +208,6 @@ void ff_msmpeg4_code012(PutBitContext *pb, int n) } } -av_cold void ff_msmpeg4_encode_init(MpegEncContext *s) -{ - static int init_done=0; - int i; - - common_init(s); - if(s->msmpeg4_version>=4){ - s->min_qcoeff= -255; - s->max_qcoeff= 255; - } - - if (!init_done) { - /* init various encoding tables */ - init_done = 1; - init_mv_table(&mv_tables[0]); - init_mv_table(&mv_tables[1]); - for(i=0;imsmpeg4_version>=4){ + s->min_qcoeff= -255; + s->max_qcoeff= 255; + } + + if (!init_done) { + /* init various encoding tables */ + init_done = 1; + init_mv_table(&mv_tables[0]); + init_mv_table(&mv_tables[1]); + for(i=0;iac_stats[1][0][level][run][last]; int intra_chroma_count= s->ac_stats[1][1][level][run][last]; - if(s->pict_type==FF_I_TYPE){ + if(s->pict_type==AV_PICTURE_TYPE_I){ size += intra_luma_count *rl_length[i ][level][run][last]; chroma_size+= intra_chroma_count*rl_length[i+3][level][run][last]; }else{ @@ -287,7 +333,7 @@ static void find_best_tables(MpegEncContext * s) // printf("type:%d, best:%d, qp:%d, var:%d, mcvar:%d, size:%d //\n", // s->pict_type, best, s->qscale, s->mb_var_sum, s->mc_mb_var_sum, best_size); - if(s->pict_type==FF_P_TYPE) chroma_best= best; + if(s->pict_type==AV_PICTURE_TYPE_P) chroma_best= best; memset(s->ac_stats, 0, sizeof(int)*(MAX_LEVEL+1)*(MAX_RUN+1)*2*2*2); @@ -296,7 +342,7 @@ static void find_best_tables(MpegEncContext * s) if(s->pict_type != s->last_non_b_pict_type){ s->rl_table_index= 2; - if(s->pict_type==FF_I_TYPE) + if(s->pict_type==AV_PICTURE_TYPE_I) s->rl_chroma_table_index= 1; else s->rl_chroma_table_index= 2; @@ -323,10 +369,10 @@ void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number) s->use_skip_mb_code = 1; /* only if P frame */ s->per_mb_rl_table = 0; if(s->msmpeg4_version==4) - s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE && s->pict_type==FF_P_TYPE); + s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE && s->pict_type==AV_PICTURE_TYPE_P); //printf("%d %d %d %d %d\n", s->pict_type, s->bit_rate, s->inter_intra_pred, s->width, s->height); - if (s->pict_type == FF_I_TYPE) { + if (s->pict_type == AV_PICTURE_TYPE_I) { s->slice_height= s->mb_height/1; put_bits(&s->pb, 5, 0x16 + s->mb_height/s->slice_height); @@ -458,6 +504,39 @@ void ff_msmpeg4_handle_slices(MpegEncContext *s){ } } +static void msmpeg4v2_encode_motion(MpegEncContext * s, int val) +{ + int range, bit_size, sign, code, bits; + + if (val == 0) { + /* zero vector */ + code = 0; + put_bits(&s->pb, mvtab[code][1], mvtab[code][0]); + } else { + bit_size = s->f_code - 1; + range = 1 << bit_size; + if (val <= -64) + val += 64; + else if (val >= 64) + val -= 64; + + if (val >= 0) { + sign = 0; + } else { + val = -val; + sign = 1; + } + val--; + code = (val >> bit_size) + 1; + bits = val & (range - 1); + + put_bits(&s->pb, mvtab[code][1] + 1, (mvtab[code][0] << 1) | sign); + if (bit_size > 0) { + put_bits(&s->pb, bit_size, bits); + } + } +} + void msmpeg4_encode_mb(MpegEncContext * s, DCTELEM block[6][64], int motion_x, int motion_y) @@ -495,8 +574,8 @@ void msmpeg4_encode_mb(MpegEncContext * s, else coded_cbp= cbp; put_bits(&s->pb, - cbpy_tab[coded_cbp>>2][1], - cbpy_tab[coded_cbp>>2][0]); + ff_h263_cbpy_tab[coded_cbp>>2][1], + ff_h263_cbpy_tab[coded_cbp>>2][0]); s->misc_bits += get_bits_diff(s); @@ -538,13 +617,9 @@ void msmpeg4_encode_mb(MpegEncContext * s, } coded_cbp |= val << (5 - i); } -#if 0 - if (coded_cbp) - printf("cbp=%x %x\n", cbp, coded_cbp); -#endif if(s->msmpeg4_version<=2){ - if (s->pict_type == FF_I_TYPE) { + if (s->pict_type == AV_PICTURE_TYPE_I) { put_bits(&s->pb, v2_intra_cbpc[cbp&3][1], v2_intra_cbpc[cbp&3][0]); } else { @@ -556,10 +631,10 @@ void msmpeg4_encode_mb(MpegEncContext * s, } put_bits(&s->pb, 1, 0); /* no AC prediction yet */ put_bits(&s->pb, - cbpy_tab[cbp>>2][1], - cbpy_tab[cbp>>2][0]); + ff_h263_cbpy_tab[cbp>>2][1], + ff_h263_cbpy_tab[cbp>>2][0]); }else{ - if (s->pict_type == FF_I_TYPE) { + if (s->pict_type == AV_PICTURE_TYPE_I) { put_bits(&s->pb, ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]); } else { @@ -647,7 +722,7 @@ static inline int msmpeg4_pred_dc(MpegEncContext * s, int n, necessitate to modify mpegvideo.c. The problem comes from the fact they decided to store the quantized DC (which would lead to problems if Q could vary !) */ -#if ARCH_X86 && !defined PIC +#if ARCH_X86 && HAVE_7REGS && HAVE_EBX_AVAILABLE __asm__ volatile( "movl %3, %%eax \n\t" "shrl $1, %%eax \n\t" @@ -771,22 +846,14 @@ static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr int pred, extquant; int extrabits = 0; - if(s->msmpeg4_version==1){ - int32_t *dc_val; - pred = msmpeg4v1_pred_dc(s, n, &dc_val); - - /* update predictor */ - *dc_val= level; - }else{ - int16_t *dc_val; - pred = msmpeg4_pred_dc(s, n, &dc_val, dir_ptr); + int16_t *dc_val; + pred = msmpeg4_pred_dc(s, n, &dc_val, dir_ptr); - /* update predictor */ - if (n < 4) { - *dc_val = level * s->y_dc_scale; - } else { - *dc_val = level * s->c_dc_scale; - } + /* update predictor */ + if (n < 4) { + *dc_val = level * s->y_dc_scale; + } else { + *dc_val = level * s->c_dc_scale; } /* do the prediction */ @@ -906,10 +973,9 @@ void ff_msmpeg4_encode_block(MpegEncContext * s, DCTELEM * block, int n) if(level<=MAX_LEVEL && run<=MAX_RUN){ s->ac_stats[s->mb_intra][n>3][level][run][last]++; } -#if 0 -else - s->ac_stats[s->mb_intra][n>3][40][63][0]++; //esc3 like -#endif + + s->ac_stats[s->mb_intra][n > 3][40][63][0]++; //esc3 like + code = get_rl_index(rl, last, run, level); put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]); if (code == rl->n) { @@ -979,76 +1045,229 @@ else VLC ff_mb_non_intra_vlc[4]; static VLC v2_dc_lum_vlc; static VLC v2_dc_chroma_vlc; -static VLC cbpy_vlc; static VLC v2_intra_cbpc_vlc; static VLC v2_mb_type_vlc; static VLC v2_mv_vlc; -static VLC v1_intra_cbpc_vlc; -static VLC v1_inter_cbpc_vlc; VLC ff_inter_intra_vlc; -/* This table is practically identical to the one from h263 - * except that it is inverted. */ -static av_cold void init_h263_dc_for_msmpeg4(void) +/* This is identical to h263 except that its range is multiplied by 2. */ +static int msmpeg4v2_decode_motion(MpegEncContext * s, int pred, int f_code) { - int level, uni_code, uni_len; - - for(level=-256; level<256; level++){ - int size, v, l; - /* find number of bits */ - size = 0; - v = abs(level); - while (v) { - v >>= 1; - size++; - } - - if (level < 0) - l= (-level) ^ ((1 << size) - 1); - else - l= level; - - /* luminance h263 */ - uni_code= DCtab_lum[size][0]; - uni_len = DCtab_lum[size][1]; - uni_code ^= (1< 0) { - uni_code<<=size; uni_code|=l; - uni_len+=size; - if (size > 8){ - uni_code<<=1; uni_code|=1; - uni_len++; - } - } - v2_dc_lum_table[level+256][0]= uni_code; - v2_dc_lum_table[level+256][1]= uni_len; + code = get_vlc2(&s->gb, v2_mv_vlc.table, V2_MV_VLC_BITS, 2); +// printf("MV code %d at %d %d pred: %d\n", code, s->mb_x,s->mb_y, pred); + if (code < 0) + return 0xffff; - /* chrominance h263 */ - uni_code= DCtab_chrom[size][0]; - uni_len = DCtab_chrom[size][1]; - uni_code ^= (1<gb); + shift = f_code - 1; + val = code; + if (shift) { + val = (val - 1) << shift; + val |= get_bits(&s->gb, shift); + val++; + } + if (sign) + val = -val; - if (size > 0) { - uni_code<<=size; uni_code|=l; - uni_len+=size; - if (size > 8){ - uni_code<<=1; uni_code|=1; - uni_len++; - } - } - v2_dc_chroma_table[level+256][0]= uni_code; - v2_dc_chroma_table[level+256][1]= uni_len; + val += pred; + if (val <= -64) + val += 64; + else if (val >= 64) + val -= 64; - } + return val; } -/* init all vlc decoding tables */ -av_cold int ff_msmpeg4_decode_init(MpegEncContext *s) +static int msmpeg4v12_decode_mb(MpegEncContext *s, DCTELEM block[6][64]) { - static int done = 0; - int i; - MVTable *mv; + int cbp, code, i; + + if (s->pict_type == AV_PICTURE_TYPE_P) { + if (s->use_skip_mb_code) { + if (get_bits1(&s->gb)) { + /* skip mb */ + s->mb_intra = 0; + for(i=0;i<6;i++) + s->block_last_index[i] = -1; + s->mv_dir = MV_DIR_FORWARD; + s->mv_type = MV_TYPE_16X16; + s->mv[0][0][0] = 0; + s->mv[0][0][1] = 0; + s->mb_skipped = 1; + return 0; + } + } + + if(s->msmpeg4_version==2) + code = get_vlc2(&s->gb, v2_mb_type_vlc.table, V2_MB_TYPE_VLC_BITS, 1); + else + code = get_vlc2(&s->gb, ff_h263_inter_MCBPC_vlc.table, INTER_MCBPC_VLC_BITS, 2); + if(code<0 || code>7){ + av_log(s->avctx, AV_LOG_ERROR, "cbpc %d invalid at %d %d\n", code, s->mb_x, s->mb_y); + return -1; + } + + s->mb_intra = code >>2; + + cbp = code & 0x3; + } else { + s->mb_intra = 1; + if(s->msmpeg4_version==2) + cbp= get_vlc2(&s->gb, v2_intra_cbpc_vlc.table, V2_INTRA_CBPC_VLC_BITS, 1); + else + cbp= get_vlc2(&s->gb, ff_h263_intra_MCBPC_vlc.table, INTRA_MCBPC_VLC_BITS, 1); + if(cbp<0 || cbp>3){ + av_log(s->avctx, AV_LOG_ERROR, "cbpc %d invalid at %d %d\n", cbp, s->mb_x, s->mb_y); + return -1; + } + } + + if (!s->mb_intra) { + int mx, my, cbpy; + + cbpy= get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1); + if(cbpy<0){ + av_log(s->avctx, AV_LOG_ERROR, "cbpy %d invalid at %d %d\n", cbp, s->mb_x, s->mb_y); + return -1; + } + + cbp|= cbpy<<2; + if(s->msmpeg4_version==1 || (cbp&3) != 3) cbp^= 0x3C; + + h263_pred_motion(s, 0, 0, &mx, &my); + mx= msmpeg4v2_decode_motion(s, mx, 1); + my= msmpeg4v2_decode_motion(s, my, 1); + + s->mv_dir = MV_DIR_FORWARD; + s->mv_type = MV_TYPE_16X16; + s->mv[0][0][0] = mx; + s->mv[0][0][1] = my; + } else { + if(s->msmpeg4_version==2){ + s->ac_pred = get_bits1(&s->gb); + cbp|= get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1)<<2; //FIXME check errors + } else{ + s->ac_pred = 0; + cbp|= get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1)<<2; //FIXME check errors + if(s->pict_type==AV_PICTURE_TYPE_P) cbp^=0x3C; + } + } + + s->dsp.clear_blocks(s->block[0]); + for (i = 0; i < 6; i++) { + if (ff_msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0) + { + av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding block: %d x %d (%d)\n", s->mb_x, s->mb_y, i); + return -1; + } + } + return 0; +} + +static int msmpeg4v34_decode_mb(MpegEncContext *s, DCTELEM block[6][64]) +{ + int cbp, code, i; + uint8_t *coded_val; + uint32_t * const mb_type_ptr= &s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]; + + if (s->pict_type == AV_PICTURE_TYPE_P) { + if (s->use_skip_mb_code) { + if (get_bits1(&s->gb)) { + /* skip mb */ + s->mb_intra = 0; + for(i=0;i<6;i++) + s->block_last_index[i] = -1; + s->mv_dir = MV_DIR_FORWARD; + s->mv_type = MV_TYPE_16X16; + s->mv[0][0][0] = 0; + s->mv[0][0][1] = 0; + s->mb_skipped = 1; + *mb_type_ptr = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16; + + return 0; + } + } + + code = get_vlc2(&s->gb, ff_mb_non_intra_vlc[DEFAULT_INTER_INDEX].table, MB_NON_INTRA_VLC_BITS, 3); + if (code < 0) + return -1; + //s->mb_intra = (code & 0x40) ? 0 : 1; + s->mb_intra = (~code & 0x40) >> 6; + + cbp = code & 0x3f; + } else { + s->mb_intra = 1; + code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); + if (code < 0) + return -1; + /* predict coded block pattern */ + cbp = 0; + for(i=0;i<6;i++) { + int val = ((code >> (5 - i)) & 1); + if (i < 4) { + int pred = ff_msmpeg4_coded_block_pred(s, i, &coded_val); + val = val ^ pred; + *coded_val = val; + } + cbp |= val << (5 - i); + } + } + + if (!s->mb_intra) { + int mx, my; +//printf("P at %d %d\n", s->mb_x, s->mb_y); + if(s->per_mb_rl_table && cbp){ + s->rl_table_index = decode012(&s->gb); + s->rl_chroma_table_index = s->rl_table_index; + } + h263_pred_motion(s, 0, 0, &mx, &my); + if (ff_msmpeg4_decode_motion(s, &mx, &my) < 0) + return -1; + s->mv_dir = MV_DIR_FORWARD; + s->mv_type = MV_TYPE_16X16; + s->mv[0][0][0] = mx; + s->mv[0][0][1] = my; + *mb_type_ptr = MB_TYPE_L0 | MB_TYPE_16x16; + } else { +//printf("I at %d %d %d %06X\n", s->mb_x, s->mb_y, ((cbp&3)? 1 : 0) +((cbp&0x3C)? 2 : 0), show_bits(&s->gb, 24)); + s->ac_pred = get_bits1(&s->gb); + *mb_type_ptr = MB_TYPE_INTRA; + if(s->inter_intra_pred){ + s->h263_aic_dir= get_vlc2(&s->gb, ff_inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1); +// printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y); + } + if(s->per_mb_rl_table && cbp){ + s->rl_table_index = decode012(&s->gb); + s->rl_chroma_table_index = s->rl_table_index; + } + } + + s->dsp.clear_blocks(s->block[0]); + for (i = 0; i < 6; i++) { + if (ff_msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0) + { + av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding block: %d x %d (%d)\n", s->mb_x, s->mb_y, i); + return -1; + } + } + + return 0; +} + +/* init all vlc decoding tables */ +av_cold int ff_msmpeg4_decode_init(AVCodecContext *avctx) +{ + MpegEncContext *s = avctx->priv_data; + static int done = 0; + int i; + MVTable *mv; + + if (ff_h263_decode_init(avctx) < 0) + return -1; common_init(s); @@ -1094,9 +1313,6 @@ av_cold int ff_msmpeg4_decode_init(MpegEncContext *s) &v2_dc_chroma_table[0][1], 8, 4, &v2_dc_chroma_table[0][0], 8, 4, 1506); - INIT_VLC_STATIC(&cbpy_vlc, CBPY_VLC_BITS, 16, - &cbpy_tab[0][1], 2, 1, - &cbpy_tab[0][0], 2, 1, 64); INIT_VLC_STATIC(&v2_intra_cbpc_vlc, V2_INTRA_CBPC_VLC_BITS, 4, &v2_intra_cbpc[0][1], 2, 1, &v2_intra_cbpc[0][0], 2, 1, 8); @@ -1124,13 +1340,6 @@ av_cold int ff_msmpeg4_decode_init(MpegEncContext *s) &ff_msmp4_mb_i_table[0][1], 4, 2, &ff_msmp4_mb_i_table[0][0], 4, 2, 536); - INIT_VLC_STATIC(&v1_intra_cbpc_vlc, V1_INTRA_CBPC_VLC_BITS, 8, - intra_MCBPC_bits, 1, 1, - intra_MCBPC_code, 1, 1, 64); - INIT_VLC_STATIC(&v1_inter_cbpc_vlc, V1_INTER_CBPC_VLC_BITS, 25, - inter_MCBPC_bits, 1, 1, - inter_MCBPC_code, 1, 1, 104); - INIT_VLC_STATIC(&ff_inter_intra_vlc, INTER_INTRA_VLC_BITS, 4, &table_inter_intra[0][1], 2, 1, &table_inter_intra[0][0], 2, 1, 8); @@ -1162,20 +1371,8 @@ int msmpeg4_decode_picture_header(MpegEncContext * s) { int code; -#if 0 -{ -int i; -for(i=0; igb.size_in_bits; i++) - av_log(s->avctx, AV_LOG_DEBUG, "%d", get_bits1(&s->gb)); -// get_bits1(&s->gb); -av_log(s->avctx, AV_LOG_DEBUG, "END\n"); -return -1; -} -#endif - if(s->msmpeg4_version==1){ - int start_code; - start_code = (get_bits(&s->gb, 16)<<16) | get_bits(&s->gb, 16); + int start_code = get_bits_long(&s->gb, 32); if(start_code!=0x00000100){ av_log(s->avctx, AV_LOG_ERROR, "invalid startcode\n"); return -1; @@ -1185,15 +1382,15 @@ return -1; } s->pict_type = get_bits(&s->gb, 2) + 1; - if (s->pict_type != FF_I_TYPE && - s->pict_type != FF_P_TYPE){ + if (s->pict_type != AV_PICTURE_TYPE_I && + s->pict_type != AV_PICTURE_TYPE_P){ av_log(s->avctx, AV_LOG_ERROR, "invalid picture type\n"); return -1; } #if 0 { static int had_i=0; - if(s->pict_type == FF_I_TYPE) had_i=1; + if(s->pict_type == AV_PICTURE_TYPE_I) had_i=1; if(!had_i) return -1; } #endif @@ -1203,7 +1400,7 @@ return -1; return -1; } - if (s->pict_type == FF_I_TYPE) { + if (s->pict_type == AV_PICTURE_TYPE_I) { code = get_bits(&s->gb, 5); if(s->msmpeg4_version==1){ if(code==0 || code>s->mb_height){ @@ -1331,9 +1528,7 @@ int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size) /* the alt_bitstream reader could read over the end so we need to check it */ if(left>=length && leftgb, 5); + skip_bits(&s->gb, 5); /* fps */ s->bit_rate= get_bits(&s->gb, 11)*1024; if(s->msmpeg4_version>=3) s->flipflop_rounding= get_bits1(&s->gb); @@ -1356,255 +1551,63 @@ int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size) return 0; } -static inline void msmpeg4_memsetw(short *tab, int val, int n) -{ - int i; - for(i=0;ipb, mvtab[code][1], mvtab[code][0]); - } else { - bit_size = s->f_code - 1; - range = 1 << bit_size; - if (val <= -64) - val += 64; - else if (val >= 64) - val -= 64; + int level, pred; - if (val >= 0) { - sign = 0; + if(s->msmpeg4_version<=2){ + if (n < 4) { + level = get_vlc2(&s->gb, v2_dc_lum_vlc.table, DC_VLC_BITS, 3); } else { - val = -val; - sign = 1; - } - val--; - code = (val >> bit_size) + 1; - bits = val & (range - 1); - - put_bits(&s->pb, mvtab[code][1] + 1, (mvtab[code][0] << 1) | sign); - if (bit_size > 0) { - put_bits(&s->pb, bit_size, bits); - } - } -} -#endif - -/* This is identical to h263 except that its range is multiplied by 2. */ -static int msmpeg4v2_decode_motion(MpegEncContext * s, int pred, int f_code) -{ - int code, val, sign, shift; - - code = get_vlc2(&s->gb, v2_mv_vlc.table, V2_MV_VLC_BITS, 2); -// printf("MV code %d at %d %d pred: %d\n", code, s->mb_x,s->mb_y, pred); - if (code < 0) - return 0xffff; - - if (code == 0) - return pred; - sign = get_bits1(&s->gb); - shift = f_code - 1; - val = code; - if (shift) { - val = (val - 1) << shift; - val |= get_bits(&s->gb, shift); - val++; - } - if (sign) - val = -val; - - val += pred; - if (val <= -64) - val += 64; - else if (val >= 64) - val -= 64; - - return val; -} - -static int msmpeg4v12_decode_mb(MpegEncContext *s, DCTELEM block[6][64]) -{ - int cbp, code, i; - - if (s->pict_type == FF_P_TYPE) { - if (s->use_skip_mb_code) { - if (get_bits1(&s->gb)) { - /* skip mb */ - s->mb_intra = 0; - for(i=0;i<6;i++) - s->block_last_index[i] = -1; - s->mv_dir = MV_DIR_FORWARD; - s->mv_type = MV_TYPE_16X16; - s->mv[0][0][0] = 0; - s->mv[0][0][1] = 0; - s->mb_skipped = 1; - return 0; - } - } - - if(s->msmpeg4_version==2) - code = get_vlc2(&s->gb, v2_mb_type_vlc.table, V2_MB_TYPE_VLC_BITS, 1); - else - code = get_vlc2(&s->gb, v1_inter_cbpc_vlc.table, V1_INTER_CBPC_VLC_BITS, 3); - if(code<0 || code>7){ - av_log(s->avctx, AV_LOG_ERROR, "cbpc %d invalid at %d %d\n", code, s->mb_x, s->mb_y); - return -1; + level = get_vlc2(&s->gb, v2_dc_chroma_vlc.table, DC_VLC_BITS, 3); } - - s->mb_intra = code >>2; - - cbp = code & 0x3; - } else { - s->mb_intra = 1; - if(s->msmpeg4_version==2) - cbp= get_vlc2(&s->gb, v2_intra_cbpc_vlc.table, V2_INTRA_CBPC_VLC_BITS, 1); - else - cbp= get_vlc2(&s->gb, v1_intra_cbpc_vlc.table, V1_INTRA_CBPC_VLC_BITS, 1); - if(cbp<0 || cbp>3){ - av_log(s->avctx, AV_LOG_ERROR, "cbpc %d invalid at %d %d\n", cbp, s->mb_x, s->mb_y); + if (level < 0) return -1; + level-=256; + }else{ //FIXME optimize use unified tables & index + if (n < 4) { + level = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); + } else { + level = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); } - } - - if (!s->mb_intra) { - int mx, my, cbpy; - - cbpy= get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1); - if(cbpy<0){ - av_log(s->avctx, AV_LOG_ERROR, "cbpy %d invalid at %d %d\n", cbp, s->mb_x, s->mb_y); + if (level < 0){ + av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n"); return -1; } - cbp|= cbpy<<2; - if(s->msmpeg4_version==1 || (cbp&3) != 3) cbp^= 0x3C; - - h263_pred_motion(s, 0, 0, &mx, &my); - mx= msmpeg4v2_decode_motion(s, mx, 1); - my= msmpeg4v2_decode_motion(s, my, 1); - - s->mv_dir = MV_DIR_FORWARD; - s->mv_type = MV_TYPE_16X16; - s->mv[0][0][0] = mx; - s->mv[0][0][1] = my; - } else { - if(s->msmpeg4_version==2){ - s->ac_pred = get_bits1(&s->gb); - cbp|= get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1)<<2; //FIXME check errors - } else{ - s->ac_pred = 0; - cbp|= get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1)<<2; //FIXME check errors - if(s->pict_type==FF_P_TYPE) cbp^=0x3C; - } - } - - s->dsp.clear_blocks(s->block[0]); - for (i = 0; i < 6; i++) { - if (ff_msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0) - { - av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding block: %d x %d (%d)\n", s->mb_x, s->mb_y, i); - return -1; + if (level == DC_MAX) { + level = get_bits(&s->gb, 8); + if (get_bits1(&s->gb)) + level = -level; + } else if (level != 0) { + if (get_bits1(&s->gb)) + level = -level; } } - return 0; -} - -static int msmpeg4v34_decode_mb(MpegEncContext *s, DCTELEM block[6][64]) -{ - int cbp, code, i; - uint8_t *coded_val; - uint32_t * const mb_type_ptr= &s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ]; - if (s->pict_type == FF_P_TYPE) { - if (s->use_skip_mb_code) { - if (get_bits1(&s->gb)) { - /* skip mb */ - s->mb_intra = 0; - for(i=0;i<6;i++) - s->block_last_index[i] = -1; - s->mv_dir = MV_DIR_FORWARD; - s->mv_type = MV_TYPE_16X16; - s->mv[0][0][0] = 0; - s->mv[0][0][1] = 0; - s->mb_skipped = 1; - *mb_type_ptr = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16; - - return 0; - } - } - - code = get_vlc2(&s->gb, ff_mb_non_intra_vlc[DEFAULT_INTER_INDEX].table, MB_NON_INTRA_VLC_BITS, 3); - if (code < 0) - return -1; - //s->mb_intra = (code & 0x40) ? 0 : 1; - s->mb_intra = (~code & 0x40) >> 6; - - cbp = code & 0x3f; - } else { - s->mb_intra = 1; - code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); - if (code < 0) - return -1; - /* predict coded block pattern */ - cbp = 0; - for(i=0;i<6;i++) { - int val = ((code >> (5 - i)) & 1); - if (i < 4) { - int pred = ff_msmpeg4_coded_block_pred(s, i, &coded_val); - val = val ^ pred; - *coded_val = val; - } - cbp |= val << (5 - i); - } - } + if(s->msmpeg4_version==1){ + int32_t *dc_val; + pred = msmpeg4v1_pred_dc(s, n, &dc_val); + level += pred; - if (!s->mb_intra) { - int mx, my; -//printf("P at %d %d\n", s->mb_x, s->mb_y); - if(s->per_mb_rl_table && cbp){ - s->rl_table_index = decode012(&s->gb); - s->rl_chroma_table_index = s->rl_table_index; - } - h263_pred_motion(s, 0, 0, &mx, &my); - if (ff_msmpeg4_decode_motion(s, &mx, &my) < 0) - return -1; - s->mv_dir = MV_DIR_FORWARD; - s->mv_type = MV_TYPE_16X16; - s->mv[0][0][0] = mx; - s->mv[0][0][1] = my; - *mb_type_ptr = MB_TYPE_L0 | MB_TYPE_16x16; - } else { -//printf("I at %d %d %d %06X\n", s->mb_x, s->mb_y, ((cbp&3)? 1 : 0) +((cbp&0x3C)? 2 : 0), show_bits(&s->gb, 24)); - s->ac_pred = get_bits1(&s->gb); - *mb_type_ptr = MB_TYPE_INTRA; - if(s->inter_intra_pred){ - s->h263_aic_dir= get_vlc2(&s->gb, ff_inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1); -// printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y); - } - if(s->per_mb_rl_table && cbp){ - s->rl_table_index = decode012(&s->gb); - s->rl_chroma_table_index = s->rl_table_index; - } - } + /* update predictor */ + *dc_val= level; + }else{ + int16_t *dc_val; + pred = msmpeg4_pred_dc(s, n, &dc_val, dir_ptr); + level += pred; - s->dsp.clear_blocks(s->block[0]); - for (i = 0; i < 6; i++) { - if (ff_msmpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, NULL) < 0) - { - av_log(s->avctx, AV_LOG_ERROR, "\nerror while decoding block: %d x %d (%d)\n", s->mb_x, s->mb_y, i); - return -1; + /* update predictor */ + if (n < 4) { + *dc_val = level * s->y_dc_scale; + } else { + *dc_val = level * s->c_dc_scale; } } - return 0; + return level; } + //#define ERROR_DETAILS int ff_msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, int n, int coded, const uint8_t *scan_table) @@ -1703,9 +1706,7 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, if(s->qscale<8){ ll= SHOW_UBITS(re, &s->gb, 3); SKIP_BITS(re, &s->gb, 3); if(ll==0){ - if(SHOW_UBITS(re, &s->gb, 1)) av_log(s->avctx, AV_LOG_ERROR, "cool a new vlc code ,contact the ffmpeg developers and upload the file\n"); - SKIP_BITS(re, &s->gb, 1); - ll=8; + ll= 8+SHOW_UBITS(re, &s->gb, 1); SKIP_BITS(re, &s->gb, 1); } }else{ ll=2; @@ -1771,12 +1772,7 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, #endif } else { /* second escape */ -#if MIN_CACHE_BITS < 23 - LAST_SKIP_BITS(re, &s->gb, 2); - UPDATE_CACHE(re, &s->gb); -#else SKIP_BITS(re, &s->gb, 2); -#endif GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1); i+= run + rl->max_run[run>>7][level/qmul] + run_diff; //FIXME opt indexing level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1); @@ -1790,12 +1786,7 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, } } else { /* first escape */ -#if MIN_CACHE_BITS < 22 - LAST_SKIP_BITS(re, &s->gb, 1); - UPDATE_CACHE(re, &s->gb); -#else SKIP_BITS(re, &s->gb, 1); -#endif GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2, 1); i+= run; level = level + rl->max_level[run>>7][(run-1)&63] * qmul;//FIXME opt indexing @@ -1822,7 +1813,7 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, if (i > 62){ i-= 192; if(i&(~63)){ - const int left= s->gb.size_in_bits - get_bits_count(&s->gb); + const int left= get_bits_left(&s->gb); if(((i+192 == 64 && level/qmul==-1) || s->error_recognition<=1) && left>=0){ av_log(s->avctx, AV_LOG_ERROR, "ignoring overflow at %d %d\n", s->mb_x, s->mb_y); break; @@ -1853,63 +1844,6 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, DCTELEM * block, return 0; } -static int msmpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr) -{ - int level, pred; - - if(s->msmpeg4_version<=2){ - if (n < 4) { - level = get_vlc2(&s->gb, v2_dc_lum_vlc.table, DC_VLC_BITS, 3); - } else { - level = get_vlc2(&s->gb, v2_dc_chroma_vlc.table, DC_VLC_BITS, 3); - } - if (level < 0) - return -1; - level-=256; - }else{ //FIXME optimize use unified tables & index - if (n < 4) { - level = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); - } else { - level = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); - } - if (level < 0){ - av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n"); - return -1; - } - - if (level == DC_MAX) { - level = get_bits(&s->gb, 8); - if (get_bits1(&s->gb)) - level = -level; - } else if (level != 0) { - if (get_bits1(&s->gb)) - level = -level; - } - } - - if(s->msmpeg4_version==1){ - int32_t *dc_val; - pred = msmpeg4v1_pred_dc(s, n, &dc_val); - level += pred; - - /* update predictor */ - *dc_val= level; - }else{ - int16_t *dc_val; - pred = msmpeg4_pred_dc(s, n, &dc_val, dir_ptr); - level += pred; - - /* update predictor */ - if (n < 4) { - *dc_val = level * s->y_dc_scale; - } else { - *dc_val = level * s->c_dc_scale; - } - } - - return level; -} - int ff_msmpeg4_decode_motion(MpegEncContext * s, int *mx_ptr, int *my_ptr) { @@ -1948,3 +1882,63 @@ int ff_msmpeg4_decode_motion(MpegEncContext * s, *my_ptr = my; return 0; } + +AVCodec ff_msmpeg4v1_decoder = { + "msmpeg4v1", + AVMEDIA_TYPE_VIDEO, + CODEC_ID_MSMPEG4V1, + sizeof(MpegEncContext), + ff_msmpeg4_decode_init, + NULL, + ff_h263_decode_end, + ff_h263_decode_frame, + CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1, + .max_lowres= 3, + .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 1"), + .pix_fmts= ff_pixfmt_list_420, +}; + +AVCodec ff_msmpeg4v2_decoder = { + "msmpeg4v2", + AVMEDIA_TYPE_VIDEO, + CODEC_ID_MSMPEG4V2, + sizeof(MpegEncContext), + ff_msmpeg4_decode_init, + NULL, + ff_h263_decode_end, + ff_h263_decode_frame, + CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1, + .max_lowres= 3, + .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"), + .pix_fmts= ff_pixfmt_list_420, +}; + +AVCodec ff_msmpeg4v3_decoder = { + "msmpeg4", + AVMEDIA_TYPE_VIDEO, + CODEC_ID_MSMPEG4V3, + sizeof(MpegEncContext), + ff_msmpeg4_decode_init, + NULL, + ff_h263_decode_end, + ff_h263_decode_frame, + CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1, + .max_lowres= 3, + .long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"), + .pix_fmts= ff_pixfmt_list_420, +}; + +AVCodec ff_wmv1_decoder = { + "wmv1", + AVMEDIA_TYPE_VIDEO, + CODEC_ID_WMV1, + sizeof(MpegEncContext), + ff_msmpeg4_decode_init, + NULL, + ff_h263_decode_end, + ff_h263_decode_frame, + CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1, + .max_lowres= 3, + .long_name= NULL_IF_CONFIG_SMALL("Windows Media Video 7"), + .pix_fmts= ff_pixfmt_list_420, +};