X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmjpeg.c;h=a35385180f68bc56c9b315505fad13d3be74db3a;hb=90fcac0e95b7d266c148a86506f301a2072d9de3;hp=e13e12cc842126909ff5000e596c7a326a58c8e0;hpb=391fcef9a9f6da46219559b9b0874e2721a3fb76;p=ffmpeg diff --git a/libavcodec/mjpeg.c b/libavcodec/mjpeg.c index e13e12cc842..a35385180f6 100644 --- a/libavcodec/mjpeg.c +++ b/libavcodec/mjpeg.c @@ -1,147 +1,44 @@ /* * MJPEG encoder and decoder - * Copyright (c) 2000, 2001 Fabrice Bellard. + * Copyright (c) 2000, 2001 Fabrice Bellard * Copyright (c) 2003 Alex Beregszaszi * Copyright (c) 2003-2004 Michael Niedermayer * - * This file is part of FFmpeg. + * Support for external huffman table, various fixes (AVID workaround), + * aspecting, new decode_frame mechanism and apple mjpeg-b support + * by Alex Beregszaszi * - * FFmpeg is free software; you can redistribute it and/or + * This file is part of Libav. + * + * 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 - * - * Support for external huffman table, various fixes (AVID workaround), - * aspecting, new decode_frame mechanism and apple mjpeg-b support - * by Alex Beregszaszi */ /** - * @file mjpeg.c + * @file * MJPEG encoder and decoder. */ -//#define DEBUG -#include - -#include "avcodec.h" -#include "dsputil.h" -#include "mpegvideo.h" -#include "bytestream.h" - -/* use two quantizer tables (one for luminance and one for chrominance) */ -/* not yet working */ -#undef TWOMATRIXES - -typedef struct MJpegContext { - uint8_t huff_size_dc_luminance[12]; //FIXME use array [3] instead of lumi / chrom, for easier addressing - uint16_t huff_code_dc_luminance[12]; - uint8_t huff_size_dc_chrominance[12]; - uint16_t huff_code_dc_chrominance[12]; - - uint8_t huff_size_ac_luminance[256]; - uint16_t huff_code_ac_luminance[256]; - uint8_t huff_size_ac_chrominance[256]; - uint16_t huff_code_ac_chrominance[256]; -} MJpegContext; - -/* JPEG marker codes */ -typedef enum { - /* start of frame */ - SOF0 = 0xc0, /* baseline */ - SOF1 = 0xc1, /* extended sequential, huffman */ - SOF2 = 0xc2, /* progressive, huffman */ - SOF3 = 0xc3, /* lossless, huffman */ - - SOF5 = 0xc5, /* differential sequential, huffman */ - SOF6 = 0xc6, /* differential progressive, huffman */ - SOF7 = 0xc7, /* differential lossless, huffman */ - JPG = 0xc8, /* reserved for JPEG extension */ - SOF9 = 0xc9, /* extended sequential, arithmetic */ - SOF10 = 0xca, /* progressive, arithmetic */ - SOF11 = 0xcb, /* lossless, arithmetic */ - - SOF13 = 0xcd, /* differential sequential, arithmetic */ - SOF14 = 0xce, /* differential progressive, arithmetic */ - SOF15 = 0xcf, /* differential lossless, arithmetic */ - - DHT = 0xc4, /* define huffman tables */ - - DAC = 0xcc, /* define arithmetic-coding conditioning */ - - /* restart with modulo 8 count "m" */ - RST0 = 0xd0, - RST1 = 0xd1, - RST2 = 0xd2, - RST3 = 0xd3, - RST4 = 0xd4, - RST5 = 0xd5, - RST6 = 0xd6, - RST7 = 0xd7, +#include "mjpeg.h" - SOI = 0xd8, /* start of image */ - EOI = 0xd9, /* end of image */ - SOS = 0xda, /* start of scan */ - DQT = 0xdb, /* define quantization tables */ - DNL = 0xdc, /* define number of lines */ - DRI = 0xdd, /* define restart interval */ - DHP = 0xde, /* define hierarchical progression */ - EXP = 0xdf, /* expand reference components */ - - APP0 = 0xe0, - APP1 = 0xe1, - APP2 = 0xe2, - APP3 = 0xe3, - APP4 = 0xe4, - APP5 = 0xe5, - APP6 = 0xe6, - APP7 = 0xe7, - APP8 = 0xe8, - APP9 = 0xe9, - APP10 = 0xea, - APP11 = 0xeb, - APP12 = 0xec, - APP13 = 0xed, - APP14 = 0xee, - APP15 = 0xef, - - JPG0 = 0xf0, - JPG1 = 0xf1, - JPG2 = 0xf2, - JPG3 = 0xf3, - JPG4 = 0xf4, - JPG5 = 0xf5, - JPG6 = 0xf6, - SOF48 = 0xf7, ///< JPEG-LS - LSE = 0xf8, ///< JPEG-LS extension parameters - JPG9 = 0xf9, - JPG10 = 0xfa, - JPG11 = 0xfb, - JPG12 = 0xfc, - JPG13 = 0xfd, - - COM = 0xfe, /* comment */ - - TEM = 0x01, /* temporary private use for arithmetic coding */ - - /* 0x02 -> 0xbf reserved */ -} JPEG_MARKER; #if 0 /* These are the sample quantization tables given in JPEG spec section K.1. * The spec says that the values given produce "good" quality, and * when divided by 2, "very good" quality. */ -static const unsigned char std_luminance_quant_tbl[64] = { +const unsigned char std_luminance_quant_tbl[64] = { 16, 11, 10, 16, 24, 40, 51, 61, 12, 12, 14, 19, 26, 58, 60, 55, 14, 13, 16, 24, 40, 57, 69, 56, @@ -151,7 +48,7 @@ static const unsigned char std_luminance_quant_tbl[64] = { 49, 64, 78, 87, 103, 121, 120, 101, 72, 92, 95, 98, 112, 100, 103, 99 }; -static const unsigned char std_chrominance_quant_tbl[64] = { +const unsigned char std_chrominance_quant_tbl[64] = { 17, 18, 24, 47, 99, 99, 99, 99, 18, 21, 26, 66, 99, 99, 99, 99, 24, 26, 56, 99, 99, 99, 99, 99, @@ -165,19 +62,17 @@ static const unsigned char std_chrominance_quant_tbl[64] = { /* Set up the standard Huffman tables (cf. JPEG standard section K.3) */ /* IMPORTANT: these are only valid for 8-bit data precision! */ -static const uint8_t bits_dc_luminance[17] = +const uint8_t avpriv_mjpeg_bits_dc_luminance[17] = { /* 0-base */ 0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 }; -static const uint8_t val_dc_luminance[] = +const uint8_t avpriv_mjpeg_val_dc[12] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; -static const uint8_t bits_dc_chrominance[17] = +const uint8_t avpriv_mjpeg_bits_dc_chrominance[17] = { /* 0-base */ 0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 }; -static const uint8_t val_dc_chrominance[] = -{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; -static const uint8_t bits_ac_luminance[17] = +const uint8_t avpriv_mjpeg_bits_ac_luminance[17] = { /* 0-base */ 0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d }; -static const uint8_t val_ac_luminance[] = +const uint8_t avpriv_mjpeg_val_ac_luminance[] = { 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, @@ -201,10 +96,10 @@ static const uint8_t val_ac_luminance[] = 0xf9, 0xfa }; -static const uint8_t bits_ac_chrominance[17] = +const uint8_t avpriv_mjpeg_bits_ac_chrominance[17] = { /* 0-base */ 0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 }; -static const uint8_t val_ac_chrominance[] = +const uint8_t avpriv_mjpeg_val_ac_chrominance[] = { 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, @@ -229,8 +124,9 @@ static const uint8_t val_ac_chrominance[] = }; /* isn't this function nicer than the one in the libjpeg ? */ -static void build_huffman_codes(uint8_t *huff_size, uint16_t *huff_code, - const uint8_t *bits_table, const uint8_t *val_table) +void ff_mjpeg_build_huffman_codes(uint8_t *huff_size, uint16_t *huff_code, + const uint8_t *bits_table, + const uint8_t *val_table) { int i, j, k,nb, code, sym; @@ -247,2382 +143,3 @@ static void build_huffman_codes(uint8_t *huff_size, uint16_t *huff_code, code <<= 1; } } - -#ifdef CONFIG_ENCODERS -int mjpeg_init(MpegEncContext *s) -{ - MJpegContext *m; - - m = av_malloc(sizeof(MJpegContext)); - if (!m) - return -1; - - s->min_qcoeff=-1023; - s->max_qcoeff= 1023; - - /* build all the huffman tables */ - build_huffman_codes(m->huff_size_dc_luminance, - m->huff_code_dc_luminance, - bits_dc_luminance, - val_dc_luminance); - build_huffman_codes(m->huff_size_dc_chrominance, - m->huff_code_dc_chrominance, - bits_dc_chrominance, - val_dc_chrominance); - build_huffman_codes(m->huff_size_ac_luminance, - m->huff_code_ac_luminance, - bits_ac_luminance, - val_ac_luminance); - build_huffman_codes(m->huff_size_ac_chrominance, - m->huff_code_ac_chrominance, - bits_ac_chrominance, - val_ac_chrominance); - - s->mjpeg_ctx = m; - return 0; -} - -void mjpeg_close(MpegEncContext *s) -{ - av_free(s->mjpeg_ctx); -} -#endif //CONFIG_ENCODERS - -#define PREDICT(ret, topleft, top, left, predictor)\ - switch(predictor){\ - case 1: ret= left; break;\ - case 2: ret= top; break;\ - case 3: ret= topleft; break;\ - case 4: ret= left + top - topleft; break;\ - case 5: ret= left + ((top - topleft)>>1); break;\ - case 6: ret= top + ((left - topleft)>>1); break;\ - default:\ - case 7: ret= (left + top)>>1; break;\ - } - -#ifdef CONFIG_ENCODERS -static inline void put_marker(PutBitContext *p, int code) -{ - put_bits(p, 8, 0xff); - put_bits(p, 8, code); -} - -/* table_class: 0 = DC coef, 1 = AC coefs */ -static int put_huffman_table(MpegEncContext *s, int table_class, int table_id, - const uint8_t *bits_table, const uint8_t *value_table) -{ - PutBitContext *p = &s->pb; - int n, i; - - put_bits(p, 4, table_class); - put_bits(p, 4, table_id); - - n = 0; - for(i=1;i<=16;i++) { - n += bits_table[i]; - put_bits(p, 8, bits_table[i]); - } - - for(i=0;ipb; - int i, j, size; - uint8_t *ptr; - - /* quant matrixes */ - put_marker(p, DQT); -#ifdef TWOMATRIXES - put_bits(p, 16, 2 + 2 * (1 + 64)); -#else - put_bits(p, 16, 2 + 1 * (1 + 64)); -#endif - put_bits(p, 4, 0); /* 8 bit precision */ - put_bits(p, 4, 0); /* table 0 */ - for(i=0;i<64;i++) { - j = s->intra_scantable.permutated[i]; - put_bits(p, 8, s->intra_matrix[j]); - } -#ifdef TWOMATRIXES - put_bits(p, 4, 0); /* 8 bit precision */ - put_bits(p, 4, 1); /* table 1 */ - for(i=0;i<64;i++) { - j = s->intra_scantable.permutated[i]; - put_bits(p, 8, s->chroma_intra_matrix[j]); - } -#endif - - /* huffman table */ - put_marker(p, DHT); - flush_put_bits(p); - ptr = pbBufPtr(p); - put_bits(p, 16, 0); /* patched later */ - size = 2; - size += put_huffman_table(s, 0, 0, bits_dc_luminance, val_dc_luminance); - size += put_huffman_table(s, 0, 1, bits_dc_chrominance, val_dc_chrominance); - - size += put_huffman_table(s, 1, 0, bits_ac_luminance, val_ac_luminance); - size += put_huffman_table(s, 1, 1, bits_ac_chrominance, val_ac_chrominance); - ptr[0] = size >> 8; - ptr[1] = size; -} - -static void jpeg_put_comments(MpegEncContext *s) -{ - PutBitContext *p = &s->pb; - int size; - uint8_t *ptr; - - if (s->aspect_ratio_info /* && !lossless */) - { - /* JFIF header */ - put_marker(p, APP0); - put_bits(p, 16, 16); - ff_put_string(p, "JFIF", 1); /* this puts the trailing zero-byte too */ - put_bits(p, 16, 0x0201); /* v 1.02 */ - put_bits(p, 8, 0); /* units type: 0 - aspect ratio */ - put_bits(p, 16, s->avctx->sample_aspect_ratio.num); - put_bits(p, 16, s->avctx->sample_aspect_ratio.den); - put_bits(p, 8, 0); /* thumbnail width */ - put_bits(p, 8, 0); /* thumbnail height */ - } - - /* comment */ - if(!(s->flags & CODEC_FLAG_BITEXACT)){ - put_marker(p, COM); - flush_put_bits(p); - ptr = pbBufPtr(p); - put_bits(p, 16, 0); /* patched later */ - ff_put_string(p, LIBAVCODEC_IDENT, 1); - size = strlen(LIBAVCODEC_IDENT)+3; - ptr[0] = size >> 8; - ptr[1] = size; - } - - if( s->avctx->pix_fmt == PIX_FMT_YUV420P - ||s->avctx->pix_fmt == PIX_FMT_YUV422P - ||s->avctx->pix_fmt == PIX_FMT_YUV444P){ - put_marker(p, COM); - flush_put_bits(p); - ptr = pbBufPtr(p); - put_bits(p, 16, 0); /* patched later */ - ff_put_string(p, "CS=ITU601", 1); - size = strlen("CS=ITU601")+3; - ptr[0] = size >> 8; - ptr[1] = size; - } -} - -void mjpeg_picture_header(MpegEncContext *s) -{ - const int lossless= s->avctx->codec_id != CODEC_ID_MJPEG; - const int ls = s->avctx->codec_id == CODEC_ID_JPEGLS; - - assert(!(ls && s->mjpeg_write_tables)); - - put_marker(&s->pb, SOI); - - if (!s->mjpeg_data_only_frames) - { - jpeg_put_comments(s); - - if (s->mjpeg_write_tables) jpeg_table_header(s); - - switch(s->avctx->codec_id){ - case CODEC_ID_MJPEG: put_marker(&s->pb, SOF0 ); break; - case CODEC_ID_LJPEG: put_marker(&s->pb, SOF3 ); break; - case CODEC_ID_JPEGLS: put_marker(&s->pb, SOF48); break; - default: assert(0); - } - - put_bits(&s->pb, 16, 17); - if(lossless && s->avctx->pix_fmt == PIX_FMT_RGB32) - put_bits(&s->pb, 8, 9); /* 9 bits/component RCT */ - else - put_bits(&s->pb, 8, 8); /* 8 bits/component */ - put_bits(&s->pb, 16, s->height); - put_bits(&s->pb, 16, s->width); - put_bits(&s->pb, 8, 3); /* 3 components */ - - /* Y component */ - put_bits(&s->pb, 8, 1); /* component number */ - put_bits(&s->pb, 4, s->mjpeg_hsample[0]); /* H factor */ - put_bits(&s->pb, 4, s->mjpeg_vsample[0]); /* V factor */ - put_bits(&s->pb, 8, 0); /* select matrix */ - - /* Cb component */ - put_bits(&s->pb, 8, 2); /* component number */ - put_bits(&s->pb, 4, s->mjpeg_hsample[1]); /* H factor */ - put_bits(&s->pb, 4, s->mjpeg_vsample[1]); /* V factor */ -#ifdef TWOMATRIXES - put_bits(&s->pb, 8, lossless ? 0 : 1); /* select matrix */ -#else - put_bits(&s->pb, 8, 0); /* select matrix */ -#endif - - /* Cr component */ - put_bits(&s->pb, 8, 3); /* component number */ - put_bits(&s->pb, 4, s->mjpeg_hsample[2]); /* H factor */ - put_bits(&s->pb, 4, s->mjpeg_vsample[2]); /* V factor */ -#ifdef TWOMATRIXES - put_bits(&s->pb, 8, lossless ? 0 : 1); /* select matrix */ -#else - put_bits(&s->pb, 8, 0); /* select matrix */ -#endif - } - - /* scan header */ - put_marker(&s->pb, SOS); - put_bits(&s->pb, 16, 12); /* length */ - put_bits(&s->pb, 8, 3); /* 3 components */ - - /* Y component */ - put_bits(&s->pb, 8, 1); /* index */ - put_bits(&s->pb, 4, 0); /* DC huffman table index */ - put_bits(&s->pb, 4, 0); /* AC huffman table index */ - - /* Cb component */ - put_bits(&s->pb, 8, 2); /* index */ - put_bits(&s->pb, 4, 1); /* DC huffman table index */ - put_bits(&s->pb, 4, lossless ? 0 : 1); /* AC huffman table index */ - - /* Cr component */ - put_bits(&s->pb, 8, 3); /* index */ - put_bits(&s->pb, 4, 1); /* DC huffman table index */ - put_bits(&s->pb, 4, lossless ? 0 : 1); /* AC huffman table index */ - - put_bits(&s->pb, 8, (lossless && !ls) ? s->avctx->prediction_method+1 : 0); /* Ss (not used) */ - - switch(s->avctx->codec_id){ - case CODEC_ID_MJPEG: put_bits(&s->pb, 8, 63); break; /* Se (not used) */ - case CODEC_ID_LJPEG: put_bits(&s->pb, 8, 0); break; /* not used */ - case CODEC_ID_JPEGLS: put_bits(&s->pb, 8, 1); break; /* ILV = line interleaved */ - default: assert(0); - } - - put_bits(&s->pb, 8, 0); /* Ah/Al (not used) */ - - //FIXME DC/AC entropy table selectors stuff in jpegls -} - -static void escape_FF(MpegEncContext *s, int start) -{ - int size= put_bits_count(&s->pb) - start*8; - int i, ff_count; - uint8_t *buf= s->pb.buf + start; - int align= (-(size_t)(buf))&3; - - assert((size&7) == 0); - size >>= 3; - - ff_count=0; - for(i=0; i>4))&0x0F0F0F0F)+0x01010101)&0x10101010; - v= *(uint32_t*)(&buf[i+4]); - acc+=(((v & (v>>4))&0x0F0F0F0F)+0x01010101)&0x10101010; - v= *(uint32_t*)(&buf[i+8]); - acc+=(((v & (v>>4))&0x0F0F0F0F)+0x01010101)&0x10101010; - v= *(uint32_t*)(&buf[i+12]); - acc+=(((v & (v>>4))&0x0F0F0F0F)+0x01010101)&0x10101010; - - acc>>=4; - acc+= (acc>>16); - acc+= (acc>>8); - ff_count+= acc&0xFF; - } - for(; ipb, 32, 0); - put_bits(&s->pb, (ff_count-i)*8, 0); - flush_put_bits(&s->pb); - - for(i=size-1; ff_count; i--){ - int v= buf[i]; - - if(v==0xFF){ -//printf("%d %d\n", i, ff_count); - buf[i+ff_count]= 0; - ff_count--; - } - - buf[i+ff_count]= v; - } -} - -void ff_mjpeg_stuffing(PutBitContext * pbc) -{ - int length; - length= (-put_bits_count(pbc))&7; - if(length) put_bits(pbc, length, (1<pb); - flush_put_bits(&s->pb); - - assert((s->header_bits&7)==0); - - escape_FF(s, s->header_bits>>3); - - put_marker(&s->pb, EOI); -} - -static inline void mjpeg_encode_dc(MpegEncContext *s, int val, - uint8_t *huff_size, uint16_t *huff_code) -{ - int mant, nbits; - - if (val == 0) { - put_bits(&s->pb, huff_size[0], huff_code[0]); - } else { - mant = val; - if (val < 0) { - val = -val; - mant--; - } - - nbits= av_log2_16bit(val) + 1; - - put_bits(&s->pb, huff_size[nbits], huff_code[nbits]); - - put_bits(&s->pb, nbits, mant & ((1 << nbits) - 1)); - } -} - -static void encode_block(MpegEncContext *s, DCTELEM *block, int n) -{ - int mant, nbits, code, i, j; - int component, dc, run, last_index, val; - MJpegContext *m = s->mjpeg_ctx; - uint8_t *huff_size_ac; - uint16_t *huff_code_ac; - - /* DC coef */ - component = (n <= 3 ? 0 : (n&1) + 1); - dc = block[0]; /* overflow is impossible */ - val = dc - s->last_dc[component]; - if (n < 4) { - mjpeg_encode_dc(s, val, m->huff_size_dc_luminance, m->huff_code_dc_luminance); - huff_size_ac = m->huff_size_ac_luminance; - huff_code_ac = m->huff_code_ac_luminance; - } else { - mjpeg_encode_dc(s, val, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance); - huff_size_ac = m->huff_size_ac_chrominance; - huff_code_ac = m->huff_code_ac_chrominance; - } - s->last_dc[component] = dc; - - /* AC coefs */ - - run = 0; - last_index = s->block_last_index[n]; - for(i=1;i<=last_index;i++) { - j = s->intra_scantable.permutated[i]; - val = block[j]; - if (val == 0) { - run++; - } else { - while (run >= 16) { - put_bits(&s->pb, huff_size_ac[0xf0], huff_code_ac[0xf0]); - run -= 16; - } - mant = val; - if (val < 0) { - val = -val; - mant--; - } - - nbits= av_log2(val) + 1; - code = (run << 4) | nbits; - - put_bits(&s->pb, huff_size_ac[code], huff_code_ac[code]); - - put_bits(&s->pb, nbits, mant & ((1 << nbits) - 1)); - run = 0; - } - } - - /* output EOB only if not already 64 values */ - if (last_index < 63 || run != 0) - put_bits(&s->pb, huff_size_ac[0], huff_code_ac[0]); -} - -void mjpeg_encode_mb(MpegEncContext *s, - DCTELEM block[6][64]) -{ - int i; - for(i=0;i<5;i++) { - encode_block(s, block[i], i); - } - if (s->chroma_format == CHROMA_420) { - encode_block(s, block[5], 5); - } else { - encode_block(s, block[6], 6); - encode_block(s, block[5], 5); - encode_block(s, block[7], 7); - } -} - -static int encode_picture_lossless(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ - MpegEncContext * const s = avctx->priv_data; - MJpegContext * const m = s->mjpeg_ctx; - AVFrame *pict = data; - const int width= s->width; - const int height= s->height; - AVFrame * const p= (AVFrame*)&s->current_picture; - const int predictor= avctx->prediction_method+1; - - init_put_bits(&s->pb, buf, buf_size); - - *p = *pict; - p->pict_type= FF_I_TYPE; - p->key_frame= 1; - - mjpeg_picture_header(s); - - s->header_bits= put_bits_count(&s->pb); - - if(avctx->pix_fmt == PIX_FMT_RGB32){ - int x, y, i; - const int linesize= p->linesize[0]; - uint16_t (*buffer)[4]= (void *) s->rd_scratchpad; - int left[3], top[3], topleft[3]; - - for(i=0; i<3; i++){ - buffer[0][i]= 1 << (9 - 1); - } - - for(y = 0; y < height; y++) { - const int modified_predictor= y ? predictor : 1; - uint8_t *ptr = p->data[0] + (linesize * y); - - if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < width*3*4){ - av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); - return -1; - } - - for(i=0; i<3; i++){ - top[i]= left[i]= topleft[i]= buffer[0][i]; - } - for(x = 0; x < width; x++) { - buffer[x][1] = ptr[4*x+0] - ptr[4*x+1] + 0x100; - buffer[x][2] = ptr[4*x+2] - ptr[4*x+1] + 0x100; - buffer[x][0] = (ptr[4*x+0] + 2*ptr[4*x+1] + ptr[4*x+2])>>2; - - for(i=0;i<3;i++) { - int pred, diff; - - PREDICT(pred, topleft[i], top[i], left[i], modified_predictor); - - topleft[i]= top[i]; - top[i]= buffer[x+1][i]; - - left[i]= buffer[x][i]; - - diff= ((left[i] - pred + 0x100)&0x1FF) - 0x100; - - if(i==0) - mjpeg_encode_dc(s, diff, m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly - else - mjpeg_encode_dc(s, diff, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance); - } - } - } - }else{ - int mb_x, mb_y, i; - const int mb_width = (width + s->mjpeg_hsample[0] - 1) / s->mjpeg_hsample[0]; - const int mb_height = (height + s->mjpeg_vsample[0] - 1) / s->mjpeg_vsample[0]; - - for(mb_y = 0; mb_y < mb_height; mb_y++) { - if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < mb_width * 4 * 3 * s->mjpeg_hsample[0] * s->mjpeg_vsample[0]){ - av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); - return -1; - } - for(mb_x = 0; mb_x < mb_width; mb_x++) { - if(mb_x==0 || mb_y==0){ - for(i=0;i<3;i++) { - uint8_t *ptr; - int x, y, h, v, linesize; - h = s->mjpeg_hsample[i]; - v = s->mjpeg_vsample[i]; - linesize= p->linesize[i]; - - for(y=0; ydata[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap - if(y==0 && mb_y==0){ - if(x==0 && mb_x==0){ - pred= 128; - }else{ - pred= ptr[-1]; - } - }else{ - if(x==0 && mb_x==0){ - pred= ptr[-linesize]; - }else{ - PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor); - } - } - - if(i==0) - mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly - else - mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_chrominance, m->huff_code_dc_chrominance); - } - } - } - }else{ - for(i=0;i<3;i++) { - uint8_t *ptr; - int x, y, h, v, linesize; - h = s->mjpeg_hsample[i]; - v = s->mjpeg_vsample[i]; - linesize= p->linesize[i]; - - for(y=0; ydata[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap -//printf("%d %d %d %d %8X\n", mb_x, mb_y, x, y, ptr); - PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor); - - if(i==0) - mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly - else - mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_chrominance, m->huff_code_dc_chrominance); - } - } - } - } - } - } - } - - emms_c(); - - mjpeg_picture_trailer(s); - s->picture_number++; - - flush_put_bits(&s->pb); - return pbBufPtr(&s->pb) - s->pb.buf; -// return (put_bits_count(&f->pb)+7)/8; -} - -#endif //CONFIG_ENCODERS - -/******************************************/ -/* decoding */ - -#define MAX_COMPONENTS 4 - -typedef struct MJpegDecodeContext { - AVCodecContext *avctx; - GetBitContext gb; - int mpeg_enc_ctx_allocated; /* true if decoding context allocated */ - - int start_code; /* current start code */ - int buffer_size; - uint8_t *buffer; - - int16_t quant_matrixes[4][64]; - VLC vlcs[2][4]; - int qscale[4]; ///< quantizer scale calculated from quant_matrixes - - int org_height; /* size given at codec init */ - int first_picture; /* true if decoding first picture */ - int interlaced; /* true if interlaced */ - int bottom_field; /* true if bottom field */ - int lossless; - int ls; - int progressive; - int rgb; - int rct; /* standard rct */ - int pegasus_rct; /* pegasus reversible colorspace transform */ - int bits; /* bits per component */ - - int maxval; - int near; ///< near lossless bound (si 0 for lossless) - int t1,t2,t3; - int reset; ///< context halfing intervall ?rename - - int width, height; - int mb_width, mb_height; - int nb_components; - int component_id[MAX_COMPONENTS]; - int h_count[MAX_COMPONENTS]; /* horizontal and vertical count for each component */ - int v_count[MAX_COMPONENTS]; - int comp_index[MAX_COMPONENTS]; - int dc_index[MAX_COMPONENTS]; - int ac_index[MAX_COMPONENTS]; - int nb_blocks[MAX_COMPONENTS]; - int h_scount[MAX_COMPONENTS]; - int v_scount[MAX_COMPONENTS]; - int h_max, v_max; /* maximum h and v counts */ - int quant_index[4]; /* quant table index for each component */ - int last_dc[MAX_COMPONENTS]; /* last DEQUANTIZED dc (XXX: am I right to do that ?) */ - AVFrame picture; /* picture structure */ - int linesize[MAX_COMPONENTS]; ///< linesize << interlaced - int8_t *qscale_table; - DECLARE_ALIGNED_8(DCTELEM, block[64]); - ScanTable scantable; - void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/); - void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/); - - int restart_interval; - int restart_count; - - int buggy_avid; - int cs_itu601; - int interlace_polarity; - - int mjpb_skiptosod; - - int cur_scan; /* current scan, used by JPEG-LS */ -} MJpegDecodeContext; - -#include "jpeg_ls.c" //FIXME make jpeg-ls more independant - -static int mjpeg_decode_dht(MJpegDecodeContext *s); - -static int build_vlc(VLC *vlc, const uint8_t *bits_table, const uint8_t *val_table, - int nb_codes, int use_static, int is_ac) -{ - uint8_t huff_size[256+16]; - uint16_t huff_code[256+16]; - - assert(nb_codes <= 256); - - memset(huff_size, 0, sizeof(huff_size)); - build_huffman_codes(huff_size, huff_code, bits_table, val_table); - - if(is_ac){ - memmove(huff_size+16, huff_size, sizeof(uint8_t)*nb_codes); - memmove(huff_code+16, huff_code, sizeof(uint16_t)*nb_codes); - memset(huff_size, 0, sizeof(uint8_t)*16); - memset(huff_code, 0, sizeof(uint16_t)*16); - nb_codes += 16; - } - - return init_vlc(vlc, 9, nb_codes, huff_size, 1, 1, huff_code, 2, 2, use_static); -} - -static int mjpeg_decode_init(AVCodecContext *avctx) -{ - MJpegDecodeContext *s = avctx->priv_data; - MpegEncContext s2; - memset(s, 0, sizeof(MJpegDecodeContext)); - - s->avctx = avctx; - - /* ugly way to get the idct & scantable FIXME */ - memset(&s2, 0, sizeof(MpegEncContext)); - s2.avctx= avctx; -// s2->out_format = FMT_MJPEG; - dsputil_init(&s2.dsp, avctx); - DCT_common_init(&s2); - - s->scantable= s2.intra_scantable; - s->idct_put= s2.dsp.idct_put; - s->idct_add= s2.dsp.idct_add; - - s->mpeg_enc_ctx_allocated = 0; - s->buffer_size = 0; - s->buffer = NULL; - s->start_code = -1; - s->first_picture = 1; - s->org_height = avctx->coded_height; - - build_vlc(&s->vlcs[0][0], bits_dc_luminance, val_dc_luminance, 12, 0, 0); - build_vlc(&s->vlcs[0][1], bits_dc_chrominance, val_dc_chrominance, 12, 0, 0); - build_vlc(&s->vlcs[1][0], bits_ac_luminance, val_ac_luminance, 251, 0, 1); - build_vlc(&s->vlcs[1][1], bits_ac_chrominance, val_ac_chrominance, 251, 0, 1); - - if (avctx->flags & CODEC_FLAG_EXTERN_HUFF) - { - av_log(avctx, AV_LOG_INFO, "mjpeg: using external huffman table\n"); - init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size*8); - mjpeg_decode_dht(s); - /* should check for error - but dunno */ - } - - return 0; -} - - -/** - * finds the end of the current frame in the bitstream. - * @return the position of the first byte of the next frame, or -1 - */ -static int find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){ - int vop_found, i; - uint16_t state; - - vop_found= pc->frame_start_found; - state= pc->state; - - i=0; - if(!vop_found){ - for(i=0; iframe_start_found=0; - pc->state=0; - return i-1; - } - } - } - pc->frame_start_found= vop_found; - pc->state= state; - return END_NOT_FOUND; -} - -static int jpeg_parse(AVCodecParserContext *s, - AVCodecContext *avctx, - uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size) -{ - ParseContext *pc = s->priv_data; - int next; - - next= find_frame_end(pc, buf, buf_size); - - if (ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size) < 0) { - *poutbuf = NULL; - *poutbuf_size = 0; - return buf_size; - } - - *poutbuf = (uint8_t *)buf; - *poutbuf_size = buf_size; - return next; -} - -/* quantize tables */ -static int mjpeg_decode_dqt(MJpegDecodeContext *s) -{ - int len, index, i, j; - - len = get_bits(&s->gb, 16) - 2; - - while (len >= 65) { - /* only 8 bit precision handled */ - if (get_bits(&s->gb, 4) != 0) - { - av_log(s->avctx, AV_LOG_ERROR, "dqt: 16bit precision\n"); - return -1; - } - index = get_bits(&s->gb, 4); - if (index >= 4) - return -1; - av_log(s->avctx, AV_LOG_DEBUG, "index=%d\n", index); - /* read quant table */ - for(i=0;i<64;i++) { - j = s->scantable.permutated[i]; - s->quant_matrixes[index][j] = get_bits(&s->gb, 8); - } - - //XXX FIXME finetune, and perhaps add dc too - s->qscale[index]= FFMAX( - s->quant_matrixes[index][s->scantable.permutated[1]], - s->quant_matrixes[index][s->scantable.permutated[8]]) >> 1; - av_log(s->avctx, AV_LOG_DEBUG, "qscale[%d]: %d\n", index, s->qscale[index]); - len -= 65; - } - - return 0; -} - -/* decode huffman tables and build VLC decoders */ -static int mjpeg_decode_dht(MJpegDecodeContext *s) -{ - int len, index, i, class, n, v, code_max; - uint8_t bits_table[17]; - uint8_t val_table[256]; - - len = get_bits(&s->gb, 16) - 2; - - while (len > 0) { - if (len < 17) - return -1; - class = get_bits(&s->gb, 4); - if (class >= 2) - return -1; - index = get_bits(&s->gb, 4); - if (index >= 4) - return -1; - n = 0; - for(i=1;i<=16;i++) { - bits_table[i] = get_bits(&s->gb, 8); - n += bits_table[i]; - } - len -= 17; - if (len < n || n > 256) - return -1; - - code_max = 0; - for(i=0;igb, 8); - if (v > code_max) - code_max = v; - val_table[i] = v; - } - len -= n; - - /* build VLC and flush previous vlc if present */ - free_vlc(&s->vlcs[class][index]); - av_log(s->avctx, AV_LOG_DEBUG, "class=%d index=%d nb_codes=%d\n", - class, index, code_max + 1); - if(build_vlc(&s->vlcs[class][index], bits_table, val_table, code_max + 1, 0, class > 0) < 0){ - return -1; - } - } - return 0; -} - -static int mjpeg_decode_sof(MJpegDecodeContext *s) -{ - int len, nb_components, i, width, height, pix_fmt_id; - - /* XXX: verify len field validity */ - len = get_bits(&s->gb, 16); - s->bits= get_bits(&s->gb, 8); - - if(s->pegasus_rct) s->bits=9; - if(s->bits==9 && !s->pegasus_rct) s->rct=1; //FIXME ugly - - if (s->bits != 8 && !s->lossless){ - av_log(s->avctx, AV_LOG_ERROR, "only 8 bits/component accepted\n"); - return -1; - } - - height = get_bits(&s->gb, 16); - width = get_bits(&s->gb, 16); - - av_log(s->avctx, AV_LOG_DEBUG, "sof0: picture: %dx%d\n", width, height); - if(avcodec_check_dimensions(s->avctx, width, height)) - return -1; - - nb_components = get_bits(&s->gb, 8); - if (nb_components <= 0 || - nb_components > MAX_COMPONENTS) - return -1; - if (s->ls && !(s->bits <= 8 || nb_components == 1)){ - av_log(s->avctx, AV_LOG_ERROR, "only <= 8 bits/component or 16-bit gray accepted for JPEG-LS\n"); - return -1; - } - s->nb_components = nb_components; - s->h_max = 1; - s->v_max = 1; - for(i=0;icomponent_id[i] = get_bits(&s->gb, 8) - 1; - s->h_count[i] = get_bits(&s->gb, 4); - s->v_count[i] = get_bits(&s->gb, 4); - /* compute hmax and vmax (only used in interleaved case) */ - if (s->h_count[i] > s->h_max) - s->h_max = s->h_count[i]; - if (s->v_count[i] > s->v_max) - s->v_max = s->v_count[i]; - s->quant_index[i] = get_bits(&s->gb, 8); - if (s->quant_index[i] >= 4) - return -1; - av_log(s->avctx, AV_LOG_DEBUG, "component %d %d:%d id: %d quant:%d\n", i, s->h_count[i], - s->v_count[i], s->component_id[i], s->quant_index[i]); - } - - if(s->ls && (s->h_max > 1 || s->v_max > 1)) { - av_log(s->avctx, AV_LOG_ERROR, "Subsampling in JPEG-LS is not supported.\n"); - return -1; - } - - if(s->v_max==1 && s->h_max==1 && s->lossless==1) s->rgb=1; - - /* if different size, realloc/alloc picture */ - /* XXX: also check h_count and v_count */ - if (width != s->width || height != s->height) { - av_freep(&s->qscale_table); - - s->width = width; - s->height = height; - - /* test interlaced mode */ - if (s->first_picture && - s->org_height != 0 && - s->height < ((s->org_height * 3) / 4)) { - s->interlaced = 1; -// s->bottom_field = (s->interlace_polarity) ? 1 : 0; - s->bottom_field = 0; - height *= 2; - } - - avcodec_set_dimensions(s->avctx, width, height); - - s->qscale_table= av_mallocz((s->width+15)/16); - - s->first_picture = 0; - } - - if(s->interlaced && s->bottom_field) - return 0; - - /* XXX: not complete test ! */ - pix_fmt_id = (s->h_count[0] << 20) | (s->v_count[0] << 16) | - (s->h_count[1] << 12) | (s->v_count[1] << 8) | - (s->h_count[2] << 4) | s->v_count[2]; - av_log(s->avctx, AV_LOG_DEBUG, "pix fmt id %x\n", pix_fmt_id); - switch(pix_fmt_id){ - case 0x222222: - case 0x111111: - if(s->rgb){ - s->avctx->pix_fmt = PIX_FMT_RGB32; - }else if(s->nb_components==3) - s->avctx->pix_fmt = s->cs_itu601 ? PIX_FMT_YUV444P : PIX_FMT_YUVJ444P; - else - s->avctx->pix_fmt = PIX_FMT_GRAY8; - break; - case 0x211111: - case 0x221212: - s->avctx->pix_fmt = s->cs_itu601 ? PIX_FMT_YUV422P : PIX_FMT_YUVJ422P; - break; - default: - case 0x221111: - s->avctx->pix_fmt = s->cs_itu601 ? PIX_FMT_YUV420P : PIX_FMT_YUVJ420P; - break; - } - if(s->ls){ - if(s->nb_components > 1) - s->avctx->pix_fmt = PIX_FMT_RGB24; - else if(s->bits <= 8) - s->avctx->pix_fmt = PIX_FMT_GRAY8; - else - s->avctx->pix_fmt = PIX_FMT_GRAY16; - } - - if(s->picture.data[0]) - s->avctx->release_buffer(s->avctx, &s->picture); - - s->picture.reference= 0; - if(s->avctx->get_buffer(s->avctx, &s->picture) < 0){ - av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n"); - return -1; - } - s->picture.pict_type= I_TYPE; - s->picture.key_frame= 1; - - for(i=0; i<3; i++){ - s->linesize[i]= s->picture.linesize[i] << s->interlaced; - } - -// printf("%d %d %d %d %d %d\n", s->width, s->height, s->linesize[0], s->linesize[1], s->interlaced, s->avctx->height); - - if (len != (8+(3*nb_components))) - { - av_log(s->avctx, AV_LOG_DEBUG, "decode_sof0: error, len(%d) mismatch\n", len); - } - - /* totally blank picture as progressive JPEG will only add details to it */ - if(s->progressive){ - memset(s->picture.data[0], 0, s->picture.linesize[0] * s->height); - memset(s->picture.data[1], 0, s->picture.linesize[1] * s->height >> (s->v_max - s->v_count[1])); - memset(s->picture.data[2], 0, s->picture.linesize[2] * s->height >> (s->v_max - s->v_count[2])); - } - return 0; -} - -static inline int mjpeg_decode_dc(MJpegDecodeContext *s, int dc_index) -{ - int code; - code = get_vlc2(&s->gb, s->vlcs[0][dc_index].table, 9, 2); - if (code < 0) - { - av_log(s->avctx, AV_LOG_WARNING, "mjpeg_decode_dc: bad vlc: %d:%d (%p)\n", 0, dc_index, - &s->vlcs[0][dc_index]); - return 0xffff; - } - - if(code) - return get_xbits(&s->gb, code); - else - return 0; -} - -/* decode block and dequantize */ -static int decode_block(MJpegDecodeContext *s, DCTELEM *block, - int component, int dc_index, int ac_index, int16_t *quant_matrix) -{ - int code, i, j, level, val; - - /* DC coef */ - val = mjpeg_decode_dc(s, dc_index); - if (val == 0xffff) { - av_log(s->avctx, AV_LOG_ERROR, "error dc\n"); - return -1; - } - val = val * quant_matrix[0] + s->last_dc[component]; - s->last_dc[component] = val; - block[0] = val; - /* AC coefs */ - i = 0; - {OPEN_READER(re, &s->gb) - for(;;) { - UPDATE_CACHE(re, &s->gb); - GET_VLC(code, re, &s->gb, s->vlcs[1][ac_index].table, 9, 2) - - /* EOB */ - if (code == 0x10) - break; - i += ((unsigned)code) >> 4; - if(code != 0x100){ - code &= 0xf; - if(code > MIN_CACHE_BITS - 16){ - UPDATE_CACHE(re, &s->gb) - } - { - int cache=GET_CACHE(re,&s->gb); - int sign=(~cache)>>31; - level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign; - } - - LAST_SKIP_BITS(re, &s->gb, code) - - if (i >= 63) { - if(i == 63){ - j = s->scantable.permutated[63]; - block[j] = level * quant_matrix[j]; - break; - } - av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); - return -1; - } - j = s->scantable.permutated[i]; - block[j] = level * quant_matrix[j]; - } - } - CLOSE_READER(re, &s->gb)} - - return 0; -} - -/* decode block and dequantize - progressive JPEG version */ -static int decode_block_progressive(MJpegDecodeContext *s, DCTELEM *block, - int component, int dc_index, int ac_index, int16_t *quant_matrix, - int ss, int se, int Ah, int Al, int *EOBRUN) -{ - int code, i, j, level, val, run; - - /* DC coef */ - if(!ss){ - val = mjpeg_decode_dc(s, dc_index); - if (val == 0xffff) { - av_log(s->avctx, AV_LOG_ERROR, "error dc\n"); - return -1; - } - val = (val * quant_matrix[0] << Al) + s->last_dc[component]; - }else - val = 0; - s->last_dc[component] = val; - block[0] = val; - if(!se) return 0; - /* AC coefs */ - if(*EOBRUN){ - (*EOBRUN)--; - return 0; - } - {OPEN_READER(re, &s->gb) - for(i=ss;;i++) { - UPDATE_CACHE(re, &s->gb); - GET_VLC(code, re, &s->gb, s->vlcs[1][ac_index].table, 9, 2) - /* Progressive JPEG use AC coeffs from zero and this decoder sets offset 16 by default */ - code -= 16; - if(code & 0xF) { - i += ((unsigned) code) >> 4; - code &= 0xf; - if(code > MIN_CACHE_BITS - 16){ - UPDATE_CACHE(re, &s->gb) - } - { - int cache=GET_CACHE(re,&s->gb); - int sign=(~cache)>>31; - level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign; - } - - LAST_SKIP_BITS(re, &s->gb, code) - - if (i >= se) { - if(i == se){ - j = s->scantable.permutated[se]; - block[j] = level * quant_matrix[j] << Al; - break; - } - av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); - return -1; - } - j = s->scantable.permutated[i]; - block[j] = level * quant_matrix[j] << Al; - }else{ - run = ((unsigned) code) >> 4; - if(run == 0xF){// ZRL - skip 15 coefficients - i += 15; - }else{ - val = run; - run = (1 << run); - UPDATE_CACHE(re, &s->gb); - run += (GET_CACHE(re, &s->gb) >> (32 - val)) & (run - 1); - if(val) - LAST_SKIP_BITS(re, &s->gb, val); - *EOBRUN = run - 1; - break; - } - } - } - CLOSE_READER(re, &s->gb)} - - return 0; -} - -static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int predictor, int point_transform){ - int i, mb_x, mb_y; - uint16_t buffer[32768][4]; - int left[3], top[3], topleft[3]; - const int linesize= s->linesize[0]; - const int mask= (1<bits)-1; - - if((unsigned)s->mb_width > 32768) //dynamic alloc - return -1; - - for(i=0; i<3; i++){ - buffer[0][i]= 1 << (s->bits + point_transform - 1); - } - for(mb_y = 0; mb_y < s->mb_height; mb_y++) { - const int modified_predictor= mb_y ? predictor : 1; - uint8_t *ptr = s->picture.data[0] + (linesize * mb_y); - - if (s->interlaced && s->bottom_field) - ptr += linesize >> 1; - - for(i=0; i<3; i++){ - top[i]= left[i]= topleft[i]= buffer[0][i]; - } - for(mb_x = 0; mb_x < s->mb_width; mb_x++) { - if (s->restart_interval && !s->restart_count) - s->restart_count = s->restart_interval; - - for(i=0;i<3;i++) { - int pred; - - topleft[i]= top[i]; - top[i]= buffer[mb_x][i]; - - PREDICT(pred, topleft[i], top[i], left[i], modified_predictor); - - left[i]= - buffer[mb_x][i]= mask & (pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform)); - } - - if (s->restart_interval && !--s->restart_count) { - align_get_bits(&s->gb); - skip_bits(&s->gb, 16); /* skip RSTn */ - } - } - - if(s->rct){ - for(mb_x = 0; mb_x < s->mb_width; mb_x++) { - ptr[4*mb_x+1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2] - 0x200)>>2); - ptr[4*mb_x+0] = buffer[mb_x][1] + ptr[4*mb_x+1]; - ptr[4*mb_x+2] = buffer[mb_x][2] + ptr[4*mb_x+1]; - } - }else if(s->pegasus_rct){ - for(mb_x = 0; mb_x < s->mb_width; mb_x++) { - ptr[4*mb_x+1] = buffer[mb_x][0] - ((buffer[mb_x][1] + buffer[mb_x][2])>>2); - ptr[4*mb_x+0] = buffer[mb_x][1] + ptr[4*mb_x+1]; - ptr[4*mb_x+2] = buffer[mb_x][2] + ptr[4*mb_x+1]; - } - }else{ - for(mb_x = 0; mb_x < s->mb_width; mb_x++) { - ptr[4*mb_x+0] = buffer[mb_x][0]; - ptr[4*mb_x+1] = buffer[mb_x][1]; - ptr[4*mb_x+2] = buffer[mb_x][2]; - } - } - } - return 0; -} - -static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, int point_transform){ - int i, mb_x, mb_y; - const int nb_components=3; - - for(mb_y = 0; mb_y < s->mb_height; mb_y++) { - for(mb_x = 0; mb_x < s->mb_width; mb_x++) { - if (s->restart_interval && !s->restart_count) - s->restart_count = s->restart_interval; - - if(mb_x==0 || mb_y==0 || s->interlaced){ - for(i=0;inb_blocks[i]; - c = s->comp_index[i]; - h = s->h_scount[i]; - v = s->v_scount[i]; - x = 0; - y = 0; - linesize= s->linesize[c]; - - for(j=0; jpicture.data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap - if(y==0 && mb_y==0){ - if(x==0 && mb_x==0){ - pred= 128 << point_transform; - }else{ - pred= ptr[-1]; - } - }else{ - if(x==0 && mb_x==0){ - pred= ptr[-linesize]; - }else{ - PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor); - } - } - - if (s->interlaced && s->bottom_field) - ptr += linesize >> 1; - *ptr= pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform); - - if (++x == h) { - x = 0; - y++; - } - } - } - }else{ - for(i=0;inb_blocks[i]; - c = s->comp_index[i]; - h = s->h_scount[i]; - v = s->v_scount[i]; - x = 0; - y = 0; - linesize= s->linesize[c]; - - for(j=0; jpicture.data[c] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap - PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor); - *ptr= pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform); - if (++x == h) { - x = 0; - y++; - } - } - } - } - if (s->restart_interval && !--s->restart_count) { - align_get_bits(&s->gb); - skip_bits(&s->gb, 16); /* skip RSTn */ - } - } - } - return 0; -} - -static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int ss, int se, int Ah, int Al){ - int i, mb_x, mb_y; - int EOBRUN = 0; - - if(Ah) return 0; /* TODO decode refinement planes too */ - for(mb_y = 0; mb_y < s->mb_height; mb_y++) { - for(mb_x = 0; mb_x < s->mb_width; mb_x++) { - if (s->restart_interval && !s->restart_count) - s->restart_count = s->restart_interval; - - for(i=0;inb_blocks[i]; - c = s->comp_index[i]; - h = s->h_scount[i]; - v = s->v_scount[i]; - x = 0; - y = 0; - for(j=0;jblock, 0, sizeof(s->block)); - if (!s->progressive && decode_block(s, s->block, i, - s->dc_index[i], s->ac_index[i], - s->quant_matrixes[ s->quant_index[c] ]) < 0) { - av_log(s->avctx, AV_LOG_ERROR, "error y=%d x=%d\n", mb_y, mb_x); - return -1; - } - if (s->progressive && decode_block_progressive(s, s->block, i, - s->dc_index[i], s->ac_index[i], - s->quant_matrixes[ s->quant_index[c] ], ss, se, Ah, Al, &EOBRUN) < 0) { - av_log(s->avctx, AV_LOG_ERROR, "error y=%d x=%d\n", mb_y, mb_x); - return -1; - } -// av_log(s->avctx, AV_LOG_DEBUG, "mb: %d %d processed\n", mb_y, mb_x); - ptr = s->picture.data[c] + - (((s->linesize[c] * (v * mb_y + y) * 8) + - (h * mb_x + x) * 8) >> s->avctx->lowres); - if (s->interlaced && s->bottom_field) - ptr += s->linesize[c] >> 1; -//av_log(NULL, AV_LOG_DEBUG, "%d %d %d %d %d %d %d %d \n", mb_x, mb_y, x, y, c, s->bottom_field, (v * mb_y + y) * 8, (h * mb_x + x) * 8); - if(!s->progressive) - s->idct_put(ptr, s->linesize[c], s->block); - else - s->idct_add(ptr, s->linesize[c], s->block); - if (++x == h) { - x = 0; - y++; - } - } - } - /* (< 1350) buggy workaround for Spectralfan.mov, should be fixed */ - if (s->restart_interval && (s->restart_interval < 1350) && - !--s->restart_count) { - align_get_bits(&s->gb); - skip_bits(&s->gb, 16); /* skip RSTn */ - for (i=0; ilast_dc[i] = 1024; - } - } - } - return 0; -} - -static int mjpeg_decode_sos(MJpegDecodeContext *s) -{ - int len, nb_components, i, h, v, predictor, point_transform; - int vmax, hmax, index, id; - const int block_size= s->lossless ? 1 : 8; - int ilv, prev_shift; - - /* XXX: verify len field validity */ - len = get_bits(&s->gb, 16); - nb_components = get_bits(&s->gb, 8); - if (len != 6+2*nb_components) - { - av_log(s->avctx, AV_LOG_ERROR, "decode_sos: invalid len (%d)\n", len); - return -1; - } - vmax = 0; - hmax = 0; - for(i=0;igb, 8) - 1; - av_log(s->avctx, AV_LOG_DEBUG, "component: %d\n", id); - /* find component index */ - for(index=0;indexnb_components;index++) - if (id == s->component_id[index]) - break; - if (index == s->nb_components) - { - av_log(s->avctx, AV_LOG_ERROR, "decode_sos: index(%d) out of components\n", index); - return -1; - } - - s->comp_index[i] = index; - - s->nb_blocks[i] = s->h_count[index] * s->v_count[index]; - s->h_scount[i] = s->h_count[index]; - s->v_scount[i] = s->v_count[index]; - - s->dc_index[i] = get_bits(&s->gb, 4); - s->ac_index[i] = get_bits(&s->gb, 4); - - if (s->dc_index[i] < 0 || s->ac_index[i] < 0 || - s->dc_index[i] >= 4 || s->ac_index[i] >= 4) - goto out_of_range; -#if 0 //buggy - switch(s->start_code) - { - case SOF0: - if (dc_index[i] > 1 || ac_index[i] > 1) - goto out_of_range; - break; - case SOF1: - case SOF2: - if (dc_index[i] > 3 || ac_index[i] > 3) - goto out_of_range; - break; - case SOF3: - if (dc_index[i] > 3 || ac_index[i] != 0) - goto out_of_range; - break; - } -#endif - } - - predictor= get_bits(&s->gb, 8); /* JPEG Ss / lossless JPEG predictor /JPEG-LS NEAR */ - ilv= get_bits(&s->gb, 8); /* JPEG Se / JPEG-LS ILV */ - prev_shift = get_bits(&s->gb, 4); /* Ah */ - point_transform= get_bits(&s->gb, 4); /* Al */ - - for(i=0;ilast_dc[i] = 1024; - - if (nb_components > 1) { - /* interleaved stream */ - s->mb_width = (s->width + s->h_max * block_size - 1) / (s->h_max * block_size); - s->mb_height = (s->height + s->v_max * block_size - 1) / (s->v_max * block_size); - } else if(!s->ls) { /* skip this for JPEG-LS */ - h = s->h_max / s->h_scount[0]; - v = s->v_max / s->v_scount[0]; - s->mb_width = (s->width + h * block_size - 1) / (h * block_size); - s->mb_height = (s->height + v * block_size - 1) / (v * block_size); - s->nb_blocks[0] = 1; - s->h_scount[0] = 1; - s->v_scount[0] = 1; - } - - if(s->avctx->debug & FF_DEBUG_PICT_INFO) - av_log(s->avctx, AV_LOG_DEBUG, "%s %s p:%d >>:%d ilv:%d bits:%d %s\n", s->lossless ? "lossless" : "sequencial DCT", s->rgb ? "RGB" : "", - predictor, point_transform, ilv, s->bits, - s->pegasus_rct ? "PRCT" : (s->rct ? "RCT" : "")); - - - /* mjpeg-b can have padding bytes between sos and image data, skip them */ - for (i = s->mjpb_skiptosod; i > 0; i--) - skip_bits(&s->gb, 8); - - if(s->lossless){ - if(s->ls){ -// for(){ -// reset_ls_coding_parameters(s, 0); - - ls_decode_picture(s, predictor, point_transform, ilv); - }else{ - if(s->rgb){ - if(ljpeg_decode_rgb_scan(s, predictor, point_transform) < 0) - return -1; - }else{ - if(ljpeg_decode_yuv_scan(s, predictor, point_transform) < 0) - return -1; - } - } - }else{ - if(mjpeg_decode_scan(s, nb_components, predictor, ilv, prev_shift, point_transform) < 0) - return -1; - } - emms_c(); - return 0; - out_of_range: - av_log(s->avctx, AV_LOG_ERROR, "decode_sos: ac/dc index out of range\n"); - return -1; -} - -static int mjpeg_decode_dri(MJpegDecodeContext *s) -{ - if (get_bits(&s->gb, 16) != 4) - return -1; - s->restart_interval = get_bits(&s->gb, 16); - s->restart_count = 0; - av_log(s->avctx, AV_LOG_DEBUG, "restart interval: %d\n", s->restart_interval); - - return 0; -} - -static int mjpeg_decode_app(MJpegDecodeContext *s) -{ - int len, id; - - len = get_bits(&s->gb, 16); - if (len < 5) - return -1; - if(8*len + get_bits_count(&s->gb) > s->gb.size_in_bits) - return -1; - - id = (get_bits(&s->gb, 16) << 16) | get_bits(&s->gb, 16); - id = be2me_32(id); - len -= 6; - - if(s->avctx->debug & FF_DEBUG_STARTCODE){ - av_log(s->avctx, AV_LOG_DEBUG, "APPx %8X\n", id); - } - - /* buggy AVID, it puts EOI only at every 10th frame */ - /* also this fourcc is used by non-avid files too, it holds some - informations, but it's always present in AVID creates files */ - if (id == ff_get_fourcc("AVI1")) - { - /* structure: - 4bytes AVI1 - 1bytes polarity - 1bytes always zero - 4bytes field_size - 4bytes field_size_less_padding - */ - s->buggy_avid = 1; -// if (s->first_picture) -// printf("mjpeg: workarounding buggy AVID\n"); - s->interlace_polarity = get_bits(&s->gb, 8); -#if 0 - skip_bits(&s->gb, 8); - skip_bits(&s->gb, 32); - skip_bits(&s->gb, 32); - len -= 10; -#endif -// if (s->interlace_polarity) -// printf("mjpeg: interlace polarity: %d\n", s->interlace_polarity); - goto out; - } - -// len -= 2; - - if (id == ff_get_fourcc("JFIF")) - { - int t_w, t_h, v1, v2; - skip_bits(&s->gb, 8); /* the trailing zero-byte */ - v1= get_bits(&s->gb, 8); - v2= get_bits(&s->gb, 8); - skip_bits(&s->gb, 8); - - s->avctx->sample_aspect_ratio.num= get_bits(&s->gb, 16); - s->avctx->sample_aspect_ratio.den= get_bits(&s->gb, 16); - - if (s->avctx->debug & FF_DEBUG_PICT_INFO) - av_log(s->avctx, AV_LOG_INFO, "mjpeg: JFIF header found (version: %x.%x) SAR=%d/%d\n", - v1, v2, - s->avctx->sample_aspect_ratio.num, - s->avctx->sample_aspect_ratio.den - ); - - t_w = get_bits(&s->gb, 8); - t_h = get_bits(&s->gb, 8); - if (t_w && t_h) - { - /* skip thumbnail */ - if (len-10-(t_w*t_h*3) > 0) - len -= t_w*t_h*3; - } - len -= 10; - goto out; - } - - if (id == ff_get_fourcc("Adob") && (get_bits(&s->gb, 8) == 'e')) - { - if (s->avctx->debug & FF_DEBUG_PICT_INFO) - av_log(s->avctx, AV_LOG_INFO, "mjpeg: Adobe header found\n"); - skip_bits(&s->gb, 16); /* version */ - skip_bits(&s->gb, 16); /* flags0 */ - skip_bits(&s->gb, 16); /* flags1 */ - skip_bits(&s->gb, 8); /* transform */ - len -= 7; - goto out; - } - - if (id == ff_get_fourcc("LJIF")){ - if (s->avctx->debug & FF_DEBUG_PICT_INFO) - av_log(s->avctx, AV_LOG_INFO, "Pegasus lossless jpeg header found\n"); - skip_bits(&s->gb, 16); /* version ? */ - skip_bits(&s->gb, 16); /* unknwon always 0? */ - skip_bits(&s->gb, 16); /* unknwon always 0? */ - skip_bits(&s->gb, 16); /* unknwon always 0? */ - switch( get_bits(&s->gb, 8)){ - case 1: - s->rgb= 1; - s->pegasus_rct=0; - break; - case 2: - s->rgb= 1; - s->pegasus_rct=1; - break; - default: - av_log(s->avctx, AV_LOG_ERROR, "unknown colorspace\n"); - } - len -= 9; - goto out; - } - - /* Apple MJPEG-A */ - if ((s->start_code == APP1) && (len > (0x28 - 8))) - { - id = (get_bits(&s->gb, 16) << 16) | get_bits(&s->gb, 16); - id = be2me_32(id); - len -= 4; - if (id == ff_get_fourcc("mjpg")) /* Apple MJPEG-A */ - { -#if 0 - skip_bits(&s->gb, 32); /* field size */ - skip_bits(&s->gb, 32); /* pad field size */ - skip_bits(&s->gb, 32); /* next off */ - skip_bits(&s->gb, 32); /* quant off */ - skip_bits(&s->gb, 32); /* huff off */ - skip_bits(&s->gb, 32); /* image off */ - skip_bits(&s->gb, 32); /* scan off */ - skip_bits(&s->gb, 32); /* data off */ -#endif - if (s->avctx->debug & FF_DEBUG_PICT_INFO) - av_log(s->avctx, AV_LOG_INFO, "mjpeg: Apple MJPEG-A header found\n"); - } - } - -out: - /* slow but needed for extreme adobe jpegs */ - if (len < 0) - av_log(s->avctx, AV_LOG_ERROR, "mjpeg: error, decode_app parser read over the end\n"); - while(--len > 0) - skip_bits(&s->gb, 8); - - return 0; -} - -static int mjpeg_decode_com(MJpegDecodeContext *s) -{ - int len = get_bits(&s->gb, 16); - if (len >= 2 && 8*len - 16 + get_bits_count(&s->gb) <= s->gb.size_in_bits) { - char *cbuf = av_malloc(len - 1); - if (cbuf) { - int i; - for (i = 0; i < len - 2; i++) - cbuf[i] = get_bits(&s->gb, 8); - if (i > 0 && cbuf[i-1] == '\n') - cbuf[i-1] = 0; - else - cbuf[i] = 0; - - if(s->avctx->debug & FF_DEBUG_PICT_INFO) - av_log(s->avctx, AV_LOG_INFO, "mjpeg comment: '%s'\n", cbuf); - - /* buggy avid, it puts EOI only at every 10th frame */ - if (!strcmp(cbuf, "AVID")) - { - s->buggy_avid = 1; - // if (s->first_picture) - // printf("mjpeg: workarounding buggy AVID\n"); - } - else if(!strcmp(cbuf, "CS=ITU601")){ - s->cs_itu601= 1; - } - - av_free(cbuf); - } - } - - return 0; -} - -#if 0 -static int valid_marker_list[] = -{ - /* 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f */ -/* 0 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -/* 1 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -/* 2 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -/* 3 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -/* 4 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -/* 5 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -/* 6 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -/* 7 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -/* 8 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -/* 9 */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -/* a */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -/* b */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -/* c */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -/* d */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -/* e */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -/* f */ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, -} -#endif - -/* return the 8 bit start code value and update the search - state. Return -1 if no start code found */ -static int find_marker(uint8_t **pbuf_ptr, uint8_t *buf_end) -{ - uint8_t *buf_ptr; - unsigned int v, v2; - int val; -#ifdef DEBUG - int skipped=0; -#endif - - buf_ptr = *pbuf_ptr; - while (buf_ptr < buf_end) { - v = *buf_ptr++; - v2 = *buf_ptr; - if ((v == 0xff) && (v2 >= 0xc0) && (v2 <= 0xfe) && buf_ptr < buf_end) { - val = *buf_ptr++; - goto found; - } -#ifdef DEBUG - skipped++; -#endif - } - val = -1; -found: -#ifdef DEBUG - av_log(NULL, AV_LOG_VERBOSE, "find_marker skipped %d bytes\n", skipped); -#endif - *pbuf_ptr = buf_ptr; - return val; -} - -static int mjpeg_decode_frame(AVCodecContext *avctx, - void *data, int *data_size, - uint8_t *buf, int buf_size) -{ - MJpegDecodeContext *s = avctx->priv_data; - uint8_t *buf_end, *buf_ptr; - int start_code; - AVFrame *picture = data; - - buf_ptr = buf; - buf_end = buf + buf_size; - while (buf_ptr < buf_end) { - /* find start next marker */ - start_code = find_marker(&buf_ptr, buf_end); - { - /* EOF */ - if (start_code < 0) { - goto the_end; - } else { - av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%d\n", start_code, buf_end - buf_ptr); - - if ((buf_end - buf_ptr) > s->buffer_size) - { - av_free(s->buffer); - s->buffer_size = buf_end-buf_ptr; - s->buffer = av_malloc(s->buffer_size + FF_INPUT_BUFFER_PADDING_SIZE); - av_log(avctx, AV_LOG_DEBUG, "buffer too small, expanding to %d bytes\n", - s->buffer_size); - } - - /* unescape buffer of SOS, use special treatment for JPEG-LS */ - if (start_code == SOS && !s->ls) - { - uint8_t *src = buf_ptr; - uint8_t *dst = s->buffer; - - while (src= 0xd0 && x <= 0xd7) - *(dst++) = x; - else if (x) - break; - } - } - init_get_bits(&s->gb, s->buffer, (dst - s->buffer)*8); - - av_log(avctx, AV_LOG_DEBUG, "escaping removed %d bytes\n", - (buf_end - buf_ptr) - (dst - s->buffer)); - } - else if(start_code == SOS && s->ls){ - uint8_t *src = buf_ptr; - uint8_t *dst = s->buffer; - int bit_count = 0; - int t = 0, b = 0; - PutBitContext pb; - - s->cur_scan++; - - /* find marker */ - while (src + t < buf_end){ - uint8_t x = src[t++]; - if (x == 0xff){ - while((src + t < buf_end) && x == 0xff) - x = src[t++]; - if (x & 0x80) { - t -= 2; - break; - } - } - } - bit_count = t * 8; - - init_put_bits(&pb, dst, t); - - /* unescape bitstream */ - while(b < t){ - uint8_t x = src[b++]; - put_bits(&pb, 8, x); - if(x == 0xFF){ - x = src[b++]; - put_bits(&pb, 7, x); - bit_count--; - } - } - flush_put_bits(&pb); - - init_get_bits(&s->gb, dst, bit_count); - } - else - init_get_bits(&s->gb, buf_ptr, (buf_end - buf_ptr)*8); - - s->start_code = start_code; - if(s->avctx->debug & FF_DEBUG_STARTCODE){ - av_log(avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code); - } - - /* process markers */ - if (start_code >= 0xd0 && start_code <= 0xd7) { - av_log(avctx, AV_LOG_DEBUG, "restart marker: %d\n", start_code&0x0f); - /* APP fields */ - } else if (start_code >= APP0 && start_code <= APP15) { - mjpeg_decode_app(s); - /* Comment */ - } else if (start_code == COM){ - mjpeg_decode_com(s); - } - - switch(start_code) { - case SOI: - s->restart_interval = 0; - - s->restart_count = 0; - /* nothing to do on SOI */ - break; - case DQT: - mjpeg_decode_dqt(s); - break; - case DHT: - if(mjpeg_decode_dht(s) < 0){ - av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n"); - return -1; - } - break; - case SOF0: - s->lossless=0; - s->ls=0; - s->progressive=0; - if (mjpeg_decode_sof(s) < 0) - return -1; - break; - case SOF2: - s->lossless=0; - s->ls=0; - s->progressive=1; - if (mjpeg_decode_sof(s) < 0) - return -1; - break; - case SOF3: - s->lossless=1; - s->ls=0; - s->progressive=0; - if (mjpeg_decode_sof(s) < 0) - return -1; - break; - case SOF48: - s->lossless=1; - s->ls=1; - s->progressive=0; - if (mjpeg_decode_sof(s) < 0) - return -1; - break; - case LSE: - if (decode_lse(s) < 0) - return -1; - break; - case EOI: - s->cur_scan = 0; - if ((s->buggy_avid && !s->interlaced) || s->restart_interval) - break; -eoi_parser: - { - if (s->interlaced) { - s->bottom_field ^= 1; - /* if not bottom field, do not output image yet */ - if (s->bottom_field) - goto not_the_end; - } - *picture = s->picture; - *data_size = sizeof(AVFrame); - - if(!s->lossless){ - picture->quality= FFMAX(FFMAX(s->qscale[0], s->qscale[1]), s->qscale[2]); - picture->qstride= 0; - picture->qscale_table= s->qscale_table; - memset(picture->qscale_table, picture->quality, (s->width+15)/16); - if(avctx->debug & FF_DEBUG_QP) - av_log(avctx, AV_LOG_DEBUG, "QP: %d\n", picture->quality); - picture->quality*= FF_QP2LAMBDA; - } - - goto the_end; - } - break; - case SOS: - mjpeg_decode_sos(s); - /* buggy avid puts EOI every 10-20th frame */ - /* if restart period is over process EOI */ - if ((s->buggy_avid && !s->interlaced) || s->restart_interval) - goto eoi_parser; - break; - case DRI: - mjpeg_decode_dri(s); - break; - case SOF1: - case SOF5: - case SOF6: - case SOF7: - case SOF9: - case SOF10: - case SOF11: - case SOF13: - case SOF14: - case SOF15: - case JPG: - av_log(avctx, AV_LOG_ERROR, "mjpeg: unsupported coding type (%x)\n", start_code); - break; -// default: -// printf("mjpeg: unsupported marker (%x)\n", start_code); -// break; - } - -not_the_end: - /* eof process start code */ - buf_ptr += (get_bits_count(&s->gb)+7)/8; - av_log(avctx, AV_LOG_DEBUG, "marker parser used %d bytes (%d bits)\n", - (get_bits_count(&s->gb)+7)/8, get_bits_count(&s->gb)); - } - } - } -the_end: - av_log(avctx, AV_LOG_DEBUG, "mjpeg decode frame unused %d bytes\n", buf_end - buf_ptr); -// return buf_end - buf_ptr; - return buf_ptr - buf; -} - -static int mjpegb_decode_frame(AVCodecContext *avctx, - void *data, int *data_size, - uint8_t *buf, int buf_size) -{ - MJpegDecodeContext *s = avctx->priv_data; - uint8_t *buf_end, *buf_ptr; - AVFrame *picture = data; - GetBitContext hgb; /* for the header */ - uint32_t dqt_offs, dht_offs, sof_offs, sos_offs, second_field_offs; - uint32_t field_size, sod_offs; - - buf_ptr = buf; - buf_end = buf + buf_size; - -read_header: - /* reset on every SOI */ - s->restart_interval = 0; - s->restart_count = 0; - s->mjpb_skiptosod = 0; - - init_get_bits(&hgb, buf_ptr, /*buf_size*/(buf_end - buf_ptr)*8); - - skip_bits(&hgb, 32); /* reserved zeros */ - - if (get_bits_long(&hgb, 32) != MKBETAG('m','j','p','g')) - { - av_log(avctx, AV_LOG_WARNING, "not mjpeg-b (bad fourcc)\n"); - return 0; - } - - field_size = get_bits_long(&hgb, 32); /* field size */ - av_log(avctx, AV_LOG_DEBUG, "field size: 0x%x\n", field_size); - skip_bits(&hgb, 32); /* padded field size */ - second_field_offs = get_bits_long(&hgb, 32); - av_log(avctx, AV_LOG_DEBUG, "second field offs: 0x%x\n", second_field_offs); - if (second_field_offs) - s->interlaced = 1; - - dqt_offs = get_bits_long(&hgb, 32); - av_log(avctx, AV_LOG_DEBUG, "dqt offs: 0x%x\n", dqt_offs); - if (dqt_offs) - { - init_get_bits(&s->gb, buf+dqt_offs, (buf_end - (buf+dqt_offs))*8); - s->start_code = DQT; - mjpeg_decode_dqt(s); - } - - dht_offs = get_bits_long(&hgb, 32); - av_log(avctx, AV_LOG_DEBUG, "dht offs: 0x%x\n", dht_offs); - if (dht_offs) - { - init_get_bits(&s->gb, buf+dht_offs, (buf_end - (buf+dht_offs))*8); - s->start_code = DHT; - mjpeg_decode_dht(s); - } - - sof_offs = get_bits_long(&hgb, 32); - av_log(avctx, AV_LOG_DEBUG, "sof offs: 0x%x\n", sof_offs); - if (sof_offs) - { - init_get_bits(&s->gb, buf+sof_offs, (buf_end - (buf+sof_offs))*8); - s->start_code = SOF0; - if (mjpeg_decode_sof(s) < 0) - return -1; - } - - sos_offs = get_bits_long(&hgb, 32); - av_log(avctx, AV_LOG_DEBUG, "sos offs: 0x%x\n", sos_offs); - sod_offs = get_bits_long(&hgb, 32); - av_log(avctx, AV_LOG_DEBUG, "sod offs: 0x%x\n", sod_offs); - if (sos_offs) - { -// init_get_bits(&s->gb, buf+sos_offs, (buf_end - (buf+sos_offs))*8); - init_get_bits(&s->gb, buf+sos_offs, field_size*8); - s->mjpb_skiptosod = (sod_offs - sos_offs - show_bits(&s->gb, 16)); - s->start_code = SOS; - mjpeg_decode_sos(s); - } - - if (s->interlaced) { - s->bottom_field ^= 1; - /* if not bottom field, do not output image yet */ - if (s->bottom_field && second_field_offs) - { - buf_ptr = buf + second_field_offs; - second_field_offs = 0; - goto read_header; - } - } - - //XXX FIXME factorize, this looks very similar to the EOI code - - *picture= s->picture; - *data_size = sizeof(AVFrame); - - if(!s->lossless){ - picture->quality= FFMAX(FFMAX(s->qscale[0], s->qscale[1]), s->qscale[2]); - picture->qstride= 0; - picture->qscale_table= s->qscale_table; - memset(picture->qscale_table, picture->quality, (s->width+15)/16); - if(avctx->debug & FF_DEBUG_QP) - av_log(avctx, AV_LOG_DEBUG, "QP: %d\n", picture->quality); - picture->quality*= FF_QP2LAMBDA; - } - - return buf_ptr - buf; -} - -#include "sp5x.h" - -static int sp5x_decode_frame(AVCodecContext *avctx, - void *data, int *data_size, - uint8_t *buf, int buf_size) -{ -#if 0 - MJpegDecodeContext *s = avctx->priv_data; -#endif - const int qscale = 5; - uint8_t *buf_ptr, *buf_end, *recoded; - int i = 0, j = 0; - - if (!avctx->width || !avctx->height) - return -1; - - buf_ptr = buf; - buf_end = buf + buf_size; - -#if 1 - recoded = av_mallocz(buf_size + 1024); - if (!recoded) - return -1; - - /* SOI */ - recoded[j++] = 0xFF; - recoded[j++] = 0xD8; - - memcpy(recoded+j, &sp5x_data_dqt[0], sizeof(sp5x_data_dqt)); - memcpy(recoded+j+5, &sp5x_quant_table[qscale * 2], 64); - memcpy(recoded+j+70, &sp5x_quant_table[(qscale * 2) + 1], 64); - j += sizeof(sp5x_data_dqt); - - memcpy(recoded+j, &sp5x_data_dht[0], sizeof(sp5x_data_dht)); - j += sizeof(sp5x_data_dht); - - memcpy(recoded+j, &sp5x_data_sof[0], sizeof(sp5x_data_sof)); - recoded[j+5] = (avctx->coded_height >> 8) & 0xFF; - recoded[j+6] = avctx->coded_height & 0xFF; - recoded[j+7] = (avctx->coded_width >> 8) & 0xFF; - recoded[j+8] = avctx->coded_width & 0xFF; - j += sizeof(sp5x_data_sof); - - memcpy(recoded+j, &sp5x_data_sos[0], sizeof(sp5x_data_sos)); - j += sizeof(sp5x_data_sos); - - for (i = 14; i < buf_size && j < buf_size+1024-2; i++) - { - recoded[j++] = buf[i]; - if (buf[i] == 0xff) - recoded[j++] = 0; - } - - /* EOI */ - recoded[j++] = 0xFF; - recoded[j++] = 0xD9; - - i = mjpeg_decode_frame(avctx, data, data_size, recoded, j); - - av_free(recoded); - -#else - /* SOF */ - s->bits = 8; - s->width = avctx->coded_width; - s->height = avctx->coded_height; - s->nb_components = 3; - s->component_id[0] = 0; - s->h_count[0] = 2; - s->v_count[0] = 2; - s->quant_index[0] = 0; - s->component_id[1] = 1; - s->h_count[1] = 1; - s->v_count[1] = 1; - s->quant_index[1] = 1; - s->component_id[2] = 2; - s->h_count[2] = 1; - s->v_count[2] = 1; - s->quant_index[2] = 1; - s->h_max = 2; - s->v_max = 2; - - s->qscale_table = av_mallocz((s->width+15)/16); - avctx->pix_fmt = s->cs_itu601 ? PIX_FMT_YUV420P : PIX_FMT_YUVJ420; - s->interlaced = 0; - - s->picture.reference = 0; - if (avctx->get_buffer(avctx, &s->picture) < 0) - { - av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); - return -1; - } - - s->picture.pict_type = I_TYPE; - s->picture.key_frame = 1; - - for (i = 0; i < 3; i++) - s->linesize[i] = s->picture.linesize[i] << s->interlaced; - - /* DQT */ - for (i = 0; i < 64; i++) - { - j = s->scantable.permutated[i]; - s->quant_matrixes[0][j] = sp5x_quant_table[(qscale * 2) + i]; - } - s->qscale[0] = FFMAX( - s->quant_matrixes[0][s->scantable.permutated[1]], - s->quant_matrixes[0][s->scantable.permutated[8]]) >> 1; - - for (i = 0; i < 64; i++) - { - j = s->scantable.permutated[i]; - s->quant_matrixes[1][j] = sp5x_quant_table[(qscale * 2) + 1 + i]; - } - s->qscale[1] = FFMAX( - s->quant_matrixes[1][s->scantable.permutated[1]], - s->quant_matrixes[1][s->scantable.permutated[8]]) >> 1; - - /* DHT */ - - /* SOS */ - s->comp_index[0] = 0; - s->nb_blocks[0] = s->h_count[0] * s->v_count[0]; - s->h_scount[0] = s->h_count[0]; - s->v_scount[0] = s->v_count[0]; - s->dc_index[0] = 0; - s->ac_index[0] = 0; - - s->comp_index[1] = 1; - s->nb_blocks[1] = s->h_count[1] * s->v_count[1]; - s->h_scount[1] = s->h_count[1]; - s->v_scount[1] = s->v_count[1]; - s->dc_index[1] = 1; - s->ac_index[1] = 1; - - s->comp_index[2] = 2; - s->nb_blocks[2] = s->h_count[2] * s->v_count[2]; - s->h_scount[2] = s->h_count[2]; - s->v_scount[2] = s->v_count[2]; - s->dc_index[2] = 1; - s->ac_index[2] = 1; - - for (i = 0; i < 3; i++) - s->last_dc[i] = 1024; - - s->mb_width = (s->width * s->h_max * 8 -1) / (s->h_max * 8); - s->mb_height = (s->height * s->v_max * 8 -1) / (s->v_max * 8); - - init_get_bits(&s->gb, buf+14, (buf_size-14)*8); - - return mjpeg_decode_scan(s); -#endif - - return i; -} - -static int mjpeg_decode_end(AVCodecContext *avctx) -{ - MJpegDecodeContext *s = avctx->priv_data; - int i, j; - - av_free(s->buffer); - av_free(s->qscale_table); - - for(i=0;i<2;i++) { - for(j=0;j<4;j++) - free_vlc(&s->vlcs[i][j]); - } - return 0; -} - -static int mjpega_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args, - uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size, int keyframe) -{ - uint8_t *poutbufp; - int i; - - if (avctx->codec_id != CODEC_ID_MJPEG) { - av_log(avctx, AV_LOG_ERROR, "mjpega bitstream filter only applies to mjpeg codec\n"); - return 0; - } - - *poutbuf_size = 0; - *poutbuf = av_malloc(buf_size + 44 + FF_INPUT_BUFFER_PADDING_SIZE); - poutbufp = *poutbuf; - bytestream_put_byte(&poutbufp, 0xff); - bytestream_put_byte(&poutbufp, SOI); - bytestream_put_byte(&poutbufp, 0xff); - bytestream_put_byte(&poutbufp, APP1); - bytestream_put_be16(&poutbufp, 42); /* size */ - bytestream_put_be32(&poutbufp, 0); - bytestream_put_buffer(&poutbufp, "mjpg", 4); - bytestream_put_be32(&poutbufp, buf_size + 44); /* field size */ - bytestream_put_be32(&poutbufp, buf_size + 44); /* pad field size */ - bytestream_put_be32(&poutbufp, 0); /* next ptr */ - - for (i = 0; i < buf_size - 1; i++) { - if (buf[i] == 0xff) { - switch (buf[i + 1]) { - case DQT: /* quant off */ - case DHT: /* huff off */ - case SOF0: /* image off */ - bytestream_put_be32(&poutbufp, i + 46); - break; - case SOS: - bytestream_put_be32(&poutbufp, i + 46); /* scan off */ - bytestream_put_be32(&poutbufp, i + 46 + AV_RB16(buf + i + 2)); /* data off */ - bytestream_put_buffer(&poutbufp, buf + 2, buf_size - 2); /* skip already written SOI */ - *poutbuf_size = poutbufp - *poutbuf; - return 1; - case APP1: - if (i + 8 < buf_size && AV_RL32(buf + i + 8) == ff_get_fourcc("mjpg")) { - av_log(avctx, AV_LOG_ERROR, "bitstream already formatted\n"); - memcpy(*poutbuf, buf, buf_size); - *poutbuf_size = buf_size; - return 1; - } - } - } - } - av_freep(poutbuf); - av_log(avctx, AV_LOG_ERROR, "could not find SOS marker in bitstream\n"); - return 0; -} - -AVCodec mjpeg_decoder = { - "mjpeg", - CODEC_TYPE_VIDEO, - CODEC_ID_MJPEG, - sizeof(MJpegDecodeContext), - mjpeg_decode_init, - NULL, - mjpeg_decode_end, - mjpeg_decode_frame, - CODEC_CAP_DR1, - NULL -}; - -AVCodec mjpegb_decoder = { - "mjpegb", - CODEC_TYPE_VIDEO, - CODEC_ID_MJPEGB, - sizeof(MJpegDecodeContext), - mjpeg_decode_init, - NULL, - mjpeg_decode_end, - mjpegb_decode_frame, - CODEC_CAP_DR1, - NULL -}; - -AVCodec sp5x_decoder = { - "sp5x", - CODEC_TYPE_VIDEO, - CODEC_ID_SP5X, - sizeof(MJpegDecodeContext), - mjpeg_decode_init, - NULL, - mjpeg_decode_end, - sp5x_decode_frame, - CODEC_CAP_DR1, - NULL -}; - -#ifdef CONFIG_ENCODERS -AVCodec ljpeg_encoder = { //FIXME avoid MPV_* lossless jpeg shouldnt need them - "ljpeg", - CODEC_TYPE_VIDEO, - CODEC_ID_LJPEG, - sizeof(MpegEncContext), - MPV_encode_init, - encode_picture_lossless, - MPV_encode_end, -}; -#endif - -AVCodecParser mjpeg_parser = { - { CODEC_ID_MJPEG }, - sizeof(ParseContext), - NULL, - jpeg_parse, - ff_parse_close, -}; - -AVBitStreamFilter mjpega_dump_header_bsf = { - "mjpegadump", - 0, - mjpega_dump_header, -};