X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmjpegenc.c;h=9aeb68fdc65f955aebe82dd3cfe347b62589f848;hb=88bd7fdc821aaa0cbcf44cf075c62aaa42121e3f;hp=11967fe01a9e04e5867abc77a2862413982a1dd1;hpb=4922a5b0ee9108e406b8b14356f19851702604d1;p=ffmpeg diff --git a/libavcodec/mjpegenc.c b/libavcodec/mjpegenc.c index 11967fe01a9..9aeb68fdc65 100644 --- a/libavcodec/mjpegenc.c +++ b/libavcodec/mjpegenc.c @@ -1,32 +1,32 @@ /* * MJPEG encoder - * 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 mjpegenc.c + * @file * MJPEG encoder. */ @@ -37,25 +37,14 @@ #include "dsputil.h" #include "mpegvideo.h" #include "mjpeg.h" +#include "mjpegenc.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; - -int mjpeg_init(MpegEncContext *s) +av_cold int ff_mjpeg_encode_init(MpegEncContext *s) { MJpegContext *m; @@ -67,28 +56,28 @@ int mjpeg_init(MpegEncContext *s) 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); + ff_mjpeg_build_huffman_codes(m->huff_size_dc_luminance, + m->huff_code_dc_luminance, + avpriv_mjpeg_bits_dc_luminance, + avpriv_mjpeg_val_dc); + ff_mjpeg_build_huffman_codes(m->huff_size_dc_chrominance, + m->huff_code_dc_chrominance, + avpriv_mjpeg_bits_dc_chrominance, + avpriv_mjpeg_val_dc); + ff_mjpeg_build_huffman_codes(m->huff_size_ac_luminance, + m->huff_code_ac_luminance, + avpriv_mjpeg_bits_ac_luminance, + avpriv_mjpeg_val_ac_luminance); + ff_mjpeg_build_huffman_codes(m->huff_size_ac_chrominance, + m->huff_code_ac_chrominance, + avpriv_mjpeg_bits_ac_chrominance, + avpriv_mjpeg_val_ac_chrominance); s->mjpeg_ctx = m; return 0; } -void mjpeg_close(MpegEncContext *s) +void ff_mjpeg_encode_close(MpegEncContext *s) { av_free(s->mjpeg_ctx); } @@ -146,16 +135,19 @@ static void jpeg_table_header(MpegEncContext *s) /* huffman table */ put_marker(p, DHT); flush_put_bits(p); - ptr = pbBufPtr(p); + ptr = put_bits_ptr(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; + size += put_huffman_table(s, 0, 0, avpriv_mjpeg_bits_dc_luminance, + avpriv_mjpeg_val_dc); + size += put_huffman_table(s, 0, 1, avpriv_mjpeg_bits_dc_chrominance, + avpriv_mjpeg_val_dc); + + size += put_huffman_table(s, 1, 0, avpriv_mjpeg_bits_ac_luminance, + avpriv_mjpeg_val_ac_luminance); + size += put_huffman_table(s, 1, 1, avpriv_mjpeg_bits_ac_chrominance, + avpriv_mjpeg_val_ac_chrominance); + AV_WB16(ptr, size); } static void jpeg_put_comments(MpegEncContext *s) @@ -169,7 +161,7 @@ static void jpeg_put_comments(MpegEncContext *s) /* JFIF header */ put_marker(p, APP0); put_bits(p, 16, 16); - ff_put_string(p, "JFIF", 1); /* this puts the trailing zero-byte too */ + avpriv_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); @@ -182,31 +174,29 @@ static void jpeg_put_comments(MpegEncContext *s) if(!(s->flags & CODEC_FLAG_BITEXACT)){ put_marker(p, COM); flush_put_bits(p); - ptr = pbBufPtr(p); + ptr = put_bits_ptr(p); put_bits(p, 16, 0); /* patched later */ - ff_put_string(p, LIBAVCODEC_IDENT, 1); + avpriv_put_string(p, LIBAVCODEC_IDENT, 1); size = strlen(LIBAVCODEC_IDENT)+3; - ptr[0] = size >> 8; - ptr[1] = size; + AV_WB16(ptr, size); } - if( s->avctx->pix_fmt == PIX_FMT_YUV420P - ||s->avctx->pix_fmt == PIX_FMT_YUV422P - ||s->avctx->pix_fmt == PIX_FMT_YUV444P){ + if( s->avctx->pix_fmt == AV_PIX_FMT_YUV420P + ||s->avctx->pix_fmt == AV_PIX_FMT_YUV422P + ||s->avctx->pix_fmt == AV_PIX_FMT_YUV444P){ put_marker(p, COM); flush_put_bits(p); - ptr = pbBufPtr(p); + ptr = put_bits_ptr(p); put_bits(p, 16, 0); /* patched later */ - ff_put_string(p, "CS=ITU601", 1); + avpriv_put_string(p, "CS=ITU601", 1); size = strlen("CS=ITU601")+3; - ptr[0] = size >> 8; - ptr[1] = size; + AV_WB16(ptr, size); } } -void mjpeg_picture_header(MpegEncContext *s) +void ff_mjpeg_encode_picture_header(MpegEncContext *s) { - const int lossless= s->avctx->codec_id != CODEC_ID_MJPEG; + const int lossless= s->avctx->codec_id != AV_CODEC_ID_MJPEG; put_marker(&s->pb, SOI); @@ -215,13 +205,13 @@ void mjpeg_picture_header(MpegEncContext *s) 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 AV_CODEC_ID_MJPEG: put_marker(&s->pb, SOF0 ); break; + case AV_CODEC_ID_LJPEG: put_marker(&s->pb, SOF3 ); break; default: assert(0); } put_bits(&s->pb, 16, 17); - if(lossless && s->avctx->pix_fmt == PIX_FMT_RGB32) + if(lossless && s->avctx->pix_fmt == AV_PIX_FMT_BGRA) put_bits(&s->pb, 8, 9); /* 9 bits/component RCT */ else put_bits(&s->pb, 8, 8); /* 8 bits/component */ @@ -278,8 +268,8 @@ void mjpeg_picture_header(MpegEncContext *s) put_bits(&s->pb, 8, lossless ? 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 AV_CODEC_ID_MJPEG: put_bits(&s->pb, 8, 63); break; /* Se (not used) */ + case AV_CODEC_ID_LJPEG: put_bits(&s->pb, 8, 0); break; /* not used */ default: assert(0); } @@ -323,17 +313,13 @@ static void escape_FF(MpegEncContext *s, int start) if(ff_count==0) return; - /* skip put bits */ - for(i=0; ipb, 32, 0); - put_bits(&s->pb, (ff_count-i)*8, 0); flush_put_bits(&s->pb); + skip_put_bytes(&s->pb, ff_count); 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--; } @@ -342,16 +328,16 @@ static void escape_FF(MpegEncContext *s, int start) } } -void ff_mjpeg_stuffing(PutBitContext * pbc) +void ff_mjpeg_encode_stuffing(PutBitContext * pbc) { int length; length= (-put_bits_count(pbc))&7; if(length) put_bits(pbc, length, (1<pb); + ff_mjpeg_encode_stuffing(&s->pb); flush_put_bits(&s->pb); assert((s->header_bits&7)==0); @@ -361,8 +347,8 @@ void mjpeg_picture_trailer(MpegEncContext *s) put_marker(&s->pb, EOI); } -static inline void mjpeg_encode_dc(MpegEncContext *s, int val, - uint8_t *huff_size, uint16_t *huff_code) +void ff_mjpeg_encode_dc(MpegEncContext *s, int val, + uint8_t *huff_size, uint16_t *huff_code) { int mant, nbits; @@ -379,11 +365,11 @@ static inline void mjpeg_encode_dc(MpegEncContext *s, int val, put_bits(&s->pb, huff_size[nbits], huff_code[nbits]); - put_bits(&s->pb, nbits, mant & ((1 << nbits) - 1)); + put_sbits(&s->pb, nbits, mant); } } -static void encode_block(MpegEncContext *s, DCTELEM *block, int n) +static void encode_block(MpegEncContext *s, int16_t *block, int n) { int mant, nbits, code, i, j; int component, dc, run, last_index, val; @@ -396,11 +382,11 @@ static void encode_block(MpegEncContext *s, DCTELEM *block, int n) 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); + ff_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); + ff_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; } @@ -431,7 +417,7 @@ static void encode_block(MpegEncContext *s, DCTELEM *block, int n) put_bits(&s->pb, huff_size_ac[code], huff_code_ac[code]); - put_bits(&s->pb, nbits, mant & ((1 << nbits) - 1)); + put_sbits(&s->pb, nbits, mant); run = 0; } } @@ -441,8 +427,7 @@ static void encode_block(MpegEncContext *s, DCTELEM *block, int n) put_bits(&s->pb, huff_size_ac[0], huff_code_ac[0]); } -void mjpeg_encode_mb(MpegEncContext *s, - DCTELEM block[6][64]) +void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[6][64]) { int i; for(i=0;i<5;i++) { @@ -455,163 +440,20 @@ void mjpeg_encode_mb(MpegEncContext *s, 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; + s->i_tex_bits += get_bits_diff(s); } - -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, +AVCodec ff_mjpeg_encoder = { + .name = "mjpeg", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_MJPEG, + .priv_data_size = sizeof(MpegEncContext), + .init = ff_MPV_encode_init, + .encode2 = ff_MPV_encode_picture, + .close = ff_MPV_encode_end, + .pix_fmts = (const enum AVPixelFormat[]){ + AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_NONE + }, + .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"), };