diff options
author | Daniel Huang <dtvrij74@gmail.com> | 2012-01-08 23:14:37 +0400 |
---|---|---|
committer | Diego Biurrun <diego@biurrun.de> | 2012-01-09 02:33:00 +0400 |
commit | 8549cf073b6e292bb2812537d08d7e34e1f0a06a (patch) | |
tree | 31f0856b6adc20b0f6cb7991cfee76e7038ec952 /libavcodec/mjpegdec.c | |
parent | 999484c9fbc38f81df300ed356cf0f6ce26c949d (diff) |
mjpegdec: K&R formatting cosmetics
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Diffstat (limited to 'libavcodec/mjpegdec.c')
-rw-r--r-- | libavcodec/mjpegdec.c | 1409 |
1 files changed, 726 insertions, 683 deletions
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index 7a85c16d95..2ae502ddeb 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -30,7 +30,7 @@ * MJPEG decoder. */ -//#define DEBUG +// #define DEBUG #include <assert.h> #include "libavutil/imgutils.h" @@ -42,8 +42,9 @@ #include "jpeglsdec.h" -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) +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]; uint16_t huff_code[256]; @@ -55,15 +56,18 @@ static int build_vlc(VLC *vlc, const uint8_t *bits_table, const uint8_t *val_tab memset(huff_size, 0, sizeof(huff_size)); ff_mjpeg_build_huffman_codes(huff_size, huff_code, bits_table, val_table); - for(i=0; i<256; i++) - huff_sym[i]= i + 16*is_ac; + for (i = 0; i < 256; i++) + huff_sym[i] = i + 16 * is_ac; - if(is_ac) huff_sym[0]= 16*256; + if (is_ac) + huff_sym[0] = 16 * 256; - return init_vlc_sparse(vlc, 9, nb_codes, huff_size, 1, 1, huff_code, 2, 2, huff_sym, 2, 2, use_static); + return init_vlc_sparse(vlc, 9, nb_codes, huff_size, 1, 1, + huff_code, 2, 2, huff_sym, 2, 2, use_static); } -static void build_basic_mjpeg_vlc(MJpegDecodeContext * s) { +static void build_basic_mjpeg_vlc(MJpegDecodeContext *s) +{ build_vlc(&s->vlcs[0][0], ff_mjpeg_bits_dc_luminance, ff_mjpeg_val_dc, 12, 0, 0); build_vlc(&s->vlcs[0][1], ff_mjpeg_bits_dc_chrominance, @@ -88,11 +92,11 @@ av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx) s->avctx = avctx; dsputil_init(&s->dsp, avctx); ff_init_scantable(s->dsp.idct_permutation, &s->scantable, ff_zigzag_direct); - s->buffer_size = 0; - s->buffer = NULL; - s->start_code = -1; + s->buffer_size = 0; + s->buffer = NULL; + s->start_code = -1; s->first_picture = 1; - s->org_height = avctx->coded_height; + s->org_height = avctx->coded_height; avctx->chroma_sample_location = AVCHROMA_LOC_CENTER; build_basic_mjpeg_vlc(s); @@ -101,17 +105,17 @@ av_cold int ff_mjpeg_decode_init(AVCodecContext *avctx) if (avctx->flags & CODEC_FLAG_EXTERN_HUFF) s->extern_huff = 1; #endif - if (s->extern_huff) - { + if (s->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); + init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size * 8); if (ff_mjpeg_decode_dht(s)) { - av_log(avctx, AV_LOG_ERROR, "mjpeg: error using external huffman table\n"); + av_log(avctx, AV_LOG_ERROR, + "mjpeg: error using external huffman table\n"); return AVERROR_INVALIDDATA; } } if (avctx->field_order == AV_FIELD_BB) { /* quicktime icefloe 019 */ - s->interlace_polarity = 1; /* bottom field first */ + s->interlace_polarity = 1; /* bottom field first */ av_log(avctx, AV_LOG_DEBUG, "mjpeg bottom field first\n"); } if (avctx->codec->id == CODEC_ID_AMV) @@ -130,8 +134,7 @@ int ff_mjpeg_decode_dqt(MJpegDecodeContext *s) while (len >= 65) { /* only 8 bit precision handled */ - if (get_bits(&s->gb, 4) != 0) - { + if (get_bits(&s->gb, 4) != 0) { av_log(s->avctx, AV_LOG_ERROR, "dqt: 16bit precision\n"); return -1; } @@ -140,19 +143,18 @@ int ff_mjpeg_decode_dqt(MJpegDecodeContext *s) return -1; av_log(s->avctx, AV_LOG_DEBUG, "index=%d\n", index); /* read quant table */ - for(i=0;i<64;i++) { + 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]); + // 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; } @@ -175,7 +177,7 @@ int ff_mjpeg_decode_dht(MJpegDecodeContext *s) if (index >= 4) return -1; n = 0; - for(i=1;i<=16;i++) { + for (i = 1; i <= 16; i++) { bits_table[i] = get_bits(&s->gb, 8); n += bits_table[i]; } @@ -184,7 +186,7 @@ int ff_mjpeg_decode_dht(MJpegDecodeContext *s) return -1; code_max = 0; - for(i=0;i<n;i++) { + for (i = 0; i < n; i++) { v = get_bits(&s->gb, 8); if (v > code_max) code_max = v; @@ -196,15 +198,15 @@ int ff_mjpeg_decode_dht(MJpegDecodeContext *s) 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){ + if (build_vlc(&s->vlcs[class][index], bits_table, val_table, + code_max + 1, 0, class > 0) < 0) return -1; - } - if(class>0){ + if (class > 0) { free_vlc(&s->vlcs[2][index]); - if(build_vlc(&s->vlcs[2][index], bits_table, val_table, code_max + 1, 0, 0) < 0){ - return -1; - } + if (build_vlc(&s->vlcs[2][index], bits_table, val_table, + code_max + 1, 0, 0) < 0) + return -1; } } return 0; @@ -215,44 +217,47 @@ int ff_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); + 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->pegasus_rct) + s->bits = 9; + if (s->bits == 9 && !s->pegasus_rct) + s->rct = 1; // FIXME ugly - if (s->bits != 8 && !s->lossless){ + 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); + width = get_bits(&s->gb, 16); - //HACK for odd_height.mov - if(s->interlaced && s->width == width && s->height == height + 1) + // HACK for odd_height.mov + if (s->interlaced && s->width == width && s->height == height + 1) height= s->height; av_log(s->avctx, AV_LOG_DEBUG, "sof0: picture: %dx%d\n", width, height); - if(av_image_check_size(width, height, 0, s->avctx)) + if (av_image_check_size(width, height, 0, s->avctx)) 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"); + 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;i<nb_components;i++) { + s->h_max = 1; + s->v_max = 1; + for (i = 0; i < nb_components; i++) { /* component id */ s->component_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); + 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]; @@ -261,45 +266,47 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s) 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]); + 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"); + 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 (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; + s->width = width; + s->height = height; s->interlaced = 0; /* test interlaced mode */ - if (s->first_picture && + if (s->first_picture && s->org_height != 0 && s->height < ((s->org_height * 3) / 4)) { - s->interlaced = 1; - s->bottom_field = s->interlace_polarity; + s->interlaced = 1; + s->bottom_field = s->interlace_polarity; s->picture_ptr->interlaced_frame = 1; - s->picture_ptr->top_field_first = !s->interlace_polarity; + s->picture_ptr->top_field_first = !s->interlace_polarity; height *= 2; } avcodec_set_dimensions(s->avctx, width, height); - s->qscale_table= av_mallocz((s->width+15)/16); - + s->qscale_table = av_mallocz((s->width + 15) / 16); s->first_picture = 0; } - if(s->interlaced && (s->bottom_field == !s->interlace_polarity)) + if (s->interlaced && (s->bottom_field == !s->interlace_polarity)) return 0; /* XXX: not complete test ! */ @@ -308,19 +315,20 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s) (s->h_count[2] << 12) | (s->v_count[2] << 8) | (s->h_count[3] << 4) | s->v_count[3]; av_log(s->avctx, AV_LOG_DEBUG, "pix fmt id %x\n", pix_fmt_id); - //NOTE we do not allocate pictures large enough for the possible padding of h/v_count being 4 - if(!(pix_fmt_id & 0xD0D0D0D0)) - pix_fmt_id-= (pix_fmt_id & 0xF0F0F0F0)>>1; - if(!(pix_fmt_id & 0x0D0D0D0D)) - pix_fmt_id-= (pix_fmt_id & 0x0F0F0F0F)>>1; - - switch(pix_fmt_id){ + /* NOTE we do not allocate pictures large enough for the possible + * padding of h/v_count being 4 */ + if (!(pix_fmt_id & 0xD0D0D0D0)) + pix_fmt_id -= (pix_fmt_id & 0xF0F0F0F0) >> 1; + if (!(pix_fmt_id & 0x0D0D0D0D)) + pix_fmt_id -= (pix_fmt_id & 0x0F0F0F0F) >> 1; + + switch (pix_fmt_id) { case 0x11111100: - if(s->rgb){ + if (s->rgb) s->avctx->pix_fmt = PIX_FMT_BGRA; - }else + else s->avctx->pix_fmt = s->cs_itu601 ? PIX_FMT_YUV444P : PIX_FMT_YUVJ444P; - assert(s->nb_components==3); + assert(s->nb_components == 3); break; case 0x11000000: s->avctx->pix_fmt = PIX_FMT_GRAY8; @@ -338,47 +346,46 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s) av_log(s->avctx, AV_LOG_ERROR, "Unhandled pixel format 0x%x\n", pix_fmt_id); return -1; } - if(s->ls){ - if(s->nb_components > 1) + if (s->ls) { + if (s->nb_components > 1) s->avctx->pix_fmt = PIX_FMT_RGB24; - else if(s->bits <= 8) + else if (s->bits <= 8) s->avctx->pix_fmt = PIX_FMT_GRAY8; else s->avctx->pix_fmt = PIX_FMT_GRAY16; } - if(s->picture_ptr->data[0]) + if (s->picture_ptr->data[0]) s->avctx->release_buffer(s->avctx, s->picture_ptr); - if(s->avctx->get_buffer(s->avctx, s->picture_ptr) < 0){ + if (s->avctx->get_buffer(s->avctx, s->picture_ptr) < 0) { av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n"); return -1; } - s->picture_ptr->pict_type= AV_PICTURE_TYPE_I; - s->picture_ptr->key_frame= 1; - s->got_picture = 1; + s->picture_ptr->pict_type = AV_PICTURE_TYPE_I; + s->picture_ptr->key_frame = 1; + s->got_picture = 1; - for(i=0; i<3; i++){ - s->linesize[i]= s->picture_ptr->linesize[i] << s->interlaced; - } + for (i = 0; i < 3; i++) + s->linesize[i] = s->picture_ptr->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); +// 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))) - { + 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){ - int bw = (width + s->h_max*8-1) / (s->h_max*8); - int bh = (height + s->v_max*8-1) / (s->v_max*8); - for(i=0; i<s->nb_components; i++) { + if (s->progressive) { + int bw = (width + s->h_max * 8 - 1) / (s->h_max * 8); + int bh = (height + s->v_max * 8 - 1) / (s->v_max * 8); + for (i = 0; i < s->nb_components; i++) { int size = bw * bh * s->h_count[i] * s->v_count[i]; av_freep(&s->blocks[i]); av_freep(&s->last_nnz[i]); - s->blocks[i] = av_malloc(size * sizeof(**s->blocks)); - s->last_nnz[i] = av_mallocz(size * sizeof(**s->last_nnz)); + s->blocks[i] = av_malloc(size * sizeof(**s->blocks)); + s->last_nnz[i] = av_mallocz(size * sizeof(**s->last_nnz)); s->block_stride[i] = bw * s->h_count[i]; } memset(s->coefs_finished, 0, sizeof(s->coefs_finished)); @@ -390,22 +397,22 @@ 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]); + 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) + 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) +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; @@ -427,14 +434,14 @@ static int decode_block(MJpegDecodeContext *s, DCTELEM *block, i += ((unsigned)code) >> 4; code &= 0xf; - if(code){ - if(code > MIN_CACHE_BITS - 16){ + if (code) { + 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; + 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); @@ -443,17 +450,18 @@ static int decode_block(MJpegDecodeContext *s, DCTELEM *block, av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); return -1; } - j = s->scantable.permutated[i]; + j = s->scantable.permutated[i]; block[j] = level * quant_matrix[j]; } - }while(i<63); + } while (i < 63); CLOSE_READER(re, &s->gb);} return 0; } -static int decode_dc_progressive(MJpegDecodeContext *s, DCTELEM *block, int component, - int dc_index, int16_t *quant_matrix, int Al) +static int decode_dc_progressive(MJpegDecodeContext *s, DCTELEM *block, + int component, int dc_index, + int16_t *quant_matrix, int Al) { int val; s->dsp.clear_block(block); @@ -469,113 +477,121 @@ static int decode_dc_progressive(MJpegDecodeContext *s, DCTELEM *block, int comp } /* decode block and dequantize - progressive JPEG version */ -static int decode_block_progressive(MJpegDecodeContext *s, DCTELEM *block, uint8_t *last_nnz, - int ac_index, int16_t *quant_matrix, +static int decode_block_progressive(MJpegDecodeContext *s, DCTELEM *block, + uint8_t *last_nnz, int ac_index, + int16_t *quant_matrix, int ss, int se, int Al, int *EOBRUN) { int code, i, j, level, val, run; - if(*EOBRUN){ + 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[2][ac_index].table, 9, 2); - run = ((unsigned) code) >> 4; - code &= 0xF; - if(code) { - i += run; - 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; - } + { + OPEN_READER(re, &s->gb); + for (i = ss; ; i++) { + UPDATE_CACHE(re, &s->gb); + GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2); - LAST_SKIP_BITS(re, &s->gb, code); + run = ((unsigned) code) >> 4; + code &= 0xF; + if (code) { + i += run; + if (code > MIN_CACHE_BITS - 16) + UPDATE_CACHE(re, &s->gb); - if (i >= se) { - if(i == se){ - j = s->scantable.permutated[se]; - block[j] = level * quant_matrix[j] << Al; - break; + { + int cache = GET_CACHE(re, &s->gb); + int sign = (~cache) >> 31; + level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign; } - 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{ - if(run == 0xF){// ZRL - skip 15 coefficients - i += 15; + + LAST_SKIP_BITS(re, &s->gb, code); + if (i >= se) { - av_log(s->avctx, AV_LOG_ERROR, "ZRL overflow: %d\n", i); + 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; } - }else{ - val = (1 << run); - if(run){ - UPDATE_CACHE(re, &s->gb); - val += NEG_USR32(GET_CACHE(re, &s->gb), run); - LAST_SKIP_BITS(re, &s->gb, run); + j = s->scantable.permutated[i]; + block[j] = level * quant_matrix[j] << Al; + } else { + if (run == 0xF) {// ZRL - skip 15 coefficients + i += 15; + if (i >= se) { + av_log(s->avctx, AV_LOG_ERROR, "ZRL overflow: %d\n", i); + return -1; + } + } else { + val = (1 << run); + if (run) { + UPDATE_CACHE(re, &s->gb); + val += NEG_USR32(GET_CACHE(re, &s->gb), run); + LAST_SKIP_BITS(re, &s->gb, run); + } + *EOBRUN = val - 1; + break; } - *EOBRUN = val - 1; - break; } } + CLOSE_READER(re, &s->gb); } - CLOSE_READER(re, &s->gb);} - if(i > *last_nnz) + + if (i > *last_nnz) *last_nnz = i; + return 0; } -#define REFINE_BIT(j) {\ - UPDATE_CACHE(re, &s->gb);\ - sign = block[j]>>15;\ - block[j] += SHOW_UBITS(re, &s->gb, 1) * ((quant_matrix[j]^sign)-sign) << Al;\ - LAST_SKIP_BITS(re, &s->gb, 1);\ +#define REFINE_BIT(j) { \ + UPDATE_CACHE(re, &s->gb); \ + sign = block[j] >> 15; \ + block[j] += SHOW_UBITS(re, &s->gb, 1) * \ + ((quant_matrix[j] ^ sign) - sign) << Al; \ + LAST_SKIP_BITS(re, &s->gb, 1); \ } -#define ZERO_RUN \ -for(;;i++) {\ - if(i > last) {\ - i += run;\ - if(i > se) {\ - av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);\ - return -1;\ - }\ - break;\ - }\ - j = s->scantable.permutated[i];\ - if(block[j])\ - REFINE_BIT(j)\ - else if(run-- == 0)\ - break;\ +#define ZERO_RUN \ +for (; ; i++) { \ + if (i > last) { \ + i += run; \ + if (i > se) { \ + av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i); \ + return -1; \ + } \ + break; \ + } \ + j = s->scantable.permutated[i]; \ + if (block[j]) \ + REFINE_BIT(j) \ + else if (run-- == 0) \ + break; \ } /* decode block and dequantize - progressive JPEG refinement pass */ -static int decode_block_refinement(MJpegDecodeContext *s, DCTELEM *block, uint8_t *last_nnz, - int ac_index, int16_t *quant_matrix, - int ss, int se, int Al, int *EOBRUN) +static int decode_block_refinement(MJpegDecodeContext *s, DCTELEM *block, + uint8_t *last_nnz, + int ac_index, int16_t *quant_matrix, + int ss, int se, int Al, int *EOBRUN) { - int code, i=ss, j, sign, val, run; - int last = FFMIN(se, *last_nnz); + int code, i = ss, j, sign, val, run; + int last = FFMIN(se, *last_nnz); OPEN_READER(re, &s->gb); - if(*EOBRUN) + if (*EOBRUN) { (*EOBRUN)--; - else { - for(;;i++) { + } else { + for (; ; i++) { UPDATE_CACHE(re, &s->gb); GET_VLC(code, re, &s->gb, s->vlcs[2][ac_index].table, 9, 2); - if(code & 0xF) { + if (code & 0xF) { run = ((unsigned) code) >> 4; UPDATE_CACHE(re, &s->gb); val = SHOW_UBITS(re, &s->gb, 1); @@ -583,21 +599,21 @@ static int decode_block_refinement(MJpegDecodeContext *s, DCTELEM *block, uint8_ ZERO_RUN; j = s->scantable.permutated[i]; val--; - block[j] = ((quant_matrix[j]^val)-val) << Al; - if(i == se) { - if(i > *last_nnz) + block[j] = ((quant_matrix[j]^val) - val) << Al; + if (i == se) { + if (i > *last_nnz) *last_nnz = i; CLOSE_READER(re, &s->gb); return 0; } - }else{ + } else { run = ((unsigned) code) >> 4; - if(run == 0xF){ + if (run == 0xF) { ZERO_RUN; - }else{ + } else { val = run; run = (1 << run); - if(val) { + if (val) { UPDATE_CACHE(re, &s->gb); run += SHOW_UBITS(re, &s->gb, val); LAST_SKIP_BITS(re, &s->gb, val); @@ -608,13 +624,13 @@ static int decode_block_refinement(MJpegDecodeContext *s, DCTELEM *block, uint8_ } } - if(i > *last_nnz) + if (i > *last_nnz) *last_nnz = i; } - for(;i<=last;i++) { + for (; i <= last; i++) { j = s->scantable.permutated[i]; - if(block[j]) + if (block[j]) REFINE_BIT(j) } CLOSE_READER(re, &s->gb); @@ -624,43 +640,46 @@ static int decode_block_refinement(MJpegDecodeContext *s, DCTELEM *block, uint8_ #undef REFINE_BIT #undef ZERO_RUN -static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int predictor, int point_transform){ +static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int predictor, + int point_transform) +{ int i, mb_x, mb_y; uint16_t (*buffer)[4]; int left[3], top[3], topleft[3]; - const int linesize= s->linesize[0]; - const int mask= (1<<s->bits)-1; + const int linesize = s->linesize[0]; + const int mask = (1 << s->bits) - 1; - av_fast_malloc(&s->ljpeg_buffer, &s->ljpeg_buffer_size, (unsigned)s->mb_width * 4 * sizeof(s->ljpeg_buffer[0][0])); - buffer= s->ljpeg_buffer; + av_fast_malloc(&s->ljpeg_buffer, &s->ljpeg_buffer_size, + (unsigned)s->mb_width * 4 * sizeof(s->ljpeg_buffer[0][0])); + buffer = s->ljpeg_buffer; - 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; + 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_ptr->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++) { + 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++) { + for (i = 0; i < 3; i++) { int pred; - topleft[i]= top[i]; - top[i]= buffer[mb_x][i]; + 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)); + 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) { @@ -669,71 +688,74 @@ static int ljpeg_decode_rgb_scan(MJpegDecodeContext *s, int predictor, int point } } - 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]; + 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 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][2]; - ptr[4*mb_x+1] = buffer[mb_x][1]; - ptr[4*mb_x+2] = buffer[mb_x][0]; + } else { + for (mb_x = 0; mb_x < s->mb_width; mb_x++) { + ptr[4 * mb_x + 0] = buffer[mb_x][2]; + ptr[4 * mb_x + 1] = buffer[mb_x][1]; + ptr[4 * mb_x + 2] = buffer[mb_x][0]; } } } return 0; } -static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, int point_transform){ +static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, + int point_transform) +{ int i, mb_x, mb_y; - const int nb_components=3; + 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++) { + 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;i<nb_components;i++) { + if (mb_x == 0 || mb_y == 0 || s->interlaced) { + for (i = 0; i < nb_components; i++) { uint8_t *ptr; int n, h, v, x, y, c, j, linesize; - n = s->nb_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; j<n; j++) { + n = s->nb_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; j < n; j++) { int pred; - - ptr = s->picture_ptr->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); - } - } + // FIXME optimize this crap + ptr = s->picture_ptr->data[c] + + (linesize * (v * mb_y + y)) + + (h * mb_x + x); + 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); + *ptr = pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform); if (++x == h) { x = 0; @@ -741,24 +763,28 @@ static int ljpeg_decode_yuv_scan(MJpegDecodeContext *s, int predictor, int point } } } - }else{ - for(i=0;i<nb_components;i++) { + } else { + for (i = 0; i < nb_components; i++) { uint8_t *ptr; int n, h, v, x, y, c, j, linesize; - n = s->nb_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; j<n; j++) { + n = s->nb_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; j < n; j++) { int pred; - ptr = s->picture_ptr->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); + // FIXME optimize this crap + ptr = s->picture_ptr->data[c] + + (linesize * (v * mb_y + y)) + + (h * mb_x + x); + 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++; @@ -790,49 +816,54 @@ static av_always_inline void mjpeg_copy_block(uint8_t *dst, const uint8_t *src, } } -static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, int Al, - const uint8_t *mb_bitmask, const AVFrame *reference){ +static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, + int Al, const uint8_t *mb_bitmask, + const AVFrame *reference) +{ int i, mb_x, mb_y; - uint8_t* data[MAX_COMPONENTS]; + uint8_t *data[MAX_COMPONENTS]; const uint8_t *reference_data[MAX_COMPONENTS]; int linesize[MAX_COMPONENTS]; GetBitContext mb_bitmask_gb; - if (mb_bitmask) { - init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width*s->mb_height); - } + if (mb_bitmask) + init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width * s->mb_height); - if(s->flipped && s->avctx->flags & CODEC_FLAG_EMU_EDGE) { - av_log(s->avctx, AV_LOG_ERROR, "Can not flip image with CODEC_FLAG_EMU_EDGE set!\n"); + if (s->flipped && s->avctx->flags & CODEC_FLAG_EMU_EDGE) { + av_log(s->avctx, AV_LOG_ERROR, + "Can not flip image with CODEC_FLAG_EMU_EDGE set!\n"); s->flipped = 0; } - for(i=0; i < nb_components; i++) { - int c = s->comp_index[i]; + + for (i = 0; i < nb_components; i++) { + int c = s->comp_index[i]; data[c] = s->picture_ptr->data[c]; reference_data[c] = reference ? reference->data[c] : NULL; - linesize[c]=s->linesize[c]; + linesize[c] = s->linesize[c]; s->coefs_finished[c] |= 1; - if(s->flipped) { - //picture should be flipped upside-down for this codec - int offset = (linesize[c] * (s->v_scount[i] * (8 * s->mb_height -((s->height/s->v_max)&7)) - 1 )); - data[c] += offset; + if (s->flipped) { + // picture should be flipped upside-down for this codec + int offset = (linesize[c] * (s->v_scount[i] * + (8 * s->mb_height - ((s->height / s->v_max) & 7)) - 1)); + data[c] += offset; reference_data[c] += offset; - linesize[c] *= -1; + linesize[c] *= -1; } } - for(mb_y = 0; mb_y < s->mb_height; mb_y++) { - for(mb_x = 0; mb_x < s->mb_width; mb_x++) { + for (mb_y = 0; mb_y < s->mb_height; mb_y++) { + for (mb_x = 0; mb_x < s->mb_width; mb_x++) { const int copy_mb = mb_bitmask && !get_bits1(&mb_bitmask_gb); if (s->restart_interval && !s->restart_count) s->restart_count = s->restart_interval; - if(get_bits_count(&s->gb)>s->gb.size_in_bits){ - av_log(s->avctx, AV_LOG_ERROR, "overread %d\n", get_bits_count(&s->gb) - s->gb.size_in_bits); + if (get_bits_count(&s->gb)>s->gb.size_in_bits) { + av_log(s->avctx, AV_LOG_ERROR, "overread %d\n", + get_bits_count(&s->gb) - s->gb.size_in_bits); return -1; } - for(i=0;i<nb_components;i++) { + for (i = 0; i < nb_components; i++) { uint8_t *ptr; int n, h, v, x, y, c, j; int block_offset; @@ -842,38 +873,48 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, i v = s->v_scount[i]; x = 0; y = 0; - for(j=0;j<n;j++) { + for (j = 0; j < n; j++) { block_offset = (((linesize[c] * (v * mb_y + y) * 8) + (h * mb_x + x) * 8) >> s->avctx->lowres); - if(s->interlaced && s->bottom_field) + if (s->interlaced && s->bottom_field) block_offset += linesize[c] >> 1; ptr = data[c] + block_offset; - if(!s->progressive) { - if (copy_mb) { - mjpeg_copy_block(ptr, reference_data[c] + block_offset, linesize[c], s->avctx->lowres); - } else { - s->dsp.clear_block(s->block); - if(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; - } - s->dsp.idct_put(ptr, linesize[c], s->block); + if (!s->progressive) { + if (copy_mb) + mjpeg_copy_block(ptr, reference_data[c] + block_offset, + linesize[c], s->avctx->lowres); + else { + s->dsp.clear_block(s->block); + if (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; + } + s->dsp.idct_put(ptr, linesize[c], s->block); } } else { - int block_idx = s->block_stride[c] * (v * mb_y + y) + (h * mb_x + x); + int block_idx = s->block_stride[c] * (v * mb_y + y) + + (h * mb_x + x); DCTELEM *block = s->blocks[c][block_idx]; - if(Ah) - block[0] += get_bits1(&s->gb) * s->quant_matrixes[ s->quant_index[c] ][0] << Al; - else if(decode_dc_progressive(s, block, i, s->dc_index[i], s->quant_matrixes[ s->quant_index[c] ], Al) < 0) { - av_log(s->avctx, AV_LOG_ERROR, "error y=%d x=%d\n", mb_y, mb_x); + if (Ah) + block[0] += get_bits1(&s->gb) * + s->quant_matrixes[s->quant_index[c]][0] << Al; + else if (decode_dc_progressive(s, block, i, s->dc_index[i], + s->quant_matrixes[s->quant_index[c]], + Al) < 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); -//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); + // av_log(s->avctx, AV_LOG_DEBUG, "mb: %d %d processed\n", + // mb_y, mb_x); + // 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 (++x == h) { x = 0; y++; @@ -893,9 +934,8 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, i if ((get_bits(&s->gb, 8) & 0xF8) == 0xD0) { for (i = 0; i < nb_components; i++) /* reset dc */ s->last_dc[i] = 1024; - } else { + } else skip_bits_long(&s->gb, pos - get_bits_count(&s->gb)); - } } } } @@ -903,62 +943,66 @@ static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int Ah, i return 0; } -static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss, int se, int Ah, int Al, - const uint8_t *mb_bitmask, const AVFrame *reference){ +static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss, + int se, int Ah, int Al, + const uint8_t *mb_bitmask, + const AVFrame *reference) +{ int mb_x, mb_y; int EOBRUN = 0; int c = s->comp_index[0]; - uint8_t* data = s->picture_ptr->data[c]; + uint8_t *data = s->picture_ptr->data[c]; const uint8_t *reference_data = reference ? reference->data[c] : NULL; - int linesize = s->linesize[c]; + int linesize = s->linesize[c]; int last_scan = 0; - int16_t *quant_matrix = s->quant_matrixes[ s->quant_index[c] ]; + int16_t *quant_matrix = s->quant_matrixes[s->quant_index[c]]; GetBitContext mb_bitmask_gb; - if (mb_bitmask) { - init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width*s->mb_height); - } + if (mb_bitmask) + init_get_bits(&mb_bitmask_gb, mb_bitmask, s->mb_width * s->mb_height); - if(!Al) { - s->coefs_finished[c] |= (1LL<<(se+1))-(1LL<<ss); + if (!Al) { + s->coefs_finished[c] |= (1LL << (se + 1)) - (1LL << ss); last_scan = !~s->coefs_finished[c]; } - if(s->interlaced && s->bottom_field) { - int offset = linesize >> 1; - data += offset; + if (s->interlaced && s->bottom_field) { + int offset = linesize >> 1; + data += offset; reference_data += offset; } - for(mb_y = 0; mb_y < s->mb_height; mb_y++) { - int block_offset = (mb_y*linesize*8 >> s->avctx->lowres); - uint8_t *ptr = data + block_offset; - int block_idx = mb_y * s->block_stride[c]; + for (mb_y = 0; mb_y < s->mb_height; mb_y++) { + int block_offset = (mb_y * linesize * 8 >> s->avctx->lowres); + uint8_t *ptr = data + block_offset; + int block_idx = mb_y * s->block_stride[c]; DCTELEM (*block)[64] = &s->blocks[c][block_idx]; - uint8_t *last_nnz = &s->last_nnz[c][block_idx]; - for(mb_x = 0; mb_x < s->mb_width; mb_x++, block++, last_nnz++) { + uint8_t *last_nnz = &s->last_nnz[c][block_idx]; + for (mb_x = 0; mb_x < s->mb_width; mb_x++, block++, last_nnz++) { const int copy_mb = mb_bitmask && !get_bits1(&mb_bitmask_gb); if (!copy_mb) { - int ret; - if(Ah) - ret = decode_block_refinement(s, *block, last_nnz, s->ac_index[0], - quant_matrix, ss, se, Al, &EOBRUN); - else - ret = decode_block_progressive(s, *block, last_nnz, s->ac_index[0], - quant_matrix, ss, se, Al, &EOBRUN); - if(ret < 0) { - av_log(s->avctx, AV_LOG_ERROR, "error y=%d x=%d\n", mb_y, mb_x); - return -1; - } + int ret; + if (Ah) + ret = decode_block_refinement(s, *block, last_nnz, s->ac_index[0], + quant_matrix, ss, se, Al, &EOBRUN); + else + ret = decode_block_progressive(s, *block, last_nnz, s->ac_index[0], + quant_matrix, ss, se, Al, &EOBRUN); + if (ret < 0) { + av_log(s->avctx, AV_LOG_ERROR, + "error y=%d x=%d\n", mb_y, mb_x); + return -1; + } } - if(last_scan) { + if (last_scan) { if (copy_mb) { - mjpeg_copy_block(ptr, reference_data + block_offset, linesize, s->avctx->lowres); + mjpeg_copy_block(ptr, reference_data + block_offset, + linesize, s->avctx->lowres); } else { - s->dsp.idct_put(ptr, linesize, *block); - ptr += 8 >> s->avctx->lowres; + s->dsp.idct_put(ptr, linesize, *block); + ptr += 8 >> s->avctx->lowres; } } } @@ -966,36 +1010,36 @@ static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss, int s return 0; } -int ff_mjpeg_decode_sos(MJpegDecodeContext *s, - const uint8_t *mb_bitmask, const AVFrame *reference) +int ff_mjpeg_decode_sos(MJpegDecodeContext *s, const uint8_t *mb_bitmask, + const AVFrame *reference) { int len, nb_components, i, h, v, predictor, point_transform; int index, id; - const int block_size= s->lossless ? 1 : 8; + 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 (nb_components == 0 || nb_components > MAX_COMPONENTS){ - av_log(s->avctx, AV_LOG_ERROR, "decode_sos: nb_components (%d) unsupported\n", nb_components); + if (nb_components == 0 || nb_components > MAX_COMPONENTS) { + av_log(s->avctx, AV_LOG_ERROR, + "decode_sos: nb_components (%d) unsupported\n", nb_components); return -1; } - if (len != 6+2*nb_components) - { + if (len != 6 + 2 * nb_components) { av_log(s->avctx, AV_LOG_ERROR, "decode_sos: invalid len (%d)\n", len); return -1; } - for(i=0;i<nb_components;i++) { + for (i = 0; i < nb_components; i++) { id = get_bits(&s->gb, 8) - 1; av_log(s->avctx, AV_LOG_DEBUG, "component: %d\n", id); /* find component index */ - for(index=0;index<s->nb_components;index++) + for (index = 0; index < s->nb_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); + if (index == s->nb_components) { + av_log(s->avctx, AV_LOG_ERROR, + "decode_sos: index(%d) out of components\n", index); return -1; } /* Metasoft MJPEG codec has Cb and Cr swapped */ @@ -1006,8 +1050,8 @@ int ff_mjpeg_decode_sos(MJpegDecodeContext *s, 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->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); @@ -1015,34 +1059,36 @@ int ff_mjpeg_decode_sos(MJpegDecodeContext *s, 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 (!s->vlcs[0][s->dc_index[i]].table || !s->vlcs[1][s->ac_index[i]].table) + if (!s->vlcs[0][s->dc_index[i]].table || + !s->vlcs[1][s->ac_index[i]].table) goto out_of_range; } - 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 */ + 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;i<nb_components;i++) + for (i = 0; i < nb_components; i++) s->last_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 */ + } 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->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; + 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" : "sequential DCT", s->rgb ? "RGB" : "", + 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" : "sequential DCT", s->rgb ? "RGB" : "", predictor, point_transform, ilv, s->bits, s->pegasus_rct ? "PRCT" : (s->rct ? "RCT" : "")); @@ -1051,30 +1097,31 @@ int ff_mjpeg_decode_sos(MJpegDecodeContext *s, for (i = s->mjpb_skiptosod; i > 0; i--) skip_bits(&s->gb, 8); - if(s->lossless){ - if(CONFIG_JPEGLS_DECODER && s->ls){ -// for(){ + if (s->lossless) { + if (CONFIG_JPEGLS_DECODER && s->ls) { +// for () { // reset_ls_coding_parameters(s, 0); - if(ff_jpegls_decode_picture(s, predictor, point_transform, ilv) < 0) + if (ff_jpegls_decode_picture(s, predictor, point_transform, ilv) < 0) return -1; - }else{ - if(s->rgb){ - if(ljpeg_decode_rgb_scan(s, predictor, point_transform) < 0) + } 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) + } else { + if (ljpeg_decode_yuv_scan(s, predictor, point_transform) < 0) return -1; } } - }else{ - if(s->progressive && predictor) { - if(mjpeg_decode_scan_progressive_ac(s, predictor, ilv, prev_shift, point_transform, - mb_bitmask, reference) < 0) + } else { + if (s->progressive && predictor) { + if (mjpeg_decode_scan_progressive_ac(s, predictor, ilv, prev_shift, + point_transform, + mb_bitmask, reference) < 0) return -1; } else { - if(mjpeg_decode_scan(s, nb_components, prev_shift, point_transform, - mb_bitmask, reference) < 0) + if (mjpeg_decode_scan(s, nb_components, prev_shift, point_transform, + mb_bitmask, reference) < 0) return -1; } } @@ -1090,8 +1137,9 @@ 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); + s->restart_count = 0; + av_log(s->avctx, AV_LOG_DEBUG, "restart interval: %d\n", + s->restart_interval); return 0; } @@ -1103,22 +1151,20 @@ static int mjpeg_decode_app(MJpegDecodeContext *s) len = get_bits(&s->gb, 16); if (len < 5) return -1; - if(8*len + get_bits_count(&s->gb) > s->gb.size_in_bits) + if (8 * len + get_bits_count(&s->gb) > s->gb.size_in_bits) return -1; - id = get_bits_long(&s->gb, 32); - id = av_be2ne32(id); + id = get_bits_long(&s->gb, 32); + id = av_be2ne32(id); len -= 6; - if(s->avctx->debug & FF_DEBUG_STARTCODE){ + 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 information, but it's always present in AVID-created files. */ - if (id == AV_RL32("AVI1")) - { + if (id == AV_RL32("AVI1")) { /* structure: 4bytes AVI1 1bytes polarity @@ -1126,12 +1172,14 @@ static int mjpeg_decode_app(MJpegDecodeContext *s) 4bytes field_size 4bytes field_size_less_padding */ - s->buggy_avid = 1; -// if (s->first_picture) -// printf("mjpeg: workarounding buggy AVID\n"); + s->buggy_avid = 1; +// if (s->first_picture) +// printf("mjpeg: workarounding buggy AVID\n"); i = get_bits(&s->gb, 8); - if (i==2) s->bottom_field= 1; - else if(i==1) s->bottom_field= 0; + if (i == 2) + s->bottom_field = 1; + else if (i == 1) + s->bottom_field = 0; #if 0 skip_bits(&s->gb, 8); skip_bits(&s->gb, 32); @@ -1145,63 +1193,61 @@ static int mjpeg_decode_app(MJpegDecodeContext *s) // len -= 2; - if (id == AV_RL32("JFIF")) - { + if (id == AV_RL32("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); + 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); + 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 - ); + 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) - { + if (t_w && t_h) { /* skip thumbnail */ - if (len-10-(t_w*t_h*3) > 0) - len -= t_w*t_h*3; + if (len -10 - (t_w * t_h * 3) > 0) + len -= t_w * t_h * 3; } len -= 10; goto out; } - if (id == AV_RL32("Adob") && (get_bits(&s->gb, 8) == 'e')) - { + if (id == AV_RL32("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 */ + skip_bits(&s->gb, 8); /* transform */ len -= 7; goto out; } - if (id == AV_RL32("LJIF")){ + if (id == AV_RL32("LJIF")) { if (s->avctx->debug & FF_DEBUG_PICT_INFO) - av_log(s->avctx, AV_LOG_INFO, "Pegasus lossless jpeg header found\n"); + 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)){ + switch (get_bits(&s->gb, 8)) { case 1: - s->rgb= 1; - s->pegasus_rct=0; + s->rgb = 1; + s->pegasus_rct = 0; break; case 2: - s->rgb= 1; - s->pegasus_rct=1; + s->rgb = 1; + s->pegasus_rct = 1; break; default: av_log(s->avctx, AV_LOG_ERROR, "unknown colorspace\n"); @@ -1211,13 +1257,12 @@ static int mjpeg_decode_app(MJpegDecodeContext *s) } /* Apple MJPEG-A */ - if ((s->start_code == APP1) && (len > (0x28 - 8))) - { - id = get_bits_long(&s->gb, 32); - id = av_be2ne32(id); + if ((s->start_code == APP1) && (len > (0x28 - 8))) { + id = get_bits_long(&s->gb, 32); + id = av_be2ne32(id); len -= 4; - if (id == AV_RL32("mjpg")) /* Apple MJPEG-A */ - { + /* Apple MJPEG-A */ + if (id == AV_RL32("mjpg")) { #if 0 skip_bits(&s->gb, 32); /* field size */ skip_bits(&s->gb, 32); /* pad field size */ @@ -1236,8 +1281,9 @@ static int mjpeg_decode_app(MJpegDecodeContext *s) 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) + 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; @@ -1246,34 +1292,31 @@ out: 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) { + 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; + if (i > 0 && cbuf[i - 1] == '\n') + cbuf[i - 1] = 0; else cbuf[i] = 0; - if(s->avctx->debug & FF_DEBUG_PICT_INFO) + 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")) - { + 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; - } - else if((len > 20 && !strncmp(cbuf, "Intel(R) JPEG Library", 21)) || - (len > 19 && !strncmp(cbuf, "Metasoft MJPEG Codec", 20))){ + // if (s->first_picture) + // printf("mjpeg: workarounding buggy AVID\n"); + } else if (!strcmp(cbuf, "CS=ITU601")) + s->cs_itu601 = 1; + else if ((len > 20 && !strncmp(cbuf, "Intel(R) JPEG Library", 21)) || + (len > 19 && !strncmp(cbuf, "Metasoft MJPEG Codec", 20))) s->flipped = 1; - } av_free(cbuf); } @@ -1290,12 +1333,12 @@ static int find_marker(const uint8_t **pbuf_ptr, const uint8_t *buf_end) unsigned int v, v2; int val; #ifdef DEBUG - int skipped=0; + int skipped = 0; #endif buf_ptr = *pbuf_ptr; while (buf_ptr < buf_end) { - v = *buf_ptr++; + v = *buf_ptr++; v2 = *buf_ptr; if ((v == 0xff) && (v2 >= 0xc0) && (v2 <= 0xfe) && buf_ptr < buf_end) { val = *buf_ptr++; @@ -1314,105 +1357,97 @@ found: int ff_mjpeg_find_marker(MJpegDecodeContext *s, const uint8_t **buf_ptr, const uint8_t *buf_end, - const uint8_t **unescaped_buf_ptr, int *unescaped_buf_size) + const uint8_t **unescaped_buf_ptr, + int *unescaped_buf_size) { int start_code; start_code = find_marker(buf_ptr, buf_end); - 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(s->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) - { - const uint8_t *src = *buf_ptr; - uint8_t *dst = s->buffer; + 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(s->avctx, AV_LOG_DEBUG, + "buffer too small, expanding to %d bytes\n", s->buffer_size); + } - while (src<buf_end) - { - uint8_t x = *(src++); + /* unescape buffer of SOS, use special treatment for JPEG-LS */ + if (start_code == SOS && !s->ls) { + const uint8_t *src = *buf_ptr; + uint8_t *dst = s->buffer; - *(dst++) = x; - if (s->avctx->codec_id != CODEC_ID_THP) - { - if (x == 0xff) { - while (src < buf_end && x == 0xff) - x = *(src++); - - if (x >= 0xd0 && x <= 0xd7) - *(dst++) = x; - else if (x) - break; - } - } - } - *unescaped_buf_ptr = s->buffer; - *unescaped_buf_size = dst - s->buffer; + while (src < buf_end) { + uint8_t x = *(src++); - av_log(s->avctx, AV_LOG_DEBUG, "escaping removed %td bytes\n", - (buf_end - *buf_ptr) - (dst - s->buffer)); - } - else if(start_code == SOS && s->ls){ - const 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); + *(dst++) = x; + if (s->avctx->codec_id != CODEC_ID_THP) { + if (x == 0xff) { + while (src < buf_end && x == 0xff) + x = *(src++); - *unescaped_buf_ptr = dst; - *unescaped_buf_size = (bit_count + 7) >> 3; + if (x >= 0xd0 && x <= 0xd7) + *(dst++) = x; + else if (x) + break; } - else - { - *unescaped_buf_ptr = *buf_ptr; - *unescaped_buf_size = buf_end - *buf_ptr; + } + } + *unescaped_buf_ptr = s->buffer; + *unescaped_buf_size = dst - s->buffer; + + av_log(s->avctx, AV_LOG_DEBUG, "escaping removed %td bytes\n", + (buf_end - *buf_ptr) - (dst - s->buffer)); + } else if (start_code == SOS && s->ls) { + const 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); + + *unescaped_buf_ptr = dst; + *unescaped_buf_size = (bit_count + 7) >> 3; + } else { + *unescaped_buf_ptr = *buf_ptr; + *unescaped_buf_size = buf_end - *buf_ptr; + } return start_code; } -int ff_mjpeg_decode_frame(AVCodecContext *avctx, - void *data, int *data_size, - AVPacket *avpkt) +int ff_mjpeg_decode_frame(AVCodecContext *avctx, void *data, int *data_size, + AVPacket *avpkt) { const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; + int buf_size = avpkt->size; MJpegDecodeContext *s = avctx->priv_data; const uint8_t *buf_end, *buf_ptr; const uint8_t *unescaped_buf_ptr; @@ -1426,149 +1461,155 @@ int ff_mjpeg_decode_frame(AVCodecContext *avctx, while (buf_ptr < buf_end) { /* find start next marker */ start_code = ff_mjpeg_find_marker(s, &buf_ptr, buf_end, - &unescaped_buf_ptr, &unescaped_buf_size); - { - /* EOF */ - if (start_code < 0) { - goto the_end; - } else { - av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%td\n", start_code, buf_end - buf_ptr); - - init_get_bits(&s->gb, unescaped_buf_ptr, unescaped_buf_size*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); + &unescaped_buf_ptr, + &unescaped_buf_size); + /* EOF */ + if (start_code < 0) { + goto the_end; + } else { + av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%td\n", + start_code, buf_end - buf_ptr); + + init_get_bits(&s->gb, unescaped_buf_ptr, unescaped_buf_size * 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: + ff_mjpeg_decode_dqt(s); + break; + case DHT: + if (ff_mjpeg_decode_dht(s) < 0) { + av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n"); + return -1; } - - switch(start_code) { - case SOI: - s->restart_interval = 0; - - s->restart_count = 0; - /* nothing to do on SOI */ - break; - case DQT: - ff_mjpeg_decode_dqt(s); - break; - case DHT: - if(ff_mjpeg_decode_dht(s) < 0){ - av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n"); - return -1; - } - break; - case SOF0: - case SOF1: - s->lossless=0; - s->ls=0; - s->progressive=0; - if (ff_mjpeg_decode_sof(s) < 0) - return -1; - break; - case SOF2: - s->lossless=0; - s->ls=0; - s->progressive=1; - if (ff_mjpeg_decode_sof(s) < 0) - return -1; - break; - case SOF3: - s->lossless=1; - s->ls=0; - s->progressive=0; - if (ff_mjpeg_decode_sof(s) < 0) - return -1; - break; - case SOF48: - s->lossless=1; - s->ls=1; - s->progressive=0; - if (ff_mjpeg_decode_sof(s) < 0) - return -1; - break; - case LSE: - if (!CONFIG_JPEGLS_DECODER || ff_jpegls_decode_lse(s) < 0) - return -1; + break; + case SOF0: + case SOF1: + s->lossless = 0; + s->ls = 0; + s->progressive = 0; + if (ff_mjpeg_decode_sof(s) < 0) + return -1; + break; + case SOF2: + s->lossless = 0; + s->ls = 0; + s->progressive = 1; + if (ff_mjpeg_decode_sof(s) < 0) + return -1; + break; + case SOF3: + s->lossless = 1; + s->ls = 0; + s->progressive = 0; + if (ff_mjpeg_decode_sof(s) < 0) + return -1; + break; + case SOF48: + s->lossless = 1; + s->ls = 1; + s->progressive = 0; + if (ff_mjpeg_decode_sof(s) < 0) + return -1; + break; + case LSE: + if (!CONFIG_JPEGLS_DECODER || ff_jpegls_decode_lse(s) < 0) + return -1; + break; + case EOI: + s->cur_scan = 0; + if ((s->buggy_avid && !s->interlaced) || s->restart_interval) break; - case EOI: - s->cur_scan = 0; - if ((s->buggy_avid && !s->interlaced) || s->restart_interval) - break; eoi_parser: - if (!s->got_picture) { - av_log(avctx, AV_LOG_WARNING, "Found EOI before any SOF, ignoring\n"); - break; + if (!s->got_picture) { + av_log(avctx, AV_LOG_WARNING, + "Found EOI before any SOF, ignoring\n"); + break; } - if (s->interlaced) { - s->bottom_field ^= 1; - /* if not bottom field, do not output image yet */ - if (s->bottom_field == !s->interlace_polarity) - goto not_the_end; + if (s->interlaced) { + s->bottom_field ^= 1; + /* if not bottom field, do not output image yet */ + if (s->bottom_field == !s->interlace_polarity) + goto not_the_end; } - *picture = *s->picture_ptr; + *picture = *s->picture_ptr; *data_size = sizeof(AVFrame); - if(!s->lossless){ - picture->quality= FFMAX3(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; + if (!s->lossless) { + picture->quality = FFMAX3(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; - case SOS: - if (!s->got_picture) { - av_log(avctx, AV_LOG_WARNING, "Can not process SOS before SOF, skipping\n"); - break; - } - if (ff_mjpeg_decode_sos(s, NULL, NULL) < 0 && - (avctx->err_recognition & AV_EF_EXPLODE)) - return AVERROR_INVALIDDATA; - /* 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 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); + goto the_end; + case SOS: + if (!s->got_picture) { + av_log(avctx, AV_LOG_WARNING, + "Can not process SOS before SOF, skipping\n"); break; -// default: -// printf("mjpeg: unsupported marker (%x)\n", start_code); -// break; - } + } + if (ff_mjpeg_decode_sos(s, NULL, NULL) < 0 && + (avctx->err_recognition & AV_EF_EXPLODE)) + return AVERROR_INVALIDDATA; + /* 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 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)); - } + /* 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)); } } if (s->got_picture) { @@ -1578,8 +1619,9 @@ not_the_end: av_log(avctx, AV_LOG_FATAL, "No JPEG data found in image\n"); return -1; the_end: - av_log(avctx, AV_LOG_DEBUG, "mjpeg decode frame unused %td bytes\n", buf_end - buf_ptr); -// return buf_end - buf_ptr; + av_log(avctx, AV_LOG_DEBUG, "mjpeg decode frame unused %td bytes\n", + buf_end - buf_ptr); +// return buf_end - buf_ptr; return buf_ptr - buf; } @@ -1594,13 +1636,13 @@ av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx) av_free(s->buffer); av_free(s->qscale_table); av_freep(&s->ljpeg_buffer); - s->ljpeg_buffer_size=0; + s->ljpeg_buffer_size = 0; - for(i=0;i<3;i++) { - for(j=0;j<4;j++) + for (i = 0; i < 3; i++) { + for (j = 0; j < 4; j++) free_vlc(&s->vlcs[i][j]); } - for(i=0; i<MAX_COMPONENTS; i++) { + for (i = 0; i < MAX_COMPONENTS; i++) { av_freep(&s->blocks[i]); av_freep(&s->last_nnz[i]); } @@ -1610,7 +1652,8 @@ av_cold int ff_mjpeg_decode_end(AVCodecContext *avctx) #define OFFSET(x) offsetof(MJpegDecodeContext, x) #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM static const AVOption options[] = { - { "extern_huff", "Use external huffman table.", OFFSET(extern_huff), AV_OPT_TYPE_INT, { 0 }, 0, 1, VD }, + { "extern_huff", "Use external huffman table.", + OFFSET(extern_huff), AV_OPT_TYPE_INT, { 0 }, 0, 1, VD }, { NULL }, }; @@ -1630,8 +1673,8 @@ AVCodec ff_mjpeg_decoder = { .close = ff_mjpeg_decode_end, .decode = ff_mjpeg_decode_frame, .capabilities = CODEC_CAP_DR1, - .max_lowres = 3, - .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"), + .max_lowres = 3, + .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"), .priv_class = &mjpegdec_class, }; @@ -1644,6 +1687,6 @@ AVCodec ff_thp_decoder = { .close = ff_mjpeg_decode_end, .decode = ff_mjpeg_decode_frame, .capabilities = CODEC_CAP_DR1, - .max_lowres = 3, - .long_name = NULL_IF_CONFIG_SMALL("Nintendo Gamecube THP video"), + .max_lowres = 3, + .long_name = NULL_IF_CONFIG_SMALL("Nintendo Gamecube THP video"), }; 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