diff options
Diffstat (limited to 'libavcodec/huffyuv.c')
-rw-r--r-- | libavcodec/huffyuv.c | 104 |
1 files changed, 82 insertions, 22 deletions
diff --git a/libavcodec/huffyuv.c b/libavcodec/huffyuv.c index ebbfc45..c46e93f 100644 --- a/libavcodec/huffyuv.c +++ b/libavcodec/huffyuv.c @@ -6,20 +6,20 @@ * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of * the algorithm used * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg 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. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -152,27 +152,55 @@ static inline int sub_left_prediction(HYuvContext *s, uint8_t *dst, uint8_t *src } } -static inline void sub_left_prediction_bgr32(HYuvContext *s, uint8_t *dst, uint8_t *src, int w, int *red, int *green, int *blue){ +static inline void sub_left_prediction_bgr32(HYuvContext *s, uint8_t *dst, uint8_t *src, int w, int *red, int *green, int *blue, int *alpha){ int i; - int r,g,b; + int r,g,b,a; r= *red; g= *green; b= *blue; + a= *alpha; for(i=0; i<FFMIN(w,4); i++){ const int rt= src[i*4+R]; const int gt= src[i*4+G]; const int bt= src[i*4+B]; + const int at= src[i*4+A]; dst[i*4+R]= rt - r; dst[i*4+G]= gt - g; dst[i*4+B]= bt - b; + dst[i*4+A]= at - a; r = rt; g = gt; b = bt; + a = at; } s->dsp.diff_bytes(dst+16, src+16, src+12, w*4-16); *red= src[(w-1)*4+R]; *green= src[(w-1)*4+G]; *blue= src[(w-1)*4+B]; + *alpha= src[(w-1)*4+A]; +} + +static inline void sub_left_prediction_rgb24(HYuvContext *s, uint8_t *dst, uint8_t *src, int w, int *red, int *green, int *blue){ + int i; + int r,g,b; + r= *red; + g= *green; + b= *blue; + for(i=0; i<FFMIN(w,16); i++){ + const int rt= src[i*3+0]; + const int gt= src[i*3+1]; + const int bt= src[i*3+2]; + dst[i*3+0]= rt - r; + dst[i*3+1]= gt - g; + dst[i*3+2]= bt - b; + r = rt; + g = gt; + b = bt; + } + s->dsp.diff_bytes(dst+48, src+48, src+48-3, w*3-48); + *red= src[(w-1)*3+0]; + *green= src[(w-1)*3+1]; + *blue= src[(w-1)*3+2]; } static int read_len_table(uint8_t *dst, GetBitContext *gb){ @@ -433,6 +461,7 @@ static av_cold int decode_init(AVCodecContext *avctx) memset(s->vlc, 0, 3*sizeof(VLC)); avctx->coded_frame= &s->picture; + avcodec_get_frame_defaults(&s->picture); s->interlaced= s->height > 288; s->bgr32=1; @@ -592,6 +621,9 @@ static av_cold int encode_init(AVCodecContext *avctx) s->bitstream_bpp= 16; break; case PIX_FMT_RGB32: + s->bitstream_bpp= 32; + break; + case PIX_FMT_RGB24: s->bitstream_bpp= 24; break; default: @@ -878,26 +910,29 @@ static void decode_bgr_bitstream(HYuvContext *s, int count){ } } -static int encode_bgr_bitstream(HYuvContext *s, int count){ +static inline int encode_bgra_bitstream(HYuvContext *s, int count, int planes){ int i; - if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < 3*4*count){ + if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < 4*planes*count){ av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n"); return -1; } #define LOAD3\ - int g= s->temp[0][4*i+G];\ - int b= (s->temp[0][4*i+B] - g) & 0xff;\ - int r= (s->temp[0][4*i+R] - g) & 0xff; + int g= s->temp[0][planes==3 ? 3*i+1 : 4*i+G];\ + int b= (s->temp[0][planes==3 ? 3*i+2 : 4*i+B] - g) & 0xff;\ + int r= (s->temp[0][planes==3 ? 3*i+0 : 4*i+R] - g) & 0xff;\ + int a= s->temp[0][planes*i+A]; #define STAT3\ s->stats[0][b]++;\ s->stats[1][g]++;\ - s->stats[2][r]++; + s->stats[2][r]++;\ + if(planes==4) s->stats[2][a]++; #define WRITE3\ put_bits(&s->pb, s->len[1][g], s->bits[1][g]);\ put_bits(&s->pb, s->len[0][b], s->bits[0][b]);\ - put_bits(&s->pb, s->len[2][r], s->bits[2][r]); + put_bits(&s->pb, s->len[2][r], s->bits[2][r]);\ + if(planes==4) put_bits(&s->pb, s->len[2][a], s->bits[2][a]); if((s->flags&CODEC_FLAG_PASS1) && (s->avctx->flags2&CODEC_FLAG2_NO_OUTPUT)){ for(i=0; i<count; i++){ @@ -1366,25 +1401,50 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, const int stride = -p->linesize[0]; const int fake_stride = -fake_ystride; int y; - int leftr, leftg, leftb; + int leftr, leftg, leftb, lefta; + put_bits(&s->pb, 8, lefta= data[A]); put_bits(&s->pb, 8, leftr= data[R]); put_bits(&s->pb, 8, leftg= data[G]); put_bits(&s->pb, 8, leftb= data[B]); - put_bits(&s->pb, 8, 0); - sub_left_prediction_bgr32(s, s->temp[0], data+4, width-1, &leftr, &leftg, &leftb); - encode_bgr_bitstream(s, width-1); + sub_left_prediction_bgr32(s, s->temp[0], data+4, width-1, &leftr, &leftg, &leftb, &lefta); + encode_bgra_bitstream(s, width-1, 4); for(y=1; y<s->height; y++){ uint8_t *dst = data + y*stride; if(s->predictor == PLANE && s->interlaced < y){ s->dsp.diff_bytes(s->temp[1], dst, dst - fake_stride, width*4); - sub_left_prediction_bgr32(s, s->temp[0], s->temp[1], width, &leftr, &leftg, &leftb); + sub_left_prediction_bgr32(s, s->temp[0], s->temp[1], width, &leftr, &leftg, &leftb, &lefta); + }else{ + sub_left_prediction_bgr32(s, s->temp[0], dst, width, &leftr, &leftg, &leftb, &lefta); + } + encode_bgra_bitstream(s, width, 4); + } + }else if(avctx->pix_fmt == PIX_FMT_RGB24){ + uint8_t *data = p->data[0] + (height-1)*p->linesize[0]; + const int stride = -p->linesize[0]; + const int fake_stride = -fake_ystride; + int y; + int leftr, leftg, leftb; + + put_bits(&s->pb, 8, leftr= data[0]); + put_bits(&s->pb, 8, leftg= data[1]); + put_bits(&s->pb, 8, leftb= data[2]); + put_bits(&s->pb, 8, 0); + + sub_left_prediction_rgb24(s, s->temp[0], data+3, width-1, &leftr, &leftg, &leftb); + encode_bgra_bitstream(s, width-1, 3); + + for(y=1; y<s->height; y++){ + uint8_t *dst = data + y*stride; + if(s->predictor == PLANE && s->interlaced < y){ + s->dsp.diff_bytes(s->temp[1], dst, dst - fake_stride, width*3); + sub_left_prediction_rgb24(s, s->temp[0], s->temp[1], width, &leftr, &leftg, &leftb); }else{ - sub_left_prediction_bgr32(s, s->temp[0], dst, width, &leftr, &leftg, &leftb); + sub_left_prediction_rgb24(s, s->temp[0], dst, width, &leftr, &leftg, &leftb); } - encode_bgr_bitstream(s, width); + encode_bgra_bitstream(s, width, 3); } }else{ av_log(avctx, AV_LOG_ERROR, "Format not supported!\n"); @@ -1473,7 +1533,7 @@ AVCodec ff_huffyuv_encoder = { .init = encode_init, .encode = encode_frame, .close = encode_end, - .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV422P, PIX_FMT_RGB32, PIX_FMT_NONE}, + .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV422P, PIX_FMT_RGB24, PIX_FMT_RGB32, PIX_FMT_NONE}, .long_name = NULL_IF_CONFIG_SMALL("Huffyuv / HuffYUV"), }; #endif @@ -1487,7 +1547,7 @@ AVCodec ff_ffvhuff_encoder = { .init = encode_init, .encode = encode_frame, .close = encode_end, - .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_RGB32, PIX_FMT_NONE}, + .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_RGB24, PIX_FMT_RGB32, PIX_FMT_NONE}, .long_name = NULL_IF_CONFIG_SMALL("Huffyuv FFmpeg variant"), }; #endif |