diff options
Diffstat (limited to 'libavcodec/ljpegenc.c')
| -rw-r--r-- | libavcodec/ljpegenc.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/libavcodec/ljpegenc.c b/libavcodec/ljpegenc.c index 41db067..aa6abe9 100644 --- a/libavcodec/ljpegenc.c +++ b/libavcodec/ljpegenc.c @@ -8,20 +8,20 @@ * aspecting, new decode_frame mechanism and apple mjpeg-b support * by Alex Beregszaszi * - * 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 */ @@ -57,10 +57,8 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt, max_pkt_size += mb_width * mb_height * 3 * 4 * s->mjpeg_hsample[0] * s->mjpeg_vsample[0]; } - if ((ret = ff_alloc_packet(pkt, max_pkt_size)) < 0) { - av_log(avctx, AV_LOG_ERROR, "Error getting output packet of size %d.\n", max_pkt_size); + if ((ret = ff_alloc_packet2(avctx, pkt, max_pkt_size)) < 0) return ret; - } init_put_bits(&s->pb, pkt->data, pkt->size); @@ -72,7 +70,9 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt, s->header_bits= put_bits_count(&s->pb); - if(avctx->pix_fmt == PIX_FMT_BGRA){ + if(avctx->pix_fmt == PIX_FMT_BGR0 + || avctx->pix_fmt == PIX_FMT_BGRA + || avctx->pix_fmt == PIX_FMT_BGR24){ int x, y, i; const int linesize= p->linesize[0]; uint16_t (*buffer)[4]= (void *) s->rd_scratchpad; @@ -95,9 +95,15 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt, top[i]= left[i]= topleft[i]= buffer[0][i]; } for(x = 0; x < width; x++) { + if(avctx->pix_fmt == PIX_FMT_BGR24){ + buffer[x][1] = ptr[3*x+0] - ptr[3*x+1] + 0x100; + buffer[x][2] = ptr[3*x+2] - ptr[3*x+1] + 0x100; + buffer[x][0] = (ptr[3*x+0] + 2*ptr[3*x+1] + ptr[3*x+2])>>2; + }else{ 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; @@ -190,7 +196,8 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt, } emms_c(); - + av_assert0(s->esc_pos == s->header_bits >> 3); + ff_mjpeg_encode_stuffing(s); ff_mjpeg_encode_picture_trailer(s); s->picture_number++; @@ -212,5 +219,10 @@ AVCodec ff_ljpeg_encoder = { //FIXME avoid MPV_* lossless JPEG should not need t .init = ff_MPV_encode_init, .encode2 = encode_picture_lossless, .close = ff_MPV_encode_end, + .pix_fmts = (const enum PixelFormat[]){ + PIX_FMT_BGR24, PIX_FMT_BGRA, PIX_FMT_BGR0, + PIX_FMT_YUVJ420P, PIX_FMT_YUVJ444P, PIX_FMT_YUVJ422P, + PIX_FMT_YUV420P, PIX_FMT_YUV444P, PIX_FMT_YUV422P, + PIX_FMT_NONE}, .long_name = NULL_IF_CONFIG_SMALL("Lossless JPEG"), }; |
