diff options
Diffstat (limited to 'libavcodec/mpeg4videoenc.c')
-rw-r--r-- | libavcodec/mpeg4videoenc.c | 87 |
1 files changed, 50 insertions, 37 deletions
diff --git a/libavcodec/mpeg4videoenc.c b/libavcodec/mpeg4videoenc.c index 189664d..9865e1d 100644 --- a/libavcodec/mpeg4videoenc.c +++ b/libavcodec/mpeg4videoenc.c @@ -3,20 +3,20 @@ * Copyright (c) 2000,2001 Fabrice Bellard * Copyright (c) 2002-2010 Michael Niedermayer <michaelni@gmx.at> * - * 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 */ @@ -208,7 +208,7 @@ static inline int decide_ac_pred(MpegEncContext *s, int16_t block[6][64], } /** - * modify mb_type & qscale so that encoding is acually possible in mpeg4 + * modify mb_type & qscale so that encoding is actually possible in mpeg4 */ void ff_clean_mpeg4_qscales(MpegEncContext *s) { @@ -278,19 +278,19 @@ static inline void mpeg4_encode_dc(PutBitContext *s, int level, int n) if (n < 4) { /* luminance */ - put_bits(&s->pb, ff_mpeg4_DCtab_lum[size][1], ff_mpeg4_DCtab_lum[size][0]); + put_bits(s, ff_mpeg4_DCtab_lum[size][1], ff_mpeg4_DCtab_lum[size][0]); } else { /* chrominance */ - put_bits(&s->pb, ff_mpeg4_DCtab_chrom[size][1], ff_mpeg4_DCtab_chrom[size][0]); + put_bits(s, ff_mpeg4_DCtab_chrom[size][1], ff_mpeg4_DCtab_chrom[size][0]); } /* encode remaining bits */ if (size > 0) { if (level < 0) level = (-level) ^ ((1 << size) - 1); - put_bits(&s->pb, size, level); + put_bits(s, size, level); if (size > 8) - put_bits(&s->pb, 1, 1); + put_bits(s, 1, 1); } #endif } @@ -525,9 +525,9 @@ void ff_mpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], s->last_mv[i][1][1] = 0; } - assert(s->dquant >= -2 && s->dquant <= 2); - assert((s->dquant & 1) == 0); - assert(mb_type >= 0); + av_assert2(s->dquant >= -2 && s->dquant <= 2); + av_assert2((s->dquant & 1) == 0); + av_assert2(mb_type >= 0); /* nothing to do if this MB was skipped in the next P Frame */ if (s->next_picture.mbskip_table[s->mb_y * s->mb_stride + s->mb_x]) { // FIXME avoid DCT & ... @@ -547,7 +547,7 @@ void ff_mpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], if ((cbp | motion_x | motion_y | mb_type) == 0) { /* direct MB with MV={0,0} */ - assert(s->dquant == 0); + av_assert2(s->dquant == 0); put_bits(&s->pb, 1, 1); /* mb not coded modb1=1 */ @@ -584,12 +584,12 @@ void ff_mpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], s->misc_bits += get_bits_diff(s); if (!mb_type) { - assert(s->mv_dir & MV_DIRECT); + av_assert2(s->mv_dir & MV_DIRECT); ff_h263_encode_motion_vector(s, motion_x, motion_y, 1); s->b_count++; s->f_count++; } else { - assert(mb_type > 0 && mb_type < 4); + av_assert2(mb_type > 0 && mb_type < 4); if (s->mv_type != MV_TYPE_FIELD) { if (s->mv_dir & MV_DIR_FORWARD) { ff_h263_encode_motion_vector(s, @@ -669,10 +669,6 @@ void ff_mpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], x = s->mb_x * 16; y = s->mb_y * 16; - if (x + 16 > s->width) - x = s->width - 16; - if (y + 16 > s->height) - y = s->height - 16; offset = x + y * s->linesize; p_pic = s->new_picture.f->data[0] + offset; @@ -689,7 +685,21 @@ void ff_mpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], b_pic = pic->f->data[0] + offset; if (!pic->shared) b_pic += INPLACE_OFFSET; - diff = s->dsp.sad[0](NULL, p_pic, b_pic, s->linesize, 16); + + if (x + 16 > s->width || y + 16 > s->height) { + int x1, y1; + int xe = FFMIN(16, s->width - x); + int ye = FFMIN(16, s->height - y); + diff = 0; + for (y1 = 0; y1 < ye; y1++) { + for (x1 = 0; x1 < xe; x1++) { + diff += FFABS(p_pic[x1 + y1 * s->linesize] - b_pic[x1 + y1 * s->linesize]); + } + } + diff = diff * 256 / (xe * ye); + } else { + diff = s->dsp.sad[0](NULL, p_pic, b_pic, s->linesize, 16); + } if (diff > s->qscale * 70) { // FIXME check that 70 is optimal s->mb_skipped = 0; break; @@ -754,7 +764,7 @@ void ff_mpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], if (s->dquant) put_bits(pb2, 2, dquant_code[s->dquant + 2]); - assert(!s->progressive_sequence); + av_assert2(!s->progressive_sequence); if (cbp) put_bits(pb2, 1, s->interlaced_dct); put_bits(pb2, 1, 1); @@ -778,7 +788,7 @@ void ff_mpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], s->mv[0][1][1] - pred_y, s->f_code); } else { - assert(s->mv_type == MV_TYPE_8X8); + av_assert2(s->mv_type == MV_TYPE_8X8); put_bits(&s->pb, ff_h263_inter_MCBPC_bits[cbpc + 16], ff_h263_inter_MCBPC_code[cbpc + 16]); @@ -894,7 +904,7 @@ void ff_set_mpeg4_time(MpegEncContext *s) ff_mpeg4_init_direct_mv(s); } else { s->last_time_base = s->time_base; - s->time_base = s->time / s->avctx->time_base.den; + s->time_base = FFUDIV(s->time, s->avctx->time_base.den); } } @@ -910,13 +920,12 @@ static void mpeg4_encode_gop_header(MpegEncContext *s) if (s->reordered_input_picture[1]) time = FFMIN(time, s->reordered_input_picture[1]->f->pts); time = time * s->avctx->time_base.num; + s->last_time_base = FFUDIV(time, s->avctx->time_base.den); - seconds = time / s->avctx->time_base.den; - minutes = seconds / 60; - seconds %= 60; - hours = minutes / 60; - minutes %= 60; - hours %= 24; + seconds = FFUDIV(time, s->avctx->time_base.den); + minutes = FFUDIV(seconds, 60); seconds = FFUMOD(seconds, 60); + hours = FFUDIV(minutes, 60); minutes = FFUMOD(minutes, 60); + hours = FFUMOD(hours , 24); put_bits(&s->pb, 5, hours); put_bits(&s->pb, 6, minutes); @@ -926,8 +935,6 @@ static void mpeg4_encode_gop_header(MpegEncContext *s) put_bits(&s->pb, 1, !!(s->flags & CODEC_FLAG_CLOSED_GOP)); put_bits(&s->pb, 1, 0); // broken link == NO - s->last_time_base = time / s->avctx->time_base.den; - ff_mpeg4_stuffing(&s->pb); } @@ -1011,6 +1018,8 @@ static void mpeg4_encode_vol_header(MpegEncContext *s, put_bits(&s->pb, 4, s->aspect_ratio_info); /* aspect ratio info */ if (s->aspect_ratio_info == FF_ASPECT_EXTENDED) { + av_reduce(&s->avctx->sample_aspect_ratio.num, &s->avctx->sample_aspect_ratio.den, + s->avctx->sample_aspect_ratio.num, s->avctx->sample_aspect_ratio.den, 255); put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.num); put_bits(&s->pb, 8, s->avctx->sample_aspect_ratio.den); } @@ -1099,11 +1108,10 @@ void ff_mpeg4_encode_picture_header(MpegEncContext *s, int picture_number) put_bits(&s->pb, 16, VOP_STARTCODE); /* vop header */ put_bits(&s->pb, 2, s->pict_type - 1); /* pict type: I = 0 , P = 1 */ - assert(s->time >= 0); - time_div = s->time / s->avctx->time_base.den; - time_mod = s->time % s->avctx->time_base.den; + time_div = FFUDIV(s->time, s->avctx->time_base.den); + time_mod = FFUMOD(s->time, s->avctx->time_base.den); time_incr = time_div - s->last_time_base; - assert(time_incr >= 0); + av_assert0(time_incr >= 0); while (time_incr--) put_bits(&s->pb, 1, 1); @@ -1191,8 +1199,8 @@ static av_cold void init_uni_mpeg4_rl_tab(RLTable *rl, uint32_t *bits_tab, { int slevel, run, last; - assert(MAX_LEVEL >= 64); - assert(MAX_RUN >= 63); + av_assert0(MAX_LEVEL >= 64); + av_assert0(MAX_RUN >= 63); for (slevel = -64; slevel < 64; slevel++) { if (slevel == 0) @@ -1287,6 +1295,11 @@ static av_cold int encode_init(AVCodecContext *avctx) int ret; static int done = 0; + if (avctx->width >= (1<<13) || avctx->height >= (1<<13)) { + av_log(avctx, AV_LOG_ERROR, "dimensions too large for MPEG-4\n"); + return AVERROR(EINVAL); + } + if ((ret = ff_MPV_encode_init(avctx)) < 0) return ret; |