diff options
Diffstat (limited to 'ffmpeg/libavcodec/mpeg4videoenc.c')
| -rw-r--r-- | ffmpeg/libavcodec/mpeg4videoenc.c | 1421 |
1 files changed, 0 insertions, 1421 deletions
diff --git a/ffmpeg/libavcodec/mpeg4videoenc.c b/ffmpeg/libavcodec/mpeg4videoenc.c deleted file mode 100644 index 14c6e8f..0000000 --- a/ffmpeg/libavcodec/mpeg4videoenc.c +++ /dev/null @@ -1,1421 +0,0 @@ -/* - * MPEG4 encoder. - * Copyright (c) 2000,2001 Fabrice Bellard - * Copyright (c) 2002-2010 Michael Niedermayer <michaelni@gmx.at> - * - * This file is part of FFmpeg. - * - * 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. - * - * 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 FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "libavutil/attributes.h" -#include "libavutil/log.h" -#include "libavutil/opt.h" -#include "mpegvideo.h" -#include "h263.h" -#include "mpeg4video.h" - -/* The uni_DCtab_* tables below contain unified bits+length tables to encode DC - * differences in mpeg4. Unified in the sense that the specification specifies - * this encoding in several steps. */ -static uint8_t uni_DCtab_lum_len[512]; -static uint8_t uni_DCtab_chrom_len[512]; -static uint16_t uni_DCtab_lum_bits[512]; -static uint16_t uni_DCtab_chrom_bits[512]; - -/* Unified encoding tables for run length encoding of coefficients. - * Unified in the sense that the specification specifies the encoding in several steps. */ -static uint32_t uni_mpeg4_intra_rl_bits[64 * 64 * 2 * 2]; -static uint8_t uni_mpeg4_intra_rl_len[64 * 64 * 2 * 2]; -static uint32_t uni_mpeg4_inter_rl_bits[64 * 64 * 2 * 2]; -static uint8_t uni_mpeg4_inter_rl_len[64 * 64 * 2 * 2]; - -//#define UNI_MPEG4_ENC_INDEX(last, run, level) ((last) * 128 + (run) * 256 + (level)) -//#define UNI_MPEG4_ENC_INDEX(last, run, level) ((last) * 128 * 64 + (run) + (level) * 64) -#define UNI_MPEG4_ENC_INDEX(last, run, level) ((last) * 128 * 64 + (run) * 128 + (level)) - -/* mpeg4 - * inter - * max level: 24/6 - * max run: 53/63 - * - * intra - * max level: 53/16 - * max run: 29/41 - */ - -/** - * Return the number of bits that encoding the 8x8 block in block would need. - * @param[in] block_last_index last index in scantable order that refers to a non zero element in block. - */ -static inline int get_block_rate(MpegEncContext *s, int16_t block[64], - int block_last_index, uint8_t scantable[64]) -{ - int last = 0; - int j; - int rate = 0; - - for (j = 1; j <= block_last_index; j++) { - const int index = scantable[j]; - int level = block[index]; - if (level) { - level += 64; - if ((level & (~127)) == 0) { - if (j < block_last_index) - rate += s->intra_ac_vlc_length[UNI_AC_ENC_INDEX(j - last - 1, level)]; - else - rate += s->intra_ac_vlc_last_length[UNI_AC_ENC_INDEX(j - last - 1, level)]; - } else - rate += s->ac_esc_length; - - last = j; - } - } - - return rate; -} - -/** - * Restore the ac coefficients in block that have been changed by decide_ac_pred(). - * This function also restores s->block_last_index. - * @param[in,out] block MB coefficients, these will be restored - * @param[in] dir ac prediction direction for each 8x8 block - * @param[out] st scantable for each 8x8 block - * @param[in] zigzag_last_index index referring to the last non zero coefficient in zigzag order - */ -static inline void restore_ac_coeffs(MpegEncContext *s, int16_t block[6][64], - const int dir[6], uint8_t *st[6], - const int zigzag_last_index[6]) -{ - int i, n; - memcpy(s->block_last_index, zigzag_last_index, sizeof(int) * 6); - - for (n = 0; n < 6; n++) { - int16_t *ac_val = s->ac_val[0][0] + s->block_index[n] * 16; - - st[n] = s->intra_scantable.permutated; - if (dir[n]) { - /* top prediction */ - for (i = 1; i < 8; i++) - block[n][s->dsp.idct_permutation[i]] = ac_val[i + 8]; - } else { - /* left prediction */ - for (i = 1; i < 8; i++) - block[n][s->dsp.idct_permutation[i << 3]] = ac_val[i]; - } - } -} - -/** - * Return the optimal value (0 or 1) for the ac_pred element for the given MB in mpeg4. - * This function will also update s->block_last_index and s->ac_val. - * @param[in,out] block MB coefficients, these will be updated if 1 is returned - * @param[in] dir ac prediction direction for each 8x8 block - * @param[out] st scantable for each 8x8 block - * @param[out] zigzag_last_index index referring to the last non zero coefficient in zigzag order - */ -static inline int decide_ac_pred(MpegEncContext *s, int16_t block[6][64], - const int dir[6], uint8_t *st[6], - int zigzag_last_index[6]) -{ - int score = 0; - int i, n; - int8_t *const qscale_table = s->current_picture.qscale_table; - - memcpy(zigzag_last_index, s->block_last_index, sizeof(int) * 6); - - for (n = 0; n < 6; n++) { - int16_t *ac_val, *ac_val1; - - score -= get_block_rate(s, block[n], s->block_last_index[n], - s->intra_scantable.permutated); - - ac_val = s->ac_val[0][0] + s->block_index[n] * 16; - ac_val1 = ac_val; - if (dir[n]) { - const int xy = s->mb_x + s->mb_y * s->mb_stride - s->mb_stride; - /* top prediction */ - ac_val -= s->block_wrap[n] * 16; - if (s->mb_y == 0 || s->qscale == qscale_table[xy] || n == 2 || n == 3) { - /* same qscale */ - for (i = 1; i < 8; i++) { - const int level = block[n][s->dsp.idct_permutation[i]]; - block[n][s->dsp.idct_permutation[i]] = level - ac_val[i + 8]; - ac_val1[i] = block[n][s->dsp.idct_permutation[i << 3]]; - ac_val1[i + 8] = level; - } - } else { - /* different qscale, we must rescale */ - for (i = 1; i < 8; i++) { - const int level = block[n][s->dsp.idct_permutation[i]]; - block[n][s->dsp.idct_permutation[i]] = level - ROUNDED_DIV(ac_val[i + 8] * qscale_table[xy], s->qscale); - ac_val1[i] = block[n][s->dsp.idct_permutation[i << 3]]; - ac_val1[i + 8] = level; - } - } - st[n] = s->intra_h_scantable.permutated; - } else { - const int xy = s->mb_x - 1 + s->mb_y * s->mb_stride; - /* left prediction */ - ac_val -= 16; - if (s->mb_x == 0 || s->qscale == qscale_table[xy] || n == 1 || n == 3) { - /* same qscale */ - for (i = 1; i < 8; i++) { - const int level = block[n][s->dsp.idct_permutation[i << 3]]; - block[n][s->dsp.idct_permutation[i << 3]] = level - ac_val[i]; - ac_val1[i] = level; - ac_val1[i + 8] = block[n][s->dsp.idct_permutation[i]]; - } - } else { - /* different qscale, we must rescale */ - for (i = 1; i < 8; i++) { - const int level = block[n][s->dsp.idct_permutation[i << 3]]; - block[n][s->dsp.idct_permutation[i << 3]] = level - ROUNDED_DIV(ac_val[i] * qscale_table[xy], s->qscale); - ac_val1[i] = level; - ac_val1[i + 8] = block[n][s->dsp.idct_permutation[i]]; - } - } - st[n] = s->intra_v_scantable.permutated; - } - - for (i = 63; i > 0; i--) // FIXME optimize - if (block[n][st[n][i]]) - break; - s->block_last_index[n] = i; - - score += get_block_rate(s, block[n], s->block_last_index[n], st[n]); - } - - if (score < 0) { - return 1; - } else { - restore_ac_coeffs(s, block, dir, st, zigzag_last_index); - return 0; - } -} - -/** - * modify mb_type & qscale so that encoding is actually possible in mpeg4 - */ -void ff_clean_mpeg4_qscales(MpegEncContext *s) -{ - int i; - int8_t *const qscale_table = s->current_picture.qscale_table; - - ff_clean_h263_qscales(s); - - if (s->pict_type == AV_PICTURE_TYPE_B) { - int odd = 0; - /* ok, come on, this isn't funny anymore, there's more code for - * handling this mpeg4 mess than for the actual adaptive quantization */ - - for (i = 0; i < s->mb_num; i++) { - int mb_xy = s->mb_index2xy[i]; - odd += qscale_table[mb_xy] & 1; - } - - if (2 * odd > s->mb_num) - odd = 1; - else - odd = 0; - - for (i = 0; i < s->mb_num; i++) { - int mb_xy = s->mb_index2xy[i]; - if ((qscale_table[mb_xy] & 1) != odd) - qscale_table[mb_xy]++; - if (qscale_table[mb_xy] > 31) - qscale_table[mb_xy] = 31; - } - - for (i = 1; i < s->mb_num; i++) { - int mb_xy = s->mb_index2xy[i]; - if (qscale_table[mb_xy] != qscale_table[s->mb_index2xy[i - 1]] && - (s->mb_type[mb_xy] & CANDIDATE_MB_TYPE_DIRECT)) { - s->mb_type[mb_xy] |= CANDIDATE_MB_TYPE_BIDIR; - } - } - } -} - -/** - * Encode the dc value. - * @param n block index (0-3 are luma, 4-5 are chroma) - */ -static inline void mpeg4_encode_dc(PutBitContext *s, int level, int n) -{ -#if 1 - /* DC will overflow if level is outside the [-255,255] range. */ - level += 256; - if (n < 4) { - /* luminance */ - put_bits(s, uni_DCtab_lum_len[level], uni_DCtab_lum_bits[level]); - } else { - /* chrominance */ - put_bits(s, uni_DCtab_chrom_len[level], uni_DCtab_chrom_bits[level]); - } -#else - int size, v; - /* find number of bits */ - size = 0; - v = abs(level); - while (v) { - v >>= 1; - size++; - } - - if (n < 4) { - /* luminance */ - put_bits(&s->pb, 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]); - } - - /* encode remaining bits */ - if (size > 0) { - if (level < 0) - level = (-level) ^ ((1 << size) - 1); - put_bits(&s->pb, size, level); - if (size > 8) - put_bits(&s->pb, 1, 1); - } -#endif -} - -static inline int mpeg4_get_dc_length(int level, int n) -{ - if (n < 4) - return uni_DCtab_lum_len[level + 256]; - else - return uni_DCtab_chrom_len[level + 256]; -} - -/** - * Encode an 8x8 block. - * @param n block index (0-3 are luma, 4-5 are chroma) - */ -static inline void mpeg4_encode_block(MpegEncContext *s, - int16_t *block, int n, int intra_dc, - uint8_t *scan_table, PutBitContext *dc_pb, - PutBitContext *ac_pb) -{ - int i, last_non_zero; - uint32_t *bits_tab; - uint8_t *len_tab; - const int last_index = s->block_last_index[n]; - - if (s->mb_intra) { // Note gcc (3.2.1 at least) will optimize this away - /* mpeg4 based DC predictor */ - mpeg4_encode_dc(dc_pb, intra_dc, n); - if (last_index < 1) - return; - i = 1; - bits_tab = uni_mpeg4_intra_rl_bits; - len_tab = uni_mpeg4_intra_rl_len; - } else { - if (last_index < 0) - return; - i = 0; - bits_tab = uni_mpeg4_inter_rl_bits; - len_tab = uni_mpeg4_inter_rl_len; - } - - /* AC coefs */ - last_non_zero = i - 1; - for (; i < last_index; i++) { - int level = block[scan_table[i]]; - if (level) { - int run = i - last_non_zero - 1; - level += 64; - if ((level & (~127)) == 0) { - const int index = UNI_MPEG4_ENC_INDEX(0, run, level); - put_bits(ac_pb, len_tab[index], bits_tab[index]); - } else { // ESC3 - put_bits(ac_pb, - 7 + 2 + 1 + 6 + 1 + 12 + 1, - (3 << 23) + (3 << 21) + (0 << 20) + (run << 14) + - (1 << 13) + (((level - 64) & 0xfff) << 1) + 1); - } - last_non_zero = i; - } - } - /* if (i <= last_index) */ { - int level = block[scan_table[i]]; - int run = i - last_non_zero - 1; - level += 64; - if ((level & (~127)) == 0) { - const int index = UNI_MPEG4_ENC_INDEX(1, run, level); - put_bits(ac_pb, len_tab[index], bits_tab[index]); - } else { // ESC3 - put_bits(ac_pb, - 7 + 2 + 1 + 6 + 1 + 12 + 1, - (3 << 23) + (3 << 21) + (1 << 20) + (run << 14) + - (1 << 13) + (((level - 64) & 0xfff) << 1) + 1); - } - } -} - -static int mpeg4_get_block_length(MpegEncContext *s, - int16_t *block, int n, - int intra_dc, uint8_t *scan_table) -{ - int i, last_non_zero; - uint8_t *len_tab; - const int last_index = s->block_last_index[n]; - int len = 0; - - if (s->mb_intra) { // Note gcc (3.2.1 at least) will optimize this away - /* mpeg4 based DC predictor */ - len += mpeg4_get_dc_length(intra_dc, n); - if (last_index < 1) - return len; - i = 1; - len_tab = uni_mpeg4_intra_rl_len; - } else { - if (last_index < 0) - return 0; - i = 0; - len_tab = uni_mpeg4_inter_rl_len; - } - - /* AC coefs */ - last_non_zero = i - 1; - for (; i < last_index; i++) { - int level = block[scan_table[i]]; - if (level) { - int run = i - last_non_zero - 1; - level += 64; - if ((level & (~127)) == 0) { - const int index = UNI_MPEG4_ENC_INDEX(0, run, level); - len += len_tab[index]; - } else { // ESC3 - len += 7 + 2 + 1 + 6 + 1 + 12 + 1; - } - last_non_zero = i; - } - } - /* if (i <= last_index) */ { - int level = block[scan_table[i]]; - int run = i - last_non_zero - 1; - level += 64; - if ((level & (~127)) == 0) { - const int index = UNI_MPEG4_ENC_INDEX(1, run, level); - len += len_tab[index]; - } else { // ESC3 - len += 7 + 2 + 1 + 6 + 1 + 12 + 1; - } - } - - return len; -} - -static inline void mpeg4_encode_blocks(MpegEncContext *s, int16_t block[6][64], - int intra_dc[6], uint8_t **scan_table, - PutBitContext *dc_pb, - PutBitContext *ac_pb) -{ - int i; - - if (scan_table) { - if (s->flags2 & CODEC_FLAG2_NO_OUTPUT) { - for (i = 0; i < 6; i++) - skip_put_bits(&s->pb, - mpeg4_get_block_length(s, block[i], i, - intra_dc[i], scan_table[i])); - } else { - /* encode each block */ - for (i = 0; i < 6; i++) - mpeg4_encode_block(s, block[i], i, - intra_dc[i], scan_table[i], dc_pb, ac_pb); - } - } else { - if (s->flags2 & CODEC_FLAG2_NO_OUTPUT) { - for (i = 0; i < 6; i++) - skip_put_bits(&s->pb, - mpeg4_get_block_length(s, block[i], i, 0, - s->intra_scantable.permutated)); - } else { - /* encode each block */ - for (i = 0; i < 6; i++) - mpeg4_encode_block(s, block[i], i, 0, - s->intra_scantable.permutated, dc_pb, ac_pb); - } - } -} - -static inline int get_b_cbp(MpegEncContext *s, int16_t block[6][64], - int motion_x, int motion_y, int mb_type) -{ - int cbp = 0, i; - - if (s->mpv_flags & FF_MPV_FLAG_CBP_RD) { - int score = 0; - const int lambda = s->lambda2 >> (FF_LAMBDA_SHIFT - 6); - - for (i = 0; i < 6; i++) { - if (s->coded_score[i] < 0) { - score += s->coded_score[i]; - cbp |= 1 << (5 - i); - } - } - - if (cbp) { - int zero_score = -6; - if ((motion_x | motion_y | s->dquant | mb_type) == 0) - zero_score -= 4; // 2 * MV + mb_type + cbp bit - - zero_score *= lambda; - if (zero_score <= score) - cbp = 0; - } - - for (i = 0; i < 6; i++) { - if (s->block_last_index[i] >= 0 && ((cbp >> (5 - i)) & 1) == 0) { - s->block_last_index[i] = -1; - s->dsp.clear_block(s->block[i]); - } - } - } else { - for (i = 0; i < 6; i++) { - if (s->block_last_index[i] >= 0) - cbp |= 1 << (5 - i); - } - } - return cbp; -} - -// FIXME this is duplicated to h263.c -static const int dquant_code[5] = { 1, 0, 9, 2, 3 }; - -void ff_mpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], - int motion_x, int motion_y) -{ - int cbpc, cbpy, pred_x, pred_y; - PutBitContext *const pb2 = s->data_partitioning ? &s->pb2 : &s->pb; - PutBitContext *const tex_pb = s->data_partitioning && s->pict_type != AV_PICTURE_TYPE_B ? &s->tex_pb : &s->pb; - PutBitContext *const dc_pb = s->data_partitioning && s->pict_type != AV_PICTURE_TYPE_I ? &s->pb2 : &s->pb; - const int interleaved_stats = (s->flags & CODEC_FLAG_PASS1) && !s->data_partitioning ? 1 : 0; - - if (!s->mb_intra) { - int i, cbp; - - if (s->pict_type == AV_PICTURE_TYPE_B) { - /* convert from mv_dir to type */ - static const int mb_type_table[8] = { -1, 3, 2, 1, -1, -1, -1, 0 }; - int mb_type = mb_type_table[s->mv_dir]; - - if (s->mb_x == 0) { - for (i = 0; i < 2; i++) - s->last_mv[i][0][0] = - s->last_mv[i][0][1] = - s->last_mv[i][1][0] = - s->last_mv[i][1][1] = 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 & ... - s->skip_count++; - s->mv[0][0][0] = - s->mv[0][0][1] = - s->mv[1][0][0] = - s->mv[1][0][1] = 0; - s->mv_dir = MV_DIR_FORWARD; // doesn't matter - s->qscale -= s->dquant; -// s->mb_skipped = 1; - - return; - } - - cbp = get_b_cbp(s, block, motion_x, motion_y, mb_type); - - if ((cbp | motion_x | motion_y | mb_type) == 0) { - /* direct MB with MV={0,0} */ - av_assert2(s->dquant == 0); - - put_bits(&s->pb, 1, 1); /* mb not coded modb1=1 */ - - if (interleaved_stats) { - s->misc_bits++; - s->last_bits++; - } - s->skip_count++; - return; - } - - put_bits(&s->pb, 1, 0); /* mb coded modb1=0 */ - put_bits(&s->pb, 1, cbp ? 0 : 1); /* modb2 */ // FIXME merge - put_bits(&s->pb, mb_type + 1, 1); // this table is so simple that we don't need it :) - if (cbp) - put_bits(&s->pb, 6, cbp); - - if (cbp && mb_type) { - if (s->dquant) - put_bits(&s->pb, 2, (s->dquant >> 2) + 3); - else - put_bits(&s->pb, 1, 0); - } else - s->qscale -= s->dquant; - - if (!s->progressive_sequence) { - if (cbp) - put_bits(&s->pb, 1, s->interlaced_dct); - if (mb_type) // not direct mode - put_bits(&s->pb, 1, s->mv_type == MV_TYPE_FIELD); - } - - if (interleaved_stats) - s->misc_bits += get_bits_diff(s); - - if (!mb_type) { - 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 { - 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, - s->mv[0][0][0] - s->last_mv[0][0][0], - s->mv[0][0][1] - s->last_mv[0][0][1], - s->f_code); - s->last_mv[0][0][0] = - s->last_mv[0][1][0] = s->mv[0][0][0]; - s->last_mv[0][0][1] = - s->last_mv[0][1][1] = s->mv[0][0][1]; - s->f_count++; - } - if (s->mv_dir & MV_DIR_BACKWARD) { - ff_h263_encode_motion_vector(s, - s->mv[1][0][0] - s->last_mv[1][0][0], - s->mv[1][0][1] - s->last_mv[1][0][1], - s->b_code); - s->last_mv[1][0][0] = - s->last_mv[1][1][0] = s->mv[1][0][0]; - s->last_mv[1][0][1] = - s->last_mv[1][1][1] = s->mv[1][0][1]; - s->b_count++; - } - } else { - if (s->mv_dir & MV_DIR_FORWARD) { - put_bits(&s->pb, 1, s->field_select[0][0]); - put_bits(&s->pb, 1, s->field_select[0][1]); - } - if (s->mv_dir & MV_DIR_BACKWARD) { - put_bits(&s->pb, 1, s->field_select[1][0]); - put_bits(&s->pb, 1, s->field_select[1][1]); - } - if (s->mv_dir & MV_DIR_FORWARD) { - for (i = 0; i < 2; i++) { - ff_h263_encode_motion_vector(s, - s->mv[0][i][0] - s->last_mv[0][i][0], - s->mv[0][i][1] - s->last_mv[0][i][1] / 2, - s->f_code); - s->last_mv[0][i][0] = s->mv[0][i][0]; - s->last_mv[0][i][1] = s->mv[0][i][1] * 2; - } - s->f_count++; - } - if (s->mv_dir & MV_DIR_BACKWARD) { - for (i = 0; i < 2; i++) { - ff_h263_encode_motion_vector(s, - s->mv[1][i][0] - s->last_mv[1][i][0], - s->mv[1][i][1] - s->last_mv[1][i][1] / 2, - s->b_code); - s->last_mv[1][i][0] = s->mv[1][i][0]; - s->last_mv[1][i][1] = s->mv[1][i][1] * 2; - } - s->b_count++; - } - } - } - - if (interleaved_stats) - s->mv_bits += get_bits_diff(s); - - mpeg4_encode_blocks(s, block, NULL, NULL, NULL, &s->pb); - - if (interleaved_stats) - s->p_tex_bits += get_bits_diff(s); - } else { /* s->pict_type==AV_PICTURE_TYPE_B */ - cbp = get_p_cbp(s, block, motion_x, motion_y); - - if ((cbp | motion_x | motion_y | s->dquant) == 0 && - s->mv_type == MV_TYPE_16X16) { - /* check if the B frames can skip it too, as we must skip it - * if we skip here why didn't they just compress - * the skip-mb bits instead of reusing them ?! */ - if (s->max_b_frames > 0) { - int i; - int x, y, offset; - uint8_t *p_pic; - - x = s->mb_x * 16; - y = s->mb_y * 16; - - offset = x + y * s->linesize; - p_pic = s->new_picture.f.data[0] + offset; - - s->mb_skipped = 1; - for (i = 0; i < s->max_b_frames; i++) { - uint8_t *b_pic; - int diff; - Picture *pic = s->reordered_input_picture[i + 1]; - - if (!pic || pic->f.pict_type != AV_PICTURE_TYPE_B) - break; - - b_pic = pic->f.data[0] + offset; - if (!pic->shared) - b_pic += INPLACE_OFFSET; - - 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; - } - } - } else - s->mb_skipped = 1; - - if (s->mb_skipped == 1) { - /* skip macroblock */ - put_bits(&s->pb, 1, 1); - - if (interleaved_stats) { - s->misc_bits++; - s->last_bits++; - } - s->skip_count++; - - return; - } - } - - put_bits(&s->pb, 1, 0); /* mb coded */ - cbpc = cbp & 3; - cbpy = cbp >> 2; - cbpy ^= 0xf; - if (s->mv_type == MV_TYPE_16X16) { - if (s->dquant) - cbpc += 8; - put_bits(&s->pb, - ff_h263_inter_MCBPC_bits[cbpc], - ff_h263_inter_MCBPC_code[cbpc]); - - put_bits(pb2, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]); - if (s->dquant) - put_bits(pb2, 2, dquant_code[s->dquant + 2]); - - if (!s->progressive_sequence) { - if (cbp) - put_bits(pb2, 1, s->interlaced_dct); - put_bits(pb2, 1, 0); - } - - if (interleaved_stats) - s->misc_bits += get_bits_diff(s); - - /* motion vectors: 16x16 mode */ - ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y); - - ff_h263_encode_motion_vector(s, - motion_x - pred_x, - motion_y - pred_y, - s->f_code); - } else if (s->mv_type == MV_TYPE_FIELD) { - if (s->dquant) - cbpc += 8; - put_bits(&s->pb, - ff_h263_inter_MCBPC_bits[cbpc], - ff_h263_inter_MCBPC_code[cbpc]); - - put_bits(pb2, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]); - if (s->dquant) - put_bits(pb2, 2, dquant_code[s->dquant + 2]); - - av_assert2(!s->progressive_sequence); - if (cbp) - put_bits(pb2, 1, s->interlaced_dct); - put_bits(pb2, 1, 1); - - if (interleaved_stats) - s->misc_bits += get_bits_diff(s); - - /* motion vectors: 16x8 interlaced mode */ - ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y); - pred_y /= 2; - - put_bits(&s->pb, 1, s->field_select[0][0]); - put_bits(&s->pb, 1, s->field_select[0][1]); - - ff_h263_encode_motion_vector(s, - s->mv[0][0][0] - pred_x, - s->mv[0][0][1] - pred_y, - s->f_code); - ff_h263_encode_motion_vector(s, - s->mv[0][1][0] - pred_x, - s->mv[0][1][1] - pred_y, - s->f_code); - } else { - 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]); - put_bits(pb2, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]); - - if (!s->progressive_sequence && cbp) - put_bits(pb2, 1, s->interlaced_dct); - - if (interleaved_stats) - s->misc_bits += get_bits_diff(s); - - for (i = 0; i < 4; i++) { - /* motion vectors: 8x8 mode*/ - ff_h263_pred_motion(s, i, 0, &pred_x, &pred_y); - - ff_h263_encode_motion_vector(s, - s->current_picture.motion_val[0][s->block_index[i]][0] - pred_x, - s->current_picture.motion_val[0][s->block_index[i]][1] - pred_y, - s->f_code); - } - } - - if (interleaved_stats) - s->mv_bits += get_bits_diff(s); - - mpeg4_encode_blocks(s, block, NULL, NULL, NULL, tex_pb); - - if (interleaved_stats) - s->p_tex_bits += get_bits_diff(s); - - s->f_count++; - } - } else { - int cbp; - int dc_diff[6]; // dc values with the dc prediction subtracted - int dir[6]; // prediction direction - int zigzag_last_index[6]; - uint8_t *scan_table[6]; - int i; - - for (i = 0; i < 6; i++) - dc_diff[i] = ff_mpeg4_pred_dc(s, i, block[i][0], &dir[i], 1); - - if (s->flags & CODEC_FLAG_AC_PRED) { - s->ac_pred = decide_ac_pred(s, block, dir, scan_table, zigzag_last_index); - } else { - for (i = 0; i < 6; i++) - scan_table[i] = s->intra_scantable.permutated; - } - - /* compute cbp */ - cbp = 0; - for (i = 0; i < 6; i++) - if (s->block_last_index[i] >= 1) - cbp |= 1 << (5 - i); - - cbpc = cbp & 3; - if (s->pict_type == AV_PICTURE_TYPE_I) { - if (s->dquant) - cbpc += 4; - put_bits(&s->pb, - ff_h263_intra_MCBPC_bits[cbpc], - ff_h263_intra_MCBPC_code[cbpc]); - } else { - if (s->dquant) - cbpc += 8; - put_bits(&s->pb, 1, 0); /* mb coded */ - put_bits(&s->pb, - ff_h263_inter_MCBPC_bits[cbpc + 4], - ff_h263_inter_MCBPC_code[cbpc + 4]); - } - put_bits(pb2, 1, s->ac_pred); - cbpy = cbp >> 2; - put_bits(pb2, ff_h263_cbpy_tab[cbpy][1], ff_h263_cbpy_tab[cbpy][0]); - if (s->dquant) - put_bits(dc_pb, 2, dquant_code[s->dquant + 2]); - - if (!s->progressive_sequence) - put_bits(dc_pb, 1, s->interlaced_dct); - - if (interleaved_stats) - s->misc_bits += get_bits_diff(s); - - mpeg4_encode_blocks(s, block, dc_diff, scan_table, dc_pb, tex_pb); - - if (interleaved_stats) - s->i_tex_bits += get_bits_diff(s); - s->i_count++; - - /* restore ac coeffs & last_index stuff - * if we messed them up with the prediction */ - if (s->ac_pred) - restore_ac_coeffs(s, block, dir, scan_table, zigzag_last_index); - } -} - -/** - * add mpeg4 stuffing bits (01...1) - */ -void ff_mpeg4_stuffing(PutBitContext *pbc) -{ - int length; - put_bits(pbc, 1, 0); - length = (-put_bits_count(pbc)) & 7; - if (length) - put_bits(pbc, length, (1 << length) - 1); -} - -/* must be called before writing the header */ -void ff_set_mpeg4_time(MpegEncContext *s) -{ - if (s->pict_type == AV_PICTURE_TYPE_B) { - ff_mpeg4_init_direct_mv(s); - } else { - s->last_time_base = s->time_base; - s->time_base = FFUDIV(s->time, s->avctx->time_base.den); - } -} - -static void mpeg4_encode_gop_header(MpegEncContext *s) -{ - int hours, minutes, seconds; - int64_t time; - - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, GOP_STARTCODE); - - time = s->current_picture_ptr->f.pts; - 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 = 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); - put_bits(&s->pb, 1, 1); - put_bits(&s->pb, 6, seconds); - - put_bits(&s->pb, 1, !!(s->flags & CODEC_FLAG_CLOSED_GOP)); - put_bits(&s->pb, 1, 0); // broken link == NO - - ff_mpeg4_stuffing(&s->pb); -} - -static void mpeg4_encode_visual_object_header(MpegEncContext *s) -{ - int profile_and_level_indication; - int vo_ver_id; - - if (s->avctx->profile != FF_PROFILE_UNKNOWN) { - profile_and_level_indication = s->avctx->profile << 4; - } else if (s->max_b_frames || s->quarter_sample) { - profile_and_level_indication = 0xF0; // adv simple - } else { - profile_and_level_indication = 0x00; // simple - } - - if (s->avctx->level != FF_LEVEL_UNKNOWN) - profile_and_level_indication |= s->avctx->level; - else - profile_and_level_indication |= 1; // level 1 - - if (profile_and_level_indication >> 4 == 0xF) - vo_ver_id = 5; - else - vo_ver_id = 1; - - // FIXME levels - - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, VOS_STARTCODE); - - put_bits(&s->pb, 8, profile_and_level_indication); - - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, VISUAL_OBJ_STARTCODE); - - put_bits(&s->pb, 1, 1); - put_bits(&s->pb, 4, vo_ver_id); - put_bits(&s->pb, 3, 1); // priority - - put_bits(&s->pb, 4, 1); // visual obj type== video obj - - put_bits(&s->pb, 1, 0); // video signal type == no clue // FIXME - - ff_mpeg4_stuffing(&s->pb); -} - -static void mpeg4_encode_vol_header(MpegEncContext *s, - int vo_number, - int vol_number) -{ - int vo_ver_id; - - if (!CONFIG_MPEG4_ENCODER) - return; - - if (s->max_b_frames || s->quarter_sample) { - vo_ver_id = 5; - s->vo_type = ADV_SIMPLE_VO_TYPE; - } else { - vo_ver_id = 1; - s->vo_type = SIMPLE_VO_TYPE; - } - - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, 0x100 + vo_number); /* video obj */ - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, 0x120 + vol_number); /* video obj layer */ - - put_bits(&s->pb, 1, 0); /* random access vol */ - put_bits(&s->pb, 8, s->vo_type); /* video obj type indication */ - if (s->workaround_bugs & FF_BUG_MS) { - put_bits(&s->pb, 1, 0); /* is obj layer id= no */ - } else { - put_bits(&s->pb, 1, 1); /* is obj layer id= yes */ - put_bits(&s->pb, 4, vo_ver_id); /* is obj layer ver id */ - put_bits(&s->pb, 3, 1); /* is obj layer priority */ - } - - s->aspect_ratio_info = ff_h263_aspect_to_info(s->avctx->sample_aspect_ratio); - - 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); - } - - if (s->workaround_bugs & FF_BUG_MS) { - put_bits(&s->pb, 1, 0); /* vol control parameters= no @@@ */ - } else { - put_bits(&s->pb, 1, 1); /* vol control parameters= yes */ - put_bits(&s->pb, 2, 1); /* chroma format YUV 420/YV12 */ - put_bits(&s->pb, 1, s->low_delay); - put_bits(&s->pb, 1, 0); /* vbv parameters= no */ - } - - put_bits(&s->pb, 2, RECT_SHAPE); /* vol shape= rectangle */ - put_bits(&s->pb, 1, 1); /* marker bit */ - - put_bits(&s->pb, 16, s->avctx->time_base.den); - if (s->time_increment_bits < 1) - s->time_increment_bits = 1; - put_bits(&s->pb, 1, 1); /* marker bit */ - put_bits(&s->pb, 1, 0); /* fixed vop rate=no */ - put_bits(&s->pb, 1, 1); /* marker bit */ - put_bits(&s->pb, 13, s->width); /* vol width */ - put_bits(&s->pb, 1, 1); /* marker bit */ - put_bits(&s->pb, 13, s->height); /* vol height */ - put_bits(&s->pb, 1, 1); /* marker bit */ - put_bits(&s->pb, 1, s->progressive_sequence ? 0 : 1); - put_bits(&s->pb, 1, 1); /* obmc disable */ - if (vo_ver_id == 1) - put_bits(&s->pb, 1, 0); /* sprite enable */ - else - put_bits(&s->pb, 2, 0); /* sprite enable */ - - put_bits(&s->pb, 1, 0); /* not 8 bit == false */ - put_bits(&s->pb, 1, s->mpeg_quant); /* quant type= (0=h263 style)*/ - - if (s->mpeg_quant) { - ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix); - ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix); - } - - if (vo_ver_id != 1) - put_bits(&s->pb, 1, s->quarter_sample); - put_bits(&s->pb, 1, 1); /* complexity estimation disable */ - put_bits(&s->pb, 1, s->rtp_mode ? 0 : 1); /* resync marker disable */ - put_bits(&s->pb, 1, s->data_partitioning ? 1 : 0); - if (s->data_partitioning) - put_bits(&s->pb, 1, 0); /* no rvlc */ - - if (vo_ver_id != 1) { - put_bits(&s->pb, 1, 0); /* newpred */ - put_bits(&s->pb, 1, 0); /* reduced res vop */ - } - put_bits(&s->pb, 1, 0); /* scalability */ - - ff_mpeg4_stuffing(&s->pb); - - /* user data */ - if (!(s->flags & CODEC_FLAG_BITEXACT)) { - put_bits(&s->pb, 16, 0); - put_bits(&s->pb, 16, 0x1B2); /* user_data */ - avpriv_put_string(&s->pb, LIBAVCODEC_IDENT, 0); - } -} - -/* write mpeg4 VOP header */ -void ff_mpeg4_encode_picture_header(MpegEncContext *s, int picture_number) -{ - int time_incr; - int time_div, time_mod; - - if (s->pict_type == AV_PICTURE_TYPE_I) { - if (!(s->flags & CODEC_FLAG_GLOBAL_HEADER)) { - if (s->strict_std_compliance < FF_COMPLIANCE_VERY_STRICT) // HACK, the reference sw is buggy - mpeg4_encode_visual_object_header(s); - if (s->strict_std_compliance < FF_COMPLIANCE_VERY_STRICT || picture_number == 0) // HACK, the reference sw is buggy - mpeg4_encode_vol_header(s, 0, 0); - } - if (!(s->workaround_bugs & FF_BUG_MS)) - mpeg4_encode_gop_header(s); - } - - s->partitioned_frame = s->data_partitioning && s->pict_type != AV_PICTURE_TYPE_B; - - put_bits(&s->pb, 16, 0); /* vop header */ - put_bits(&s->pb, 16, VOP_STARTCODE); /* vop header */ - put_bits(&s->pb, 2, s->pict_type - 1); /* pict type: I = 0 , P = 1 */ - - 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; - av_assert0(time_incr >= 0); - while (time_incr--) - put_bits(&s->pb, 1, 1); - - put_bits(&s->pb, 1, 0); - - put_bits(&s->pb, 1, 1); /* marker */ - put_bits(&s->pb, s->time_increment_bits, time_mod); /* time increment */ - put_bits(&s->pb, 1, 1); /* marker */ - put_bits(&s->pb, 1, 1); /* vop coded */ - if (s->pict_type == AV_PICTURE_TYPE_P) { - put_bits(&s->pb, 1, s->no_rounding); /* rounding type */ - } - put_bits(&s->pb, 3, 0); /* intra dc VLC threshold */ - if (!s->progressive_sequence) { - put_bits(&s->pb, 1, s->current_picture_ptr->f.top_field_first); - put_bits(&s->pb, 1, s->alternate_scan); - } - // FIXME sprite stuff - - put_bits(&s->pb, 5, s->qscale); - - if (s->pict_type != AV_PICTURE_TYPE_I) - put_bits(&s->pb, 3, s->f_code); /* fcode_for */ - if (s->pict_type == AV_PICTURE_TYPE_B) - put_bits(&s->pb, 3, s->b_code); /* fcode_back */ -} - -static av_cold void init_uni_dc_tab(void) -{ - int level, uni_code, uni_len; - - for (level = -256; level < 256; level++) { - int size, v, l; - /* find number of bits */ - size = 0; - v = abs(level); - while (v) { - v >>= 1; - size++; - } - - if (level < 0) - l = (-level) ^ ((1 << size) - 1); - else - l = level; - - /* luminance */ - uni_code = ff_mpeg4_DCtab_lum[size][0]; - uni_len = ff_mpeg4_DCtab_lum[size][1]; - - if (size > 0) { - uni_code <<= size; - uni_code |= l; - uni_len += size; - if (size > 8) { - uni_code <<= 1; - uni_code |= 1; - uni_len++; - } - } - uni_DCtab_lum_bits[level + 256] = uni_code; - uni_DCtab_lum_len[level + 256] = uni_len; - - /* chrominance */ - uni_code = ff_mpeg4_DCtab_chrom[size][0]; - uni_len = ff_mpeg4_DCtab_chrom[size][1]; - - if (size > 0) { - uni_code <<= size; - uni_code |= l; - uni_len += size; - if (size > 8) { - uni_code <<= 1; - uni_code |= 1; - uni_len++; - } - } - uni_DCtab_chrom_bits[level + 256] = uni_code; - uni_DCtab_chrom_len[level + 256] = uni_len; - } -} - -static av_cold void init_uni_mpeg4_rl_tab(RLTable *rl, uint32_t *bits_tab, - uint8_t *len_tab) -{ - int slevel, run, last; - - av_assert0(MAX_LEVEL >= 64); - av_assert0(MAX_RUN >= 63); - - for (slevel = -64; slevel < 64; slevel++) { - if (slevel == 0) - continue; - for (run = 0; run < 64; run++) { - for (last = 0; last <= 1; last++) { - const int index = UNI_MPEG4_ENC_INDEX(last, run, slevel + 64); - int level = slevel < 0 ? -slevel : slevel; - int sign = slevel < 0 ? 1 : 0; - int bits, len, code; - int level1, run1; - - len_tab[index] = 100; - - /* ESC0 */ - code = get_rl_index(rl, last, run, level); - bits = rl->table_vlc[code][0]; - len = rl->table_vlc[code][1]; - bits = bits * 2 + sign; - len++; - - if (code != rl->n && len < len_tab[index]) { - bits_tab[index] = bits; - len_tab[index] = len; - } - /* ESC1 */ - bits = rl->table_vlc[rl->n][0]; - len = rl->table_vlc[rl->n][1]; - bits = bits * 2; - len++; // esc1 - level1 = level - rl->max_level[last][run]; - if (level1 > 0) { - code = get_rl_index(rl, last, run, level1); - bits <<= rl->table_vlc[code][1]; - len += rl->table_vlc[code][1]; - bits += rl->table_vlc[code][0]; - bits = bits * 2 + sign; - len++; - - if (code != rl->n && len < len_tab[index]) { - bits_tab[index] = bits; - len_tab[index] = len; - } - } - /* ESC2 */ - bits = rl->table_vlc[rl->n][0]; - len = rl->table_vlc[rl->n][1]; - bits = bits * 4 + 2; - len += 2; // esc2 - run1 = run - rl->max_run[last][level] - 1; - if (run1 >= 0) { - code = get_rl_index(rl, last, run1, level); - bits <<= rl->table_vlc[code][1]; - len += rl->table_vlc[code][1]; - bits += rl->table_vlc[code][0]; - bits = bits * 2 + sign; - len++; - - if (code != rl->n && len < len_tab[index]) { - bits_tab[index] = bits; - len_tab[index] = len; - } - } - /* ESC3 */ - bits = rl->table_vlc[rl->n][0]; - len = rl->table_vlc[rl->n][1]; - bits = bits * 4 + 3; - len += 2; // esc3 - bits = bits * 2 + last; - len++; - bits = bits * 64 + run; - len += 6; - bits = bits * 2 + 1; - len++; // marker - bits = bits * 4096 + (slevel & 0xfff); - len += 12; - bits = bits * 2 + 1; - len++; // marker - - if (len < len_tab[index]) { - bits_tab[index] = bits; - len_tab[index] = len; - } - } - } - } -} - -static av_cold int encode_init(AVCodecContext *avctx) -{ - MpegEncContext *s = avctx->priv_data; - 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; - - if (!done) { - done = 1; - - init_uni_dc_tab(); - - ff_init_rl(&ff_mpeg4_rl_intra, ff_mpeg4_static_rl_table_store[0]); - - init_uni_mpeg4_rl_tab(&ff_mpeg4_rl_intra, uni_mpeg4_intra_rl_bits, uni_mpeg4_intra_rl_len); - init_uni_mpeg4_rl_tab(&ff_h263_rl_inter, uni_mpeg4_inter_rl_bits, uni_mpeg4_inter_rl_len); - } - - s->min_qcoeff = -2048; - s->max_qcoeff = 2047; - s->intra_ac_vlc_length = uni_mpeg4_intra_rl_len; - s->intra_ac_vlc_last_length = uni_mpeg4_intra_rl_len + 128 * 64; - s->inter_ac_vlc_length = uni_mpeg4_inter_rl_len; - s->inter_ac_vlc_last_length = uni_mpeg4_inter_rl_len + 128 * 64; - s->luma_dc_vlc_length = uni_DCtab_lum_len; - s->ac_esc_length = 7 + 2 + 1 + 6 + 1 + 12 + 1; - s->y_dc_scale_table = ff_mpeg4_y_dc_scale_table; - s->c_dc_scale_table = ff_mpeg4_c_dc_scale_table; - - if (s->flags & CODEC_FLAG_GLOBAL_HEADER) { - s->avctx->extradata = av_malloc(1024); - init_put_bits(&s->pb, s->avctx->extradata, 1024); - - if (!(s->workaround_bugs & FF_BUG_MS)) - mpeg4_encode_visual_object_header(s); - mpeg4_encode_vol_header(s, 0, 0); - -// ff_mpeg4_stuffing(&s->pb); ? - flush_put_bits(&s->pb); - s->avctx->extradata_size = (put_bits_count(&s->pb) + 7) >> 3; - } - return 0; -} - -void ff_mpeg4_init_partitions(MpegEncContext *s) -{ - uint8_t *start = put_bits_ptr(&s->pb); - uint8_t *end = s->pb.buf_end; - int size = end - start; - int pb_size = (((intptr_t)start + size / 3) & (~3)) - (intptr_t)start; - int tex_size = (size - 2 * pb_size) & (~3); - - set_put_bits_buffer_size(&s->pb, pb_size); - init_put_bits(&s->tex_pb, start + pb_size, tex_size); - init_put_bits(&s->pb2, start + pb_size + tex_size, pb_size); -} - -void ff_mpeg4_merge_partitions(MpegEncContext *s) -{ - const int pb2_len = put_bits_count(&s->pb2); - const int tex_pb_len = put_bits_count(&s->tex_pb); - const int bits = put_bits_count(&s->pb); - - if (s->pict_type == AV_PICTURE_TYPE_I) { - put_bits(&s->pb, 19, DC_MARKER); - s->misc_bits += 19 + pb2_len + bits - s->last_bits; - s->i_tex_bits += tex_pb_len; - } else { - put_bits(&s->pb, 17, MOTION_MARKER); - s->misc_bits += 17 + pb2_len; - s->mv_bits += bits - s->last_bits; - s->p_tex_bits += tex_pb_len; - } - - flush_put_bits(&s->pb2); - flush_put_bits(&s->tex_pb); - - set_put_bits_buffer_size(&s->pb, s->pb2.buf_end - s->pb.buf); - avpriv_copy_bits(&s->pb, s->pb2.buf, pb2_len); - avpriv_copy_bits(&s->pb, s->tex_pb.buf, tex_pb_len); - s->last_bits = put_bits_count(&s->pb); -} - -void ff_mpeg4_encode_video_packet_header(MpegEncContext *s) -{ - int mb_num_bits = av_log2(s->mb_num - 1) + 1; - - put_bits(&s->pb, ff_mpeg4_get_video_packet_prefix_length(s), 0); - put_bits(&s->pb, 1, 1); - - put_bits(&s->pb, mb_num_bits, s->mb_x + s->mb_y * s->mb_width); - put_bits(&s->pb, s->quant_precision, s->qscale); - put_bits(&s->pb, 1, 0); /* no HEC */ -} - -#define OFFSET(x) offsetof(MpegEncContext, x) -#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM -static const AVOption options[] = { - { "data_partitioning", "Use data partitioning.", OFFSET(data_partitioning), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, - { "alternate_scan", "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, - FF_MPV_COMMON_OPTS - { NULL }, -}; - -static const AVClass mpeg4enc_class = { - .class_name = "MPEG4 encoder", - .item_name = av_default_item_name, - .option = options, - .version = LIBAVUTIL_VERSION_INT, -}; - -AVCodec ff_mpeg4_encoder = { - .name = "mpeg4", - .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2"), - .type = AVMEDIA_TYPE_VIDEO, - .id = AV_CODEC_ID_MPEG4, - .priv_data_size = sizeof(MpegEncContext), - .init = encode_init, - .encode2 = ff_MPV_encode_picture, - .close = ff_MPV_encode_end, - .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, - .capabilities = CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS, - .priv_class = &mpeg4enc_class, -}; |