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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * MJPEG encoder |
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| 3 | * Copyright (c) 2000, 2001 Fabrice Bellard |
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| 4 | * Copyright (c) 2003 Alex Beregszaszi |
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| 5 | * Copyright (c) 2003-2004 Michael Niedermayer |
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| 6 | * |
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| 7 | * Support for external huffman table, various fixes (AVID workaround), |
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| 8 | * aspecting, new decode_frame mechanism and apple mjpeg-b support |
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| 9 | * by Alex Beregszaszi |
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| 10 | * |
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| 11 | * This file is part of FFmpeg. |
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| 12 | * |
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| 13 | * FFmpeg is free software; you can redistribute it and/or |
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| 14 | * modify it under the terms of the GNU Lesser General Public |
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| 15 | * License as published by the Free Software Foundation; either |
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| 16 | * version 2.1 of the License, or (at your option) any later version. |
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| 17 | * |
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| 18 | * FFmpeg is distributed in the hope that it will be useful, |
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| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 21 | * Lesser General Public License for more details. |
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| 22 | * |
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| 23 | * You should have received a copy of the GNU Lesser General Public |
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| 24 | * License along with FFmpeg; if not, write to the Free Software |
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| 25 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 26 | */ |
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| 27 | |||
| 28 | /** |
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| 29 | * @file |
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| 30 | * MJPEG encoder. |
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| 31 | */ |
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| 32 | |||
| 33 | #include "avcodec.h" |
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| 34 | #include "mpegvideo.h" |
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| 35 | #include "mjpeg.h" |
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| 36 | #include "mjpegenc.h" |
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| 37 | |||
| 38 | /* use two quantizer tables (one for luminance and one for chrominance) */ |
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| 39 | /* not yet working */ |
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| 40 | #undef TWOMATRIXES |
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| 41 | |||
| 42 | |||
| 43 | av_cold int ff_mjpeg_encode_init(MpegEncContext *s) |
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| 44 | { |
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| 45 | MJpegContext *m; |
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| 46 | |||
| 47 | if (s->width > 65500 || s->height > 65500) { |
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| 48 | av_log(s, AV_LOG_ERROR, "JPEG does not support resolutions above 65500x65500\n"); |
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| 49 | return -1; |
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| 50 | } |
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| 51 | |||
| 52 | m = av_malloc(sizeof(MJpegContext)); |
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| 53 | if (!m) |
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| 54 | return -1; |
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| 55 | |||
| 56 | s->min_qcoeff=-1023; |
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| 57 | s->max_qcoeff= 1023; |
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| 58 | |||
| 59 | /* build all the huffman tables */ |
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| 60 | ff_mjpeg_build_huffman_codes(m->huff_size_dc_luminance, |
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| 61 | m->huff_code_dc_luminance, |
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| 62 | avpriv_mjpeg_bits_dc_luminance, |
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| 63 | avpriv_mjpeg_val_dc); |
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| 64 | ff_mjpeg_build_huffman_codes(m->huff_size_dc_chrominance, |
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| 65 | m->huff_code_dc_chrominance, |
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| 66 | avpriv_mjpeg_bits_dc_chrominance, |
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| 67 | avpriv_mjpeg_val_dc); |
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| 68 | ff_mjpeg_build_huffman_codes(m->huff_size_ac_luminance, |
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| 69 | m->huff_code_ac_luminance, |
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| 70 | avpriv_mjpeg_bits_ac_luminance, |
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| 71 | avpriv_mjpeg_val_ac_luminance); |
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| 72 | ff_mjpeg_build_huffman_codes(m->huff_size_ac_chrominance, |
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| 73 | m->huff_code_ac_chrominance, |
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| 74 | avpriv_mjpeg_bits_ac_chrominance, |
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| 75 | avpriv_mjpeg_val_ac_chrominance); |
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| 76 | |||
| 77 | s->mjpeg_ctx = m; |
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| 78 | return 0; |
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| 79 | } |
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| 80 | |||
| 81 | void ff_mjpeg_encode_close(MpegEncContext *s) |
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| 82 | { |
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| 83 | av_free(s->mjpeg_ctx); |
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| 84 | } |
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| 85 | |||
| 86 | /* table_class: 0 = DC coef, 1 = AC coefs */ |
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| 87 | static int put_huffman_table(MpegEncContext *s, int table_class, int table_id, |
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| 88 | const uint8_t *bits_table, const uint8_t *value_table) |
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| 89 | { |
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| 90 | PutBitContext *p = &s->pb; |
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| 91 | int n, i; |
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| 92 | |||
| 93 | put_bits(p, 4, table_class); |
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| 94 | put_bits(p, 4, table_id); |
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| 95 | |||
| 96 | n = 0; |
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| 97 | for(i=1;i<=16;i++) { |
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| 98 | n += bits_table[i]; |
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| 99 | put_bits(p, 8, bits_table[i]); |
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| 100 | } |
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| 101 | |||
| 102 | for(i=0;i |
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| 103 | put_bits(p, 8, value_table[i]); |
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| 104 | |||
| 105 | return n + 17; |
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| 106 | } |
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| 107 | |||
| 108 | static void jpeg_table_header(MpegEncContext *s) |
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| 109 | { |
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| 110 | PutBitContext *p = &s->pb; |
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| 111 | int i, j, size; |
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| 112 | uint8_t *ptr; |
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| 113 | |||
| 114 | if (s->avctx->codec_id != AV_CODEC_ID_LJPEG) { |
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| 115 | /* quant matrixes */ |
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| 116 | put_marker(p, DQT); |
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| 117 | #ifdef TWOMATRIXES |
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| 118 | put_bits(p, 16, 2 + 2 * (1 + 64)); |
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| 119 | #else |
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| 120 | put_bits(p, 16, 2 + 1 * (1 + 64)); |
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| 121 | #endif |
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| 122 | put_bits(p, 4, 0); /* 8 bit precision */ |
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| 123 | put_bits(p, 4, 0); /* table 0 */ |
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| 124 | for(i=0;i<64;i++) { |
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| 125 | j = s->intra_scantable.permutated[i]; |
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| 126 | put_bits(p, 8, s->intra_matrix[j]); |
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| 127 | } |
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| 128 | #ifdef TWOMATRIXES |
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| 129 | put_bits(p, 4, 0); /* 8 bit precision */ |
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| 130 | put_bits(p, 4, 1); /* table 1 */ |
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| 131 | for(i=0;i<64;i++) { |
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| 132 | j = s->intra_scantable.permutated[i]; |
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| 133 | put_bits(p, 8, s->chroma_intra_matrix[j]); |
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| 134 | } |
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| 135 | #endif |
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| 136 | } |
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| 137 | |||
| 138 | if(s->avctx->active_thread_type & FF_THREAD_SLICE){ |
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| 139 | put_marker(p, DRI); |
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| 140 | put_bits(p, 16, 4); |
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| 141 | put_bits(p, 16, (s->width-1)/(8*s->mjpeg_hsample[0]) + 1); |
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| 142 | } |
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| 143 | |||
| 144 | /* huffman table */ |
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| 145 | put_marker(p, DHT); |
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| 146 | flush_put_bits(p); |
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| 147 | ptr = put_bits_ptr(p); |
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| 148 | put_bits(p, 16, 0); /* patched later */ |
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| 149 | size = 2; |
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| 150 | size += put_huffman_table(s, 0, 0, avpriv_mjpeg_bits_dc_luminance, |
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| 151 | avpriv_mjpeg_val_dc); |
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| 152 | size += put_huffman_table(s, 0, 1, avpriv_mjpeg_bits_dc_chrominance, |
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| 153 | avpriv_mjpeg_val_dc); |
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| 154 | |||
| 155 | size += put_huffman_table(s, 1, 0, avpriv_mjpeg_bits_ac_luminance, |
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| 156 | avpriv_mjpeg_val_ac_luminance); |
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| 157 | size += put_huffman_table(s, 1, 1, avpriv_mjpeg_bits_ac_chrominance, |
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| 158 | avpriv_mjpeg_val_ac_chrominance); |
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| 159 | AV_WB16(ptr, size); |
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| 160 | } |
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| 161 | |||
| 162 | static void jpeg_put_comments(MpegEncContext *s) |
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| 163 | { |
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| 164 | PutBitContext *p = &s->pb; |
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| 165 | int size; |
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| 166 | uint8_t *ptr; |
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| 167 | |||
| 168 | if (s->avctx->sample_aspect_ratio.num /* && !lossless */) |
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| 169 | { |
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| 170 | /* JFIF header */ |
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| 171 | put_marker(p, APP0); |
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| 172 | put_bits(p, 16, 16); |
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| 173 | avpriv_put_string(p, "JFIF", 1); /* this puts the trailing zero-byte too */ |
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| 174 | put_bits(p, 16, 0x0102); /* v 1.02 */ |
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| 175 | put_bits(p, 8, 0); /* units type: 0 - aspect ratio */ |
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| 176 | put_bits(p, 16, s->avctx->sample_aspect_ratio.num); |
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| 177 | put_bits(p, 16, s->avctx->sample_aspect_ratio.den); |
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| 178 | put_bits(p, 8, 0); /* thumbnail width */ |
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| 179 | put_bits(p, 8, 0); /* thumbnail height */ |
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| 180 | } |
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| 181 | |||
| 182 | /* comment */ |
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| 183 | if(!(s->flags & CODEC_FLAG_BITEXACT)){ |
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| 184 | put_marker(p, COM); |
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| 185 | flush_put_bits(p); |
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| 186 | ptr = put_bits_ptr(p); |
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| 187 | put_bits(p, 16, 0); /* patched later */ |
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| 188 | avpriv_put_string(p, LIBAVCODEC_IDENT, 1); |
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| 189 | size = strlen(LIBAVCODEC_IDENT)+3; |
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| 190 | AV_WB16(ptr, size); |
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| 191 | } |
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| 192 | |||
| 193 | if( s->avctx->pix_fmt == AV_PIX_FMT_YUV420P |
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| 194 | ||s->avctx->pix_fmt == AV_PIX_FMT_YUV422P |
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| 195 | ||s->avctx->pix_fmt == AV_PIX_FMT_YUV444P){ |
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| 196 | put_marker(p, COM); |
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| 197 | flush_put_bits(p); |
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| 198 | ptr = put_bits_ptr(p); |
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| 199 | put_bits(p, 16, 0); /* patched later */ |
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| 200 | avpriv_put_string(p, "CS=ITU601", 1); |
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| 201 | size = strlen("CS=ITU601")+3; |
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| 202 | AV_WB16(ptr, size); |
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| 203 | } |
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| 204 | } |
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| 205 | |||
| 206 | void ff_mjpeg_encode_picture_header(MpegEncContext *s) |
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| 207 | { |
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| 208 | const int lossless= s->avctx->codec_id != AV_CODEC_ID_MJPEG; |
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| 209 | int i; |
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| 210 | |||
| 211 | put_marker(&s->pb, SOI); |
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| 212 | |||
| 213 | // hack for AMV mjpeg format |
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| 214 | if(s->avctx->codec_id == AV_CODEC_ID_AMV) goto end; |
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| 215 | |||
| 216 | jpeg_put_comments(s); |
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| 217 | |||
| 218 | jpeg_table_header(s); |
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| 219 | |||
| 220 | switch(s->avctx->codec_id){ |
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| 221 | case AV_CODEC_ID_MJPEG: put_marker(&s->pb, SOF0 ); break; |
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| 222 | case AV_CODEC_ID_LJPEG: put_marker(&s->pb, SOF3 ); break; |
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| 223 | default: av_assert0(0); |
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| 224 | } |
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| 225 | |||
| 226 | put_bits(&s->pb, 16, 17); |
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| 227 | if(lossless && (s->avctx->pix_fmt == AV_PIX_FMT_BGR0 |
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| 228 | || s->avctx->pix_fmt == AV_PIX_FMT_BGRA |
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| 229 | || s->avctx->pix_fmt == AV_PIX_FMT_BGR24)) |
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| 230 | put_bits(&s->pb, 8, 9); /* 9 bits/component RCT */ |
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| 231 | else |
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| 232 | put_bits(&s->pb, 8, 8); /* 8 bits/component */ |
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| 233 | put_bits(&s->pb, 16, s->height); |
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| 234 | put_bits(&s->pb, 16, s->width); |
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| 235 | put_bits(&s->pb, 8, 3); /* 3 components */ |
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| 236 | |||
| 237 | /* Y component */ |
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| 238 | put_bits(&s->pb, 8, 1); /* component number */ |
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| 239 | put_bits(&s->pb, 4, s->mjpeg_hsample[0]); /* H factor */ |
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| 240 | put_bits(&s->pb, 4, s->mjpeg_vsample[0]); /* V factor */ |
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| 241 | put_bits(&s->pb, 8, 0); /* select matrix */ |
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| 242 | |||
| 243 | /* Cb component */ |
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| 244 | put_bits(&s->pb, 8, 2); /* component number */ |
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| 245 | put_bits(&s->pb, 4, s->mjpeg_hsample[1]); /* H factor */ |
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| 246 | put_bits(&s->pb, 4, s->mjpeg_vsample[1]); /* V factor */ |
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| 247 | #ifdef TWOMATRIXES |
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| 248 | put_bits(&s->pb, 8, lossless ? 0 : 1); /* select matrix */ |
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| 249 | #else |
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| 250 | put_bits(&s->pb, 8, 0); /* select matrix */ |
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| 251 | #endif |
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| 252 | |||
| 253 | /* Cr component */ |
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| 254 | put_bits(&s->pb, 8, 3); /* component number */ |
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| 255 | put_bits(&s->pb, 4, s->mjpeg_hsample[2]); /* H factor */ |
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| 256 | put_bits(&s->pb, 4, s->mjpeg_vsample[2]); /* V factor */ |
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| 257 | #ifdef TWOMATRIXES |
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| 258 | put_bits(&s->pb, 8, lossless ? 0 : 1); /* select matrix */ |
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| 259 | #else |
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| 260 | put_bits(&s->pb, 8, 0); /* select matrix */ |
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| 261 | #endif |
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| 262 | |||
| 263 | /* scan header */ |
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| 264 | put_marker(&s->pb, SOS); |
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| 265 | put_bits(&s->pb, 16, 12); /* length */ |
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| 266 | put_bits(&s->pb, 8, 3); /* 3 components */ |
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| 267 | |||
| 268 | /* Y component */ |
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| 269 | put_bits(&s->pb, 8, 1); /* index */ |
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| 270 | put_bits(&s->pb, 4, 0); /* DC huffman table index */ |
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| 271 | put_bits(&s->pb, 4, 0); /* AC huffman table index */ |
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| 272 | |||
| 273 | /* Cb component */ |
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| 274 | put_bits(&s->pb, 8, 2); /* index */ |
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| 275 | put_bits(&s->pb, 4, 1); /* DC huffman table index */ |
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| 276 | put_bits(&s->pb, 4, lossless ? 0 : 1); /* AC huffman table index */ |
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| 277 | |||
| 278 | /* Cr component */ |
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| 279 | put_bits(&s->pb, 8, 3); /* index */ |
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| 280 | put_bits(&s->pb, 4, 1); /* DC huffman table index */ |
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| 281 | put_bits(&s->pb, 4, lossless ? 0 : 1); /* AC huffman table index */ |
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| 282 | |||
| 283 | put_bits(&s->pb, 8, lossless ? s->avctx->prediction_method+1 : 0); /* Ss (not used) */ |
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| 284 | |||
| 285 | switch(s->avctx->codec_id){ |
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| 286 | case AV_CODEC_ID_MJPEG: put_bits(&s->pb, 8, 63); break; /* Se (not used) */ |
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| 287 | case AV_CODEC_ID_LJPEG: put_bits(&s->pb, 8, 0); break; /* not used */ |
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| 288 | default: av_assert0(0); |
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| 289 | } |
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| 290 | |||
| 291 | put_bits(&s->pb, 8, 0); /* Ah/Al (not used) */ |
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| 292 | |||
| 293 | end: |
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| 294 | s->esc_pos = put_bits_count(&s->pb) >> 3; |
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| 295 | for(i=1; i |
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| 296 | s->thread_context[i]->esc_pos = 0; |
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| 297 | } |
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| 298 | |||
| 299 | static void escape_FF(MpegEncContext *s, int start) |
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| 300 | { |
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| 301 | int size= put_bits_count(&s->pb) - start*8; |
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| 302 | int i, ff_count; |
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| 303 | uint8_t *buf= s->pb.buf + start; |
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| 304 | int align= (-(size_t)(buf))&3; |
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| 305 | |||
| 306 | av_assert1((size&7) == 0); |
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| 307 | size >>= 3; |
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| 308 | |||
| 309 | ff_count=0; |
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| 310 | for(i=0; i |
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| 311 | if(buf[i]==0xFF) ff_count++; |
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| 312 | } |
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| 313 | for(; i |
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| 314 | int acc, v; |
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| 315 | |||
| 316 | v= *(uint32_t*)(&buf[i]); |
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| 317 | acc= (((v & (v>>4))&0x0F0F0F0F)+0x01010101)&0x10101010; |
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| 318 | v= *(uint32_t*)(&buf[i+4]); |
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| 319 | acc+=(((v & (v>>4))&0x0F0F0F0F)+0x01010101)&0x10101010; |
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| 320 | v= *(uint32_t*)(&buf[i+8]); |
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| 321 | acc+=(((v & (v>>4))&0x0F0F0F0F)+0x01010101)&0x10101010; |
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| 322 | v= *(uint32_t*)(&buf[i+12]); |
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| 323 | acc+=(((v & (v>>4))&0x0F0F0F0F)+0x01010101)&0x10101010; |
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| 324 | |||
| 325 | acc>>=4; |
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| 326 | acc+= (acc>>16); |
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| 327 | acc+= (acc>>8); |
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| 328 | ff_count+= acc&0xFF; |
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| 329 | } |
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| 330 | for(; i |
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| 331 | if(buf[i]==0xFF) ff_count++; |
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| 332 | } |
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| 333 | |||
| 334 | if(ff_count==0) return; |
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| 335 | |||
| 336 | flush_put_bits(&s->pb); |
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| 337 | skip_put_bytes(&s->pb, ff_count); |
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| 338 | |||
| 339 | for(i=size-1; ff_count; i--){ |
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| 340 | int v= buf[i]; |
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| 341 | |||
| 342 | if(v==0xFF){ |
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| 343 | buf[i+ff_count]= 0; |
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| 344 | ff_count--; |
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| 345 | } |
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| 346 | |||
| 347 | buf[i+ff_count]= v; |
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| 348 | } |
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| 349 | } |
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| 350 | |||
| 351 | void ff_mjpeg_encode_stuffing(MpegEncContext *s) |
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| 352 | { |
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| 353 | int length, i; |
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| 354 | PutBitContext *pbc = &s->pb; |
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| 355 | int mb_y = s->mb_y - !s->mb_x; |
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| 356 | length= (-put_bits_count(pbc))&7; |
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| 357 | if(length) put_bits(pbc, length, (1< |
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| 358 | |||
| 359 | flush_put_bits(&s->pb); |
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| 360 | escape_FF(s, s->esc_pos); |
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| 361 | |||
| 362 | if((s->avctx->active_thread_type & FF_THREAD_SLICE) && mb_y < s->mb_height) |
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| 363 | put_marker(pbc, RST0 + (mb_y&7)); |
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| 364 | s->esc_pos = put_bits_count(pbc) >> 3; |
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| 365 | |||
| 366 | for(i=0; i<3; i++) |
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| 367 | s->last_dc[i] = 128 << s->intra_dc_precision; |
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| 368 | } |
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| 369 | |||
| 370 | void ff_mjpeg_encode_picture_trailer(MpegEncContext *s) |
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| 371 | { |
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| 372 | |||
| 373 | av_assert1((s->header_bits&7)==0); |
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| 374 | |||
| 375 | |||
| 376 | put_marker(&s->pb, EOI); |
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| 377 | } |
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| 378 | |||
| 379 | void ff_mjpeg_encode_dc(MpegEncContext *s, int val, |
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| 380 | uint8_t *huff_size, uint16_t *huff_code) |
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| 381 | { |
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| 382 | int mant, nbits; |
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| 383 | |||
| 384 | if (val == 0) { |
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| 385 | put_bits(&s->pb, huff_size[0], huff_code[0]); |
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| 386 | } else { |
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| 387 | mant = val; |
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| 388 | if (val < 0) { |
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| 389 | val = -val; |
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| 390 | mant--; |
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| 391 | } |
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| 392 | |||
| 393 | nbits= av_log2_16bit(val) + 1; |
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| 394 | |||
| 395 | put_bits(&s->pb, huff_size[nbits], huff_code[nbits]); |
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| 396 | |||
| 397 | put_sbits(&s->pb, nbits, mant); |
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| 398 | } |
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| 399 | } |
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| 400 | |||
| 401 | static void encode_block(MpegEncContext *s, int16_t *block, int n) |
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| 402 | { |
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| 403 | int mant, nbits, code, i, j; |
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| 404 | int component, dc, run, last_index, val; |
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| 405 | MJpegContext *m = s->mjpeg_ctx; |
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| 406 | uint8_t *huff_size_ac; |
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| 407 | uint16_t *huff_code_ac; |
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| 408 | |||
| 409 | /* DC coef */ |
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| 410 | component = (n <= 3 ? 0 : (n&1) + 1); |
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| 411 | dc = block[0]; /* overflow is impossible */ |
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| 412 | val = dc - s->last_dc[component]; |
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| 413 | if (n < 4) { |
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| 414 | ff_mjpeg_encode_dc(s, val, m->huff_size_dc_luminance, m->huff_code_dc_luminance); |
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| 415 | huff_size_ac = m->huff_size_ac_luminance; |
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| 416 | huff_code_ac = m->huff_code_ac_luminance; |
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| 417 | } else { |
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| 418 | ff_mjpeg_encode_dc(s, val, m->huff_size_dc_chrominance, m->huff_code_dc_chrominance); |
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| 419 | huff_size_ac = m->huff_size_ac_chrominance; |
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| 420 | huff_code_ac = m->huff_code_ac_chrominance; |
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| 421 | } |
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| 422 | s->last_dc[component] = dc; |
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| 423 | |||
| 424 | /* AC coefs */ |
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| 425 | |||
| 426 | run = 0; |
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| 427 | last_index = s->block_last_index[n]; |
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| 428 | for(i=1;i<=last_index;i++) { |
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| 429 | j = s->intra_scantable.permutated[i]; |
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| 430 | val = block[j]; |
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| 431 | if (val == 0) { |
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| 432 | run++; |
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| 433 | } else { |
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| 434 | while (run >= 16) { |
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| 435 | put_bits(&s->pb, huff_size_ac[0xf0], huff_code_ac[0xf0]); |
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| 436 | run -= 16; |
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| 437 | } |
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| 438 | mant = val; |
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| 439 | if (val < 0) { |
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| 440 | val = -val; |
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| 441 | mant--; |
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| 442 | } |
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| 443 | |||
| 444 | nbits= av_log2(val) + 1; |
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| 445 | code = (run << 4) | nbits; |
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| 446 | |||
| 447 | put_bits(&s->pb, huff_size_ac[code], huff_code_ac[code]); |
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| 448 | |||
| 449 | put_sbits(&s->pb, nbits, mant); |
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| 450 | run = 0; |
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| 451 | } |
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| 452 | } |
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| 453 | |||
| 454 | /* output EOB only if not already 64 values */ |
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| 455 | if (last_index < 63 || run != 0) |
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| 456 | put_bits(&s->pb, huff_size_ac[0], huff_code_ac[0]); |
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| 457 | } |
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| 458 | |||
| 459 | void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[6][64]) |
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| 460 | { |
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| 461 | int i; |
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| 462 | if (s->chroma_format == CHROMA_444) { |
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| 463 | encode_block(s, block[0], 0); |
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| 464 | encode_block(s, block[2], 2); |
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| 465 | encode_block(s, block[4], 4); |
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| 466 | encode_block(s, block[8], 8); |
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| 467 | encode_block(s, block[5], 5); |
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| 468 | encode_block(s, block[9], 9); |
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| 469 | |||
| 470 | if (16*s->mb_x+8 < s->width) { |
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| 471 | encode_block(s, block[1], 1); |
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| 472 | encode_block(s, block[3], 3); |
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| 473 | encode_block(s, block[6], 6); |
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| 474 | encode_block(s, block[10], 10); |
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| 475 | encode_block(s, block[7], 7); |
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| 476 | encode_block(s, block[11], 11); |
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| 477 | } |
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| 478 | } else { |
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| 479 | for(i=0;i<5;i++) { |
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| 480 | encode_block(s, block[i], i); |
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| 481 | } |
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| 482 | if (s->chroma_format == CHROMA_420) { |
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| 483 | encode_block(s, block[5], 5); |
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| 484 | } else { |
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| 485 | encode_block(s, block[6], 6); |
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| 486 | encode_block(s, block[5], 5); |
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| 487 | encode_block(s, block[7], 7); |
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| 488 | } |
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| 489 | } |
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| 490 | |||
| 491 | s->i_tex_bits += get_bits_diff(s); |
||
| 492 | } |
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| 493 | |||
| 494 | // maximum over s->mjpeg_vsample[i] |
||
| 495 | #define V_MAX 2 |
||
| 496 | static int amv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, |
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| 497 | const AVFrame *pic_arg, int *got_packet) |
||
| 498 | |||
| 499 | { |
||
| 500 | MpegEncContext *s = avctx->priv_data; |
||
| 501 | AVFrame pic = *pic_arg; |
||
| 502 | int i; |
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| 503 | |||
| 504 | //CODEC_FLAG_EMU_EDGE have to be cleared |
||
| 505 | if(s->avctx->flags & CODEC_FLAG_EMU_EDGE) |
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| 506 | return -1; |
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| 507 | |||
| 508 | //picture should be flipped upside-down |
||
| 509 | for(i=0; i < 3; i++) { |
||
| 510 | pic.data[i] += (pic.linesize[i] * (s->mjpeg_vsample[i] * (8 * s->mb_height -((s->height/V_MAX)&7)) - 1 )); |
||
| 511 | pic.linesize[i] *= -1; |
||
| 512 | } |
||
| 513 | return ff_MPV_encode_picture(avctx, pkt, &pic, got_packet); |
||
| 514 | } |
||
| 515 | |||
| 516 | #if CONFIG_MJPEG_ENCODER |
||
| 517 | AVCodec ff_mjpeg_encoder = { |
||
| 518 | .name = "mjpeg", |
||
| 519 | .long_name = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"), |
||
| 520 | .type = AVMEDIA_TYPE_VIDEO, |
||
| 521 | .id = AV_CODEC_ID_MJPEG, |
||
| 522 | .priv_data_size = sizeof(MpegEncContext), |
||
| 523 | .init = ff_MPV_encode_init, |
||
| 524 | .encode2 = ff_MPV_encode_picture, |
||
| 525 | .close = ff_MPV_encode_end, |
||
| 526 | .capabilities = CODEC_CAP_SLICE_THREADS | CODEC_CAP_FRAME_THREADS | CODEC_CAP_INTRA_ONLY, |
||
| 527 | .pix_fmts = (const enum AVPixelFormat[]){ |
||
| 528 | AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_NONE |
||
| 529 | }, |
||
| 530 | }; |
||
| 531 | #endif |
||
| 532 | #if CONFIG_AMV_ENCODER |
||
| 533 | AVCodec ff_amv_encoder = { |
||
| 534 | .name = "amv", |
||
| 535 | .long_name = NULL_IF_CONFIG_SMALL("AMV Video"), |
||
| 536 | .type = AVMEDIA_TYPE_VIDEO, |
||
| 537 | .id = AV_CODEC_ID_AMV, |
||
| 538 | .priv_data_size = sizeof(MpegEncContext), |
||
| 539 | .init = ff_MPV_encode_init, |
||
| 540 | .encode2 = amv_encode_picture, |
||
| 541 | .close = ff_MPV_encode_end, |
||
| 542 | .pix_fmts = (const enum AVPixelFormat[]){ |
||
| 543 | AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_NONE |
||
| 544 | }, |
||
| 545 | }; |
||
| 546 | #endif |