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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * PAM image format |
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| 3 | * Copyright (c) 2002, 2003 Fabrice Bellard |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | #include "avcodec.h" |
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| 23 | #include "internal.h" |
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| 24 | #include "pnm.h" |
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| 25 | |||
| 26 | |||
| 27 | static int pam_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
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| 28 | const AVFrame *p, int *got_packet) |
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| 29 | { |
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| 30 | PNMContext *s = avctx->priv_data; |
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| 31 | int i, h, w, n, linesize, depth, maxval, ret; |
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| 32 | const char *tuple_type; |
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| 33 | uint8_t *ptr; |
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| 34 | |||
| 35 | h = avctx->height; |
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| 36 | w = avctx->width; |
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| 37 | switch (avctx->pix_fmt) { |
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| 38 | case AV_PIX_FMT_MONOBLACK: |
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| 39 | n = w; |
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| 40 | depth = 1; |
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| 41 | maxval = 1; |
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| 42 | tuple_type = "BLACKANDWHITE"; |
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| 43 | break; |
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| 44 | case AV_PIX_FMT_GRAY8: |
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| 45 | n = w; |
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| 46 | depth = 1; |
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| 47 | maxval = 255; |
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| 48 | tuple_type = "GRAYSCALE"; |
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| 49 | break; |
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| 50 | case AV_PIX_FMT_GRAY16BE: |
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| 51 | n = w * 2; |
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| 52 | depth = 1; |
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| 53 | maxval = 0xFFFF; |
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| 54 | tuple_type = "GRAYSCALE"; |
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| 55 | break; |
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| 56 | case AV_PIX_FMT_GRAY8A: |
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| 57 | n = w * 2; |
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| 58 | depth = 2; |
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| 59 | maxval = 255; |
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| 60 | tuple_type = "GRAYSCALE_ALPHA"; |
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| 61 | break; |
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| 62 | case AV_PIX_FMT_RGB24: |
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| 63 | n = w * 3; |
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| 64 | depth = 3; |
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| 65 | maxval = 255; |
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| 66 | tuple_type = "RGB"; |
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| 67 | break; |
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| 68 | case AV_PIX_FMT_RGBA: |
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| 69 | n = w * 4; |
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| 70 | depth = 4; |
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| 71 | maxval = 255; |
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| 72 | tuple_type = "RGB_ALPHA"; |
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| 73 | break; |
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| 74 | case AV_PIX_FMT_RGB48BE: |
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| 75 | n = w * 6; |
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| 76 | depth = 3; |
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| 77 | maxval = 0xFFFF; |
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| 78 | tuple_type = "RGB"; |
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| 79 | break; |
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| 80 | case AV_PIX_FMT_RGBA64BE: |
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| 81 | n = w * 8; |
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| 82 | depth = 4; |
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| 83 | maxval = 0xFFFF; |
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| 84 | tuple_type = "RGB_ALPHA"; |
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| 85 | break; |
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| 86 | default: |
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| 87 | return -1; |
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| 88 | } |
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| 89 | |||
| 90 | if ((ret = ff_alloc_packet2(avctx, pkt, n*h + 200)) < 0) |
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| 91 | return ret; |
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| 92 | |||
| 93 | s->bytestream_start = |
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| 94 | s->bytestream = pkt->data; |
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| 95 | s->bytestream_end = pkt->data + pkt->size; |
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| 96 | |||
| 97 | snprintf(s->bytestream, s->bytestream_end - s->bytestream, |
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| 98 | "P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLTYPE %s\nENDHDR\n", |
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| 99 | w, h, depth, maxval, tuple_type); |
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| 100 | s->bytestream += strlen(s->bytestream); |
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| 101 | |||
| 102 | ptr = p->data[0]; |
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| 103 | linesize = p->linesize[0]; |
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| 104 | |||
| 105 | if (avctx->pix_fmt == AV_PIX_FMT_MONOBLACK){ |
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| 106 | int j; |
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| 107 | for (i = 0; i < h; i++) { |
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| 108 | for (j = 0; j < w; j++) |
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| 109 | *s->bytestream++ = ptr[j >> 3] >> (7 - j & 7) & 1; |
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| 110 | ptr += linesize; |
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| 111 | } |
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| 112 | } else { |
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| 113 | for (i = 0; i < h; i++) { |
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| 114 | memcpy(s->bytestream, ptr, n); |
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| 115 | s->bytestream += n; |
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| 116 | ptr += linesize; |
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| 117 | } |
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| 118 | } |
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| 119 | |||
| 120 | pkt->size = s->bytestream - s->bytestream_start; |
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| 121 | pkt->flags |= AV_PKT_FLAG_KEY; |
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| 122 | *got_packet = 1; |
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| 123 | return 0; |
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| 124 | } |
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| 125 | |||
| 126 | |||
| 127 | AVCodec ff_pam_encoder = { |
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| 128 | .name = "pam", |
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| 129 | .long_name = NULL_IF_CONFIG_SMALL("PAM (Portable AnyMap) image"), |
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| 130 | .type = AVMEDIA_TYPE_VIDEO, |
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| 131 | .id = AV_CODEC_ID_PAM, |
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| 132 | .priv_data_size = sizeof(PNMContext), |
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| 133 | .encode2 = pam_encode_frame, |
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| 134 | .pix_fmts = (const enum AVPixelFormat[]){ |
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| 135 | AV_PIX_FMT_RGB24, AV_PIX_FMT_RGBA, AV_PIX_FMT_RGB48BE, AV_PIX_FMT_RGBA64BE, AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY8A, AV_PIX_FMT_GRAY16BE, AV_PIX_FMT_MONOBLACK, AV_PIX_FMT_NONE |
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| 136 | }, |
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| 137 | }; |