| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * WBMP (Wireless Application Protocol Bitmap) image | ||
| 3 | * | ||
| 4 | * This file is part of FFmpeg. | ||
| 5 | * | ||
| 6 | * FFmpeg is free software; you can redistribute it and/or | ||
| 7 | * modify it under the terms of the GNU Lesser General Public | ||
| 8 | * License as published by the Free Software Foundation; either | ||
| 9 | * version 2.1 of the License, or (at your option) any later version. | ||
| 10 | * | ||
| 11 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 14 | * Lesser General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU Lesser General Public | ||
| 17 | * License along with FFmpeg; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | #include "avcodec.h" | ||
| 22 | #include "bytestream.h" | ||
| 23 | #include "codec_internal.h" | ||
| 24 | #include "encode.h" | ||
| 25 | |||
| 26 | 39 | static void putv(uint8_t ** bufp, unsigned int v) | |
| 27 | { | ||
| 28 | 39 | unsigned int vv = 0; | |
| 29 | 39 | int n = 0; | |
| 30 | |||
| 31 |
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91 | while (vv != v) |
| 32 | 52 | vv += v & (0x7F << 7 * n++); | |
| 33 | |||
| 34 |
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65 | while (--n > 0) |
| 35 | 26 | bytestream_put_byte(bufp, 0x80 | (v & (0x7F << 7 * n)) >> 7 * n); | |
| 36 | |||
| 37 | 39 | bytestream_put_byte(bufp, v & 0x7F); | |
| 38 | 39 | } | |
| 39 | |||
| 40 | 13 | static void writebits(uint8_t ** bufp, const uint8_t * src, int width, int height, int linesize) | |
| 41 | { | ||
| 42 | 13 | int wpad = (width + 7) / 8; | |
| 43 |
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3757 | for (int j = 0; j < height; j++) { |
| 44 | 3744 | memcpy(*bufp, src, wpad); | |
| 45 | 3744 | *bufp += wpad; | |
| 46 | 3744 | src += linesize; | |
| 47 | } | ||
| 48 | 13 | } | |
| 49 | |||
| 50 | 13 | static int wbmp_encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
| 51 | const AVFrame *frame, int *got_packet) | ||
| 52 | { | ||
| 53 | 13 | int64_t size = avctx->height * ((avctx->width + 7) / 8) + 32; | |
| 54 | uint8_t *buf; | ||
| 55 | int ret; | ||
| 56 | |||
| 57 |
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13 | if ((ret = ff_get_encode_buffer(avctx, pkt, size, 0)) < 0) |
| 58 | ✗ | return ret; | |
| 59 | |||
| 60 | 13 | buf = pkt->data; | |
| 61 | |||
| 62 | 13 | putv(&buf, 0); | |
| 63 | 13 | bytestream_put_byte(&buf, 0); | |
| 64 | 13 | putv(&buf, avctx->width); | |
| 65 | 13 | putv(&buf, avctx->height); | |
| 66 | |||
| 67 |
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13 | if (frame->linesize[0] == (avctx->width + 7) / 8) |
| 68 | ✗ | bytestream_put_buffer(&buf, frame->data[0], avctx->height * ((avctx->width + 7) / 8)); | |
| 69 | else | ||
| 70 | 13 | writebits(&buf, frame->data[0], avctx->width, avctx->height, frame->linesize[0]); | |
| 71 | |||
| 72 | 13 | av_shrink_packet(pkt, buf - pkt->data); | |
| 73 | |||
| 74 | 13 | *got_packet = 1; | |
| 75 | 13 | return 0; | |
| 76 | } | ||
| 77 | |||
| 78 | const FFCodec ff_wbmp_encoder = { | ||
| 79 | .p.name = "wbmp", | ||
| 80 | CODEC_LONG_NAME("WBMP (Wireless Application Protocol Bitmap) image"), | ||
| 81 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 82 | .p.id = AV_CODEC_ID_WBMP, | ||
| 83 | .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS | | ||
| 84 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, | ||
| 85 | FF_CODEC_ENCODE_CB(wbmp_encode_frame), | ||
| 86 | .p.pix_fmts = (const enum AVPixelFormat[]){ | ||
| 87 | AV_PIX_FMT_MONOBLACK, | ||
| 88 | AV_PIX_FMT_NONE | ||
| 89 | }, | ||
| 90 | }; | ||
| 91 |