| 0,0 → 1,137 |
|---|
| /* |
| * PAM image format |
| * Copyright (c) 2002, 2003 Fabrice Bellard |
| * |
| * 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 "avcodec.h" |
| #include "internal.h" |
| #include "pnm.h" |
| |
| |
| static int pam_encode_frame(AVCodecContext *avctx, AVPacket *pkt, |
| const AVFrame *p, int *got_packet) |
| { |
| PNMContext *s = avctx->priv_data; |
| int i, h, w, n, linesize, depth, maxval, ret; |
| const char *tuple_type; |
| uint8_t *ptr; |
| |
| h = avctx->height; |
| w = avctx->width; |
| switch (avctx->pix_fmt) { |
| case AV_PIX_FMT_MONOBLACK: |
| n = w; |
| depth = 1; |
| maxval = 1; |
| tuple_type = "BLACKANDWHITE"; |
| break; |
| case AV_PIX_FMT_GRAY8: |
| n = w; |
| depth = 1; |
| maxval = 255; |
| tuple_type = "GRAYSCALE"; |
| break; |
| case AV_PIX_FMT_GRAY16BE: |
| n = w * 2; |
| depth = 1; |
| maxval = 0xFFFF; |
| tuple_type = "GRAYSCALE"; |
| break; |
| case AV_PIX_FMT_GRAY8A: |
| n = w * 2; |
| depth = 2; |
| maxval = 255; |
| tuple_type = "GRAYSCALE_ALPHA"; |
| break; |
| case AV_PIX_FMT_RGB24: |
| n = w * 3; |
| depth = 3; |
| maxval = 255; |
| tuple_type = "RGB"; |
| break; |
| case AV_PIX_FMT_RGBA: |
| n = w * 4; |
| depth = 4; |
| maxval = 255; |
| tuple_type = "RGB_ALPHA"; |
| break; |
| case AV_PIX_FMT_RGB48BE: |
| n = w * 6; |
| depth = 3; |
| maxval = 0xFFFF; |
| tuple_type = "RGB"; |
| break; |
| case AV_PIX_FMT_RGBA64BE: |
| n = w * 8; |
| depth = 4; |
| maxval = 0xFFFF; |
| tuple_type = "RGB_ALPHA"; |
| break; |
| default: |
| return -1; |
| } |
| |
| if ((ret = ff_alloc_packet2(avctx, pkt, n*h + 200)) < 0) |
| return ret; |
| |
| s->bytestream_start = |
| s->bytestream = pkt->data; |
| s->bytestream_end = pkt->data + pkt->size; |
| |
| snprintf(s->bytestream, s->bytestream_end - s->bytestream, |
| "P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLTYPE %s\nENDHDR\n", |
| w, h, depth, maxval, tuple_type); |
| s->bytestream += strlen(s->bytestream); |
| |
| ptr = p->data[0]; |
| linesize = p->linesize[0]; |
| |
| if (avctx->pix_fmt == AV_PIX_FMT_MONOBLACK){ |
| int j; |
| for (i = 0; i < h; i++) { |
| for (j = 0; j < w; j++) |
| *s->bytestream++ = ptr[j >> 3] >> (7 - j & 7) & 1; |
| ptr += linesize; |
| } |
| } else { |
| for (i = 0; i < h; i++) { |
| memcpy(s->bytestream, ptr, n); |
| s->bytestream += n; |
| ptr += linesize; |
| } |
| } |
| |
| pkt->size = s->bytestream - s->bytestream_start; |
| pkt->flags |= AV_PKT_FLAG_KEY; |
| *got_packet = 1; |
| return 0; |
| } |
| |
| |
| AVCodec ff_pam_encoder = { |
| .name = "pam", |
| .long_name = NULL_IF_CONFIG_SMALL("PAM (Portable AnyMap) image"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_PAM, |
| .priv_data_size = sizeof(PNMContext), |
| .encode2 = pam_encode_frame, |
| .pix_fmts = (const enum AVPixelFormat[]){ |
| 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 |
| }, |
| }; |