diff options
Diffstat (limited to 'libavcodec/targaenc.c')
| -rw-r--r-- | libavcodec/targaenc.c | 48 |
1 files changed, 35 insertions, 13 deletions
diff --git a/libavcodec/targaenc.c b/libavcodec/targaenc.c index e13545f..b2c679d 100644 --- a/libavcodec/targaenc.c +++ b/libavcodec/targaenc.c @@ -2,20 +2,20 @@ * Targa (.tga) image encoder * Copyright (c) 2007 Bobby Bingham * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -81,7 +81,7 @@ static int targa_encode_normal(uint8_t *outbuf, const AVFrame *pic, int bpp, int static int targa_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *p, int *got_packet) { - int bpp, picsize, datasize = -1, ret; + int bpp, picsize, datasize = -1, ret, i; uint8_t *out; if(avctx->width > 0xffff || avctx->height > 0xffff) { @@ -89,10 +89,8 @@ static int targa_encode_frame(AVCodecContext *avctx, AVPacket *pkt, return AVERROR(EINVAL); } picsize = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height); - if ((ret = ff_alloc_packet(pkt, picsize + 45)) < 0) { - av_log(avctx, AV_LOG_ERROR, "encoded frame too large\n"); + if ((ret = ff_alloc_packet2(avctx, pkt, picsize + 45)) < 0) return ret; - } /* zero out the header and only set applicable fields */ memset(pkt->data, 0, 12); @@ -101,13 +99,39 @@ static int targa_encode_frame(AVCodecContext *avctx, AVPacket *pkt, /* image descriptor byte: origin is always top-left, bits 0-3 specify alpha */ pkt->data[17] = 0x20 | (avctx->pix_fmt == AV_PIX_FMT_BGRA ? 8 : 0); + out = pkt->data + 18; /* skip past the header we write */ + + avctx->bits_per_coded_sample = av_get_bits_per_pixel(av_pix_fmt_desc_get(avctx->pix_fmt)); switch(avctx->pix_fmt) { + case AV_PIX_FMT_PAL8: { + int pal_bpp = 24; /* Only write 32bit palette if there is transparency information */ + for (i = 0; i < 256; i++) + if (AV_RN32(p->data[1] + 4 * i) >> 24 != 0xFF) { + pal_bpp = 32; + break; + } + pkt->data[1] = 1; /* palette present */ + pkt->data[2] = TGA_PAL; /* uncompressed palettised image */ + pkt->data[6] = 1; /* palette contains 256 entries */ + pkt->data[7] = pal_bpp; /* palette contains pal_bpp bit entries */ + pkt->data[16] = 8; /* bpp */ + for (i = 0; i < 256; i++) + if (pal_bpp == 32) { + AV_WL32(pkt->data + 18 + 4 * i, *(uint32_t *)(p->data[1] + i * 4)); + } else { + AV_WL24(pkt->data + 18 + 3 * i, *(uint32_t *)(p->data[1] + i * 4)); + } + out += 32 * pal_bpp; /* skip past the palette we just output */ + break; + } case AV_PIX_FMT_GRAY8: pkt->data[2] = TGA_BW; /* uncompressed grayscale image */ + avctx->bits_per_coded_sample = 0x28; pkt->data[16] = 8; /* bpp */ break; case AV_PIX_FMT_RGB555LE: - pkt->data[2] = TGA_RGB; /* uncompresses true-color image */ + pkt->data[2] = TGA_RGB; /* uncompressed true-color image */ + avctx->bits_per_coded_sample = pkt->data[16] = 16; /* bpp */ break; case AV_PIX_FMT_BGR24: @@ -125,15 +149,13 @@ static int targa_encode_frame(AVCodecContext *avctx, AVPacket *pkt, } bpp = pkt->data[16] >> 3; - out = pkt->data + 18; /* skip past the header we just output */ - /* try RLE compression */ if (avctx->coder_type != FF_CODER_TYPE_RAW) datasize = targa_encode_rle(out, picsize, p, bpp, avctx->width, avctx->height); /* if that worked well, mark the picture as RLE compressed */ if(datasize >= 0) - pkt->data[2] |= 8; + pkt->data[2] |= TGA_RLE; /* if RLE didn't make it smaller, go back to no compression */ else datasize = targa_encode_normal(out, p, bpp, avctx->width, avctx->height); @@ -172,7 +194,7 @@ AVCodec ff_targa_encoder = { .init = targa_encode_init, .encode2 = targa_encode_frame, .pix_fmts = (const enum AVPixelFormat[]){ - AV_PIX_FMT_BGR24, AV_PIX_FMT_BGRA, AV_PIX_FMT_RGB555LE, AV_PIX_FMT_GRAY8, + AV_PIX_FMT_BGR24, AV_PIX_FMT_BGRA, AV_PIX_FMT_RGB555LE, AV_PIX_FMT_GRAY8, AV_PIX_FMT_PAL8, AV_PIX_FMT_NONE }, .long_name= NULL_IF_CONFIG_SMALL("Truevision Targa image"), |
