diff options
Diffstat (limited to 'libavcodec/sgienc.c')
| -rw-r--r-- | libavcodec/sgienc.c | 70 |
1 files changed, 57 insertions, 13 deletions
diff --git a/libavcodec/sgienc.c b/libavcodec/sgienc.c index 49440fa..77b471b 100644 --- a/libavcodec/sgienc.c +++ b/libavcodec/sgienc.c @@ -2,20 +2,20 @@ * SGI image encoder * Todd Kirby <doubleshot@pacbell.net> * - * 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 */ @@ -36,6 +36,11 @@ static av_cold int encode_init(AVCodecContext *avctx) { SgiContext *s = avctx->priv_data; + if (avctx->width > 65535 || avctx->height > 65535) { + av_log(avctx, AV_LOG_ERROR, "SGI does not support resolutions above 65535x65535\n"); + return -1; + } + avcodec_get_frame_defaults(&s->picture); avctx->coded_frame = &s->picture; @@ -49,7 +54,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, AVFrame * const p = &s->picture; uint8_t *offsettab, *lengthtab, *in_buf, *encode_buf, *buf; int x, y, z, length, tablesize, ret; - unsigned int width, height, depth, dimension; + unsigned int width, height, depth, dimension, bytes_per_channel, pixmax, put_be; unsigned char *end_buf; *p = *frame; @@ -58,6 +63,9 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, width = avctx->width; height = avctx->height; + bytes_per_channel = 1; + pixmax = 0xFF; + put_be = HAVE_BIGENDIAN; switch (avctx->pix_fmt) { case PIX_FMT_GRAY8: @@ -72,6 +80,33 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, dimension = SGI_MULTI_CHAN; depth = SGI_RGBA; break; + case PIX_FMT_GRAY16LE: + put_be = !HAVE_BIGENDIAN; + case PIX_FMT_GRAY16BE: + avctx->coder_type = FF_CODER_TYPE_RAW; + bytes_per_channel = 2; + pixmax = 0xFFFF; + dimension = SGI_SINGLE_CHAN; + depth = SGI_GRAYSCALE; + break; + case PIX_FMT_RGB48LE: + put_be = !HAVE_BIGENDIAN; + case PIX_FMT_RGB48BE: + avctx->coder_type = FF_CODER_TYPE_RAW; + bytes_per_channel = 2; + pixmax = 0xFFFF; + dimension = SGI_MULTI_CHAN; + depth = SGI_RGB; + break; + case PIX_FMT_RGBA64LE: + put_be = !HAVE_BIGENDIAN; + case PIX_FMT_RGBA64BE: + avctx->coder_type = FF_CODER_TYPE_RAW; + bytes_per_channel = 2; + pixmax = 0xFFFF; + dimension = SGI_MULTI_CHAN; + depth = SGI_RGBA; + break; default: return AVERROR_INVALIDDATA; } @@ -83,25 +118,22 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, else // assume ff_rl_encode() produces at most 2x size of input length += tablesize * 2 + depth * height * (2 * width + 1); - if ((ret = ff_alloc_packet(pkt, length)) < 0) { - av_log(avctx, AV_LOG_ERROR, "Error getting output packet of size %d.\n", length); + if ((ret = ff_alloc_packet2(avctx, pkt, bytes_per_channel * length)) < 0) return ret; - } buf = pkt->data; end_buf = pkt->data + pkt->size; /* Encode header. */ bytestream_put_be16(&buf, SGI_MAGIC); bytestream_put_byte(&buf, avctx->coder_type != FF_CODER_TYPE_RAW); /* RLE 1 - VERBATIM 0*/ - bytestream_put_byte(&buf, 1); /* bytes_per_channel */ + bytestream_put_byte(&buf, bytes_per_channel); bytestream_put_be16(&buf, dimension); bytestream_put_be16(&buf, width); bytestream_put_be16(&buf, height); bytestream_put_be16(&buf, depth); - /* The rest are constant in this implementation. */ bytestream_put_be32(&buf, 0L); /* pixmin */ - bytestream_put_be32(&buf, 255L); /* pixmax */ + bytestream_put_be32(&buf, pixmax); bytestream_put_be32(&buf, 0L); /* dummy */ /* name */ @@ -151,11 +183,19 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, av_free(encode_buf); } else { for (z = 0; z < depth; z++) { - in_buf = p->data[0] + p->linesize[0] * (height - 1) + z; + in_buf = p->data[0] + p->linesize[0] * (height - 1) + z * bytes_per_channel; for (y = 0; y < height; y++) { for (x = 0; x < width * depth; x += depth) + if (bytes_per_channel == 1) { bytestream_put_byte(&buf, in_buf[x]); + } else { + if (put_be) { + bytestream_put_be16(&buf, ((uint16_t *)in_buf)[x]); + } else { + bytestream_put_le16(&buf, ((uint16_t *)in_buf)[x]); + } + } in_buf -= p->linesize[0]; } @@ -178,7 +218,11 @@ AVCodec ff_sgi_encoder = { .init = encode_init, .encode2 = encode_frame, .pix_fmts = (const enum PixelFormat[]){ - PIX_FMT_RGB24, PIX_FMT_RGBA, PIX_FMT_GRAY8, PIX_FMT_NONE + PIX_FMT_RGB24, PIX_FMT_RGBA, + PIX_FMT_RGB48LE, PIX_FMT_RGB48BE, + PIX_FMT_RGBA64LE, PIX_FMT_RGBA64BE, + PIX_FMT_GRAY16LE, PIX_FMT_GRAY16BE, + PIX_FMT_GRAY8, PIX_FMT_NONE }, .long_name = NULL_IF_CONFIG_SMALL("SGI image"), }; |
