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Diffstat (limited to 'contrib/ffmpeg/libavcodec/nuv.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/nuv.c | 275 |
1 files changed, 0 insertions, 275 deletions
diff --git a/contrib/ffmpeg/libavcodec/nuv.c b/contrib/ffmpeg/libavcodec/nuv.c deleted file mode 100644 index 6193806fa..000000000 --- a/contrib/ffmpeg/libavcodec/nuv.c +++ /dev/null @@ -1,275 +0,0 @@ -/* - * NuppelVideo decoder - * Copyright (c) 2006 Reimar Doeffinger - * - * 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 <stdio.h> -#include <stdlib.h> - -#include "avcodec.h" - -#include "bswap.h" -#include "dsputil.h" -#include "lzo.h" -#include "rtjpeg.h" - -typedef struct { - AVFrame pic; - int codec_frameheader; - int quality; - int width, height; - unsigned int decomp_size; - unsigned char* decomp_buf; - uint32_t lq[64], cq[64]; - RTJpegContext rtj; - DSPContext dsp; -} NuvContext; - -static const uint8_t fallback_lquant[] = { - 16, 11, 10, 16, 24, 40, 51, 61, - 12, 12, 14, 19, 26, 58, 60, 55, - 14, 13, 16, 24, 40, 57, 69, 56, - 14, 17, 22, 29, 51, 87, 80, 62, - 18, 22, 37, 56, 68, 109, 103, 77, - 24, 35, 55, 64, 81, 104, 113, 92, - 49, 64, 78, 87, 103, 121, 120, 101, - 72, 92, 95, 98, 112, 100, 103, 99 -}; - -static const uint8_t fallback_cquant[] = { - 17, 18, 24, 47, 99, 99, 99, 99, - 18, 21, 26, 66, 99, 99, 99, 99, - 24, 26, 56, 99, 99, 99, 99, 99, - 47, 66, 99, 99, 99, 99, 99, 99, - 99, 99, 99, 99, 99, 99, 99, 99, - 99, 99, 99, 99, 99, 99, 99, 99, - 99, 99, 99, 99, 99, 99, 99, 99, - 99, 99, 99, 99, 99, 99, 99, 99 -}; - -/** - * \brief copy frame data from buffer to AVFrame, handling stride. - * \param f destination AVFrame - * \param src source buffer, does not use any line-stride - * \param width width of the video frame - * \param height height of the video frame - */ -static void copy_frame(AVFrame *f, const uint8_t *src, - int width, int height) { - AVPicture pic; - avpicture_fill(&pic, src, PIX_FMT_YUV420P, width, height); - av_picture_copy((AVPicture *)f, &pic, PIX_FMT_YUV420P, width, height); -} - -/** - * \brief extract quantization tables from codec data into our context - */ -static int get_quant(AVCodecContext *avctx, NuvContext *c, - const uint8_t *buf, int size) { - int i; - if (size < 2 * 64 * 4) { - av_log(avctx, AV_LOG_ERROR, "insufficient rtjpeg quant data\n"); - return -1; - } - for (i = 0; i < 64; i++, buf += 4) - c->lq[i] = AV_RL32(buf); - for (i = 0; i < 64; i++, buf += 4) - c->cq[i] = AV_RL32(buf); - return 0; -} - -/** - * \brief set quantization tables from a quality value - */ -static void get_quant_quality(NuvContext *c, int quality) { - int i; - quality = FFMAX(quality, 1); - for (i = 0; i < 64; i++) { - c->lq[i] = (fallback_lquant[i] << 7) / quality; - c->cq[i] = (fallback_cquant[i] << 7) / quality; - } -} - -static int codec_reinit(AVCodecContext *avctx, int width, int height, int quality) { - NuvContext *c = avctx->priv_data; - width = (width + 1) & ~1; - height = (height + 1) & ~1; - if (quality >= 0) - get_quant_quality(c, quality); - if (width != c->width || height != c->height) { - if (avcodec_check_dimensions(avctx, height, width) < 0) - return 0; - avctx->width = c->width = width; - avctx->height = c->height = height; - c->decomp_size = c->height * c->width * 3 / 2; - c->decomp_buf = av_realloc(c->decomp_buf, c->decomp_size + LZO_OUTPUT_PADDING); - if (!c->decomp_buf) { - av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n"); - return 0; - } - rtjpeg_decode_init(&c->rtj, &c->dsp, c->width, c->height, c->lq, c->cq); - } else if (quality != c->quality) - rtjpeg_decode_init(&c->rtj, &c->dsp, c->width, c->height, c->lq, c->cq); - return 1; -} - -static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, - const uint8_t *buf, int buf_size) { - NuvContext *c = avctx->priv_data; - AVFrame *picture = data; - int orig_size = buf_size; - enum {NUV_UNCOMPRESSED = '0', NUV_RTJPEG = '1', - NUV_RTJPEG_IN_LZO = '2', NUV_LZO = '3', - NUV_BLACK = 'N', NUV_COPY_LAST = 'L'} comptype; - - if (buf_size < 12) { - av_log(avctx, AV_LOG_ERROR, "coded frame too small\n"); - return -1; - } - - // codec data (rtjpeg quant tables) - if (buf[0] == 'D' && buf[1] == 'R') { - int ret; - // skip rest of the frameheader. - buf = &buf[12]; - buf_size -= 12; - ret = get_quant(avctx, c, buf, buf_size); - if (ret < 0) - return ret; - rtjpeg_decode_init(&c->rtj, &c->dsp, c->width, c->height, c->lq, c->cq); - return orig_size; - } - - if (buf[0] != 'V' || buf_size < 12) { - av_log(avctx, AV_LOG_ERROR, "not a nuv video frame\n"); - return -1; - } - comptype = buf[1]; - // skip rest of the frameheader. - buf = &buf[12]; - buf_size -= 12; - if (comptype == NUV_RTJPEG_IN_LZO || comptype == NUV_LZO) { - int outlen = c->decomp_size, inlen = buf_size; - if (lzo1x_decode(c->decomp_buf, &outlen, buf, &inlen)) - av_log(avctx, AV_LOG_ERROR, "error during lzo decompression\n"); - buf = c->decomp_buf; - buf_size = c->decomp_size; - } - if (c->codec_frameheader) { - int w, h, q; - if (buf_size < 12) { - av_log(avctx, AV_LOG_ERROR, "invalid nuv video frame\n"); - return -1; - } - w = AV_RL16(&buf[6]); - h = AV_RL16(&buf[8]); - q = buf[10]; - if (!codec_reinit(avctx, w, h, q)) - return -1; - buf = &buf[12]; - buf_size -= 12; - } - - if (c->pic.data[0]) - avctx->release_buffer(avctx, &c->pic); - c->pic.reference = 1; - c->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_READABLE | - FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE; - if (avctx->get_buffer(avctx, &c->pic) < 0) { - av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); - return -1; - } - - c->pic.pict_type = FF_I_TYPE; - c->pic.key_frame = 1; - // decompress/copy/whatever data - switch (comptype) { - case NUV_LZO: - case NUV_UNCOMPRESSED: { - int height = c->height; - if (buf_size < c->width * height * 3 / 2) { - av_log(avctx, AV_LOG_ERROR, "uncompressed frame too short\n"); - height = buf_size / c->width / 3 * 2; - } - copy_frame(&c->pic, buf, c->width, height); - break; - } - case NUV_RTJPEG_IN_LZO: - case NUV_RTJPEG: { - rtjpeg_decode_frame_yuv420(&c->rtj, &c->pic, buf, buf_size); - break; - } - case NUV_BLACK: { - memset(c->pic.data[0], 0, c->width * c->height); - memset(c->pic.data[1], 128, c->width * c->height / 4); - memset(c->pic.data[2], 128, c->width * c->height / 4); - break; - } - case NUV_COPY_LAST: { - c->pic.pict_type = FF_P_TYPE; - c->pic.key_frame = 0; - /* nothing more to do here */ - break; - } - default: - av_log(avctx, AV_LOG_ERROR, "unknown compression\n"); - return -1; - } - - *picture = c->pic; - *data_size = sizeof(AVFrame); - return orig_size; -} - -static int decode_init(AVCodecContext *avctx) { - NuvContext *c = avctx->priv_data; - avctx->pix_fmt = PIX_FMT_YUV420P; - c->pic.data[0] = NULL; - c->decomp_buf = NULL; - c->quality = -1; - c->width = 0; - c->height = 0; - c->codec_frameheader = avctx->codec_tag == MKTAG('R', 'J', 'P', 'G'); - if (avctx->extradata_size) - get_quant(avctx, c, avctx->extradata, avctx->extradata_size); - dsputil_init(&c->dsp, avctx); - if (!codec_reinit(avctx, avctx->width, avctx->height, -1)) - return 1; - return 0; -} - -static int decode_end(AVCodecContext *avctx) { - NuvContext *c = avctx->priv_data; - av_freep(&c->decomp_buf); - if (c->pic.data[0]) - avctx->release_buffer(avctx, &c->pic); - return 0; -} - -AVCodec nuv_decoder = { - "nuv", - CODEC_TYPE_VIDEO, - CODEC_ID_NUV, - sizeof(NuvContext), - decode_init, - NULL, - decode_end, - decode_frame, - CODEC_CAP_DR1, -}; 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