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Diffstat (limited to 'src/libffmpeg/libavcodec/nuv.c')
-rw-r--r--src/libffmpeg/libavcodec/nuv.c216
1 files changed, 0 insertions, 216 deletions
diff --git a/src/libffmpeg/libavcodec/nuv.c b/src/libffmpeg/libavcodec/nuv.c
deleted file mode 100644
index 19e343056..000000000
--- a/src/libffmpeg/libavcodec/nuv.c
+++ /dev/null
@@ -1,216 +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 "common.h"
-#include "avcodec.h"
-
-#include "bswap.h"
-#include "dsputil.h"
-#include "lzo.h"
-#include "rtjpeg.h"
-
-typedef struct {
- AVFrame pic;
- int width, height;
- unsigned int decomp_size;
- unsigned char* decomp_buf;
- uint32_t lq[64], cq[64];
- RTJpegContext rtj;
- DSPContext dsp;
-} NuvContext;
-
-/**
- * \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, uint8_t *src,
- int width, int height) {
- AVPicture pic;
- avpicture_fill(&pic, src, PIX_FMT_YUV420P, width, height);
- img_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,
- 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;
-}
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
- uint8_t *buf, int buf_size) {
- NuvContext *c = (NuvContext *)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;
- }
-
- 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;
- }
-
- // 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;
-
- c->pic.pict_type = FF_I_TYPE;
- c->pic.key_frame = 1;
- // decompress/copy/whatever data
- switch (comptype) {
- 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: {
- rtjpeg_decode_frame_yuv420(&c->rtj, &c->pic, buf, buf_size);
- break;
- }
- case NUV_RTJPEG_IN_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");
- rtjpeg_decode_frame_yuv420(&c->rtj, &c->pic, c->decomp_buf, c->decomp_size);
- break;
- }
- case 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");
- copy_frame(&c->pic, c->decomp_buf, c->width, c->height);
- 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 = (NuvContext *)avctx->priv_data;
- avctx->width = (avctx->width + 1) & ~1;
- avctx->height = (avctx->height + 1) & ~1;
- if (avcodec_check_dimensions(avctx, avctx->height, avctx->width) < 0) {
- return 1;
- }
- avctx->has_b_frames = 0;
- avctx->pix_fmt = PIX_FMT_YUV420P;
- c->pic.data[0] = NULL;
- c->width = avctx->width;
- c->height = avctx->height;
- c->decomp_size = c->height * c->width * 3 / 2;
- c->decomp_buf = av_malloc(c->decomp_size + LZO_OUTPUT_PADDING);
- if (!c->decomp_buf) {
- av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
- return 1;
- }
- dsputil_init(&c->dsp, avctx);
- if (avctx->extradata_size)
- get_quant(avctx, c, avctx->extradata, avctx->extradata_size);
- rtjpeg_decode_init(&c->rtj, &c->dsp, c->width, c->height, c->lq, c->cq);
- return 0;
-}
-
-static int decode_end(AVCodecContext *avctx) {
- NuvContext *c = (NuvContext *)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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