utvideo: Rename utvideo.c to utvideodec.c

Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>

1 files changed, 0 insertions, 591 deletions

diff --git a/libavcodec/utvideo.c b/libavcodec/utvideo.c
deleted file mode 100644
index 27980d8e5b..0000000000
--- a/libavcodec/utvideo.c
+++ /dev/null
@@ -1,591 +0,0 @@
-/*
- * Ut Video decoder
- * Copyright (c) 2011 Konstantin Shishkov
- *
- * This file is part of Libav.
- *
- * Libav 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,
- * 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
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file
- * Ut Video decoder
- */
-
-#include <stdlib.h>
-
-#include "libavutil/intreadwrite.h"
-#include "avcodec.h"
-#include "bytestream.h"
-#include "get_bits.h"
-#include "dsputil.h"
-#include "thread.h"
-
-enum {
-    PRED_NONE = 0,
-    PRED_LEFT,
-    PRED_GRADIENT,
-    PRED_MEDIAN,
-};
-
-typedef struct UtvideoContext {
-    AVCodecContext *avctx;
-    AVFrame pic;
-    DSPContext dsp;
-
-    uint32_t frame_info_size, flags, frame_info;
-    int planes;
-    int slices;
-    int compression;
-    int interlaced;
-    int frame_pred;
-
-    uint8_t *slice_bits;
-    int slice_bits_size;
-} UtvideoContext;
-
-typedef struct HuffEntry {
-    uint8_t sym;
-    uint8_t len;
-} HuffEntry;
-
-static int huff_cmp(const void *a, const void *b)
-{
-    const HuffEntry *aa = a, *bb = b;
-    return (aa->len - bb->len)*256 + aa->sym - bb->sym;
-}
-
-static int build_huff(const uint8_t *src, VLC *vlc, int *fsym)
-{
-    int i;
-    HuffEntry he[256];
-    int last;
-    uint32_t codes[256];
-    uint8_t bits[256];
-    uint8_t syms[256];
-    uint32_t code;
-
-    *fsym = -1;
-    for (i = 0; i < 256; i++) {
-        he[i].sym = i;
-        he[i].len = *src++;
-    }
-    qsort(he, 256, sizeof(*he), huff_cmp);
-
-    if (!he[0].len) {
-        *fsym = he[0].sym;
-        return 0;
-    }
-    if (he[0].len > 32)
-        return -1;
-
-    last = 255;
-    while (he[last].len == 255 && last)
-        last--;
-
-    code = 1;
-    for (i = last; i >= 0; i--) {
-        codes[i] = code >> (32 - he[i].len);
-        bits[i]  = he[i].len;
-        syms[i]  = he[i].sym;
-        code += 0x80000000u >> (he[i].len - 1);
-    }
-
-    return ff_init_vlc_sparse(vlc, FFMIN(he[last].len, 9), last + 1,
-                              bits,  sizeof(*bits),  sizeof(*bits),
-                              codes, sizeof(*codes), sizeof(*codes),
-                              syms,  sizeof(*syms),  sizeof(*syms), 0);
-}
-
-static int decode_plane(UtvideoContext *c, int plane_no,
-                        uint8_t *dst, int step, int stride,
-                        int width, int height,
-                        const uint8_t *src, int use_pred)
-{
-    int i, j, slice, pix;
-    int sstart, send;
-    VLC vlc;
-    GetBitContext gb;
-    int prev, fsym;
-    const int cmask = ~(!plane_no && c->avctx->pix_fmt == PIX_FMT_YUV420P);
-
-    if (build_huff(src, &vlc, &fsym)) {
-        av_log(c->avctx, AV_LOG_ERROR, "Cannot build Huffman codes\n");
-        return AVERROR_INVALIDDATA;
-    }
-    if (fsym >= 0) { // build_huff reported a symbol to fill slices with
-        send = 0;
-        for (slice = 0; slice < c->slices; slice++) {
-            uint8_t *dest;
-
-            sstart = send;
-            send   = (height * (slice + 1) / c->slices) & cmask;
-            dest   = dst + sstart * stride;
-
-            prev = 0x80;
-            for (j = sstart; j < send; j++) {
-                for (i = 0; i < width * step; i += step) {
-                    pix = fsym;
-                    if (use_pred) {
-                        prev += pix;
-                        pix   = prev;
-                    }
-                    dest[i] = pix;
-                }
-                dest += stride;
-            }
-        }
-        return 0;
-    }
-
-    src      += 256;
-
-    send = 0;
-    for (slice = 0; slice < c->slices; slice++) {
-        uint8_t *dest;
-        int slice_data_start, slice_data_end, slice_size;
-
-        sstart = send;
-        send   = (height * (slice + 1) / c->slices) & cmask;
-        dest   = dst + sstart * stride;
-
-        // slice offset and size validation was done earlier
-        slice_data_start = slice ? AV_RL32(src + slice * 4 - 4) : 0;
-        slice_data_end   = AV_RL32(src + slice * 4);
-        slice_size       = slice_data_end - slice_data_start;
-
-        if (!slice_size) {
-            for (j = sstart; j < send; j++) {
-                for (i = 0; i < width * step; i += step)
-                    dest[i] = 0x80;
-                dest += stride;
-            }
-            continue;
-        }
-
-        memcpy(c->slice_bits, src + slice_data_start + c->slices * 4,
-               slice_size);
-        memset(c->slice_bits + slice_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
-        c->dsp.bswap_buf((uint32_t *) c->slice_bits, (uint32_t *) c->slice_bits,
-                         (slice_data_end - slice_data_start + 3) >> 2);
-        init_get_bits(&gb, c->slice_bits, slice_size * 8);
-
-        prev = 0x80;
-        for (j = sstart; j < send; j++) {
-            for (i = 0; i < width * step; i += step) {
-                if (get_bits_left(&gb) <= 0) {
-                    av_log(c->avctx, AV_LOG_ERROR,
-                           "Slice decoding ran out of bits\n");
-                    goto fail;
-                }
-                pix = get_vlc2(&gb, vlc.table, vlc.bits, 4);
-                if (pix < 0) {
-                    av_log(c->avctx, AV_LOG_ERROR, "Decoding error\n");
-                    goto fail;
-                }
-                if (use_pred) {
-                    prev += pix;
-                    pix   = prev;
-                }
-                dest[i] = pix;
-            }
-            dest += stride;
-        }
-        if (get_bits_left(&gb) > 32)
-            av_log(c->avctx, AV_LOG_WARNING,
-                   "%d bits left after decoding slice\n", get_bits_left(&gb));
-    }
-
-    ff_free_vlc(&vlc);
-
-    return 0;
-fail:
-    ff_free_vlc(&vlc);
-    return AVERROR_INVALIDDATA;
-}
-
-static const int rgb_order[4] = { 1, 2, 0, 3 };
-
-static void restore_rgb_planes(uint8_t *src, int step, int stride, int width,
-                               int height)
-{
-    int i, j;
-    uint8_t r, g, b;
-
-    for (j = 0; j < height; j++) {
-        for (i = 0; i < width * step; i += step) {
-            r = src[i];
-            g = src[i + 1];
-            b = src[i + 2];
-            src[i]     = r + g - 0x80;
-            src[i + 2] = b + g - 0x80;
-        }
-        src += stride;
-    }
-}
-
-static void restore_median(uint8_t *src, int step, int stride,
-                           int width, int height, int slices, int rmode)
-{
-    int i, j, slice;
-    int A, B, C;
-    uint8_t *bsrc;
-    int slice_start, slice_height;
-    const int cmask = ~rmode;
-
-    for (slice = 0; slice < slices; slice++) {
-        slice_start  = ((slice * height) / slices) & cmask;
-        slice_height = ((((slice + 1) * height) / slices) & cmask) -
-                       slice_start;
-
-        bsrc = src + slice_start * stride;
-
-        // first line - left neighbour prediction
-        bsrc[0] += 0x80;
-        A = bsrc[0];
-        for (i = step; i < width * step; i += step) {
-            bsrc[i] += A;
-            A        = bsrc[i];
-        }
-        bsrc += stride;
-        if (slice_height == 1)
-            continue;
-        // second line - first element has top prediction, the rest uses median
-        C        = bsrc[-stride];
-        bsrc[0] += C;
-        A        = bsrc[0];
-        for (i = step; i < width * step; i += step) {
-            B        = bsrc[i - stride];
-            bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
-            C        = B;
-            A        = bsrc[i];
-        }
-        bsrc += stride;
-        // the rest of lines use continuous median prediction
-        for (j = 2; j < slice_height; j++) {
-            for (i = 0; i < width * step; i += step) {
-                B        = bsrc[i - stride];
-                bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
-                C        = B;
-                A        = bsrc[i];
-            }
-            bsrc += stride;
-        }
-    }
-}
-
-/* UtVideo interlaced mode treats every two lines as a single one,
- * so restoring function should take care of possible padding between
- * two parts of the same "line".
- */
-static void restore_median_il(uint8_t *src, int step, int stride,
-                              int width, int height, int slices, int rmode)
-{
-    int i, j, slice;
-    int A, B, C;
-    uint8_t *bsrc;
-    int slice_start, slice_height;
-    const int cmask   = ~(rmode ? 3 : 1);
-    const int stride2 = stride << 1;
-
-    for (slice = 0; slice < slices; slice++) {
-        slice_start    = ((slice * height) / slices) & cmask;
-        slice_height   = ((((slice + 1) * height) / slices) & cmask) -
-                         slice_start;
-        slice_height >>= 1;
-
-        bsrc = src + slice_start * stride;
-
-        // first line - left neighbour prediction
-        bsrc[0] += 0x80;
-        A        = bsrc[0];
-        for (i = step; i < width * step; i += step) {
-            bsrc[i] += A;
-            A        = bsrc[i];
-        }
-        for (i = 0; i < width * step; i += step) {
-            bsrc[stride + i] += A;
-            A                 = bsrc[stride + i];
-        }
-        bsrc += stride2;
-        if (slice_height == 1)
-            continue;
-        // second line - first element has top prediction, the rest uses median
-        C        = bsrc[-stride2];
-        bsrc[0] += C;
-        A        = bsrc[0];
-        for (i = step; i < width * step; i += step) {
-            B        = bsrc[i - stride2];
-            bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
-            C        = B;
-            A        = bsrc[i];
-        }
-        for (i = 0; i < width * step; i += step) {
-            B                 = bsrc[i - stride];
-            bsrc[stride + i] += mid_pred(A, B, (uint8_t)(A + B - C));
-            C                 = B;
-            A                 = bsrc[stride + i];
-        }
-        bsrc += stride2;
-        // the rest of lines use continuous median prediction
-        for (j = 2; j < slice_height; j++) {
-            for (i = 0; i < width * step; i += step) {
-                B        = bsrc[i - stride2];
-                bsrc[i] += mid_pred(A, B, (uint8_t)(A + B - C));
-                C        = B;
-                A        = bsrc[i];
-            }
-            for (i = 0; i < width * step; i += step) {
-                B                 = bsrc[i - stride];
-                bsrc[i + stride] += mid_pred(A, B, (uint8_t)(A + B - C));
-                C                 = B;
-                A                 = bsrc[i + stride];
-            }
-            bsrc += stride2;
-        }
-    }
-}
-
-static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
-                        AVPacket *avpkt)
-{
-    const uint8_t *buf = avpkt->data;
-    int buf_size = avpkt->size;
-    UtvideoContext *c = avctx->priv_data;
-    int i, j;
-    const uint8_t *plane_start[5];
-    int plane_size, max_slice_size = 0, slice_start, slice_end, slice_size;
-    int ret;
-    GetByteContext gb;
-
-    if (c->pic.data[0])
-        ff_thread_release_buffer(avctx, &c->pic);
-
-    c->pic.reference = 1;
-    c->pic.buffer_hints = FF_BUFFER_HINTS_VALID;
-    if ((ret = ff_thread_get_buffer(avctx, &c->pic)) < 0) {
-        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return ret;
-    }
-
-    ff_thread_finish_setup(avctx);
-
-    /* parse plane structure to get frame flags and validate slice offsets */
-    bytestream2_init(&gb, buf, buf_size);
-    for (i = 0; i < c->planes; i++) {
-        plane_start[i] = gb.buffer;
-        if (bytestream2_get_bytes_left(&gb) < 256 + 4 * c->slices) {
-            av_log(avctx, AV_LOG_ERROR, "Insufficient data for a plane\n");
-            return AVERROR_INVALIDDATA;
-        }
-        bytestream2_skipu(&gb, 256);
-        slice_start = 0;
-        slice_end   = 0;
-        for (j = 0; j < c->slices; j++) {
-            slice_end   = bytestream2_get_le32u(&gb);
-            slice_size  = slice_end - slice_start;
-            if (slice_end <= 0 || slice_size <= 0 ||
-                bytestream2_get_bytes_left(&gb) < slice_end) {
-                av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n");
-                return AVERROR_INVALIDDATA;
-            }
-            slice_start = slice_end;
-            max_slice_size = FFMAX(max_slice_size, slice_size);
-        }
-        plane_size = slice_end;
-        bytestream2_skipu(&gb, plane_size);
-    }
-    plane_start[c->planes] = gb.buffer;
-    if (bytestream2_get_bytes_left(&gb) < c->frame_info_size) {
-        av_log(avctx, AV_LOG_ERROR, "Not enough data for frame information\n");
-        return AVERROR_INVALIDDATA;
-    }
-    c->frame_info = bytestream2_get_le32u(&gb);
-    av_log(avctx, AV_LOG_DEBUG, "frame information flags %X\n", c->frame_info);
-
-    c->frame_pred = (c->frame_info >> 8) & 3;
-
-    if (c->frame_pred == PRED_GRADIENT) {
-        av_log_ask_for_sample(avctx, "Frame uses gradient prediction\n");
-        return AVERROR_PATCHWELCOME;
-    }
-
-    av_fast_malloc(&c->slice_bits, &c->slice_bits_size,
-                   max_slice_size + FF_INPUT_BUFFER_PADDING_SIZE);
-
-    if (!c->slice_bits) {
-        av_log(avctx, AV_LOG_ERROR, "Cannot allocate temporary buffer\n");
-        return AVERROR(ENOMEM);
-    }
-
-    switch (c->avctx->pix_fmt) {
-    case PIX_FMT_RGB24:
-    case PIX_FMT_RGBA:
-        for (i = 0; i < c->planes; i++) {
-            ret = decode_plane(c, i, c->pic.data[0] + rgb_order[i], c->planes,
-                               c->pic.linesize[0], avctx->width, avctx->height,
-                               plane_start[i], c->frame_pred == PRED_LEFT);
-            if (ret)
-                return ret;
-            if (c->frame_pred == PRED_MEDIAN) {
-                if (!c->interlaced) {
-                    restore_median(c->pic.data[0] + rgb_order[i], c->planes,
-                                   c->pic.linesize[0], avctx->width,
-                                   avctx->height, c->slices, 0);
-                } else {
-                    restore_median_il(c->pic.data[0] + rgb_order[i], c->planes,
-                                      c->pic.linesize[0], avctx->width,
-                                      avctx->height, c->slices, 0);
-                }
-            }
-        }
-        restore_rgb_planes(c->pic.data[0], c->planes, c->pic.linesize[0],
-                           avctx->width, avctx->height);
-        break;
-    case PIX_FMT_YUV420P:
-        for (i = 0; i < 3; i++) {
-            ret = decode_plane(c, i, c->pic.data[i], 1, c->pic.linesize[i],
-                               avctx->width >> !!i, avctx->height >> !!i,
-                               plane_start[i], c->frame_pred == PRED_LEFT);
-            if (ret)
-                return ret;
-            if (c->frame_pred == PRED_MEDIAN) {
-                if (!c->interlaced) {
-                    restore_median(c->pic.data[i], 1, c->pic.linesize[i],
-                                   avctx->width >> !!i, avctx->height >> !!i,
-                                   c->slices, !i);
-                } else {
-                    restore_median_il(c->pic.data[i], 1, c->pic.linesize[i],
-                                      avctx->width  >> !!i,
-                                      avctx->height >> !!i,
-                                      c->slices, !i);
-                }
-            }
-        }
-        break;
-    case PIX_FMT_YUV422P:
-        for (i = 0; i < 3; i++) {
-            ret = decode_plane(c, i, c->pic.data[i], 1, c->pic.linesize[i],
-                               avctx->width >> !!i, avctx->height,
-                               plane_start[i], c->frame_pred == PRED_LEFT);
-            if (ret)
-                return ret;
-            if (c->frame_pred == PRED_MEDIAN) {
-                if (!c->interlaced) {
-                    restore_median(c->pic.data[i], 1, c->pic.linesize[i],
-                                   avctx->width >> !!i, avctx->height,
-                                   c->slices, 0);
-                } else {
-                    restore_median_il(c->pic.data[i], 1, c->pic.linesize[i],
-                                      avctx->width >> !!i, avctx->height,
-                                      c->slices, 0);
-                }
-            }
-        }
-        break;
-    }
-
-    c->pic.key_frame = 1;
-    c->pic.pict_type = AV_PICTURE_TYPE_I;
-    c->pic.interlaced_frame = !!c->interlaced;
-
-    *data_size = sizeof(AVFrame);
-    *(AVFrame*)data = c->pic;
-
-    /* always report that the buffer was completely consumed */
-    return buf_size;
-}
-
-static av_cold int decode_init(AVCodecContext *avctx)
-{
-    UtvideoContext * const c = avctx->priv_data;
-
-    c->avctx = avctx;
-
-    ff_dsputil_init(&c->dsp, avctx);
-
-    if (avctx->extradata_size < 16) {
-        av_log(avctx, AV_LOG_ERROR,
-               "Insufficient extradata size %d, should be at least 16\n",
-               avctx->extradata_size);
-        return AVERROR_INVALIDDATA;
-    }
-
-    av_log(avctx, AV_LOG_DEBUG, "Encoder version %d.%d.%d.%d\n",
-           avctx->extradata[3], avctx->extradata[2],
-           avctx->extradata[1], avctx->extradata[0]);
-    av_log(avctx, AV_LOG_DEBUG, "Original format %X\n",
-           AV_RB32(avctx->extradata + 4));
-    c->frame_info_size = AV_RL32(avctx->extradata + 8);
-    c->flags           = AV_RL32(avctx->extradata + 12);
-
-    if (c->frame_info_size != 4)
-        av_log_ask_for_sample(avctx, "Frame info is not 4 bytes\n");
-    av_log(avctx, AV_LOG_DEBUG, "Encoding parameters %08X\n", c->flags);
-    c->slices      = (c->flags >> 24) + 1;
-    c->compression = c->flags & 1;
-    c->interlaced  = c->flags & 0x800;
-
-    c->slice_bits_size = 0;
-
-    switch (avctx->codec_tag) {
-    case MKTAG('U', 'L', 'R', 'G'):
-        c->planes      = 3;
-        avctx->pix_fmt = PIX_FMT_RGB24;
-        break;
-    case MKTAG('U', 'L', 'R', 'A'):
-        c->planes      = 4;
-        avctx->pix_fmt = PIX_FMT_RGBA;
-        break;
-    case MKTAG('U', 'L', 'Y', '0'):
-        c->planes      = 3;
-        avctx->pix_fmt = PIX_FMT_YUV420P;
-        break;
-    case MKTAG('U', 'L', 'Y', '2'):
-        c->planes      = 3;
-        avctx->pix_fmt = PIX_FMT_YUV422P;
-        break;
-    default:
-        av_log(avctx, AV_LOG_ERROR, "Unknown Ut Video FOURCC provided (%08X)\n",
-               avctx->codec_tag);
-        return AVERROR_INVALIDDATA;
-    }
-
-    return 0;
-}
-
-static av_cold int decode_end(AVCodecContext *avctx)
-{
-    UtvideoContext * const c = avctx->priv_data;
-
-    if (c->pic.data[0])
-        ff_thread_release_buffer(avctx, &c->pic);
-
-    av_freep(&c->slice_bits);
-
-    return 0;
-}
-
-AVCodec ff_utvideo_decoder = {
-    .name           = "utvideo",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_UTVIDEO,
-    .priv_data_size = sizeof(UtvideoContext),
-    .init           = decode_init,
-    .close          = decode_end,
-    .decode         = decode_frame,
-    .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
-    .long_name      = NULL_IF_CONFIG_SMALL("Ut Video"),
-};