dsicin: Split audio and video decoder

Signed-off-by: Diego Biurrun <diego@biurrun.de>

1 files changed, 0 insertions, 408 deletions

diff --git a/libavcodec/dsicinav.c b/libavcodec/dsicinav.c
deleted file mode 100644
index 6e26c74508..0000000000
--- a/libavcodec/dsicinav.c
+++ /dev/null
@@ -1,408 +0,0 @@
-/*
- * Delphine Software International CIN Audio/Video Decoders
- * Copyright (c) 2006 Gregory Montoir (cyx@users.sourceforge.net)
- *
- * 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
- * Delphine Software International CIN audio/video decoders
- */
-
-#include "libavutil/channel_layout.h"
-#include "avcodec.h"
-#include "bytestream.h"
-#include "internal.h"
-#include "mathops.h"
-
-
-typedef enum CinVideoBitmapIndex {
-    CIN_CUR_BMP = 0, /* current */
-    CIN_PRE_BMP = 1, /* previous */
-    CIN_INT_BMP = 2  /* intermediate */
-} CinVideoBitmapIndex;
-
-typedef struct CinVideoContext {
-    AVCodecContext *avctx;
-    AVFrame *frame;
-    unsigned int bitmap_size;
-    uint32_t palette[256];
-    uint8_t *bitmap_table[3];
-} CinVideoContext;
-
-typedef struct CinAudioContext {
-    int initial_decode_frame;
-    int delta;
-} CinAudioContext;
-
-
-/* table defining a geometric sequence with multiplier = 32767 ^ (1 / 128) */
-static const int16_t cinaudio_delta16_table[256] = {
-         0,      0,      0,      0,      0,      0,      0,      0,
-         0,      0,      0,      0,      0,      0,      0,      0,
-         0,      0,      0, -30210, -27853, -25680, -23677, -21829,
-    -20126, -18556, -17108, -15774, -14543, -13408, -12362, -11398,
-    -10508,  -9689,  -8933,  -8236,  -7593,  -7001,  -6455,  -5951,
-     -5487,  -5059,  -4664,  -4300,  -3964,  -3655,  -3370,  -3107,
-     -2865,  -2641,  -2435,  -2245,  -2070,  -1908,  -1759,  -1622,
-     -1495,  -1379,  -1271,  -1172,  -1080,   -996,   -918,   -847,
-      -781,   -720,   -663,   -612,   -564,   -520,   -479,   -442,
-      -407,   -376,   -346,   -319,   -294,   -271,   -250,   -230,
-      -212,   -196,   -181,   -166,   -153,   -141,   -130,   -120,
-      -111,   -102,    -94,    -87,    -80,    -74,    -68,    -62,
-       -58,    -53,    -49,    -45,    -41,    -38,    -35,    -32,
-       -30,    -27,    -25,    -23,    -21,    -20,    -18,    -17,
-       -15,    -14,    -13,    -12,    -11,    -10,     -9,     -8,
-        -7,     -6,     -5,     -4,     -3,     -2,     -1,      0,
-         0,      1,      2,      3,      4,      5,      6,      7,
-         8,      9,     10,     11,     12,     13,     14,     15,
-        17,     18,     20,     21,     23,     25,     27,     30,
-        32,     35,     38,     41,     45,     49,     53,     58,
-        62,     68,     74,     80,     87,     94,    102,    111,
-       120,    130,    141,    153,    166,    181,    196,    212,
-       230,    250,    271,    294,    319,    346,    376,    407,
-       442,    479,    520,    564,    612,    663,    720,    781,
-       847,    918,    996,   1080,   1172,   1271,   1379,   1495,
-      1622,   1759,   1908,   2070,   2245,   2435,   2641,   2865,
-      3107,   3370,   3655,   3964,   4300,   4664,   5059,   5487,
-      5951,   6455,   7001,   7593,   8236,   8933,   9689,  10508,
-     11398,  12362,  13408,  14543,  15774,  17108,  18556,  20126,
-     21829,  23677,  25680,  27853,  30210,      0,      0,      0,
-         0,      0,      0,      0,      0,      0,      0,      0,
-         0,      0,      0,      0,      0,      0,      0,      0
-};
-
-
-static av_cold int cinvideo_decode_init(AVCodecContext *avctx)
-{
-    CinVideoContext *cin = avctx->priv_data;
-    unsigned int i;
-
-    cin->avctx = avctx;
-    avctx->pix_fmt = AV_PIX_FMT_PAL8;
-
-    cin->frame = av_frame_alloc();
-    if (!cin->frame)
-        return AVERROR(ENOMEM);
-
-    cin->bitmap_size = avctx->width * avctx->height;
-    for (i = 0; i < 3; ++i) {
-        cin->bitmap_table[i] = av_mallocz(cin->bitmap_size);
-        if (!cin->bitmap_table[i])
-            av_log(avctx, AV_LOG_ERROR, "Can't allocate bitmap buffers.\n");
-    }
-
-    return 0;
-}
-
-static void cin_apply_delta_data(const unsigned char *src, unsigned char *dst,
-                                 int size)
-{
-    while (size--)
-        *dst++ += *src++;
-}
-
-static int cin_decode_huffman(const unsigned char *src, int src_size,
-                              unsigned char *dst, int dst_size)
-{
-    int b, huff_code = 0;
-    unsigned char huff_code_table[15];
-    unsigned char *dst_cur       = dst;
-    unsigned char *dst_end       = dst + dst_size;
-    const unsigned char *src_end = src + src_size;
-
-    memcpy(huff_code_table, src, 15);
-    src += 15;
-
-    while (src < src_end) {
-        huff_code = *src++;
-        if ((huff_code >> 4) == 15) {
-            b          = huff_code << 4;
-            huff_code  = *src++;
-            *dst_cur++ = b | (huff_code >> 4);
-        } else
-            *dst_cur++ = huff_code_table[huff_code >> 4];
-        if (dst_cur >= dst_end)
-            break;
-
-        huff_code &= 15;
-        if (huff_code == 15) {
-            *dst_cur++ = *src++;
-        } else
-            *dst_cur++ = huff_code_table[huff_code];
-        if (dst_cur >= dst_end)
-            break;
-    }
-
-    return dst_cur - dst;
-}
-
-static int cin_decode_lzss(const unsigned char *src, int src_size,
-                           unsigned char *dst, int dst_size)
-{
-    uint16_t cmd;
-    int i, sz, offset, code;
-    unsigned char *dst_end       = dst + dst_size, *dst_start = dst;
-    const unsigned char *src_end = src + src_size;
-
-    while (src < src_end && dst < dst_end) {
-        code = *src++;
-        for (i = 0; i < 8 && src < src_end && dst < dst_end; ++i) {
-            if (code & (1 << i)) {
-                *dst++ = *src++;
-            } else {
-                cmd    = AV_RL16(src);
-                src   += 2;
-                offset = cmd >> 4;
-                if ((int)(dst - dst_start) < offset + 1)
-                    return AVERROR_INVALIDDATA;
-                sz = (cmd & 0xF) + 2;
-                /* don't use memcpy/memmove here as the decoding routine
-                 * (ab)uses buffer overlappings to repeat bytes in the
-                 * destination */
-                sz = FFMIN(sz, dst_end - dst);
-                while (sz--) {
-                    *dst = *(dst - offset - 1);
-                    ++dst;
-                }
-            }
-        }
-    }
-
-    return 0;
-}
-
-static void cin_decode_rle(const unsigned char *src, int src_size,
-                           unsigned char *dst, int dst_size)
-{
-    int len, code;
-    unsigned char *dst_end       = dst + dst_size;
-    const unsigned char *src_end = src + src_size;
-
-    while (src < src_end && dst < dst_end) {
-        code = *src++;
-        if (code & 0x80) {
-            if (src >= src_end)
-                break;
-            len = code - 0x7F;
-            memset(dst, *src++, FFMIN(len, dst_end - dst));
-        } else {
-            len = code + 1;
-            memcpy(dst, src, FFMIN3(len, dst_end - dst, src_end - src));
-            src += len;
-        }
-        dst += len;
-    }
-}
-
-static int cinvideo_decode_frame(AVCodecContext *avctx,
-                                 void *data, int *got_frame,
-                                 AVPacket *avpkt)
-{
-    const uint8_t *buf   = avpkt->data;
-    int buf_size         = avpkt->size;
-    CinVideoContext *cin = avctx->priv_data;
-    int i, y, palette_type, palette_colors_count,
-        bitmap_frame_type, bitmap_frame_size, res = 0;
-
-    palette_type         = buf[0];
-    palette_colors_count = AV_RL16(buf + 1);
-    bitmap_frame_type    = buf[3];
-    buf                 += 4;
-
-    bitmap_frame_size = buf_size - 4;
-
-    /* handle palette */
-    if (bitmap_frame_size < palette_colors_count * (3 + (palette_type != 0)))
-        return AVERROR_INVALIDDATA;
-    if (palette_type == 0) {
-        if (palette_colors_count > 256)
-            return AVERROR_INVALIDDATA;
-        for (i = 0; i < palette_colors_count; ++i) {
-            cin->palette[i]    = bytestream_get_le24(&buf);
-            bitmap_frame_size -= 3;
-        }
-    } else {
-        for (i = 0; i < palette_colors_count; ++i) {
-            cin->palette[buf[0]] = AV_RL24(buf + 1);
-            buf                 += 4;
-            bitmap_frame_size   -= 4;
-        }
-    }
-
-    bitmap_frame_size = FFMIN(cin->bitmap_size, bitmap_frame_size);
-
-    /* note: the decoding routines below assumes that
-     * surface.width = surface.pitch */
-    switch (bitmap_frame_type) {
-    case 9:
-        cin_decode_rle(buf, bitmap_frame_size,
-                       cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
-        break;
-    case 34:
-        cin_decode_rle(buf, bitmap_frame_size,
-                       cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
-        cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP],
-                             cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
-        break;
-    case 35:
-        cin_decode_huffman(buf, bitmap_frame_size,
-                           cin->bitmap_table[CIN_INT_BMP], cin->bitmap_size);
-        cin_decode_rle(cin->bitmap_table[CIN_INT_BMP], bitmap_frame_size,
-                       cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
-        break;
-    case 36:
-        bitmap_frame_size = cin_decode_huffman(buf, bitmap_frame_size,
-                                               cin->bitmap_table[CIN_INT_BMP],
-                                               cin->bitmap_size);
-        cin_decode_rle(cin->bitmap_table[CIN_INT_BMP], bitmap_frame_size,
-                       cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
-        cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP],
-                             cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
-        break;
-    case 37:
-        cin_decode_huffman(buf, bitmap_frame_size,
-                           cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
-        break;
-    case 38:
-        res = cin_decode_lzss(buf, bitmap_frame_size,
-                              cin->bitmap_table[CIN_CUR_BMP],
-                              cin->bitmap_size);
-        if (res < 0)
-            return res;
-        break;
-    case 39:
-        res = cin_decode_lzss(buf, bitmap_frame_size,
-                              cin->bitmap_table[CIN_CUR_BMP],
-                              cin->bitmap_size);
-        if (res < 0)
-            return res;
-        cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP],
-                             cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
-        break;
-    }
-
-    if ((res = ff_reget_buffer(avctx, cin->frame)) < 0) {
-        av_log(cin->avctx, AV_LOG_ERROR,
-               "delphinecinvideo: reget_buffer() failed to allocate a frame\n");
-        return res;
-    }
-
-    memcpy(cin->frame->data[1], cin->palette, sizeof(cin->palette));
-    cin->frame->palette_has_changed = 1;
-    for (y = 0; y < cin->avctx->height; ++y)
-        memcpy(cin->frame->data[0] + (cin->avctx->height - 1 - y) * cin->frame->linesize[0],
-               cin->bitmap_table[CIN_CUR_BMP] + y * cin->avctx->width,
-               cin->avctx->width);
-
-    FFSWAP(uint8_t *, cin->bitmap_table[CIN_CUR_BMP],
-                      cin->bitmap_table[CIN_PRE_BMP]);
-
-    if ((res = av_frame_ref(data, cin->frame)) < 0)
-        return res;
-
-    *got_frame = 1;
-
-    return buf_size;
-}
-
-static av_cold int cinvideo_decode_end(AVCodecContext *avctx)
-{
-    CinVideoContext *cin = avctx->priv_data;
-    int i;
-
-    av_frame_free(&cin->frame);
-
-    for (i = 0; i < 3; ++i)
-        av_free(cin->bitmap_table[i]);
-
-    return 0;
-}
-
-static av_cold int cinaudio_decode_init(AVCodecContext *avctx)
-{
-    CinAudioContext *cin = avctx->priv_data;
-
-    cin->initial_decode_frame = 1;
-    cin->delta                = 0;
-    avctx->sample_fmt         = AV_SAMPLE_FMT_S16;
-    avctx->channels           = 1;
-    avctx->channel_layout     = AV_CH_LAYOUT_MONO;
-
-    return 0;
-}
-
-static int cinaudio_decode_frame(AVCodecContext *avctx, void *data,
-                                 int *got_frame_ptr, AVPacket *avpkt)
-{
-    AVFrame *frame         = data;
-    const uint8_t *buf     = avpkt->data;
-    CinAudioContext *cin   = avctx->priv_data;
-    const uint8_t *buf_end = buf + avpkt->size;
-    int16_t *samples;
-    int delta, ret;
-
-    /* get output buffer */
-    frame->nb_samples = avpkt->size - cin->initial_decode_frame;
-    if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
-        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return ret;
-    }
-    samples = (int16_t *)frame->data[0];
-
-    delta = cin->delta;
-    if (cin->initial_decode_frame) {
-        cin->initial_decode_frame = 0;
-        delta                     = sign_extend(AV_RL16(buf), 16);
-        buf                      += 2;
-        *samples++                = delta;
-    }
-    while (buf < buf_end) {
-        delta     += cinaudio_delta16_table[*buf++];
-        delta      = av_clip_int16(delta);
-        *samples++ = delta;
-    }
-    cin->delta = delta;
-
-    *got_frame_ptr = 1;
-
-    return avpkt->size;
-}
-
-AVCodec ff_dsicinvideo_decoder = {
-    .name           = "dsicinvideo",
-    .long_name      = NULL_IF_CONFIG_SMALL("Delphine Software International CIN video"),
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_DSICINVIDEO,
-    .priv_data_size = sizeof(CinVideoContext),
-    .init           = cinvideo_decode_init,
-    .close          = cinvideo_decode_end,
-    .decode         = cinvideo_decode_frame,
-    .capabilities   = CODEC_CAP_DR1,
-};
-
-AVCodec ff_dsicinaudio_decoder = {
-    .name           = "dsicinaudio",
-    .long_name      = NULL_IF_CONFIG_SMALL("Delphine Software International CIN audio"),
-    .type           = AVMEDIA_TYPE_AUDIO,
-    .id             = AV_CODEC_ID_DSICINAUDIO,
-    .priv_data_size = sizeof(CinAudioContext),
-    .init           = cinaudio_decode_init,
-    .decode         = cinaudio_decode_frame,
-    .capabilities   = CODEC_CAP_DR1,
-};