mirror of
https://github.com/nyanmisaka/ffmpeg-rockchip.git
synced 2025-10-31 12:36:41 +08:00
48286d4d98
It reduces typing: Before this patch, there were 105 codecs whose long_name-definition exceeded the 80 char line length limit. Now there are only nine of them. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
585 lines
21 KiB
C
585 lines
21 KiB
C
/*
|
|
* Flash Screen Video decoder
|
|
* Copyright (C) 2004 Alex Beregszaszi
|
|
* Copyright (C) 2006 Benjamin Larsson
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Flash Screen Video decoder
|
|
* @author Alex Beregszaszi
|
|
* @author Benjamin Larsson
|
|
* @author Daniel Verkamp
|
|
* @author Konstantin Shishkov
|
|
*
|
|
* A description of the bitstream format for Flash Screen Video version 1/2
|
|
* is part of the SWF File Format Specification (version 10), which can be
|
|
* downloaded from http://www.adobe.com/devnet/swf.html.
|
|
*/
|
|
|
|
#include "config_components.h"
|
|
|
|
#include <stddef.h>
|
|
#include <zlib.h>
|
|
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "avcodec.h"
|
|
#include "bytestream.h"
|
|
#include "codec_internal.h"
|
|
#include "decode.h"
|
|
#include "get_bits.h"
|
|
#include "zlib_wrapper.h"
|
|
|
|
typedef struct BlockInfo {
|
|
const uint8_t *pos;
|
|
int size;
|
|
} BlockInfo;
|
|
|
|
typedef struct FlashSVContext {
|
|
AVCodecContext *avctx;
|
|
AVFrame *frame;
|
|
int image_width, image_height;
|
|
int block_width, block_height;
|
|
uint8_t *tmpblock;
|
|
int block_size;
|
|
int ver;
|
|
const uint32_t *pal;
|
|
int is_keyframe;
|
|
const uint8_t *keyframedata;
|
|
AVBufferRef *keyframedata_buf;
|
|
uint8_t *keyframe;
|
|
BlockInfo *blocks;
|
|
int color_depth;
|
|
int zlibprime_curr, zlibprime_prev;
|
|
int diff_start, diff_height;
|
|
FFZStream zstream;
|
|
uint8_t tmp[UINT16_MAX];
|
|
} FlashSVContext;
|
|
|
|
static int decode_hybrid(const uint8_t *sptr, const uint8_t *sptr_end, uint8_t *dptr, int dx, int dy,
|
|
int h, int w, int stride, const uint32_t *pal)
|
|
{
|
|
int x, y;
|
|
const uint8_t *orig_src = sptr;
|
|
|
|
for (y = dx + h; y > dx; y--) {
|
|
uint8_t *dst = dptr + (y * stride) + dy * 3;
|
|
for (x = 0; x < w; x++) {
|
|
if (sptr >= sptr_end)
|
|
return AVERROR_INVALIDDATA;
|
|
if (*sptr & 0x80) {
|
|
/* 15-bit color */
|
|
unsigned c = AV_RB16(sptr) & ~0x8000;
|
|
unsigned b = c & 0x1F;
|
|
unsigned g = (c >> 5) & 0x1F;
|
|
unsigned r = c >> 10;
|
|
/* 000aaabb -> aaabbaaa */
|
|
*dst++ = (b << 3) | (b >> 2);
|
|
*dst++ = (g << 3) | (g >> 2);
|
|
*dst++ = (r << 3) | (r >> 2);
|
|
sptr += 2;
|
|
} else {
|
|
/* palette index */
|
|
uint32_t c = pal[*sptr++];
|
|
bytestream_put_le24(&dst, c);
|
|
}
|
|
}
|
|
}
|
|
return sptr - orig_src;
|
|
}
|
|
|
|
static av_cold int flashsv_decode_end(AVCodecContext *avctx)
|
|
{
|
|
FlashSVContext *s = avctx->priv_data;
|
|
|
|
ff_inflate_end(&s->zstream);
|
|
/* release the frame if needed */
|
|
av_frame_free(&s->frame);
|
|
|
|
/* free the tmpblock */
|
|
av_freep(&s->tmpblock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int flashsv_decode_init(AVCodecContext *avctx)
|
|
{
|
|
FlashSVContext *s = avctx->priv_data;
|
|
|
|
s->avctx = avctx;
|
|
avctx->pix_fmt = AV_PIX_FMT_BGR24;
|
|
|
|
s->frame = av_frame_alloc();
|
|
if (!s->frame) {
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
return ff_inflate_init(&s->zstream, avctx);
|
|
}
|
|
|
|
static int flashsv2_prime(FlashSVContext *s, const uint8_t *src, int size)
|
|
{
|
|
int zret; // Zlib return code
|
|
static const uint8_t zlib_header[] = { 0x78, 0x01 };
|
|
z_stream *const zstream = &s->zstream.zstream;
|
|
uint8_t *data = s->tmpblock;
|
|
unsigned remaining;
|
|
|
|
if (!src)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
zstream->next_in = src;
|
|
zstream->avail_in = size;
|
|
zstream->next_out = data;
|
|
zstream->avail_out = s->block_size * 3;
|
|
zret = inflate(zstream, Z_SYNC_FLUSH);
|
|
if (zret != Z_OK && zret != Z_STREAM_END)
|
|
return AVERROR_UNKNOWN;
|
|
remaining = s->block_size * 3 - zstream->avail_out;
|
|
|
|
if ((zret = inflateReset(zstream)) != Z_OK) {
|
|
av_log(s->avctx, AV_LOG_ERROR, "Inflate reset error: %d\n", zret);
|
|
return AVERROR_UNKNOWN;
|
|
}
|
|
|
|
/* Create input for zlib that is equivalent to encoding the output
|
|
* from above and decoding it again (the net result of this is that
|
|
* the dictionary of past decoded data is correctly primed and
|
|
* the adler32 checksum is correctly initialized).
|
|
* This is accomplished by synthetizing blocks of uncompressed data
|
|
* out of the output from above. See section 3.2.4 of RFC 1951. */
|
|
zstream->next_in = zlib_header;
|
|
zstream->avail_in = sizeof(zlib_header);
|
|
zret = inflate(zstream, Z_SYNC_FLUSH);
|
|
if (zret != Z_OK)
|
|
return AVERROR_UNKNOWN;
|
|
while (remaining > 0) {
|
|
unsigned block_size = FFMIN(UINT16_MAX, remaining);
|
|
uint8_t header[5];
|
|
/* Bit 0: Non-last-block, bits 1-2: BTYPE for uncompressed block */
|
|
header[0] = 0;
|
|
/* Block size */
|
|
AV_WL16(header + 1, block_size);
|
|
/* Block size (one's complement) */
|
|
AV_WL16(header + 3, block_size ^ 0xFFFF);
|
|
zstream->next_in = header;
|
|
zstream->avail_in = sizeof(header);
|
|
zstream->next_out = s->tmp;
|
|
zstream->avail_out = sizeof(s->tmp);
|
|
zret = inflate(zstream, Z_SYNC_FLUSH);
|
|
if (zret != Z_OK)
|
|
return AVERROR_UNKNOWN;
|
|
zstream->next_in = data;
|
|
zstream->avail_in = block_size;
|
|
zret = inflate(zstream, Z_SYNC_FLUSH);
|
|
if (zret != Z_OK)
|
|
return AVERROR_UNKNOWN;
|
|
data += block_size;
|
|
remaining -= block_size;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int flashsv_decode_block(AVCodecContext *avctx, const AVPacket *avpkt,
|
|
GetBitContext *gb, int block_size,
|
|
int width, int height, int x_pos, int y_pos,
|
|
int blk_idx)
|
|
{
|
|
struct FlashSVContext *s = avctx->priv_data;
|
|
z_stream *const zstream = &s->zstream.zstream;
|
|
uint8_t *line = s->tmpblock;
|
|
int k;
|
|
int ret = inflateReset(zstream);
|
|
if (ret != Z_OK) {
|
|
av_log(avctx, AV_LOG_ERROR, "Inflate reset error: %d\n", ret);
|
|
return AVERROR_UNKNOWN;
|
|
}
|
|
if (s->zlibprime_curr || s->zlibprime_prev) {
|
|
ret = flashsv2_prime(s,
|
|
s->blocks[blk_idx].pos,
|
|
s->blocks[blk_idx].size);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
zstream->next_in = avpkt->data + get_bits_count(gb) / 8;
|
|
zstream->avail_in = block_size;
|
|
zstream->next_out = s->tmpblock;
|
|
zstream->avail_out = s->block_size * 3;
|
|
ret = inflate(zstream, Z_FINISH);
|
|
if (ret == Z_DATA_ERROR) {
|
|
av_log(avctx, AV_LOG_ERROR, "Zlib resync occurred\n");
|
|
inflateSync(zstream);
|
|
ret = inflate(zstream, Z_FINISH);
|
|
}
|
|
|
|
if (ret != Z_OK && ret != Z_STREAM_END) {
|
|
//return -1;
|
|
}
|
|
|
|
if (s->is_keyframe) {
|
|
s->blocks[blk_idx].pos = s->keyframedata + (get_bits_count(gb) / 8);
|
|
s->blocks[blk_idx].size = block_size;
|
|
}
|
|
|
|
y_pos += s->diff_start;
|
|
|
|
if (!s->color_depth) {
|
|
/* Flash Screen Video stores the image upside down, so copy
|
|
* lines to destination in reverse order. */
|
|
for (k = 1; k <= s->diff_height; k++) {
|
|
memcpy(s->frame->data[0] + x_pos * 3 +
|
|
(s->image_height - y_pos - k) * s->frame->linesize[0],
|
|
line, width * 3);
|
|
/* advance source pointer to next line */
|
|
line += width * 3;
|
|
}
|
|
} else {
|
|
/* hybrid 15-bit/palette mode */
|
|
ret = decode_hybrid(s->tmpblock, zstream->next_out,
|
|
s->frame->data[0],
|
|
s->image_height - (y_pos + 1 + s->diff_height),
|
|
x_pos, s->diff_height, width,
|
|
s->frame->linesize[0], s->pal);
|
|
if (ret < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "decode_hybrid failed\n");
|
|
return ret;
|
|
}
|
|
}
|
|
skip_bits_long(gb, 8 * block_size); /* skip the consumed bits */
|
|
return 0;
|
|
}
|
|
|
|
static int flashsv_decode_frame(AVCodecContext *avctx, AVFrame *rframe,
|
|
int *got_frame, AVPacket *avpkt)
|
|
{
|
|
int buf_size = avpkt->size;
|
|
FlashSVContext *s = avctx->priv_data;
|
|
int h_blocks, v_blocks, h_part, v_part, i, j, ret;
|
|
GetBitContext gb;
|
|
int last_blockwidth = s->block_width;
|
|
int last_blockheight= s->block_height;
|
|
|
|
/* no supplementary picture */
|
|
if (buf_size == 0)
|
|
return 0;
|
|
if (buf_size < 4)
|
|
return -1;
|
|
|
|
if ((ret = init_get_bits8(&gb, avpkt->data, buf_size)) < 0)
|
|
return ret;
|
|
|
|
/* start to parse the bitstream */
|
|
s->block_width = 16 * (get_bits(&gb, 4) + 1);
|
|
s->image_width = get_bits(&gb, 12);
|
|
s->block_height = 16 * (get_bits(&gb, 4) + 1);
|
|
s->image_height = get_bits(&gb, 12);
|
|
|
|
if ( last_blockwidth != s->block_width
|
|
|| last_blockheight!= s->block_height)
|
|
av_freep(&s->blocks);
|
|
|
|
if (s->ver == 2) {
|
|
skip_bits(&gb, 6);
|
|
if (get_bits1(&gb)) {
|
|
avpriv_request_sample(avctx, "iframe");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
if (get_bits1(&gb)) {
|
|
avpriv_request_sample(avctx, "Custom palette");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
}
|
|
|
|
/* calculate number of blocks and size of border (partial) blocks */
|
|
h_blocks = s->image_width / s->block_width;
|
|
h_part = s->image_width % s->block_width;
|
|
v_blocks = s->image_height / s->block_height;
|
|
v_part = s->image_height % s->block_height;
|
|
|
|
/* the block size could change between frames, make sure the buffer
|
|
* is large enough, if not, get a larger one */
|
|
if (s->block_size < s->block_width * s->block_height) {
|
|
int tmpblock_size = 3 * s->block_width * s->block_height, err;
|
|
|
|
if ((err = av_reallocp(&s->tmpblock, tmpblock_size)) < 0) {
|
|
s->block_size = 0;
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Cannot allocate decompression buffer.\n");
|
|
return err;
|
|
}
|
|
}
|
|
s->block_size = s->block_width * s->block_height;
|
|
|
|
/* initialize the image size once */
|
|
if (avctx->width == 0 && avctx->height == 0) {
|
|
if ((ret = ff_set_dimensions(avctx, s->image_width, s->image_height)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* check for changes of image width and image height */
|
|
if (avctx->width != s->image_width || avctx->height != s->image_height) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Frame width or height differs from first frame!\n");
|
|
av_log(avctx, AV_LOG_ERROR, "fh = %d, fv %d vs ch = %d, cv = %d\n",
|
|
avctx->height, avctx->width, s->image_height, s->image_width);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
/* we care for keyframes only in Screen Video v2 */
|
|
s->is_keyframe = (avpkt->flags & AV_PKT_FLAG_KEY) && (s->ver == 2);
|
|
if (s->is_keyframe) {
|
|
int err = av_buffer_replace(&s->keyframedata_buf, avpkt->buf);
|
|
if (err < 0)
|
|
return err;
|
|
s->keyframedata = avpkt->data;
|
|
if (s->blocks)
|
|
memset(s->blocks, 0, (v_blocks + !!v_part) * (h_blocks + !!h_part) *
|
|
sizeof(s->blocks[0]));
|
|
}
|
|
if(s->ver == 2 && !s->blocks)
|
|
s->blocks = av_mallocz((v_blocks + !!v_part) * (h_blocks + !!h_part) *
|
|
sizeof(s->blocks[0]));
|
|
|
|
ff_dlog(avctx, "image: %dx%d block: %dx%d num: %dx%d part: %dx%d\n",
|
|
s->image_width, s->image_height, s->block_width, s->block_height,
|
|
h_blocks, v_blocks, h_part, v_part);
|
|
|
|
if ((ret = ff_reget_buffer(avctx, s->frame, 0)) < 0)
|
|
return ret;
|
|
|
|
/* loop over all block columns */
|
|
for (j = 0; j < v_blocks + (v_part ? 1 : 0); j++) {
|
|
|
|
int y_pos = j * s->block_height; // vertical position in frame
|
|
int cur_blk_height = (j < v_blocks) ? s->block_height : v_part;
|
|
|
|
/* loop over all block rows */
|
|
for (i = 0; i < h_blocks + (h_part ? 1 : 0); i++) {
|
|
int x_pos = i * s->block_width; // horizontal position in frame
|
|
int cur_blk_width = (i < h_blocks) ? s->block_width : h_part;
|
|
int has_diff = 0;
|
|
|
|
/* get the size of the compressed zlib chunk */
|
|
int size = get_bits(&gb, 16);
|
|
|
|
s->color_depth = 0;
|
|
s->zlibprime_curr = 0;
|
|
s->zlibprime_prev = 0;
|
|
s->diff_start = 0;
|
|
s->diff_height = cur_blk_height;
|
|
|
|
if (8 * size > get_bits_left(&gb)) {
|
|
av_frame_unref(s->frame);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (s->ver == 2 && size) {
|
|
skip_bits(&gb, 3);
|
|
s->color_depth = get_bits(&gb, 2);
|
|
has_diff = get_bits1(&gb);
|
|
s->zlibprime_curr = get_bits1(&gb);
|
|
s->zlibprime_prev = get_bits1(&gb);
|
|
|
|
if (s->color_depth != 0 && s->color_depth != 2) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"%dx%d invalid color depth %d\n",
|
|
i, j, s->color_depth);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (has_diff) {
|
|
if (size < 3) {
|
|
av_log(avctx, AV_LOG_ERROR, "size too small for diff\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
if (!s->keyframe) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Inter frame without keyframe\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
s->diff_start = get_bits(&gb, 8);
|
|
s->diff_height = get_bits(&gb, 8);
|
|
if (s->diff_start + s->diff_height > cur_blk_height) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"Block parameters invalid: %d + %d > %d\n",
|
|
s->diff_start, s->diff_height, cur_blk_height);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
av_log(avctx, AV_LOG_DEBUG,
|
|
"%dx%d diff start %d height %d\n",
|
|
i, j, s->diff_start, s->diff_height);
|
|
size -= 2;
|
|
}
|
|
|
|
if (s->zlibprime_prev)
|
|
av_log(avctx, AV_LOG_DEBUG, "%dx%d zlibprime_prev\n", i, j);
|
|
|
|
if (s->zlibprime_curr) {
|
|
int col = get_bits(&gb, 8);
|
|
int row = get_bits(&gb, 8);
|
|
av_log(avctx, AV_LOG_DEBUG, "%dx%d zlibprime_curr %dx%d\n",
|
|
i, j, col, row);
|
|
if (size < 3) {
|
|
av_log(avctx, AV_LOG_ERROR, "size too small for zlibprime_curr\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
size -= 2;
|
|
avpriv_request_sample(avctx, "zlibprime_curr");
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
if (!s->blocks && (s->zlibprime_curr || s->zlibprime_prev)) {
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"no data available for zlib priming\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
size--; // account for flags byte
|
|
}
|
|
|
|
if (has_diff) {
|
|
int k;
|
|
int off = (s->image_height - y_pos - 1) * s->frame->linesize[0];
|
|
|
|
for (k = 0; k < cur_blk_height; k++) {
|
|
int x = off - k * s->frame->linesize[0] + x_pos * 3;
|
|
memcpy(s->frame->data[0] + x, s->keyframe + x,
|
|
cur_blk_width * 3);
|
|
}
|
|
}
|
|
|
|
/* skip unchanged blocks, which have size 0 */
|
|
if (size) {
|
|
if (flashsv_decode_block(avctx, avpkt, &gb, size,
|
|
cur_blk_width, cur_blk_height,
|
|
x_pos, y_pos,
|
|
i + j * (h_blocks + !!h_part)))
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
"error in decompression of block %dx%d\n", i, j);
|
|
}
|
|
}
|
|
}
|
|
if (s->is_keyframe && s->ver == 2) {
|
|
if (!s->keyframe) {
|
|
s->keyframe = av_malloc(s->frame->linesize[0] * avctx->height);
|
|
if (!s->keyframe) {
|
|
av_log(avctx, AV_LOG_ERROR, "Cannot allocate image data\n");
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
}
|
|
memcpy(s->keyframe, s->frame->data[0],
|
|
s->frame->linesize[0] * avctx->height);
|
|
}
|
|
|
|
if ((ret = av_frame_ref(rframe, s->frame)) < 0)
|
|
return ret;
|
|
|
|
*got_frame = 1;
|
|
|
|
if ((get_bits_count(&gb) / 8) != buf_size)
|
|
av_log(avctx, AV_LOG_ERROR, "buffer not fully consumed (%d != %d)\n",
|
|
buf_size, (get_bits_count(&gb) / 8));
|
|
|
|
/* report that the buffer was completely consumed */
|
|
return buf_size;
|
|
}
|
|
|
|
#if CONFIG_FLASHSV_DECODER
|
|
const FFCodec ff_flashsv_decoder = {
|
|
.p.name = "flashsv",
|
|
CODEC_LONG_NAME("Flash Screen Video v1"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_FLASHSV,
|
|
.priv_data_size = sizeof(FlashSVContext),
|
|
.init = flashsv_decode_init,
|
|
.close = flashsv_decode_end,
|
|
FF_CODEC_DECODE_CB(flashsv_decode_frame),
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
|
|
.p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_BGR24, AV_PIX_FMT_NONE },
|
|
};
|
|
#endif /* CONFIG_FLASHSV_DECODER */
|
|
|
|
#if CONFIG_FLASHSV2_DECODER
|
|
static const uint32_t ff_flashsv2_default_palette[128] = {
|
|
0x000000, 0x333333, 0x666666, 0x999999, 0xCCCCCC, 0xFFFFFF,
|
|
0x330000, 0x660000, 0x990000, 0xCC0000, 0xFF0000, 0x003300,
|
|
0x006600, 0x009900, 0x00CC00, 0x00FF00, 0x000033, 0x000066,
|
|
0x000099, 0x0000CC, 0x0000FF, 0x333300, 0x666600, 0x999900,
|
|
0xCCCC00, 0xFFFF00, 0x003333, 0x006666, 0x009999, 0x00CCCC,
|
|
0x00FFFF, 0x330033, 0x660066, 0x990099, 0xCC00CC, 0xFF00FF,
|
|
0xFFFF33, 0xFFFF66, 0xFFFF99, 0xFFFFCC, 0xFF33FF, 0xFF66FF,
|
|
0xFF99FF, 0xFFCCFF, 0x33FFFF, 0x66FFFF, 0x99FFFF, 0xCCFFFF,
|
|
0xCCCC33, 0xCCCC66, 0xCCCC99, 0xCCCCFF, 0xCC33CC, 0xCC66CC,
|
|
0xCC99CC, 0xCCFFCC, 0x33CCCC, 0x66CCCC, 0x99CCCC, 0xFFCCCC,
|
|
0x999933, 0x999966, 0x9999CC, 0x9999FF, 0x993399, 0x996699,
|
|
0x99CC99, 0x99FF99, 0x339999, 0x669999, 0xCC9999, 0xFF9999,
|
|
0x666633, 0x666699, 0x6666CC, 0x6666FF, 0x663366, 0x669966,
|
|
0x66CC66, 0x66FF66, 0x336666, 0x996666, 0xCC6666, 0xFF6666,
|
|
0x333366, 0x333399, 0x3333CC, 0x3333FF, 0x336633, 0x339933,
|
|
0x33CC33, 0x33FF33, 0x663333, 0x993333, 0xCC3333, 0xFF3333,
|
|
0x003366, 0x336600, 0x660033, 0x006633, 0x330066, 0x663300,
|
|
0x336699, 0x669933, 0x993366, 0x339966, 0x663399, 0x996633,
|
|
0x6699CC, 0x99CC66, 0xCC6699, 0x66CC99, 0x9966CC, 0xCC9966,
|
|
0x99CCFF, 0xCCFF99, 0xFF99CC, 0x99FFCC, 0xCC99FF, 0xFFCC99,
|
|
0x111111, 0x222222, 0x444444, 0x555555, 0xAAAAAA, 0xBBBBBB,
|
|
0xDDDDDD, 0xEEEEEE
|
|
};
|
|
|
|
static av_cold int flashsv2_decode_init(AVCodecContext *avctx)
|
|
{
|
|
FlashSVContext *s = avctx->priv_data;
|
|
int ret;
|
|
|
|
ret = flashsv_decode_init(avctx);
|
|
if (ret < 0)
|
|
return ret;
|
|
s->pal = ff_flashsv2_default_palette;
|
|
s->ver = 2;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int flashsv2_decode_end(AVCodecContext *avctx)
|
|
{
|
|
FlashSVContext *s = avctx->priv_data;
|
|
|
|
av_buffer_unref(&s->keyframedata_buf);
|
|
s->keyframedata = NULL;
|
|
av_freep(&s->blocks);
|
|
av_freep(&s->keyframe);
|
|
flashsv_decode_end(avctx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
const FFCodec ff_flashsv2_decoder = {
|
|
.p.name = "flashsv2",
|
|
CODEC_LONG_NAME("Flash Screen Video v2"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_FLASHSV2,
|
|
.priv_data_size = sizeof(FlashSVContext),
|
|
.init = flashsv2_decode_init,
|
|
.close = flashsv2_decode_end,
|
|
FF_CODEC_DECODE_CB(flashsv_decode_frame),
|
|
.p.capabilities = AV_CODEC_CAP_DR1,
|
|
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
|
|
.p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_BGR24, AV_PIX_FMT_NONE },
|
|
};
|
|
#endif /* CONFIG_FLASHSV2_DECODER */
|