36 #define CACHED_BITSTREAM_READER HAVE_FAST_64BIT
37 #define UNCHECKED_BITSTREAM_READER 1
46 #define FPS_TAG MKTAG('F', 'P', 'S', 'x')
81 static int huff_cmp(
const void *va,
const void *vb)
83 const Node *
a = va, *
b = vb;
84 return (
a->count -
b->count)*256 +
a->sym -
b->sym;
99 for (
i = 0;
i < 256;
i++)
100 nodes[
i].count = bytestream_get_le32(&
src);
109 s->bdsp.bswap_buf((uint32_t *)
s->tmpbuf,
110 (
const uint32_t *)
src,
size >> 2);
115 for (j = 0; j <
h; j++) {
116 for (
i = 0;
i <
w*step;
i += step) {
137 void *
data,
int *got_frame,
142 int buf_size = avpkt->
size;
146 unsigned int version,header_size;
148 const uint32_t *buf32;
149 uint32_t *luma1,*luma2,*
cb,*
cr;
151 int i, j, ret, is_chroma;
163 is_pal = buf[1] == 2 &&
version == 1;
164 header_size = (
header & (1<<30))? 8 : 4;
174 unsigned needed_size = avctx->
width * avctx->
height + 1024;
175 needed_size += header_size;
176 if (buf_size != needed_size) {
178 "Invalid frame length %d (should be %d)\n",
179 buf_size, needed_size);
183 unsigned needed_size = avctx->
width * avctx->
height * 3;
184 if (
version == 0) needed_size /= 2;
185 needed_size += header_size;
191 if (buf_size != needed_size) {
193 "Invalid frame length %d (should be %d)\n",
194 buf_size, needed_size);
209 if (offs[
i] >= buf_size - header_size || (
i && offs[
i] <= offs[
i - 1] + 1024)) {
214 offs[
planes] = buf_size - header_size;
237 if (((avctx->
width % 8) != 0) || ((avctx->
height % 2) != 0)) {
243 buf32 = (
const uint32_t*)buf;
244 for (y = 0; y < avctx->
height / 2; y++) {
245 luma1 = (uint32_t*)&
f->data[0][ y * 2 *
f->linesize[0] ];
246 luma2 = (uint32_t*)&
f->data[0][ (y * 2 + 1) *
f->linesize[0] ];
247 cr = (uint32_t*)&
f->data[1][ y *
f->linesize[1] ];
248 cb = (uint32_t*)&
f->data[2][ y *
f->linesize[2] ];
249 for (x = 0; x < avctx->
width; x += 8) {
262 uint32_t *pal = (uint32_t *)
f->data[1];
264 for (y = 0; y < 256; y++) {
265 pal[y] =
AV_RL32(buf) | 0xFF000000;
269 for (y = 0; y <avctx->
height; y++)
270 memcpy(&
f->data[0][y *
f->linesize[0]],
271 &buf[y * avctx->
width],
275 for (y = 0; y<avctx->
height; y++)
276 memcpy(&
f->data[0][(avctx->
height - y - 1) *
f->linesize[0]],
277 &buf[y * avctx->
width * 3],
291 avctx->
width >> is_chroma,
292 avctx->
height >> is_chroma,
293 buf + offs[
i], offs[
i + 1] - offs[
i],
294 is_chroma, 1)) < 0) {
306 buf + offs[
i], offs[
i + 1] - offs[
i], 0, 3)) < 0) {
313 for (j = 0; j < avctx->
height; j++) {
315 while (
out < line_end) {
Libavcodec external API header.
static av_cold int init(AVCodecContext *avctx)
void ff_free_vlc(VLC *vlc)
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
static int huff_cmp(const void *va, const void *vb)
Comparator - our nodes should ascend by count but with preserved symbol order.
static av_cold int decode_init(AVCodecContext *avctx)
initializes decoder
static av_cold int decode_end(AVCodecContext *avctx)
closes decoder
static int fraps2_decode_plane(FrapsContext *s, uint8_t *dst, int stride, int w, int h, const uint8_t *src, int size, int Uoff, const int step)
decode Fraps v2 packed plane
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
bitstream reader API header.
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
static int get_bits_left(GetBitContext *gb)
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional AV_INPUT_BUFFER_PADDING_SIZE at the end w...
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
@ AV_PICTURE_TYPE_I
Intra.
int ff_huff_build_tree(AVCodecContext *avctx, VLC *vlc, int nb_codes, int nb_bits, Node *nodes, HuffCmp cmp, int flags)
nodes size must be 2*nb_codes first nb_codes nodes.count must be set
huffman tree builder and VLC generator
#define FF_HUFFMAN_FLAG_ZERO_COUNT
av_cold void ff_bswapdsp_init(BswapDSPContext *c)
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
static const struct @322 planes[]
@ AVCOL_RANGE_UNSPECIFIED
@ AVCOL_RANGE_JPEG
Full range content.
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
@ AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
@ AVCOL_SPC_BT709
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
FF_ENABLE_DEPRECATION_WARNINGS int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
static const uint8_t header[24]
main external API structure.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
int width
picture width / height.
enum AVColorRange color_range
MPEG vs JPEG YUV range.
enum AVColorSpace colorspace
YUV colorspace type.
const char * name
Name of the codec implementation.
This structure describes decoded (raw) audio or video data.
This structure stores compressed data.
VLC_TYPE(* table)[2]
code, bits
static double cr(void *priv, double x, double y)
static double cb(void *priv, double x, double y)