40 #define FPS_TAG MKTAG('F', 'P', 'S', 'x')
78 static int huff_cmp(
const void *va,
const void *vb){
79 const Node *
a = va, *
b = vb;
80 return (a->
count - b->count)*256 + a->
sym - b->sym;
95 for(i = 0; i < 256; i++)
96 nodes[i].count = bytestream_get_le32(&src);
107 for(j = 0; j < h; j++){
113 if(j) dst[i] += dst[i -
stride];
114 else if(Uoff) dst[i] += 0x80;
127 void *
data,
int *got_frame,
131 int buf_size = avpkt->
size;
136 unsigned int version,header_size;
138 const uint32_t *buf32;
139 uint32_t *luma1,*luma2,*cb,*cr;
141 int i, j, is_chroma, planes;
143 int prev_pic_bit, expected_size;
151 version = header & 0xff;
152 header_size = (header & (1<<30))? 8 : 4;
153 prev_pic_bit = header & (1
U << 31);
157 "This file is encoded with Fraps version %d. " \
158 "This codec can only decode versions <= 5.\n", version);
163 if (header_size == 8)
172 expected_size = header_size;
179 expected_size += avctx->
width * avctx->
height * 3 / 2;
180 if (buf_size != expected_size) {
182 "Invalid frame length %d (should be %d)\n",
183 buf_size, expected_size);
187 if (( (avctx->
width % 8) != 0) || ( (avctx->
height % 2) != 0 )) {
205 buf32=(
const uint32_t*)buf;
206 for(y=0; y<avctx->
height/2; y++){
211 for(x=0; x<avctx->
width; x+=8){
212 *(luma1++) = *(buf32++);
213 *(luma1++) = *(buf32++);
214 *(luma2++) = *(buf32++);
215 *(luma2++) = *(buf32++);
216 *(cr++) = *(buf32++);
217 *(cb++) = *(buf32++);
227 if (buf_size != expected_size) {
229 "Invalid frame length %d (should be %d)\n",
230 buf_size, expected_size);
246 for(y=0; y<avctx->
height; y++)
248 &buf[y*avctx->
width*3],
280 for(i = 0; i < planes; i++) {
281 offs[i] =
AV_RL32(buf + 4 + i * 4);
282 if(offs[i] >= buf_size || (i && offs[i] <= offs[i - 1] + 1024)) {
287 offs[planes] = buf_size;
288 for(i = 0; i < planes; i++){
291 offs[i + 1] - offs[i] - 1024);
295 avctx->
height >> is_chroma, buf + offs[i], offs[i + 1] - offs[i], is_chroma, 1) < 0) {
325 for(i = 0; i < planes; i++) {
326 offs[i] =
AV_RL32(buf + 4 + i * 4);
327 if(offs[i] >= buf_size || (i && offs[i] <= offs[i - 1] + 1024)) {
332 offs[planes] = buf_size;
333 for(i = 0; i < planes; i++){
335 offs[i + 1] - offs[i] - 1024);
339 avctx->
width, avctx->
height, buf + offs[i], offs[i + 1] - offs[i], 0, 3) < 0) {
345 for(j = 0; j < avctx->
height; j++){
346 for(i = 0; i < avctx->
width; i++){
av_cold void ff_dsputil_init(DSPContext *c, AVCodecContext *avctx)
This structure describes decoded (raw) audio or video data.
int buffer_hints
codec suggestion on buffer type if != 0
void(* release_buffer)(struct AVCodecContext *c, AVFrame *pic)
Called to release buffers which were allocated with get_buffer.
AVFrame * coded_frame
the picture in the bitstream
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer with padding, reusing the given one if large enough.
int ff_huff_build_tree(AVCodecContext *avctx, VLC *vlc, int nb_codes, Node *nodes, HuffCmp cmp, int flags)
nodes size must be 2*nb_codes first nb_codes nodes.count must be set
int(* reget_buffer)(struct AVCodecContext *c, AVFrame *pic)
Called at the beginning of a frame to get cr buffer for it.
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
bitstream reader API header.
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 init(AVCodecParserContext *s)
static int get_bits_left(GetBitContext *gb)
#define FF_HUFFMAN_FLAG_ZERO_COUNT
int reference
is this picture used as reference The values for this are the same as the MpegEncContext.picture_structure variable, that is 1->top field, 2->bottom field, 3->frame/both fields.
void(* bswap_buf)(uint32_t *dst, const uint32_t *src, int w)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
static int huff_cmp(const void *va, const void *vb)
Comparator - our nodes should ascend by count but with preserved symbol order.
enum AVPictureType pict_type
Picture type of the frame, see ?_TYPE below.
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV420P and setting color_...
int width
picture width / height.
static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)
Parse a vlc code.
packed RGB 8:8:8, 24bpp, BGRBGR...
enum AVPixelFormat pix_fmt
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
int linesize[AV_NUM_DATA_POINTERS]
Size, in bytes, of the data for each picture/channel plane.
static av_cold int decode_end(AVCodecContext *avctx)
closes decoder
main external API structure.
static void close(AVCodecParserContext *s)
static av_cold int decode_init(AVCodecContext *avctx)
initializes decoder
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
huffman tree builder and VLC generator
#define FF_BUFFER_HINTS_REUSABLE
struct FrapsContext FrapsContext
local variable storage
#define FF_BUFFER_HINTS_PRESERVE
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
#define AVERROR_INVALIDDATA
VLC_TYPE(* table)[2]
code, bits
int key_frame
1 -> keyframe, 0-> not
#define FF_BUFFER_HINTS_VALID
AVPixelFormat
Pixel format.
This structure stores compressed data.
void ff_free_vlc(VLC *vlc)
if(!(ptr_align%ac->ptr_align)&&samples_align >=aligned_len)