38 unsigned int chunk_id = 0, chunk_arg = 0;
39 unsigned long chunk_size = 0;
40 int i, j, k, nv1, nv2, vqflg = 0, vqflg_pos = -1;
41 int vqid, xpos, ypos, xp, yp, x, y, mx, my;
46 chunk_id = bytestream2_get_le16(gb);
47 chunk_size = bytestream2_get_le32(gb);
48 chunk_arg = bytestream2_get_le16(gb);
53 if((nv1 = chunk_arg >> 8) == 0)
55 if((nv2 = chunk_arg & 0xff) == 0 && nv1 * 6 < chunk_size)
57 for(
i = 0;
i < nv1;
i++) {
58 ri->
cb2x2[
i].
y[0] = bytestream2_get_byte(gb);
59 ri->
cb2x2[
i].
y[1] = bytestream2_get_byte(gb);
60 ri->
cb2x2[
i].
y[2] = bytestream2_get_byte(gb);
61 ri->
cb2x2[
i].
y[3] = bytestream2_get_byte(gb);
62 ri->
cb2x2[
i].
u = bytestream2_get_byte(gb);
63 ri->
cb2x2[
i].
v = bytestream2_get_byte(gb);
65 for(
i = 0;
i < nv2;
i++)
66 for(j = 0; j < 4; j++)
67 ri->
cb4x4[
i].
idx[j] = bytestream2_get_byte(gb);
80 for (yp = ypos; yp < ypos + 16; yp += 8)
81 for (xp = xpos; xp < xpos + 16; xp += 8) {
87 vqflg = bytestream2_get_le16(gb);
90 vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
97 int byte = bytestream2_get_byte(gb);
98 mx = 8 - (
byte >> 4) - ((
signed char) (chunk_arg >> 8));
99 my = 8 - (
byte & 0xf) - ((
signed char) chunk_arg);
104 qcell = ri->
cb4x4 + bytestream2_get_byte(gb);
111 for (k = 0; k < 4; k++) {
121 vqflg = bytestream2_get_le16(gb);
124 vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
130 int byte = bytestream2_get_byte(gb);
131 mx = 8 - (
byte >> 4) - ((
signed char) (chunk_arg >> 8));
132 my = 8 - (
byte & 0xf) - ((
signed char) chunk_arg);
137 qcell = ri->
cb4x4 + bytestream2_get_byte(gb);
158 if (xpos >= ri->
width) {
184 if (!
s->current_frame || !
s->last_frame)
194 void *
data,
int *got_frame,
198 int buf_size = avpkt->
size;
200 int copy = !
s->current_frame->data[0] &&
s->last_frame->data[0];
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Libavcodec external API header.
static av_cold int init(AVCodecContext *avctx)
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
static av_always_inline int bytestream2_tell(GetByteContext *g)
#define FFSWAP(type, a, b)
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Identical in function to ff_get_buffer(), except it reuses the existing buffer if available.
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
#define AV_LOG_VERBOSE
Detailed information.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
@ AVCOL_RANGE_JPEG
Full range content.
@ AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell)
void ff_apply_motion_4x4(RoqContext *ri, int x, int y, int deltax, int deltay)
void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell)
void ff_apply_motion_8x8(RoqContext *ri, int x, int y, int deltax, int deltay)
#define RoQ_QUAD_CODEBOOK
static av_cold int roq_decode_end(AVCodecContext *avctx)
static void roqvideo_decode_frame(RoqContext *ri, GetByteContext *gb)
static int roq_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static av_cold int roq_decode_init(AVCodecContext *avctx)
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.
const char * name
Name of the codec implementation.
This structure describes decoded (raw) audio or video data.
This structure stores compressed data.
#define avpriv_request_sample(...)
static void copy(const float *p1, float *p2, const int length)
static int chunk_start(AVFormatContext *s)