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;
42 int frame_stats[2][4] = {{0},{0}};
47 chunk_id = bytestream2_get_le16(&ri->
gb);
48 chunk_size = bytestream2_get_le32(&ri->
gb);
49 chunk_arg = bytestream2_get_le16(&ri->
gb);
54 if((nv1 = chunk_arg >> 8) == 0)
56 if((nv2 = chunk_arg & 0xff) == 0 && nv1 * 6 < chunk_size)
58 for(i = 0; i < nv1; i++) {
59 ri->
cb2x2[i].
y[0] = bytestream2_get_byte(&ri->
gb);
60 ri->
cb2x2[i].
y[1] = bytestream2_get_byte(&ri->
gb);
61 ri->
cb2x2[i].
y[2] = bytestream2_get_byte(&ri->
gb);
62 ri->
cb2x2[i].
y[3] = bytestream2_get_byte(&ri->
gb);
63 ri->
cb2x2[i].
u = bytestream2_get_byte(&ri->
gb);
64 ri->
cb2x2[i].
v = bytestream2_get_byte(&ri->
gb);
66 for(i = 0; i < nv2; i++)
67 for(j = 0; j < 4; j++)
68 ri->
cb4x4[i].
idx[j] = bytestream2_get_byte(&ri->
gb);
75 for (yp = ypos; yp < ypos + 16; yp += 8)
76 for (xp = xpos; xp < xpos + 16; xp += 8) {
78 vqflg = bytestream2_get_le16(&ri->
gb);
81 vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
82 frame_stats[0][vqid]++;
89 int byte = bytestream2_get_byte(&ri->
gb);
90 mx = 8 - (byte >> 4) - ((
signed char) (chunk_arg >> 8));
91 my = 8 - (byte & 0xf) - ((
signed char) chunk_arg);
96 qcell = ri->
cb4x4 + bytestream2_get_byte(&ri->
gb);
103 for (k = 0; k < 4; k++) {
109 vqflg = bytestream2_get_le16(&ri->
gb);
112 vqid = (vqflg >> (vqflg_pos * 2)) & 0x3;
113 frame_stats[1][vqid]++;
119 int byte = bytestream2_get_byte(&ri->
gb);
120 mx = 8 - (byte >> 4) - ((
signed char) (chunk_arg >> 8));
121 my = 8 - (byte & 0xf) - ((
signed char) chunk_arg);
126 qcell = ri->
cb4x4 + bytestream2_get_byte(&ri->
gb);
147 if (xpos >= ri->
width) {
165 "Dimensions must be a multiple of 16\n");
179 void *
data,
int *data_size,
182 const uint8_t *buf = avpkt->
data;
183 int buf_size = avpkt->
size;
enum PixelFormat pix_fmt
Pixel format, see PIX_FMT_xxx.
void(* release_buffer)(struct AVCodecContext *c, AVFrame *pic)
Called to release buffers which were allocated with get_buffer.
void ff_apply_vector_2x2(RoqContext *ri, int x, int y, roq_cell *cell)
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
four components are given, that's all.
int(* reget_buffer)(struct AVCodecContext *c, AVFrame *pic)
Called at the beginning of a frame to get cr buffer for it.
void av_picture_copy(AVPicture *dst, const AVPicture *src, enum PixelFormat pix_fmt, int width, int height)
Copy image src to dst.
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
#define RoQ_QUAD_CODEBOOK
static void copy(LZOContext *c, int cnt)
Copies bytes from input to output buffer with checking.
void ff_apply_motion_4x4(RoqContext *ri, int x, int y, int deltax, int deltay)
void ff_apply_motion_8x8(RoqContext *ri, int x, int y, int deltax, int deltay)
static int init(AVCodecParserContext *s)
static av_cold int roq_decode_end(AVCodecContext *avctx)
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static void roqvideo_decode_frame(RoqContext *ri)
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.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static av_always_inline unsigned int bytestream2_get_bytes_left(GetByteContext *g)
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
struct RoqContext RoqContext
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
int width
picture width / height.
struct AVFrame AVFrame
Audio Video Frame.
static int roq_decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
#define AVERROR_PATCHWELCOME
Not yet implemented in Libav, patches welcome.
static av_always_inline int bytestream2_tell(GetByteContext *g)
main external API structure.
static void close(AVCodecParserContext *s)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static av_cold int roq_decode_init(AVCodecContext *avctx)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
void ff_apply_vector_4x4(RoqContext *ri, int x, int y, roq_cell *cell)
#define FFSWAP(type, a, b)