42 uint8_t y0, y1, y2,
y3;
75 int chunk_id,
int size,
const uint8_t *
data)
77 const uint8_t *eod = (data +
size);
82 n = (chunk_id & 0x04) ? 4 : 6;
86 for (i=0; i < 256; i++) {
87 if ((chunk_id & 0x01) && !(mask >>= 1)) {
96 if (!(chunk_id & 0x01) || (flag & mask)) {
101 codebook[i].
y0 = *data++;
102 codebook[i].
y1 = *data++;
103 codebook[i].
y2 = *data++;
104 codebook[i].
y3 = *data++;
105 codebook[i].
u = 128 + *data++;
106 codebook[i].
v = 128 + *data++;
112 codebook[i].
y0 = *data++;
113 codebook[i].
y1 = *data++;
114 codebook[i].
y2 = *data++;
115 codebook[i].
y3 = *data++;
124 int chunk_id,
int size,
const uint8_t *
data)
126 const uint8_t *eod = (data +
size);
137 for (y=strip->
y1; y < strip->y2; y+=4) {
148 for (x=strip->
x1; x < strip->x2; x+=4) {
149 if ((chunk_id & 0x01) && !(mask >>= 1)) {
150 if ((data + 4) > eod)
158 if (!(chunk_id & 0x01) || (flag & mask)) {
159 if (!(chunk_id & 0x02) && !(mask >>= 1)) {
160 if ((data + 4) > eod)
168 if ((chunk_id & 0x02) || (~flag & mask)) {
209 }
else if (flag & mask) {
210 if ((data + 4) > eod)
256 iy[0] += 4; iy[1] += 4;
257 iy[2] += 4; iy[3] += 4;
258 iu[0] += 2; iu[1] += 2;
259 iv[0] += 2; iv[1] += 2;
269 const uint8_t *eod = (data +
size);
270 int chunk_id, chunk_size;
275 strip->
x1 >= strip->
x2 || strip->
y1 >= strip->
y2)
278 while ((data + 4) <= eod) {
280 chunk_size =
AV_RB24 (&data[1]) - 4;
285 chunk_size = ((data + chunk_size) > eod) ? (eod -
data) : chunk_size;
320 const uint8_t *eod = (s->
data + s->
size);
321 int i, result, strip_size, frame_flags, num_strips;
323 int encoded_buf_size;
328 frame_flags = s->
data[0];
334 if (!encoded_buf_size) {
338 if (encoded_buf_size != s->
size && (s->
size % encoded_buf_size) != 0) {
346 (s->
data[10] == 0xFE) &&
347 (s->
data[11] == 0x00) &&
348 (s->
data[12] == 0x00) &&
349 (s->
data[13] == 0x06) &&
350 (s->
data[14] == 0x00) &&
351 (s->
data[15] == 0x00))
363 for (i=0; i < num_strips; i++) {
364 if ((s->
data + 12) > eod)
377 strip_size = ((s->
data + strip_size) > eod) ? (eod - s->
data) : strip_size;
379 if ((i > 0) && !(frame_flags & 0x01)) {
391 s->
data += strip_size;
421 void *
data,
int *data_size,
424 const uint8_t *buf = avpkt->
data;
425 int ret = 0, buf_size = avpkt->
size;
enum PixelFormat pix_fmt
Pixel format, see PIX_FMT_xxx.
cvid_strip strips[MAX_STRIPS]
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
AV_WL32 AV_WL24 AV_WL16 AV_WB32 AV_WB24 AV_RB16
#define FF_BUFFER_HINTS_VALID
cvid_codebook v4_codebook[256]
AV_WL32 AV_WL24 AV_WL16 AV_RB32
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.
static int cinepak_decode(CinepakContext *s)
int(* reget_buffer)(struct AVCodecContext *c, AVFrame *pic)
Called at the beginning of a frame to get cr buffer for it.
AVCodec ff_cinepak_decoder
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
static int cinepak_decode_strip(CinepakContext *s, cvid_strip *strip, const uint8_t *data, int size)
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
static int init(AVCodecParserContext *s)
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static const uint16_t mask[17]
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. ...
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
const unsigned char * data
int width
picture width / height.
struct AVFrame AVFrame
Audio Video Frame.
static int cinepak_decode_vectors(CinepakContext *s, cvid_strip *strip, int chunk_id, int size, const uint8_t *data)
#define FF_BUFFER_HINTS_REUSABLE
uint8_t * av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
int linesize[AV_NUM_DATA_POINTERS]
Size, in bytes, of the data for each picture/channel plane.
void av_log_ask_for_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message asking for a sample.
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 cinepak_decode_init(AVCodecContext *avctx)
#define FF_BUFFER_HINTS_PRESERVE
static void cinepak_decode_codebook(cvid_codebook *codebook, int chunk_id, int size, const uint8_t *data)
int palette_has_changed
Tell user application that palette has changed from previous frame.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
AV_WL32 AV_WL24 AV_WL16 AV_WB32 AV_RB24
8 bit with PIX_FMT_RGB32 palette
cvid_codebook v1_codebook[256]
static int cinepak_decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
struct CinepakContext CinepakContext
static av_cold int cinepak_decode_end(AVCodecContext *avctx)