84 n = (chunk_id & 0x04) ? 4 : 6;
88 for (i=0; i < 256; i++) {
89 if ((chunk_id & 0x01) && !(mask >>= 1)) {
98 if (!(chunk_id & 0x01) || (flag & mask)) {
103 codebook[i].
y0 = *data++;
104 codebook[i].
y1 = *data++;
105 codebook[i].
y2 = *data++;
106 codebook[i].
y3 = *data++;
107 codebook[i].
u = 128 + *data++;
108 codebook[i].
v = 128 + *data++;
114 codebook[i].
y0 = *data++;
115 codebook[i].
y1 = *data++;
116 codebook[i].
y2 = *data++;
117 codebook[i].
y3 = *data++;
139 for (y=strip->
y1; y < strip->y2; y+=4) {
150 for (x=strip->
x1; x < strip->x2; x+=4) {
151 if ((chunk_id & 0x01) && !(mask >>= 1)) {
152 if ((data + 4) > eod)
160 if (!(chunk_id & 0x01) || (flag & mask)) {
161 if (!(chunk_id & 0x02) && !(mask >>= 1)) {
162 if ((data + 4) > eod)
170 if ((chunk_id & 0x02) || (~flag & mask)) {
211 }
else if (flag & mask) {
212 if ((data + 4) > eod)
258 iy[0] += 4; iy[1] += 4;
259 iy[2] += 4; iy[3] += 4;
260 iu[0] += 2; iu[1] += 2;
261 iv[0] += 2; iv[1] += 2;
272 int chunk_id, chunk_size;
277 strip->
x1 >= strip->
x2 || strip->
y1 >= strip->
y2)
280 while ((data + 4) <= eod) {
282 chunk_size =
AV_RB24 (&data[1]) - 4;
287 chunk_size = ((data + chunk_size) > eod) ? (eod -
data) : chunk_size;
323 int i, result, strip_size, frame_flags, num_strips;
325 int encoded_buf_size;
330 frame_flags = s->
data[0];
336 if (!encoded_buf_size) {
340 if (encoded_buf_size != s->
size && (s->
size % encoded_buf_size) != 0) {
348 (s->
data[10] == 0xFE) &&
349 (s->
data[11] == 0x00) &&
350 (s->
data[12] == 0x00) &&
351 (s->
data[13] == 0x06) &&
352 (s->
data[14] == 0x00) &&
353 (s->
data[15] == 0x00))
365 for (i=0; i < num_strips; i++) {
366 if ((s->
data + 12) > eod)
379 strip_size = ((s->
data + strip_size) > eod) ? (eod - s->
data) : strip_size;
381 if ((i > 0) && !(frame_flags & 0x01)) {
393 s->
data += strip_size;
425 void *
data,
int *got_frame,
429 int ret = 0, buf_size = avpkt->
size;
cvid_strip strips[MAX_STRIPS]
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
cvid_codebook v4_codebook[256]
static int cinepak_decode(CinepakContext *s)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
AVCodec ff_cinepak_decoder
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
static int cinepak_decode_strip(CinepakContext *s, cvid_strip *strip, const uint8_t *data, int size)
static int cinepak_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
8 bit with PIX_FMT_RGB32 palette
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static const uint16_t mask[17]
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#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 ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buf...
int width
picture width / height.
static int cinepak_decode_vectors(CinepakContext *s, cvid_strip *strip, int chunk_id, int size, const uint8_t *data)
#define AVERROR_PATCHWELCOME
Not yet implemented in Libav, patches welcome.
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
static void close(AVCodecParserContext *s)
static av_cold int cinepak_decode_init(AVCodecContext *avctx)
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.
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
common internal api header.
common internal and external API header
cvid_codebook v1_codebook[256]
static av_cold int init(AVCodecParserContext *s)
uint8_t * av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
This structure stores compressed data.
static av_cold int cinepak_decode_end(AVCodecContext *avctx)