48 16, 11, 10, 16, 24, 40, 51, 61,
49 12, 12, 14, 19, 26, 58, 60, 55,
50 14, 13, 16, 24, 40, 57, 69, 56,
51 14, 17, 22, 29, 51, 87, 80, 62,
52 18, 22, 37, 56, 68, 109, 103, 77,
53 24, 35, 55, 64, 81, 104, 113, 92,
54 49, 64, 78, 87, 103, 121, 120, 101,
55 72, 92, 95, 98, 112, 100, 103, 99
59 17, 18, 24, 47, 99, 99, 99, 99,
60 18, 21, 26, 66, 99, 99, 99, 99,
61 24, 26, 56, 99, 99, 99, 99, 99,
62 47, 66, 99, 99, 99, 99, 99, 99,
63 99, 99, 99, 99, 99, 99, 99, 99,
64 99, 99, 99, 99, 99, 99, 99, 99,
65 99, 99, 99, 99, 99, 99, 99, 99,
66 99, 99, 99, 99, 99, 99, 99, 99
81 f->
format, width, height, 1);
93 if (size < 2 * 64 * 4) {
97 for (i = 0; i < 64; i++, buf += 4)
99 for (i = 0; i < 64; i++, buf += 4)
110 quality =
FFMAX(quality, 1);
111 for (i = 0; i < 64; i++) {
129 int buf_size = height * width * 3 / 2
132 if (buf_size > INT_MAX/8)
142 "Can't allocate decompression buffer.\n");
148 }
else if (quality != c->
quality)
158 int buf_size = avpkt->
size;
161 int orig_size = buf_size;
166 NUV_UNCOMPRESSED =
'0',
168 NUV_RTJPEG_IN_LZO =
'2',
180 if (buf[0] ==
'D' && buf[1] ==
'R') {
185 ret =
get_quant(avctx, c, buf, buf_size);
192 if (buf_size < 12 || buf[0] !=
'V') {
198 case NUV_RTJPEG_IN_LZO:
213 if (comptype == NUV_RTJPEG_IN_LZO || comptype == NUV_LZO) {
215 int inlen = buf_size;
233 if (buf[0] !=
'V' &&
AV_RL16(&buf[4]) != 0x000c) {
244 buf_size = avpkt->
size;
252 if (size_change || keyframe) {
270 case NUV_UNCOMPRESSED: {
272 if (buf_size < c->
width * height * 3 / 2) {
274 height = buf_size / c->
width / 3 * 2;
280 case NUV_RTJPEG_IN_LZO:
static av_cold int decode_end(AVCodecContext *avctx)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static av_cold int init(AVCodecContext *avctx)
int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4], const uint8_t *src, enum AVPixelFormat pix_fmt, int width, int height, int align)
Setup the data pointers and linesizes based on the specified image parameters and the provided array...
static int get_quant(AVCodecContext *avctx, NuvContext *c, const uint8_t *buf, int size)
extract quantization tables from codec data into our context
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
static void get_quant_quality(NuvContext *c, int quality)
set quantization tables from a quality value
static const uint8_t fallback_lquant[]
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
int ff_rtjpeg_decode_frame_yuv420(RTJpegContext *c, AVFrame *f, const uint8_t *buf, int buf_size)
decode one rtjpeg YUV420 frame
void ff_rtjpeg_init(RTJpegContext *c, AVCodecContext *avctx)
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
#define AV_LZO_OUTPUT_PADDING
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
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. ...
const char * name
Name of the codec implementation.
void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], const uint8_t *src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)
Copy image in src_data to dst_data.
static av_cold int decode_init(AVCodecContext *avctx)
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer, reusing the given one if large enough.
unsigned char * decomp_buf
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
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...
enum AVPictureType pict_type
Picture type of the frame.
int width
picture width / height.
void ff_rtjpeg_decode_init(RTJpegContext *c, int width, int height, const uint32_t *lquant, const uint32_t *cquant)
initialize an RTJpegContext, may be called multiple times
int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen)
Decodes LZO 1x compressed data.
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
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 copy_frame(AVFrame *f, const uint8_t *src, int width, int height)
copy frame data from buffer to AVFrame, handling stride.
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static const uint8_t fallback_cquant[]
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
common internal api header.
common internal and external API header
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
static int codec_reinit(AVCodecContext *avctx, int width, int height, int quality)
#define RTJPEG_HEADER_SIZE
int key_frame
1 -> keyframe, 0-> not
int frame_number
Frame counter, set by libavcodec.
static void init_frame(FlacEncodeContext *s, int nb_samples)
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
#define MKTAG(a, b, c, d)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
This structure stores compressed data.
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.