30 #define SGI_SINGLE_CHAN 2 31 #define SGI_MULTI_CHAN 3 41 if (avctx->
width > 65535 || avctx->
height > 65535) {
43 "SGI does not support resolutions above 65535x65535\n",
58 bytestream2_put = bytestream2_put_byte;
60 bytestream2_put = bytestream2_put_be16;
62 for (x = 0; x <
w; x +=
count) {
69 val = bpp == 1 ? *src :
AV_RB16(src);
70 bytestream2_put(pbc, count);
71 bytestream2_put(pbc, val);
79 bytestream2_put(pbc, count + 0x80);
80 for (i = 0; i <
count; i++) {
81 val = bpp == 1 ? src[
i] :
AV_RB16(src + i * bpp);
82 bytestream2_put(pbc, val);
101 unsigned int bytes_per_channel, pixmax, put_be;
103 #if FF_API_CODED_FRAME 110 #if FF_API_CODER_TYPE 117 width = avctx->
width;
119 bytes_per_channel = 1;
121 put_be = HAVE_BIGENDIAN;
137 put_be = !HAVE_BIGENDIAN;
139 bytes_per_channel = 2;
145 put_be = !HAVE_BIGENDIAN;
147 bytes_per_channel = 2;
153 put_be = !HAVE_BIGENDIAN;
155 bytes_per_channel = 2;
164 tablesize = depth * height * 4;
167 length += depth * height *
width;
169 length += tablesize * 2 + depth * height * (2 * width + 1);
171 if ((ret =
ff_alloc_packet2(avctx, pkt, bytes_per_channel * length, 0)) < 0)
178 bytestream2_put_byte(&pbc, s->
rle);
179 bytestream2_put_byte(&pbc, bytes_per_channel);
180 bytestream2_put_be16(&pbc, dimension);
181 bytestream2_put_be16(&pbc, width);
182 bytestream2_put_be16(&pbc, height);
183 bytestream2_put_be16(&pbc, depth);
185 bytestream2_put_be32(&pbc, 0
L);
186 bytestream2_put_be32(&pbc, pixmax);
187 bytestream2_put_be32(&pbc, 0
L);
190 for (i = 0; i < 80; i++)
191 bytestream2_put_byte(&pbc, 0
L);
194 bytestream2_put_be32(&pbc, 0
L);
197 for (i = 0; i < 404; i++)
198 bytestream2_put_byte(&pbc, 0
L);
212 if (!(encode_buf =
av_malloc(width * bytes_per_channel)))
215 for (z = 0; z < depth; z++) {
216 in_buf = p->
data[0] + p->
linesize[0] * (height - 1) + z * bytes_per_channel;
218 for (y = 0; y <
height; y++) {
221 for (x = 0; x < width * bytes_per_channel; x += bytes_per_channel)
222 if (bytes_per_channel == 1) {
223 encode_buf[x] = in_buf[depth * x];
224 }
else if (HAVE_BIGENDIAN ^ put_be) {
225 encode_buf[x + 1] = in_buf[depth * x];
226 encode_buf[x] = in_buf[depth * x + 1];
228 encode_buf[x] = in_buf[depth * x];
229 encode_buf[x + 1] = in_buf[depth * x + 1];
239 bytestream2_put_be32(&tablen_pcb, length);
246 for (z = 0; z < depth; z++) {
247 in_buf = p->
data[0] + p->
linesize[0] * (height - 1) + z * bytes_per_channel;
249 for (y = 0; y <
height; y++) {
250 for (x = 0; x < width * depth; x += depth)
251 if (bytes_per_channel == 1)
252 bytestream2_put_byte(&pbc, in_buf[x]);
255 bytestream2_put_be16(&pbc, ((uint16_t *)in_buf)[x]);
257 bytestream2_put_le16(&pbc, ((uint16_t *)in_buf)[x]);
272 #define OFFSET(x) offsetof(SgiContext, x) 273 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM 293 .priv_class = &sgi_class,
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static const AVClass sgi_class
This structure describes decoded (raw) audio or video data.
int ff_rle_count_pixels(const uint8_t *start, int len, int bpp, int same)
Count up to 127 consecutive pixels which are either all the same or all differ from the previous and ...
#define LIBAVUTIL_VERSION_INT
packed RGB 8:8:8, 24bpp, RGBRGB...
static av_cold int init(AVCodecContext *avctx)
static av_always_inline void bytestream2_init_writer(PutByteContext *p, uint8_t *buf, int buf_size)
const char * av_default_item_name(void *ptr)
Return the context name.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
static const AVOption options[]
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as lit...
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...
static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
The official guide to swscale for confused that consecutive non overlapping rectangles of dimension(0, slice_top)-(picture_width
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static av_always_inline int bytestream2_get_bytes_left_p(PutByteContext *p)
#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.
static av_always_inline int bytestream2_tell_p(PutByteContext *p)
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
int flags
A combination of AV_PKT_FLAG values.
static av_always_inline void bytestream2_skip_p(PutByteContext *p, unsigned int size)
enum AVPictureType pict_type
Picture type of the frame.
int width
picture width / height.
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
static av_cold int encode_init(AVCodecContext *avctx)
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
attribute_deprecated int coder_type
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
Describe the class of an AVClass context structure.
static enum AVPixelFormat pix_fmts[]
static int sgi_rle_encode(PutByteContext *pbc, const uint8_t *src, int w, int bpp)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
#define SGI_MAGIC
SGI image file signature.
#define FF_DISABLE_DEPRECATION_WARNINGS
common internal api header.
packed RGB 16:16:16, 48bpp, 16R, 16G, 16B, the 2-byte value for each R/G/B component is stored as big...
#define FF_CODER_TYPE_RAW
attribute_deprecated AVFrame * coded_frame
the picture in the bitstream
#define FF_ENABLE_DEPRECATION_WARNINGS
Y , 16bpp, little-endian.
int key_frame
1 -> keyframe, 0-> not
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
AVPixelFormat
Pixel format.
static double val(void *priv, double ch)
This structure stores compressed data.
packed RGBA 16:16:16:16, 64bpp, 16R, 16G, 16B, 16A, the 2-byte value for each R/G/B/A component is st...