Go to the documentation of this file.
85 const uint8_t *buf = avpkt->
data;
86 int buf_size = avpkt->
size;
98 #if FF_API_PALETTE_HAS_CHANGED
100 s->frame->palette_has_changed =
103 #if FF_API_PALETTE_HAS_CHANGED
114 uint8_t *ptr =
s->frame->data[0];
115 const uint8_t *buf = avpkt->
data + (avctx->
height-1)*istride;
123 for (j = 0; j < avctx->
width - 1; j += 2) {
124 ptr[j+0] = buf[j>>1] >> 4;
125 ptr[j+1] = buf[j>>1] & 0xF;
127 if (avctx->
width & 1)
128 ptr[j+0] = buf[j>>1] >> 4;
130 memcpy(ptr, buf, linesize);
133 ptr +=
s->frame->linesize[0];
#define FF_ENABLE_DEPRECATION_WARNINGS
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
static int msrle_decode_frame(AVCodecContext *avctx, AVFrame *rframe, int *got_frame, AVPacket *avpkt)
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
This structure describes decoded (raw) audio or video data.
@ AV_PIX_FMT_MONOWHITE
Y , 1bpp, 0 is white, 1 is black, in each byte pixels are ordered from the msb to the lsb.
@ AV_PIX_FMT_BGR24
packed RGB 8:8:8, 24bpp, BGRBGR...
AVCodec p
The public AVCodec.
static av_cold int msrle_decode_end(AVCodecContext *avctx)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define FF_CODEC_DECODE_CB(func)
#define CODEC_LONG_NAME(str)
int(* init)(AVBSFContext *ctx)
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
const FFCodec ff_msrle_decoder
static av_cold int msrle_decode_init(AVCodecContext *avctx)
int av_image_get_linesize(enum AVPixelFormat pix_fmt, int width, int plane)
Compute the size of an image line with format pix_fmt and width width for the plane plane.
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
#define i(width, name, range_min, range_max)
uint8_t * extradata
Out-of-band global headers that may be used by some codecs.
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
const char * name
Name of the codec implementation.
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Identical in function to ff_get_buffer(), except it reuses the existing buffer if available.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
main external API structure.
static void msrle_decode_flush(AVCodecContext *avctx)
#define FF_DISABLE_DEPRECATION_WARNINGS
int ff_msrle_decode(AVCodecContext *avctx, AVFrame *pic, int depth, GetByteContext *gb)
Decode stream in MS RLE format into frame.
This structure stores compressed data.
int width
picture width / height.
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int ff_copy_palette(void *dst, const AVPacket *src, void *logctx)
Check whether the side-data of src contains a palette of size AVPALETTE_SIZE; if so,...