24 #ifndef AVCODEC_INTERNAL_H
25 #define AVCODEC_INTERNAL_H
41 #define FF_CODEC_CAP_INIT_THREADSAFE (1 << 0)
49 #define FF_CODEC_CAP_INIT_CLEANUP (1 << 1)
56 #define FF_CODEC_CAP_SETS_PKT_DTS (1 << 2)
61 #define FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM (1 << 3)
67 #define FF_CODEC_CAP_EXPORTS_CROPPING (1 << 4)
71 #define FF_CODEC_CAP_SLICE_THREAD_HAS_MF (1 << 5)
76 #define FF_CODEC_CAP_ALLOCATE_PROGRESS (1 << 6)
80 #define FF_CODEC_CAP_AUTO_THREADS (1 << 7)
85 #define FF_CODEC_CAP_SETS_FRAME_PROPS (1 << 8)
90 #define FF_CODEC_TAGS_END -1
94 # define ff_tlog(ctx, ...) av_log(ctx, AV_LOG_TRACE, __VA_ARGS__)
96 # define ff_tlog(ctx, ...) do { } while(0)
100 #define FF_DEFAULT_QUANT_BIAS 999999
102 #define FF_QSCALE_TYPE_MPEG1 0
103 #define FF_QSCALE_TYPE_MPEG2 1
104 #define FF_QSCALE_TYPE_H264 2
105 #define FF_QSCALE_TYPE_VP56 3
107 #define FF_SANE_NB_CHANNELS 512U
109 #define FF_SIGNBIT(x) ((x) >> CHAR_BIT * sizeof(x) - 1)
111 #if HAVE_SIMD_ALIGN_64
112 # define STRIDE_ALIGN 64
113 #elif HAVE_SIMD_ALIGN_32
114 # define STRIDE_ALIGN 32
115 #elif HAVE_SIMD_ALIGN_16
116 # define STRIDE_ALIGN 16
118 # define STRIDE_ALIGN 8
144 #if FF_API_OLD_ENCDEC
194 #if FF_API_OLD_ENCDEC
244 #define FF_MAX_EXTRADATA_SIZE ((1 << 28) - AV_INPUT_BUFFER_PADDING_SIZE)
292 if (-126 <= x && x <= 128)
312 #define FF_REGET_BUFFER_FLAG_READONLY 1
379 void **
data,
size_t *sei_size);
397 const int * array_valid_values,
int default_value);
401 #if defined(_WIN32) && CONFIG_SHARED && !defined(BUILDING_avcodec)
402 # define av_export_avcodec __declspec(dllimport)
404 # define av_export_avcodec
static double val(void *priv, double ch)
Libavcodec external API header.
refcounted data buffer API
#define flags(name, subs,...)
audio channel layout utility functions
a very simple circular buffer FIFO implementation
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
#define AV_NOPTS_VALUE
Undefined timestamp value.
static av_always_inline float av_int2float(uint32_t i)
Reinterpret a 32-bit integer as a float.
void ff_color_frame(AVFrame *frame, const int color[4])
int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec)
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static av_always_inline float ff_exp2fi(int x)
2^(x) for integer x
int ff_side_data_update_matrix_encoding(AVFrame *frame, enum AVMatrixEncoding matrix_encoding)
Add or update AV_FRAME_DATA_MATRIXENCODING side data.
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.
void ff_dvdsub_parse_palette(uint32_t *palette, const char *p)
int ff_int_from_list_or_default(void *ctx, const char *val_name, int val, const int *array_valid_values, int default_value)
Check if a value is in the list.
const uint8_t * avpriv_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state)
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
int ff_set_sar(AVCodecContext *avctx, AVRational sar)
Check that the provided sample aspect ratio is valid and set it on the codec context.
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
AVCPBProperties * ff_add_cpb_side_data(AVCodecContext *avctx)
Add a CPB properties side data to an encoding context.
static av_always_inline int64_t ff_samples_to_time_base(AVCodecContext *avctx, int64_t samples)
Rescale from sample rate to AVCodecContext.time_base.
int ff_alloc_timecode_sei(const AVFrame *frame, AVRational rate, size_t prefix_len, void **data, size_t *sei_size)
Check AVFrame for S12M timecode side data and allocate and fill TC SEI message with timecode info.
int64_t ff_guess_coded_bitrate(AVCodecContext *avctx)
Get an estimated video bitrate based on frame size, frame rate and coded bits per pixel.
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
unsigned int avpriv_toupper4(unsigned int x)
int ff_thread_can_start_frame(AVCodecContext *avctx)
int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
Return the index into tab at which {a,b} match elements {[0],[1]} of tab.
const uint8_t ff_log2_run[41]
int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx)
AVPixelFormat
Pixel format.
The bitstream filter state.
A reference to a data buffer.
This structure describes the bitrate properties of an encoded bitstream.
main external API structure.
int sample_rate
samples per second
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
int is_copy
Whether the parent AVCodecContext is a copy of the context which had init() called on it.
size_t compat_decode_consumed
AVPacket * last_pkt_props
Properties (timestamps+side data) extracted from the last packet passed for decoding.
unsigned int byte_buffer_size
uint8_t * byte_buffer
temporary buffer used for encoders to store their bitstream
uint64_t initial_channel_layout
int last_audio_frame
An audio frame with less than required samples has been submitted and padded with silence.
int changed_frames_dropped
void * hwaccel_priv_data
hwaccel-specific private data
size_t compat_decode_partial_size
AVPacket * buffer_pkt
buffers for using new encode/decode API through legacy API
int skip_samples_multiplier
int draining
checks API usage: after codec draining, flush is required to resume operation
AVFrame * compat_decode_frame
void * frame_thread_encoder
int skip_samples
Number of audio samples to skip at the start of the next decoded frame.
AVPacket * compat_encode_packet
int showed_multi_packet_warning
This structure describes decoded (raw) audio or video data.
This structure stores compressed data.
Rational number (pair of numerator and denominator).
static const struct twinvq_data tab