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Diffstat (limited to 'libavcodec/avcodec.h')
-rw-r--r--libavcodec/avcodec.h511
1 files changed, 426 insertions, 85 deletions
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 223db9ca75..6c4b63095c 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1,20 +1,20 @@
/*
* copyright (c) 2001 Fabrice Bellard
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -34,6 +34,7 @@
#include "libavutil/log.h"
#include "libavutil/pixfmt.h"
#include "libavutil/rational.h"
+#include "libavutil/audioconvert.h"
#include "libavcodec/version.h"
/**
@@ -87,7 +88,8 @@
*
* If you add a codec ID to this list, add it so that
* 1. no value of a existing codec ID changes (that would break ABI),
- * 2. it is as close as possible to similar codecs.
+ * 2. Give it a value which when taken as ASCII is recognized uniquely by a human as this specific codec.
+ * This ensures that 2 forks can independently add AVCodecIDs without producing conflicts.
*
* After adding new codec IDs, do not forget to add an entry to the codec
* descriptor list and bump libavcodec minor version.
@@ -265,6 +267,22 @@ enum AVCodecID {
AV_CODEC_ID_MTS2,
AV_CODEC_ID_CLLC,
AV_CODEC_ID_MSS2,
+ AV_CODEC_ID_Y41P = MKBETAG('Y','4','1','P'),
+ AV_CODEC_ID_ESCAPE130 = MKBETAG('E','1','3','0'),
+ AV_CODEC_ID_EXR = MKBETAG('0','E','X','R'),
+ AV_CODEC_ID_AVRP = MKBETAG('A','V','R','P'),
+
+ AV_CODEC_ID_G2M = MKBETAG( 0 ,'G','2','M'),
+ AV_CODEC_ID_AVUI = MKBETAG('A','V','U','I'),
+ AV_CODEC_ID_AYUV = MKBETAG('A','Y','U','V'),
+ AV_CODEC_ID_TARGA_Y216 = MKBETAG('T','2','1','6'),
+ AV_CODEC_ID_V308 = MKBETAG('V','3','0','8'),
+ AV_CODEC_ID_V408 = MKBETAG('V','4','0','8'),
+ AV_CODEC_ID_YUV4 = MKBETAG('Y','U','V','4'),
+ AV_CODEC_ID_SANM = MKBETAG('S','A','N','M'),
+ AV_CODEC_ID_PAF_VIDEO = MKBETAG('P','A','F','V'),
+ AV_CODEC_ID_AVRN = MKBETAG('A','V','R','n'),
+ AV_CODEC_ID_CPIA = MKBETAG('C','P','I','A'),
/* various PCM "codecs" */
AV_CODEC_ID_FIRST_AUDIO = 0x10000, ///< A dummy id pointing at the start of audio codecs
@@ -328,6 +346,7 @@ enum AVCodecID {
AV_CODEC_ID_ADPCM_IMA_ISS,
AV_CODEC_ID_ADPCM_G722,
AV_CODEC_ID_ADPCM_IMA_APC,
+ AV_CODEC_ID_VIMA = MKBETAG('V','I','M','A'),
/* AMR */
AV_CODEC_ID_AMR_NB = 0x12000,
@@ -405,7 +424,14 @@ enum AVCodecID {
AV_CODEC_ID_RALF,
AV_CODEC_ID_IAC,
AV_CODEC_ID_ILBC,
- AV_CODEC_ID_OPUS,
+ AV_CODEC_ID_OPUS_DEPRECATED,
+ AV_CODEC_ID_FFWAVESYNTH = MKBETAG('F','F','W','S'),
+ AV_CODEC_ID_8SVX_RAW = MKBETAG('8','S','V','X'),
+ AV_CODEC_ID_SONIC = MKBETAG('S','O','N','C'),
+ AV_CODEC_ID_SONIC_LS = MKBETAG('S','O','N','L'),
+ AV_CODEC_ID_PAF_AUDIO = MKBETAG('P','A','F','A'),
+ AV_CODEC_ID_OPUS = MKBETAG('O','P','U','S'),
+ AV_CODEC_ID_TAK = MKBETAG('t','B','a','K'),
/* subtitle codecs */
AV_CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs.
@@ -418,10 +444,22 @@ enum AVCodecID {
AV_CODEC_ID_HDMV_PGS_SUBTITLE,
AV_CODEC_ID_DVB_TELETEXT,
AV_CODEC_ID_SRT,
+ AV_CODEC_ID_MICRODVD = MKBETAG('m','D','V','D'),
+ AV_CODEC_ID_EIA_608 = MKBETAG('c','6','0','8'),
+ AV_CODEC_ID_JACOSUB = MKBETAG('J','S','U','B'),
+ AV_CODEC_ID_SAMI = MKBETAG('S','A','M','I'),
+ AV_CODEC_ID_REALTEXT = MKBETAG('R','T','X','T'),
+ AV_CODEC_ID_SUBVIEWER = MKBETAG('S','u','b','V'),
+ AV_CODEC_ID_SUBRIP = MKBETAG('S','R','i','p'),
+ AV_CODEC_ID_WEBVTT = MKBETAG('W','V','T','T'),
/* other specific kind of codecs (generally used for attachments) */
AV_CODEC_ID_FIRST_UNKNOWN = 0x18000, ///< A dummy ID pointing at the start of various fake codecs.
AV_CODEC_ID_TTF = 0x18000,
+ AV_CODEC_ID_BINTEXT = MKBETAG('B','T','X','T'),
+ AV_CODEC_ID_XBIN = MKBETAG('X','B','I','N'),
+ AV_CODEC_ID_IDF = MKBETAG( 0 ,'I','D','F'),
+ AV_CODEC_ID_OTF = MKBETAG( 0 ,'O','T','F'),
AV_CODEC_ID_PROBE = 0x19000, ///< codec_id is not known (like AV_CODEC_ID_NONE) but lavf should attempt to identify it
@@ -493,7 +531,7 @@ typedef struct AVCodecDescriptor {
* Note: If the first 23 bits of the additional bytes are not 0, then damaged
* MPEG bitstreams could cause overread and segfault.
*/
-#define FF_INPUT_BUFFER_PADDING_SIZE 8
+#define FF_INPUT_BUFFER_PADDING_SIZE 16
/**
* @ingroup lavc_encoding
@@ -565,6 +603,7 @@ enum AVColorSpace{
AVCOL_SPC_YCOCG = 8, ///< Used by Dirac / VC-2 and H.264 FRext, see ITU-T SG16
AVCOL_SPC_NB , ///< Not part of ABI
};
+#define AVCOL_SPC_YCGCO AVCOL_SPC_YCOCG
enum AVColorRange{
AVCOL_RANGE_UNSPECIFIED = 0,
@@ -650,6 +689,7 @@ typedef struct RcOverride{
#define CODEC_FLAG2_FAST 0x00000001 ///< Allow non spec compliant speedup tricks.
#define CODEC_FLAG2_NO_OUTPUT 0x00000004 ///< Skip bitstream encoding.
#define CODEC_FLAG2_LOCAL_HEADER 0x00000008 ///< Place global headers at every keyframe instead of in extradata.
+#define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format. DEPRECATED!!!!
#if FF_API_MPV_GLOBAL_OPTS
#define CODEC_FLAG_CBP_RD 0x04000000 ///< Use rate distortion optimization for cbp.
#define CODEC_FLAG_QP_RD 0x08000000 ///< Use rate distortion optimization for qp selectioon.
@@ -657,6 +697,7 @@ typedef struct RcOverride{
#define CODEC_FLAG2_SKIP_RD 0x00004000 ///< RD optimal MB level residual skipping
#endif
#define CODEC_FLAG2_CHUNKS 0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
+#define CODEC_FLAG2_SHOW_ALL 0x00400000 ///< Show all frames before the first keyframe
/* Unsupported options :
* Syntax Arithmetic coding (SAC)
@@ -729,10 +770,12 @@ typedef struct RcOverride{
* Codec should fill in channel configuration and samplerate instead of container
*/
#define CODEC_CAP_CHANNEL_CONF 0x0400
+
/**
* Codec is able to deal with negative linesizes
*/
#define CODEC_CAP_NEG_LINESIZES 0x0800
+
/**
* Codec supports frame-level multithreading.
*/
@@ -753,6 +796,14 @@ typedef struct RcOverride{
* Audio encoder supports receiving a different number of samples in each call.
*/
#define CODEC_CAP_VARIABLE_FRAME_SIZE 0x10000
+/**
+ * Codec is intra only.
+ */
+#define CODEC_CAP_INTRA_ONLY 0x40000000
+/**
+ * Codec is lossless.
+ */
+#define CODEC_CAP_LOSSLESS 0x80000000
//The following defines may change, don't expect compatibility if you use them.
#define MB_TYPE_INTRA4x4 0x0001
@@ -869,6 +920,27 @@ enum AVPacketSideDataType {
* @endcode
*/
AV_PKT_DATA_H263_MB_INFO,
+
+ /**
+ * Recommmends skipping the specified number of samples
+ * @code
+ * u32le number of samples to skip from start of this packet
+ * u32le number of samples to skip from end of this packet
+ * u8 reason for start skip
+ * u8 reason for end skip (0=padding silence, 1=convergence)
+ * @endcode
+ */
+ AV_PKT_DATA_SKIP_SAMPLES=70,
+
+ /**
+ * An AV_PKT_DATA_JP_DUALMONO side data packet indicates that
+ * the packet may contain "dual mono" audio specific to Japanese DTV
+ * and if it is true, recommends only the selected channel to be used.
+ * @code
+ * u8 selected channels (0=mail/left, 1=sub/right, 2=both)
+ * @endcode
+ */
+ AV_PKT_DATA_JP_DUALMONO,
};
typedef struct AVPacket {
@@ -950,9 +1022,12 @@ enum AVSideDataParamChangeFlags {
/**
* Audio Video Frame.
* New fields can be added to the end of AVFRAME with minor version
- * bumps. Removal, reordering and changes to existing fields require
+ * bumps. Similarly fields that are marked as to be only accessed by
+ * av_opt_ptr() can be reordered. This allows 2 forks to add fields
+ * without breaking compatibility with each other.
+ * Removal, reordering and changes in the remaining cases require
* a major version bump.
- * sizeof(AVFrame) must not be used outside libav*.
+ * sizeof(AVFrame) must not be used outside libavcodec.
*/
typedef struct AVFrame {
#define AV_NUM_DATA_POINTERS 8
@@ -1241,7 +1316,7 @@ typedef struct AVFrame {
int64_t reordered_opaque;
/**
- * hardware accelerator private data (Libav-allocated)
+ * hardware accelerator private data (FFmpeg-allocated)
* - encoding: unused
* - decoding: Set by libavcodec
*/
@@ -1273,7 +1348,7 @@ typedef struct AVFrame {
* Sample rate of the audio data.
*
* - encoding: unused
- * - decoding: set by get_buffer()
+ * - decoding: read by user
*/
int sample_rate;
@@ -1281,11 +1356,92 @@ typedef struct AVFrame {
* Channel layout of the audio data.
*
* - encoding: unused
- * - decoding: set by get_buffer()
+ * - decoding: read by user.
*/
uint64_t channel_layout;
+
+ /**
+ * frame timestamp estimated using various heuristics, in stream time base
+ * Code outside libavcodec should access this field using:
+ * av_frame_get_best_effort_timestamp(frame)
+ * - encoding: unused
+ * - decoding: set by libavcodec, read by user.
+ */
+ int64_t best_effort_timestamp;
+
+ /**
+ * reordered pos from the last AVPacket that has been input into the decoder
+ * Code outside libavcodec should access this field using:
+ * av_frame_get_pkt_pos(frame)
+ * - encoding: unused
+ * - decoding: Read by user.
+ */
+ int64_t pkt_pos;
+
+ /**
+ * duration of the corresponding packet, expressed in
+ * AVStream->time_base units, 0 if unknown.
+ * Code outside libavcodec should access this field using:
+ * av_frame_get_pkt_duration(frame)
+ * - encoding: unused
+ * - decoding: Read by user.
+ */
+ int64_t pkt_duration;
+
+ /**
+ * metadata.
+ * Code outside libavcodec should access this field using:
+ * av_frame_get_metadata(frame)
+ * - encoding: Set by user.
+ * - decoding: Set by libavcodec.
+ */
+ AVDictionary *metadata;
+
+ /**
+ * decode error flags of the frame, set to a combination of
+ * FF_DECODE_ERROR_xxx flags if the decoder produced a frame, but there
+ * were errors during the decoding.
+ * Code outside libavcodec should access this field using:
+ * av_frame_get_decode_error_flags(frame)
+ * - encoding: unused
+ * - decoding: set by libavcodec, read by user.
+ */
+ int decode_error_flags;
+#define FF_DECODE_ERROR_INVALID_BITSTREAM 1
+#define FF_DECODE_ERROR_MISSING_REFERENCE 2
+
+ /**
+ * number of audio channels, only used for audio.
+ * Code outside libavcodec should access this field using:
+ * av_frame_get_channels(frame)
+ * - encoding: unused
+ * - decoding: Read by user.
+ */
+ int64_t channels;
} AVFrame;
+/**
+ * Accessors for some AVFrame fields.
+ * The position of these field in the structure is not part of the ABI,
+ * they should not be accessed directly outside libavcodec.
+ */
+int64_t av_frame_get_best_effort_timestamp(const AVFrame *frame);
+void av_frame_set_best_effort_timestamp(AVFrame *frame, int64_t val);
+int64_t av_frame_get_pkt_duration (const AVFrame *frame);
+void av_frame_set_pkt_duration (AVFrame *frame, int64_t val);
+int64_t av_frame_get_pkt_pos (const AVFrame *frame);
+void av_frame_set_pkt_pos (AVFrame *frame, int64_t val);
+int64_t av_frame_get_channel_layout (const AVFrame *frame);
+void av_frame_set_channel_layout (AVFrame *frame, int64_t val);
+int av_frame_get_channels (const AVFrame *frame);
+void av_frame_set_channels (AVFrame *frame, int val);
+int av_frame_get_sample_rate (const AVFrame *frame);
+void av_frame_set_sample_rate (AVFrame *frame, int val);
+AVDictionary *av_frame_get_metadata (const AVFrame *frame);
+void av_frame_set_metadata (AVFrame *frame, AVDictionary *val);
+int av_frame_get_decode_error_flags (const AVFrame *frame);
+void av_frame_set_decode_error_flags (AVFrame *frame, int val);
+
struct AVCodecInternal;
enum AVFieldOrder {
@@ -1302,6 +1458,8 @@ enum AVFieldOrder {
* New fields can be added to the end with minor version bumps.
* Removal, reordering and changes to existing fields require a major
* version bump.
+ * Please use AVOptions (av_opt* / av_set/get*()) to access these fields from user
+ * applications.
* sizeof(AVCodecContext) must not be used outside libav*.
*/
typedef struct AVCodecContext {
@@ -1442,7 +1600,10 @@ typedef struct AVCodecContext {
int ticks_per_frame;
/**
- * Encoder delay.
+ * Encoding: Number of frames delay there will be from the encoder input to
+ * the decoder output. (we assume the decoder matches the spec)
+ * Decoding: Number of frames delay in addition to what a standard decoder
+ * as specified in the spec would produce.
*
* Video:
* Number of frames the decoded output will be delayed relative to the
@@ -1476,7 +1637,7 @@ typedef struct AVCodecContext {
int width, height;
/**
- * Bitstream width / height, may be different from width/height.
+ * Bitstream width / height, may be different from width/height if lowres enabled.
* - encoding: unused
* - decoding: Set by user before init if known. Codec should override / dynamically change if needed.
*/
@@ -1494,7 +1655,7 @@ typedef struct AVCodecContext {
/**
* Pixel format, see AV_PIX_FMT_xxx.
* May be set by the demuxer if known from headers.
- * May be overriden by the decoder if it knows better.
+ * May be overridden by the decoder if it knows better.
* - encoding: Set by user.
* - decoding: Set by user if known, overridden by libavcodec if known
*/
@@ -2122,7 +2283,7 @@ typedef struct AVCodecContext {
/**
* Audio channel layout.
* - encoding: set by user.
- * - decoding: set by libavcodec.
+ * - decoding: set by user, may be overwritten by libavcodec.
*/
uint64_t channel_layout;
@@ -2141,9 +2302,10 @@ typedef struct AVCodecContext {
enum AVAudioServiceType audio_service_type;
/**
- * Used to request a sample format from the decoder.
- * - encoding: unused.
+ * desired sample format
+ * - encoding: Not used.
* - decoding: Set by user.
+ * Decoder will decode to this format if it can.
*/
enum AVSampleFormat request_sample_fmt;
@@ -2257,7 +2419,7 @@ typedef struct AVCodecContext {
/**
* ratecontrol qmin qmax limiting method
- * 0-> clipping, 1-> use a nice continous function to limit qscale wthin qmin/qmax.
+ * 0-> clipping, 1-> use a nice continuous function to limit qscale wthin qmin/qmax.
* - encoding: Set by user.
* - decoding: unused
*/
@@ -2413,9 +2575,9 @@ typedef struct AVCodecContext {
int max_prediction_order;
/**
- * GOP timecode frame start number, in non drop frame format
- * - encoding: Set by user.
- * - decoding: unused
+ * GOP timecode frame start number
+ * - encoding: Set by user, in non drop frame format
+ * - decoding: Set by libavcodec (timecode in the 25 bits format, -1 if unset)
*/
int64_t timecode_frame_start;
@@ -2562,6 +2724,11 @@ typedef struct AVCodecContext {
#define AV_EF_BUFFER (1<<2)
#define AV_EF_EXPLODE (1<<3)
+#define AV_EF_CAREFUL (1<<16)
+#define AV_EF_COMPLIANT (1<<17)
+#define AV_EF_AGGRESSIVE (1<<18)
+
+
/**
* opaque 64bit number (generally a PTS) that will be reordered and
* output in AVFrame.reordered_opaque
@@ -2582,8 +2749,8 @@ typedef struct AVCodecContext {
* Hardware accelerator context.
* For some hardware accelerators, a global context needs to be
* provided by the user. In that case, this holds display-dependent
- * data Libav cannot instantiate itself. Please refer to the
- * Libav HW accelerator documentation to know how to fill this
+ * data FFmpeg cannot instantiate itself. Please refer to the
+ * FFmpeg HW accelerator documentation to know how to fill this
* is. e.g. for VA API, this is a struct vaapi_context.
* - encoding: unused
* - decoding: Set by user
@@ -2668,7 +2835,7 @@ typedef struct AVCodecContext {
* - encoding: unused
* - decoding: Set by user.
*/
- attribute_deprecated int lowres;
+ int lowres;
/**
* the picture in the bitstream
@@ -2893,8 +3060,42 @@ typedef struct AVCodecContext {
* - decoding: unused.
*/
uint64_t vbv_delay;
+
+ /**
+ * Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
+ * Code outside libavcodec should access this field using:
+ * avcodec_set_pkt_timebase(avctx)
+ * - encoding unused.
+ * - decodimg set by user
+ */
+ AVRational pkt_timebase;
+
+ /**
+ * AVCodecDescriptor
+ * Code outside libavcodec should access this field using:
+ * avcodec_get_codec_descriptior(avctx)
+ * - encoding: unused.
+ * - decoding: set by libavcodec.
+ */
+ const AVCodecDescriptor *codec_descriptor;
+
+ /**
+ * Current statistics for PTS correction.
+ * - decoding: maintained and used by libavcodec, not intended to be used by user apps
+ * - encoding: unused
+ */
+ int64_t pts_correction_num_faulty_pts; /// Number of incorrect PTS values so far
+ int64_t pts_correction_num_faulty_dts; /// Number of incorrect DTS values so far
+ int64_t pts_correction_last_pts; /// PTS of the last frame
+ int64_t pts_correction_last_dts; /// DTS of the last frame
} AVCodecContext;
+AVRational av_codec_get_pkt_timebase (const AVCodecContext *avctx);
+void av_codec_set_pkt_timebase (AVCodecContext *avctx, AVRational val);
+
+const AVCodecDescriptor *av_codec_get_codec_descriptor(const AVCodecContext *avctx);
+void av_codec_set_codec_descriptor(AVCodecContext *avctx, const AVCodecDescriptor *desc);
+
/**
* AVProfile.
*/
@@ -2935,7 +3136,7 @@ typedef struct AVCodec {
const int *supported_samplerates; ///< array of supported audio samplerates, or NULL if unknown, array is terminated by 0
const enum AVSampleFormat *sample_fmts; ///< array of supported sample formats, or NULL if unknown, array is terminated by -1
const uint64_t *channel_layouts; ///< array of support channel layouts, or NULL if unknown. array is terminated by 0
- attribute_deprecated uint8_t max_lowres; ///< maximum value for lowres supported by the decoder
+ uint8_t max_lowres; ///< maximum value for lowres supported by the decoder
const AVClass *priv_class; ///< AVClass for the private context
const AVProfile *profiles; ///< array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN}
@@ -3112,9 +3313,6 @@ typedef struct AVPicture {
* @}
*/
-#define AVPALETTE_SIZE 1024
-#define AVPALETTE_COUNT 256
-
enum AVSubtitleType {
SUBTITLE_NONE,
@@ -3151,10 +3349,16 @@ typedef struct AVSubtitleRect {
/**
* 0 terminated ASS/SSA compatible event line.
- * The pressentation of this is unaffected by the other values in this
+ * The presentation of this is unaffected by the other values in this
* struct.
*/
char *ass;
+
+ /**
+ * 1 indicates this subtitle is a forced subtitle.
+ * A forced subtitle should be displayed even when subtitles are hidden.
+ */
+ int forced;
} AVSubtitleRect;
typedef struct AVSubtitle {
@@ -3210,6 +3414,40 @@ void avcodec_register(AVCodec *codec);
*/
void avcodec_register_all(void);
+
+#if FF_API_ALLOC_CONTEXT
+/**
+ * Allocate an AVCodecContext and set its fields to default values. The
+ * resulting struct can be deallocated by simply calling av_free().
+ *
+ * @return An AVCodecContext filled with default values or NULL on failure.
+ * @see avcodec_get_context_defaults
+ *
+ * @deprecated use avcodec_alloc_context3()
+ */
+attribute_deprecated
+AVCodecContext *avcodec_alloc_context(void);
+
+/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
+ * we WILL change its arguments and name a few times! */
+attribute_deprecated
+AVCodecContext *avcodec_alloc_context2(enum AVMediaType);
+
+/**
+ * Set the fields of the given AVCodecContext to default values.
+ *
+ * @param s The AVCodecContext of which the fields should be set to default values.
+ * @deprecated use avcodec_get_context_defaults3
+ */
+attribute_deprecated
+void avcodec_get_context_defaults(AVCodecContext *s);
+
+/** THIS FUNCTION IS NOT YET PART OF THE PUBLIC API!
+ * we WILL change its arguments and name a few times! */
+attribute_deprecated
+void avcodec_get_context_defaults2(AVCodecContext *s, enum AVMediaType);
+#endif
+
/**
* Allocate an AVCodecContext and set its fields to default values. The
* resulting struct can be deallocated by calling avcodec_close() on it followed
@@ -3247,6 +3485,22 @@ int avcodec_get_context_defaults3(AVCodecContext *s, const AVCodec *codec);
const AVClass *avcodec_get_class(void);
/**
+ * Get the AVClass for AVFrame. It can be used in combination with
+ * AV_OPT_SEARCH_FAKE_OBJ for examining options.
+ *
+ * @see av_opt_find().
+ */
+const AVClass *avcodec_get_frame_class(void);
+
+/**
+ * Get the AVClass for AVSubtitleRect. It can be used in combination with
+ * AV_OPT_SEARCH_FAKE_OBJ for examining options.
+ *
+ * @see av_opt_find().
+ */
+const AVClass *avcodec_get_subtitle_rect_class(void);
+
+/**
* Copy the settings of the source AVCodecContext into the destination
* AVCodecContext. The resulting destination codec context will be
* unopened, i.e. you are required to call avcodec_open2() before you
@@ -3287,6 +3541,40 @@ void avcodec_get_frame_defaults(AVFrame *frame);
*/
void avcodec_free_frame(AVFrame **frame);
+#if FF_API_AVCODEC_OPEN
+/**
+ * Initialize the AVCodecContext to use the given AVCodec. Prior to using this
+ * function the context has to be allocated.
+ *
+ * The functions avcodec_find_decoder_by_name(), avcodec_find_encoder_by_name(),
+ * avcodec_find_decoder() and avcodec_find_encoder() provide an easy way for
+ * retrieving a codec.
+ *
+ * @warning This function is not thread safe!
+ *
+ * @code
+ * avcodec_register_all();
+ * codec = avcodec_find_decoder(AV_CODEC_ID_H264);
+ * if (!codec)
+ * exit(1);
+ *
+ * context = avcodec_alloc_context3(codec);
+ *
+ * if (avcodec_open(context, codec) < 0)
+ * exit(1);
+ * @endcode
+ *
+ * @param avctx The context which will be set up to use the given codec.
+ * @param codec The codec to use within the context.
+ * @return zero on success, a negative value on error
+ * @see avcodec_alloc_context3, avcodec_find_decoder, avcodec_find_encoder, avcodec_close
+ *
+ * @deprecated use avcodec_open2
+ */
+attribute_deprecated
+int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
+#endif
+
/**
* Initialize the AVCodecContext to use the given AVCodec. Prior to using this
* function the context has to be allocated with avcodec_alloc_context3().
@@ -3400,6 +3688,13 @@ int av_grow_packet(AVPacket *pkt, int grow_by);
int av_dup_packet(AVPacket *pkt);
/**
+ * Copy packet, including contents
+ *
+ * @return 0 on success, negative AVERROR on fail
+ */
+int av_copy_packet(AVPacket *dst, AVPacket *src);
+
+/**
* Free a packet.
*
* @param pkt packet to free
@@ -3439,6 +3734,11 @@ int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
uint8_t* av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
int *size);
+int av_packet_merge_side_data(AVPacket *pkt);
+
+int av_packet_split_side_data(AVPacket *pkt);
+
+
/**
* @}
*/
@@ -3594,7 +3894,7 @@ attribute_deprecated int avcodec_decode_audio3(AVCodecContext *avctx, int16_t *s
* AVPacket is returned.
*/
int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame,
- int *got_frame_ptr, AVPacket *avpkt);
+ int *got_frame_ptr, const AVPacket *avpkt);
/**
* Decode the video frame of size avpkt->size from avpkt->data into picture.
@@ -3639,7 +3939,7 @@ int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame,
*/
int avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
int *got_picture_ptr,
- AVPacket *avpkt);
+ const AVPacket *avpkt);
/**
* Decode a subtitle message.
@@ -3704,6 +4004,7 @@ typedef struct AVCodecParserContext {
#define PARSER_FLAG_ONCE 0x0002
/// Set if the parser has a valid file offset
#define PARSER_FLAG_FETCHED_OFFSET 0x0004
+#define PARSER_FLAG_USE_CODEC_TS 0x1000
int64_t offset; ///< byte offset from starting packet start
int64_t cur_frame_end[AV_PARSER_PTS_NB];
@@ -3929,11 +4230,12 @@ int attribute_deprecated avcodec_encode_audio(AVCodecContext *avctx,
* The user can supply an output buffer by setting
* avpkt->data and avpkt->size prior to calling the
* function, but if the size of the user-provided data is not
- * large enough, encoding will fail. All other AVPacket fields
- * will be reset by the encoder using av_init_packet(). If
- * avpkt->data is NULL, the encoder will allocate it.
- * The encoder will set avpkt->size to the size of the
- * output packet.
+ * large enough, encoding will fail. If avpkt->data and
+ * avpkt->size are set, avpkt->destruct must also be set. All
+ * other AVPacket fields will be reset by the encoder using
+ * av_init_packet(). If avpkt->data is NULL, the encoder will
+ * allocate it. The encoder will set avpkt->size to the size
+ * of the output packet.
*
* If this function fails or produces no output, avpkt will be
* freed using av_free_packet() (i.e. avpkt->destruct will be
@@ -4026,7 +4328,7 @@ int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
/**
* @defgroup lavc_resample Audio resampling
* @ingroup libavc
- * @deprecated use libavresample instead
+ * @deprecated use libswresample instead
*
* @{
*/
@@ -4147,42 +4449,19 @@ int avpicture_alloc(AVPicture *picture, enum AVPixelFormat pix_fmt, int width, i
void avpicture_free(AVPicture *picture);
/**
- * Fill in the AVPicture fields.
- * The fields of the given AVPicture are filled in by using the 'ptr' address
- * which points to the image data buffer. Depending on the specified picture
- * format, one or multiple image data pointers and line sizes will be set.
- * If a planar format is specified, several pointers will be set pointing to
- * the different picture planes and the line sizes of the different planes
- * will be stored in the lines_sizes array.
- * Call with ptr == NULL to get the required size for the ptr buffer.
- *
- * To allocate the buffer and fill in the AVPicture fields in one call,
- * use avpicture_alloc().
+ * Fill in the AVPicture fields, always assume a linesize alignment of
+ * 1.
*
- * @param picture AVPicture whose fields are to be filled in
- * @param ptr Buffer which will contain or contains the actual image data
- * @param pix_fmt The format in which the picture data is stored.
- * @param width the width of the image in pixels
- * @param height the height of the image in pixels
- * @return size of the image data in bytes
+ * @see av_image_fill_arrays()
*/
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
enum AVPixelFormat pix_fmt, int width, int height);
/**
- * Copy pixel data from an AVPicture into a buffer.
- * The data is stored compactly, without any gaps for alignment or padding
- * which may be applied by avpicture_fill().
- *
- * @see avpicture_get_size()
+ * Copy pixel data from an AVPicture into a buffer, always assume a
+ * linesize alignment of 1.
*
- * @param[in] src AVPicture containing image data
- * @param[in] pix_fmt The format in which the picture data is stored.
- * @param[in] width the width of the image in pixels.
- * @param[in] height the height of the image in pixels.
- * @param[out] dest A buffer into which picture data will be copied.
- * @param[in] dest_size The size of 'dest'.
- * @return The number of bytes written to dest, or a negative value (error code) on error.
+ * @see av_image_copy_to_buffer()
*/
int avpicture_layout(const AVPicture* src, enum AVPixelFormat pix_fmt,
int width, int height,
@@ -4191,14 +4470,9 @@ int avpicture_layout(const AVPicture* src, enum AVPixelFormat pix_fmt,
/**
* Calculate the size in bytes that a picture of the given width and height
* would occupy if stored in the given picture format.
- * Note that this returns the size of a compact representation as generated
- * by avpicture_layout(), which can be smaller than the size required for e.g.
- * avpicture_fill().
+ * Always assume a linesize alignment of 1.
*
- * @param pix_fmt the given picture format
- * @param width the width of the image
- * @param height the height of the image
- * @return Image data size in bytes or -1 on error (e.g. too large dimensions).
+ * @see av_image_get_buffer_size().
*/
int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height);
@@ -4208,7 +4482,7 @@ int avpicture_get_size(enum AVPixelFormat pix_fmt, int width, int height);
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
enum AVPixelFormat pix_fmt, int width, int height);
/**
- * Copy image src to dst. Wraps av_picture_data_copy() above.
+ * Copy image src to dst. Wraps av_image_copy().
*/
void av_picture_copy(AVPicture *dst, const AVPicture *src,
enum AVPixelFormat pix_fmt, int width, int height);
@@ -4276,14 +4550,15 @@ unsigned int avcodec_pix_fmt_to_codec_tag(enum AVPixelFormat pix_fmt);
* @param[in] dst_pix_fmt destination pixel format
* @param[in] src_pix_fmt source pixel format
* @param[in] has_alpha Whether the source pixel format alpha channel is used.
- * @return Combination of flags informing you what kind of losses will occur.
+ * @return Combination of flags informing you what kind of losses will occur
+ * (maximum loss for an invalid dst_pix_fmt).
*/
int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat src_pix_fmt,
int has_alpha);
#if FF_API_FIND_BEST_PIX_FMT
/**
- * @deprecated use avcodec_find_best_pix_fmt2() instead.
+ * @deprecated use avcodec_find_best_pix_fmt_of_2() instead.
*
* Find the best pixel format to convert to given a certain source pixel
* format. When converting from one pixel format to another, information loss
@@ -4294,9 +4569,11 @@ int avcodec_get_pix_fmt_loss(enum AVPixelFormat dst_pix_fmt, enum AVPixelFormat
* The pixel formats from which it chooses one, are determined by the
* pix_fmt_mask parameter.
*
+ * Note, only the first 64 pixel formats will fit in pix_fmt_mask.
+ *
* @code
* src_pix_fmt = AV_PIX_FMT_YUV420P;
- * pix_fmt_mask = (1 << AV_PIX_FMT_YUV422P) || (1 << AV_PIX_FMT_RGB24);
+ * pix_fmt_mask = (1 << AV_PIX_FMT_YUV422P) | (1 << AV_PIX_FMT_RGB24);
* dst_pix_fmt = avcodec_find_best_pix_fmt(pix_fmt_mask, src_pix_fmt, alpha, &loss);
* @endcode
*
@@ -4316,7 +4593,7 @@ enum AVPixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum AVPixelF
* format. When converting from one pixel format to another, information loss
* may occur. For example, when converting from RGB24 to GRAY, the color
* information will be lost. Similarly, other losses occur when converting from
- * some formats to other formats. avcodec_find_best_pix_fmt2() searches which of
+ * some formats to other formats. avcodec_find_best_pix_fmt_of_2() searches which of
* the given pixel formats should be used to suffer the least amount of loss.
* The pixel formats from which it chooses one, are determined by the
* pix_fmt_list parameter.
@@ -4328,9 +4605,53 @@ enum AVPixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum AVPixelF
* @param[out] loss_ptr Combination of flags informing you what kind of losses will occur.
* @return The best pixel format to convert to or -1 if none was found.
*/
+enum AVPixelFormat avcodec_find_best_pix_fmt_of_list(enum AVPixelFormat *pix_fmt_list,
+ enum AVPixelFormat src_pix_fmt,
+ int has_alpha, int *loss_ptr);
+
+/**
+ * Find the best pixel format to convert to given a certain source pixel
+ * format and a selection of two destination pixel formats. When converting from
+ * one pixel format to another, information loss may occur. For example, when converting
+ * from RGB24 to GRAY, the color information will be lost. Similarly, other losses occur when
+ * converting from some formats to other formats. avcodec_find_best_pix_fmt_of_2() selects which of
+ * the given pixel formats should be used to suffer the least amount of loss.
+ *
+ * If one of the destination formats is AV_PIX_FMT_NONE the other pixel format (if valid) will be
+ * returned.
+ *
+ * @code
+ * src_pix_fmt = AV_PIX_FMT_YUV420P;
+ * dst_pix_fmt1= AV_PIX_FMT_RGB24;
+ * dst_pix_fmt2= AV_PIX_FMT_GRAY8;
+ * dst_pix_fmt3= AV_PIX_FMT_RGB8;
+ * loss= FF_LOSS_CHROMA; // don't care about chroma loss, so chroma loss will be ignored.
+ * dst_pix_fmt = avcodec_find_best_pix_fmt_of_2(dst_pix_fmt1, dst_pix_fmt2, src_pix_fmt, alpha, &loss);
+ * dst_pix_fmt = avcodec_find_best_pix_fmt_of_2(dst_pix_fmt, dst_pix_fmt3, src_pix_fmt, alpha, &loss);
+ * @endcode
+ *
+ * @param[in] dst_pix_fmt1 One of the two destination pixel formats to choose from
+ * @param[in] dst_pix_fmt2 The other of the two destination pixel formats to choose from
+ * @param[in] src_pix_fmt Source pixel format
+ * @param[in] has_alpha Whether the source pixel format alpha channel is used.
+ * @param[in, out] loss_ptr Combination of loss flags. In: selects which of the losses to ignore, i.e.
+ * NULL or value of zero means we care about all losses. Out: the loss
+ * that occurs when converting from src to selected dst pixel format.
+ * @return The best pixel format to convert to or -1 if none was found.
+ */
+enum AVPixelFormat avcodec_find_best_pix_fmt_of_2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
+ enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr);
+
+attribute_deprecated
+#if AV_HAVE_INCOMPATIBLE_FORK_ABI
enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat *pix_fmt_list,
enum AVPixelFormat src_pix_fmt,
int has_alpha, int *loss_ptr);
+#else
+enum AVPixelFormat avcodec_find_best_pix_fmt2(enum AVPixelFormat dst_pix_fmt1, enum AVPixelFormat dst_pix_fmt2,
+ enum AVPixelFormat src_pix_fmt, int has_alpha, int *loss_ptr);
+#endif
+
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat * fmt);
@@ -4400,6 +4721,14 @@ void avcodec_default_free_buffers(AVCodecContext *s);
int av_get_bits_per_sample(enum AVCodecID codec_id);
/**
+ * Return the PCM codec associated with a sample format.
+ * @param be endianness, 0 for little, 1 for big,
+ * -1 (or anything else) for native
+ * @return AV_CODEC_ID_PCM_* or AV_CODEC_ID_NONE
+ */
+enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be);
+
+/**
* Return codec bits per sample.
* Only return non-zero if the bits per sample is exactly correct, not an
* approximation.
@@ -4473,15 +4802,21 @@ void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size);
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size);
/**
- * Allocate a buffer with padding, reusing the given one if large enough.
- *
* Same behaviour av_fast_malloc but the buffer has additional
- * FF_INPUT_PADDING_SIZE at the end which will always memset to 0.
+ * FF_INPUT_PADDING_SIZE at the end which will will always be 0.
*
+ * In addition the whole buffer will initially and after resizes
+ * be 0-initialized so that no uninitialized data will ever appear.
*/
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size);
/**
+ * Same behaviour av_fast_padded_malloc except that buffer will always
+ * be 0-initialized after call.
+ */
+void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size);
+
+/**
* Encode extradata length to a buffer. Used by xiph codecs.
*
* @param s buffer to write to; must be at least (v/255+1) bytes long
@@ -4492,7 +4827,7 @@ unsigned int av_xiphlacing(unsigned char *s, unsigned int v);
/**
* Log a generic warning message about a missing feature. This function is
- * intended to be used internally by Libav (libavcodec, libavformat, etc.)
+ * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
* only, and would normally not be used by applications.
* @param[in] avc a pointer to an arbitrary struct of which the first field is
* a pointer to an AVClass struct
@@ -4506,7 +4841,7 @@ void av_log_missing_feature(void *avc, const char *feature, int want_sample);
/**
* Log a generic warning message asking for a sample. This function is
- * intended to be used internally by Libav (libavcodec, libavformat, etc.)
+ * intended to be used internally by FFmpeg (libavcodec, libavformat, etc.)
* only, and would normally not be used by applications.
* @param[in] avc a pointer to an arbitrary struct of which the first field is
* a pointer to an AVClass struct
@@ -4543,7 +4878,7 @@ enum AVLockOp {
* lockmgr should store/get a pointer to a user allocated mutex. It's
* NULL upon AV_LOCK_CREATE and != NULL for all other ops.
*
- * @param cb User defined callback. Note: Libav may invoke calls to this
+ * @param cb User defined callback. Note: FFmpeg may invoke calls to this
* callback during the call to av_lockmgr_register().
* Thus, the application must be prepared to handle that.
* If cb is set to NULL the lockmgr will be unregistered.
@@ -4558,6 +4893,12 @@ int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op));
enum AVMediaType avcodec_get_type(enum AVCodecID codec_id);
/**
+ * Get the name of a codec.
+ * @return a static string identifying the codec; never NULL
+ */
+const char *avcodec_get_name(enum AVCodecID id);
+
+/**
* @return a positive value if s is open (i.e. avcodec_open2() was called on it
* with no corresponding avcodec_close()), 0 otherwise.
*/