Merge remote-tracking branch 'qatar/master'

* qatar/master:
  ARM: ac3: update ff_ac3_extract_exponents_neon per 8b7b2d6
  ARM: NEON optimised vector_clip_int32()
  swscale: disable full_chroma_int when converting to non-24/32bpp RGB.
  suggest to use av_get_bytes_per_sample() in av_get_bits_per_sample_format() doxy
  ffmpeg: use av_get_bytes_per_sample() in place of av_get_bits_per_sample_fmt()
  put_bits: remove ALT_BITSTREAM_WRITER
  put_bits: always use intreadwrite.h macros
  libavformat: Add an example how to use the metadata API
  doxygen: Prefer member groups over grouping into modules
  doxygen: be more permissive when searching for API examples
  avformat: doxify the Metadata API
  lavf: restore old behavior for custom AVIOContex with an AVFMT_NOFILE format.
  lavf: use the correct pointer in av_open_input_stream().
  avidec: infer absolute vs relative index from first packet

Conflicts:
	libavformat/Makefile
	libavformat/avidec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-07-03 02:56:12 +02:00
commit cbfdfbe846
32 changed files with 301 additions and 320 deletions

View File

@ -591,14 +591,14 @@ EXCLUDE_SYMBOLS =
# directories that contain example code fragments that are included (see
# the \include command).
EXAMPLE_PATH = libavcodec/api-example.c libavformat/output-example.c
EXAMPLE_PATH = libavcodec/ libavformat/
# If the value of the EXAMPLE_PATH tag contains directories, you can use the
# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp
# and *.h) to filter out the source-files in the directories. If left
# blank all files are included.
EXAMPLE_PATTERNS =
EXAMPLE_PATTERNS = *-example.c
# If the EXAMPLE_RECURSIVE tag is set to YES then subdirectories will be
# searched for input files to be used with the \include or \dontinclude

View File

@ -1859,7 +1859,7 @@ static int output_packet(AVInputStream *ist, int ist_index,
ret = 0;
/* encode any samples remaining in fifo */
if (fifo_bytes > 0) {
int osize = av_get_bits_per_sample_fmt(enc->sample_fmt) >> 3;
int osize = av_get_bytes_per_sample(enc->sample_fmt);
int fs_tmp = enc->frame_size;
av_fifo_generic_read(ost->fifo, audio_buf, fifo_bytes, NULL);

View File

@ -258,7 +258,7 @@ typedef struct {
DynamicRangeControl che_drc;
/**
* @defgroup elements Channel element related data.
* @name Channel element related data
* @{
*/
enum ChannelPosition che_pos[4][MAX_ELEM_ID]; /**< channel element channel mapping with the
@ -270,14 +270,15 @@ typedef struct {
/** @} */
/**
* @defgroup temporary aligned temporary buffers (We do not want to have these on the stack.)
* @name temporary aligned temporary buffers
* (We do not want to have these on the stack.)
* @{
*/
DECLARE_ALIGNED(32, float, buf_mdct)[1024];
/** @} */
/**
* @defgroup tables Computed / set up during initialization.
* @name Computed / set up during initialization
* @{
*/
FFTContext mdct;
@ -289,7 +290,7 @@ typedef struct {
/** @} */
/**
* @defgroup output Members used for output interleaving.
* @name Members used for output interleaving
* @{
*/
float *output_data[MAX_CHANNELS]; ///< Points to each element's 'ret' buffer (PCM output).

View File

@ -94,7 +94,7 @@ typedef struct AC3BitAllocParameters {
* Coded AC-3 header values up to the lfeon element, plus derived values.
*/
typedef struct {
/** @defgroup coded Coded elements
/** @name Coded elements
* @{
*/
uint16_t sync_word;
@ -112,7 +112,7 @@ typedef struct {
int num_blocks; ///< number of audio blocks
/** @} */
/** @defgroup derived Derived values
/** @name Derived values
* @{
*/
uint8_t sr_shift;

View File

@ -69,7 +69,7 @@ typedef struct {
AVCodecContext *avctx; ///< parent context
GetBitContext gbc; ///< bitstream reader
///@defgroup bsi bit stream information
///@name Bit stream information
///@{
int frame_type; ///< frame type (strmtyp)
int substreamid; ///< substream identification
@ -87,7 +87,7 @@ typedef struct {
int eac3; ///< indicates if current frame is E-AC-3
///@}
///@defgroup audfrm frame syntax parameters
///@name Frame syntax parameters
int snr_offset_strategy; ///< SNR offset strategy (snroffststr)
int block_switch_syntax; ///< block switch syntax enabled (blkswe)
int dither_flag_syntax; ///< dither flag syntax enabled (dithflage)
@ -97,7 +97,7 @@ typedef struct {
int skip_syntax; ///< skip field syntax enabled (skipflde)
///@}
///@defgroup cpl standard coupling
///@name Standard coupling
int cpl_in_use[AC3_MAX_BLOCKS]; ///< coupling in use (cplinu)
int cpl_strategy_exists[AC3_MAX_BLOCKS];///< coupling strategy exists (cplstre)
int channel_in_cpl[AC3_MAX_CHANNELS]; ///< channel in coupling (chincpl)
@ -110,7 +110,7 @@ typedef struct {
int cpl_coords[AC3_MAX_CHANNELS][AC3_MAX_CPL_BANDS]; ///< coupling coordinates (cplco)
///@}
///@defgroup spx spectral extension
///@name Spectral extension
///@{
int spx_in_use; ///< spectral extension in use (spxinu)
uint8_t channel_uses_spx[AC3_MAX_CHANNELS]; ///< channel uses spectral extension (chinspx)
@ -126,12 +126,12 @@ typedef struct {
float spx_signal_blend[AC3_MAX_CHANNELS][SPX_MAX_BANDS];///< spx signal blending factor (sblendfact)
///@}
///@defgroup aht adaptive hybrid transform
///@name Adaptive hybrid transform
int channel_uses_aht[AC3_MAX_CHANNELS]; ///< channel AHT in use (chahtinu)
int pre_mantissa[AC3_MAX_CHANNELS][AC3_MAX_COEFS][AC3_MAX_BLOCKS]; ///< pre-IDCT mantissas
///@}
///@defgroup channel channel
///@name Channel
int fbw_channels; ///< number of full-bandwidth channels
int channels; ///< number of total channels
int lfe_ch; ///< index of LFE channel
@ -141,27 +141,27 @@ typedef struct {
int out_channels; ///< number of output channels
///@}
///@defgroup dynrng dynamic range
///@name Dynamic range
float dynamic_range[2]; ///< dynamic range
///@}
///@defgroup bandwidth bandwidth
///@name Bandwidth
int start_freq[AC3_MAX_CHANNELS]; ///< start frequency bin (strtmant)
int end_freq[AC3_MAX_CHANNELS]; ///< end frequency bin (endmant)
///@}
///@defgroup rematrixing rematrixing
///@name Rematrixing
int num_rematrixing_bands; ///< number of rematrixing bands (nrematbnd)
int rematrixing_flags[4]; ///< rematrixing flags (rematflg)
///@}
///@defgroup exponents exponents
///@name Exponents
int num_exp_groups[AC3_MAX_CHANNELS]; ///< Number of exponent groups (nexpgrp)
int8_t dexps[AC3_MAX_CHANNELS][AC3_MAX_COEFS]; ///< decoded exponents
int exp_strategy[AC3_MAX_BLOCKS][AC3_MAX_CHANNELS]; ///< exponent strategies (expstr)
///@}
///@defgroup bitalloc bit allocation
///@name Bit allocation
AC3BitAllocParameters bit_alloc_params; ///< bit allocation parameters
int first_cpl_leak; ///< first coupling leak state (firstcplleak)
int snr_offset[AC3_MAX_CHANNELS]; ///< signal-to-noise ratio offsets (snroffst)
@ -177,25 +177,25 @@ typedef struct {
uint8_t dba_values[AC3_MAX_CHANNELS][8]; ///< delta values for each segment
///@}
///@defgroup dithering zero-mantissa dithering
///@name Zero-mantissa dithering
int dither_flag[AC3_MAX_CHANNELS]; ///< dither flags (dithflg)
AVLFG dith_state; ///< for dither generation
///@}
///@defgroup imdct IMDCT
///@name IMDCT
int block_switch[AC3_MAX_CHANNELS]; ///< block switch flags (blksw)
FFTContext imdct_512; ///< for 512 sample IMDCT
FFTContext imdct_256; ///< for 256 sample IMDCT
///@}
///@defgroup opt optimization
///@name Optimization
DSPContext dsp; ///< for optimization
AC3DSPContext ac3dsp;
FmtConvertContext fmt_conv; ///< optimized conversion functions
float mul_bias; ///< scaling for float_to_int16 conversion
///@}
///@defgroup arrays aligned arrays
///@name Aligned arrays
DECLARE_ALIGNED(16, int, fixed_coeffs)[AC3_MAX_CHANNELS][AC3_MAX_COEFS]; ///< fixed-point transform coefficients
DECLARE_ALIGNED(32, float, transform_coeffs)[AC3_MAX_CHANNELS][AC3_MAX_COEFS]; ///< transform coefficients
DECLARE_ALIGNED(32, float, delay)[AC3_MAX_CHANNELS][AC3_BLOCK_SIZE]; ///< delay - added to the next block

View File

@ -204,7 +204,7 @@ static enum Mode unpack_bitstream(AMRContext *p, const uint8_t *buf,
}
/// @defgroup amr_lpc_decoding AMR pitch LPC coefficient decoding functions
/// @name AMR pitch LPC coefficient decoding functions
/// @{
/**
@ -341,7 +341,7 @@ static void lsf2lsp_3(AMRContext *p)
/// @}
/// @defgroup amr_pitch_vector_decoding AMR pitch vector decoding functions
/// @name AMR pitch vector decoding functions
/// @{
/**
@ -403,7 +403,7 @@ static void decode_pitch_vector(AMRContext *p,
/// @}
/// @defgroup amr_algebraic_code_book AMR algebraic code book (fixed) vector decoding functions
/// @name AMR algebraic code book (fixed) vector decoding functions
/// @{
/**
@ -547,7 +547,7 @@ static void pitch_sharpening(AMRContext *p, int subframe, enum Mode mode,
/// @}
/// @defgroup amr_gain_decoding AMR gain decoding functions
/// @name AMR gain decoding functions
/// @{
/**
@ -633,7 +633,7 @@ static void decode_gains(AMRContext *p, const AMRNBSubframe *amr_subframe,
/// @}
/// @defgroup amr_pre_processing AMR pre-processing functions
/// @name AMR preprocessing functions
/// @{
/**
@ -751,7 +751,7 @@ static const float *anti_sparseness(AMRContext *p, AMRFixed *fixed_sparse,
/// @}
/// @defgroup amr_synthesis AMR synthesis functions
/// @name AMR synthesis functions
/// @{
/**
@ -812,7 +812,7 @@ static int synthesis(AMRContext *p, float *lpc,
/// @}
/// @defgroup amr_update AMR update functions
/// @name AMR update functions
/// @{
/**
@ -837,7 +837,7 @@ static void update_state(AMRContext *p)
/// @}
/// @defgroup amr_postproc AMR Post processing functions
/// @name AMR Postprocessing functions
/// @{
/**

View File

@ -217,7 +217,7 @@ static av_cold int ape_decode_close(AVCodecContext * avctx)
}
/**
* @defgroup rangecoder APE range decoder
* @name APE range decoding functions
* @{
*/

View File

@ -95,19 +95,14 @@ function ff_float_to_fixed24_neon, export=1
endfunc
function ff_ac3_extract_exponents_neon, export=1
vmov.i32 q14, #24
vmov.i32 q15, #8
1:
vld1.32 {q0}, [r1,:128]
vld1.32 {q0}, [r1,:128]!
vabs.s32 q1, q0
vclz.i32 q3, q1
vsub.i32 q3, q3, q15
vcge.s32 q2, q3, q14
vbit q3, q14, q2
vbic q0, q0, q2
vmovn.i32 d6, q3
vmovn.i16 d6, q3
vst1.32 {q0}, [r1,:128]!
vst1.32 {d6[0]}, [r0,:32]!
subs r2, r2, #4
bgt 1b

View File

@ -160,6 +160,8 @@ void ff_vector_fmul_add_neon(float *dst, const float *src0, const float *src1,
void ff_vector_clipf_neon(float *dst, const float *src, float min, float max,
int len);
void ff_vector_clip_int32_neon(int32_t *dst, const int32_t *src, int32_t min,
int32_t max, unsigned int len);
void ff_vorbis_inverse_coupling_neon(float *mag, float *ang, int blocksize);
@ -316,6 +318,7 @@ void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
c->vector_fmul_reverse = ff_vector_fmul_reverse_neon;
c->vector_fmul_add = ff_vector_fmul_add_neon;
c->vector_clipf = ff_vector_clipf_neon;
c->vector_clip_int32 = ff_vector_clip_int32_neon;
c->vector_fmul_sv_scalar[0] = ff_vector_fmul_sv_scalar_2_neon;
c->vector_fmul_sv_scalar[1] = ff_vector_fmul_sv_scalar_4_neon;

View File

@ -815,3 +815,19 @@ function ff_apply_window_int16_neon, export=1
pop {r4,pc}
endfunc
function ff_vector_clip_int32_neon, export=1
vdup.32 q0, r2
vdup.32 q1, r3
ldr r2, [sp]
1:
vld1.32 {q2-q3}, [r1,:128]!
vmin.s32 q2, q2, q1
vmin.s32 q3, q3, q1
vmax.s32 q2, q2, q0
vmax.s32 q3, q3, q0
vst1.32 {q2-q3}, [r0,:128]!
subs r2, r2, #8
bgt 1b
bx lr
endfunc

View File

@ -25,8 +25,7 @@
#include "avcodec.h"
/**
* Default values for ASS style.
* @defgroup ass_default
* @name Default values for ASS style
* @{
*/
#define ASS_DEFAULT_FONT "Arial"

View File

@ -2535,7 +2535,7 @@ typedef struct AVCodecContext {
#if FF_API_FLAC_GLOBAL_OPTS
/**
* @defgroup flac_opts FLAC options
* @name FLAC options
* @deprecated Use FLAC encoder private options instead.
* @{
*/
@ -2957,7 +2957,7 @@ typedef struct AVCodec {
const AVProfile *profiles; ///< array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN}
/**
* @defgroup framethreading Frame-level threading support functions.
* @name Frame-level threading support functions
* @{
*/
/**
@ -3915,7 +3915,7 @@ int av_get_bits_per_sample(enum CodecID codec_id);
#if FF_API_OLD_SAMPLE_FMT
/**
* @deprecated Use av_get_bits_per_sample_fmt() instead.
* @deprecated Use av_get_bytes_per_sample() instead.
*/
attribute_deprecated
int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt);

View File

@ -43,11 +43,7 @@ const uint8_t ff_log2_run[41]={
void align_put_bits(PutBitContext *s)
{
#ifdef ALT_BITSTREAM_WRITER
put_bits(s,( - s->index) & 7,0);
#else
put_bits(s,s->bit_left & 7,0);
#endif
}
void ff_put_string(PutBitContext *pb, const char *string, int terminate_string)

View File

@ -507,7 +507,7 @@ typedef struct H264Context{
int cabac_init_idc;
/**
* @defgroup multithreading Members for slice based multithreading
* @name Members for slice based multithreading
* @{
*/
struct H264Context *thread_context[MAX_THREADS];

View File

@ -2170,9 +2170,7 @@ static int encode_thread(AVCodecContext *c, void *arg){
int d= 100 / s->avctx->error_rate;
if(r % d == 0){
current_packet_size=0;
#ifndef ALT_BITSTREAM_WRITER
s->pb.buf_ptr= s->ptr_lastgob;
#endif
assert(put_bits_ptr(&s->pb) == s->ptr_lastgob);
}
}

View File

@ -36,19 +36,10 @@
#include "mathops.h"
#include "config.h"
//#define ALT_BITSTREAM_WRITER
//#define ALIGNED_BITSTREAM_WRITER
/* buf and buf_end must be present and used by every alternative writer. */
typedef struct PutBitContext {
#ifdef ALT_BITSTREAM_WRITER
uint8_t *buf, *buf_end;
int index;
#else
uint32_t bit_buf;
int bit_left;
uint8_t *buf, *buf_ptr, *buf_end;
#endif
int size_in_bits;
} PutBitContext;
@ -68,15 +59,9 @@ static inline void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_s
s->size_in_bits= 8*buffer_size;
s->buf = buffer;
s->buf_end = s->buf + buffer_size;
#ifdef ALT_BITSTREAM_WRITER
s->index=0;
((uint32_t*)(s->buf))[0]=0;
// memset(buffer, 0, buffer_size);
#else
s->buf_ptr = s->buf;
s->bit_left=32;
s->bit_buf=0;
#endif
}
/**
@ -84,11 +69,7 @@ static inline void init_put_bits(PutBitContext *s, uint8_t *buffer, int buffer_s
*/
static inline int put_bits_count(PutBitContext *s)
{
#ifdef ALT_BITSTREAM_WRITER
return s->index;
#else
return (s->buf_ptr - s->buf) * 8 + 32 - s->bit_left;
#endif
}
/**
@ -96,9 +77,6 @@ static inline int put_bits_count(PutBitContext *s)
*/
static inline void flush_put_bits(PutBitContext *s)
{
#ifdef ALT_BITSTREAM_WRITER
align_put_bits(s);
#else
#ifndef BITSTREAM_WRITER_LE
s->bit_buf<<= s->bit_left;
#endif
@ -115,10 +93,9 @@ static inline void flush_put_bits(PutBitContext *s)
}
s->bit_left=32;
s->bit_buf=0;
#endif
}
#if defined(ALT_BITSTREAM_WRITER) || defined(BITSTREAM_WRITER_LE)
#ifdef BITSTREAM_WRITER_LE
#define align_put_bits align_put_bits_unsupported_here
#define ff_put_string ff_put_string_unsupported_here
#define ff_copy_bits ff_copy_bits_unsupported_here
@ -148,7 +125,6 @@ void ff_copy_bits(PutBitContext *pb, const uint8_t *src, int length);
* Use put_bits32 to write 32 bits.
*/
static inline void put_bits(PutBitContext *s, int n, unsigned int value)
#ifndef ALT_BITSTREAM_WRITER
{
unsigned int bit_buf;
int bit_left;
@ -164,12 +140,7 @@ static inline void put_bits(PutBitContext *s, int n, unsigned int value)
#ifdef BITSTREAM_WRITER_LE
bit_buf |= value << (32 - bit_left);
if (n >= bit_left) {
#if !HAVE_FAST_UNALIGNED
if (3 & (intptr_t) s->buf_ptr) {
AV_WL32(s->buf_ptr, bit_buf);
} else
#endif
*(uint32_t *)s->buf_ptr = av_le2ne32(bit_buf);
AV_WL32(s->buf_ptr, bit_buf);
s->buf_ptr+=4;
bit_buf = (bit_left==32)?0:value >> bit_left;
bit_left+=32;
@ -182,12 +153,7 @@ static inline void put_bits(PutBitContext *s, int n, unsigned int value)
} else {
bit_buf<<=bit_left;
bit_buf |= value >> (n - bit_left);
#if !HAVE_FAST_UNALIGNED
if (3 & (intptr_t) s->buf_ptr) {
AV_WB32(s->buf_ptr, bit_buf);
} else
#endif
*(uint32_t *)s->buf_ptr = av_be2ne32(bit_buf);
AV_WB32(s->buf_ptr, bit_buf);
//printf("bitbuf = %08x\n", bit_buf);
s->buf_ptr+=4;
bit_left+=32 - n;
@ -198,70 +164,6 @@ static inline void put_bits(PutBitContext *s, int n, unsigned int value)
s->bit_buf = bit_buf;
s->bit_left = bit_left;
}
#else /* ALT_BITSTREAM_WRITER defined */
{
# ifdef ALIGNED_BITSTREAM_WRITER
# if ARCH_X86
__asm__ volatile(
"movl %0, %%ecx \n\t"
"xorl %%eax, %%eax \n\t"
"shrdl %%cl, %1, %%eax \n\t"
"shrl %%cl, %1 \n\t"
"movl %0, %%ecx \n\t"
"shrl $3, %%ecx \n\t"
"andl $0xFFFFFFFC, %%ecx \n\t"
"bswapl %1 \n\t"
"orl %1, (%2, %%ecx) \n\t"
"bswapl %%eax \n\t"
"addl %3, %0 \n\t"
"movl %%eax, 4(%2, %%ecx) \n\t"
: "=&r" (s->index), "=&r" (value)
: "r" (s->buf), "r" (n), "0" (s->index), "1" (value<<(-n))
: "%eax", "%ecx"
);
# else
int index= s->index;
uint32_t *ptr= ((uint32_t *)s->buf)+(index>>5);
value<<= 32-n;
ptr[0] |= av_be2ne32(value>>(index&31));
ptr[1] = av_be2ne32(value<<(32-(index&31)));
//if(n>24) printf("%d %d\n", n, value);
index+= n;
s->index= index;
# endif
# else //ALIGNED_BITSTREAM_WRITER
# if ARCH_X86
__asm__ volatile(
"movl $7, %%ecx \n\t"
"andl %0, %%ecx \n\t"
"addl %3, %%ecx \n\t"
"negl %%ecx \n\t"
"shll %%cl, %1 \n\t"
"bswapl %1 \n\t"
"movl %0, %%ecx \n\t"
"shrl $3, %%ecx \n\t"
"orl %1, (%%ecx, %2) \n\t"
"addl %3, %0 \n\t"
"movl $0, 4(%%ecx, %2) \n\t"
: "=&r" (s->index), "=&r" (value)
: "r" (s->buf), "r" (n), "0" (s->index), "1" (value)
: "%ecx"
);
# else
int index= s->index;
uint32_t *ptr= (uint32_t*)(((uint8_t *)s->buf)+(index>>3));
ptr[0] |= av_be2ne32(value<<(32-n-(index&7) ));
ptr[1] = 0;
//if(n>24) printf("%d %d\n", n, value);
index+= n;
s->index= index;
# endif
# endif //!ALIGNED_BITSTREAM_WRITER
}
#endif
static inline void put_sbits(PutBitContext *pb, int n, int32_t value)
{
@ -292,11 +194,7 @@ static void av_unused put_bits32(PutBitContext *s, uint32_t value)
*/
static inline uint8_t* put_bits_ptr(PutBitContext *s)
{
#ifdef ALT_BITSTREAM_WRITER
return s->buf + (s->index>>3);
#else
return s->buf_ptr;
#endif
}
/**
@ -306,13 +204,8 @@ static inline uint8_t* put_bits_ptr(PutBitContext *s)
static inline void skip_put_bytes(PutBitContext *s, int n)
{
assert((put_bits_count(s)&7)==0);
#ifdef ALT_BITSTREAM_WRITER
FIXME may need some cleaning of the buffer
s->index += n<<3;
#else
assert(s->bit_left==32);
s->buf_ptr += n;
#endif
}
/**
@ -322,13 +215,9 @@ static inline void skip_put_bytes(PutBitContext *s, int n)
*/
static inline void skip_put_bits(PutBitContext *s, int n)
{
#ifdef ALT_BITSTREAM_WRITER
s->index += n;
#else
s->bit_left -= n;
s->buf_ptr-= 4*(s->bit_left>>5);
s->bit_left &= 31;
#endif
}
/**

View File

@ -38,14 +38,14 @@
* QCELP unpacked data frame
*/
typedef struct {
/// @defgroup qcelp_codebook_parameters QCELP excitation codebook parameters
/// @name QCELP excitation codebook parameters
/// @{
uint8_t cbsign[16]; ///!< sign of the codebook gain for each codebook subframe
uint8_t cbgain[16]; ///!< unsigned codebook gain for each codebook subframe
uint8_t cindex[16]; ///!< codebook index for each codebook subframe
/// @}
/// @defgroup qcelp_pitch_parameters QCELP pitch prediction parameters
/// @name QCELP pitch prediction parameters
/// @{
uint8_t plag[4]; ///!< pitch lag for each pitch subframe
uint8_t pfrac[4]; ///!< fractional pitch lag for each pitch subframe

View File

@ -62,8 +62,10 @@ static const int rv34_mb_type_to_lavc[12] = {
static RV34VLC intra_vlcs[NUM_INTRA_TABLES], inter_vlcs[NUM_INTER_TABLES];
static int rv34_decode_mv(RV34DecContext *r, int block_type);
/**
* @defgroup vlc RV30/40 VLC generating functions
* @name RV30/40 VLC generating functions
* @{
*/
@ -171,7 +173,7 @@ static av_cold void rv34_init_tables(void)
/**
* @defgroup transform RV30/40 inverse transform functions
* @name RV30/40 inverse transform functions
* @{
*/
@ -246,7 +248,7 @@ static void rv34_inv_transform_noround(DCTELEM *block){
/**
* @defgroup block RV30/40 4x4 block decoding functions
* @name RV30/40 4x4 block decoding functions
* @{
*/
@ -393,7 +395,7 @@ static inline void rv34_dequant4x4_16x16(DCTELEM *block, int Qdc, int Q)
/**
* @defgroup rv3040_bitstream RV30/40 bitstream parsing
* @name RV30/40 bitstream parsing
* @{
*/
@ -432,10 +434,76 @@ static inline int rv34_decode_dquant(GetBitContext *gb, int quant)
return get_bits(gb, 5);
}
/**
* Decode macroblock header and return CBP in case of success, -1 otherwise.
*/
static int rv34_decode_mb_header(RV34DecContext *r, int8_t *intra_types)
{
MpegEncContext *s = &r->s;
GetBitContext *gb = &s->gb;
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
int i, t;
if(!r->si.type){
r->is16 = get_bits1(gb);
if(!r->is16 && !r->rv30){
if(!get_bits1(gb))
av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n");
}
s->current_picture_ptr->mb_type[mb_pos] = r->is16 ? MB_TYPE_INTRA16x16 : MB_TYPE_INTRA;
r->block_type = r->is16 ? RV34_MB_TYPE_INTRA16x16 : RV34_MB_TYPE_INTRA;
}else{
r->block_type = r->decode_mb_info(r);
if(r->block_type == -1)
return -1;
s->current_picture_ptr->mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type];
r->mb_type[mb_pos] = r->block_type;
if(r->block_type == RV34_MB_SKIP){
if(s->pict_type == AV_PICTURE_TYPE_P)
r->mb_type[mb_pos] = RV34_MB_P_16x16;
if(s->pict_type == AV_PICTURE_TYPE_B)
r->mb_type[mb_pos] = RV34_MB_B_DIRECT;
}
r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->mb_type[mb_pos]);
rv34_decode_mv(r, r->block_type);
if(r->block_type == RV34_MB_SKIP){
fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0]));
return 0;
}
r->chroma_vlc = 1;
r->luma_vlc = 0;
}
if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){
if(r->is16){
t = get_bits(gb, 2);
fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
r->luma_vlc = 2;
}else{
if(r->decode_intra_types(r, gb, intra_types) < 0)
return -1;
r->luma_vlc = 1;
}
r->chroma_vlc = 0;
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
}else{
for(i = 0; i < 16; i++)
intra_types[(i & 3) + (i>>2) * r->intra_types_stride] = 0;
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
if(r->mb_type[mb_pos] == RV34_MB_P_MIX16x16){
r->is16 = 1;
r->chroma_vlc = 1;
r->luma_vlc = 2;
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
}
}
return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
}
/** @} */ //bitstream functions
/**
* @defgroup mv motion vector related code (prediction, reconstruction, motion compensation)
* @name motion vector related code (prediction, reconstruction, motion compensation)
* @{
*/
@ -885,7 +953,7 @@ static int rv34_decode_mv(RV34DecContext *r, int block_type)
/** @} */ // mv group
/**
* @defgroup recons Macroblock reconstruction functions
* @name Macroblock reconstruction functions
* @{
*/
/** mapping of RV30/40 intra prediction types to standard H.264 types */
@ -1027,79 +1095,6 @@ static void rv34_output_macroblock(RV34DecContext *r, int8_t *intra_types, int c
}
}
/** @} */ // recons group
/**
* @addtogroup bitstream
* Decode macroblock header and return CBP in case of success, -1 otherwise.
*/
static int rv34_decode_mb_header(RV34DecContext *r, int8_t *intra_types)
{
MpegEncContext *s = &r->s;
GetBitContext *gb = &s->gb;
int mb_pos = s->mb_x + s->mb_y * s->mb_stride;
int i, t;
if(!r->si.type){
r->is16 = get_bits1(gb);
if(!r->is16 && !r->rv30){
if(!get_bits1(gb))
av_log(s->avctx, AV_LOG_ERROR, "Need DQUANT\n");
}
s->current_picture_ptr->mb_type[mb_pos] = r->is16 ? MB_TYPE_INTRA16x16 : MB_TYPE_INTRA;
r->block_type = r->is16 ? RV34_MB_TYPE_INTRA16x16 : RV34_MB_TYPE_INTRA;
}else{
r->block_type = r->decode_mb_info(r);
if(r->block_type == -1)
return -1;
s->current_picture_ptr->mb_type[mb_pos] = rv34_mb_type_to_lavc[r->block_type];
r->mb_type[mb_pos] = r->block_type;
if(r->block_type == RV34_MB_SKIP){
if(s->pict_type == AV_PICTURE_TYPE_P)
r->mb_type[mb_pos] = RV34_MB_P_16x16;
if(s->pict_type == AV_PICTURE_TYPE_B)
r->mb_type[mb_pos] = RV34_MB_B_DIRECT;
}
r->is16 = !!IS_INTRA16x16(s->current_picture_ptr->mb_type[mb_pos]);
rv34_decode_mv(r, r->block_type);
if(r->block_type == RV34_MB_SKIP){
fill_rectangle(intra_types, 4, 4, r->intra_types_stride, 0, sizeof(intra_types[0]));
return 0;
}
r->chroma_vlc = 1;
r->luma_vlc = 0;
}
if(IS_INTRA(s->current_picture_ptr->mb_type[mb_pos])){
if(r->is16){
t = get_bits(gb, 2);
fill_rectangle(intra_types, 4, 4, r->intra_types_stride, t, sizeof(intra_types[0]));
r->luma_vlc = 2;
}else{
if(r->decode_intra_types(r, gb, intra_types) < 0)
return -1;
r->luma_vlc = 1;
}
r->chroma_vlc = 0;
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
}else{
for(i = 0; i < 16; i++)
intra_types[(i & 3) + (i>>2) * r->intra_types_stride] = 0;
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 1);
if(r->mb_type[mb_pos] == RV34_MB_P_MIX16x16){
r->is16 = 1;
r->chroma_vlc = 1;
r->luma_vlc = 2;
r->cur_vlcs = choose_vlc_set(r->si.quant, r->si.vlc_set, 0);
}
}
return rv34_decode_cbp(gb, r->cur_vlcs, r->is16);
}
/**
* @addtogroup recons
* @{
*/
/**
* mask for retrieving all bits in coded block pattern
* corresponding to one 8x8 block
@ -1109,6 +1104,8 @@ static int rv34_decode_mb_header(RV34DecContext *r, int8_t *intra_types)
#define U_CBP_MASK 0x0F0000
#define V_CBP_MASK 0xF00000
/** @} */ // recons group
static void rv34_apply_differences(RV34DecContext *r, int cbp)
{

View File

@ -65,7 +65,7 @@ static const uint8_t rv40_luma_dc_quant[2][32] = {
};
/**
* @defgroup loopfilter coefficients used by the RV40 loop filter
* @name Coefficients used by the RV40 loop filter
* @{
*/
/**

View File

@ -42,7 +42,7 @@ typedef struct {
uint8_t bs_xover_band;
/**
* @defgroup bs_header_extra_1 Variables associated with bs_header_extra_1
* @name Variables associated with bs_header_extra_1
* @{
*/
uint8_t bs_freq_scale;
@ -58,7 +58,7 @@ typedef struct {
*/
typedef struct {
/**
* @defgroup aac_bitstream Main bitstream data variables
* @name Main bitstream data variables
* @{
*/
unsigned bs_frame_class;
@ -74,7 +74,7 @@ typedef struct {
/** @} */
/**
* @defgroup state State variables
* @name State variables
* @{
*/
DECLARE_ALIGNED(16, float, synthesis_filterbank_samples)[SBR_SYNTHESIS_BUF_SIZE];
@ -116,7 +116,7 @@ typedef struct {
SpectrumParameters spectrum_params;
int bs_amp_res_header;
/**
* @defgroup bs_header_extra_2 variables associated with bs_header_extra_2
* @name Variables associated with bs_header_extra_2
* @{
*/
unsigned bs_limiter_bands;

View File

@ -56,7 +56,7 @@ void write_##type##_2d_array(const void *arg, int len, int len2)\
}
/**
* @defgroup printfuncs Predefined functions for printing tables
* @name Predefined functions for printing tables
*
* \{
*/

View File

@ -40,7 +40,7 @@
/***********************************************************************/
/**
* @defgroup vc1bitplane VC-1 Bitplane decoding
* @name VC-1 Bitplane decoding
* @see 8.7, p56
* @{
*/

View File

@ -137,7 +137,7 @@ static int vc1_init_common(VC1Context *v)
/***********************************************************************/
/**
* @defgroup vc1bitplane VC-1 Bitplane decoding
* @name VC-1 Bitplane decoding
* @see 8.7, p56
* @{
*/
@ -774,7 +774,7 @@ static void vc1_mc_4mv_chroma(VC1Context *v)
/***********************************************************************/
/**
* @defgroup vc1block VC-1 Block-level functions
* @name VC-1 Block-level functions
* @see 7.1.4, p91 and 8.1.1.7, p(1)04
* @{
*/
@ -1512,7 +1512,7 @@ static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n,
/** @} */ // Block group
/**
* @defgroup vc1_std_mb VC1 Macroblock-level functions in Simple/Main Profiles
* @name VC1 Macroblock-level functions in Simple/Main Profiles
* @see 7.1.4, p91 and 8.1.1.7, p(1)04
* @{
*/

View File

@ -128,9 +128,7 @@ static const struct frame_type_desc {
*/
typedef struct {
/**
* @defgroup struct_global Global values
* Global values, specified in the stream header / extradata or used
* all over.
* @name Global values specified in the stream header / extradata or used all over.
* @{
*/
GetBitContext gb; ///< packet bitreader. During decoder init,
@ -182,8 +180,9 @@ typedef struct {
/**
* @}
* @defgroup struct_packet Packet values
* Packet values, specified in the packet header or related to a packet.
*
* @name Packet values specified in the packet header or related to a packet.
*
* A packet is considered to be a single unit of data provided to this
* decoder by the demuxer.
* @{
@ -213,7 +212,8 @@ typedef struct {
/**
* @}
* @defgroup struct_frame Frame and superframe values
*
* @name Frame and superframe values
* Superframe and frame data - these can change from frame to frame,
* although some of them do in that case serve as a cache / history for
* the next frame or superframe.
@ -256,7 +256,9 @@ typedef struct {
float synth_history[MAX_LSPS]; ///< see #excitation_history
/**
* @}
* @defgroup post_filter Postfilter values
*
* @name Postfilter values
*
* Variables used for postfilter implementation, mostly history for
* smoothing and so on, and context variables for FFT/iFFT.
* @{
@ -432,7 +434,7 @@ static av_cold int wmavoice_decode_init(AVCodecContext *ctx)
}
/**
* @defgroup postfilter Postfilter functions
* @name Postfilter functions
* Postfilter functions (gain control, wiener denoise filter, DC filter,
* kalman smoothening, plus surrounding code to wrap it)
* @{
@ -825,7 +827,7 @@ static void dequant_lsps(double *lsps, int num,
}
/**
* @defgroup lsp_dequant LSP dequantization routines
* @name LSP dequantization routines
* LSP dequantization routines, for 10/16LSPs and independent/residual coding.
* @note we assume enough bits are available, caller should check.
* lsp10i() consumes 24 bits; lsp10r() consumes an additional 24 bits;
@ -969,7 +971,7 @@ static void dequant_lsp16r(GetBitContext *gb,
/**
* @}
* @defgroup aw Pitch-adaptive window coding functions
* @name Pitch-adaptive window coding functions
* The next few functions are for pitch-adaptive window coding.
* @{
*/

View File

@ -341,6 +341,7 @@ OBJS-$(CONFIG_UDP_PROTOCOL) += udp.o
OBJS-$(CONFIG_ALSA_INDEV) += timefilter.o
OBJS-$(CONFIG_JACK_INDEV) += timefilter.o
EXAMPLES = metadata
TESTPROGS = timefilter
include $(SRC_PATH)/subdir.mak

View File

@ -48,63 +48,70 @@ const char *avformat_license(void);
struct AVFormatContext;
/*
* Public Metadata API.
/**
* @defgroup metadata_api Public Metadata API
* @{
* The metadata API allows libavformat to export metadata tags to a client
* application using a sequence of key/value pairs. Like all strings in FFmpeg,
* metadata must be stored as UTF-8 encoded Unicode. Note that metadata
* exported by demuxers isn't checked to be valid UTF-8 in most cases.
* Important concepts to keep in mind:
* 1. Keys are unique; there can never be 2 tags with the same key. This is
* - Keys are unique; there can never be 2 tags with the same key. This is
* also meant semantically, i.e., a demuxer should not knowingly produce
* several keys that are literally different but semantically identical.
* E.g., key=Author5, key=Author6. In this example, all authors must be
* placed in the same tag.
* 2. Metadata is flat, not hierarchical; there are no subtags. If you
* - Metadata is flat, not hierarchical; there are no subtags. If you
* want to store, e.g., the email address of the child of producer Alice
* and actor Bob, that could have key=alice_and_bobs_childs_email_address.
* 3. Several modifiers can be applied to the tag name. This is done by
* - Several modifiers can be applied to the tag name. This is done by
* appending a dash character ('-') and the modifier name in the order
* they appear in the list below -- e.g. foo-eng-sort, not foo-sort-eng.
* a) language -- a tag whose value is localized for a particular language
* - language -- a tag whose value is localized for a particular language
* is appended with the ISO 639-2/B 3-letter language code.
* For example: Author-ger=Michael, Author-eng=Mike
* The original/default language is in the unqualified "Author" tag.
* A demuxer should set a default if it sets any translated tag.
* b) sorting -- a modified version of a tag that should be used for
* - sorting -- a modified version of a tag that should be used for
* sorting will have '-sort' appended. E.g. artist="The Beatles",
* artist-sort="Beatles, The".
*
* 4. Demuxers attempt to export metadata in a generic format, however tags
* - Demuxers attempt to export metadata in a generic format, however tags
* with no generic equivalents are left as they are stored in the container.
* Follows a list of generic tag names:
*
* album -- name of the set this work belongs to
* album_artist -- main creator of the set/album, if different from artist.
* e.g. "Various Artists" for compilation albums.
* artist -- main creator of the work
* comment -- any additional description of the file.
* composer -- who composed the work, if different from artist.
* copyright -- name of copyright holder.
* creation_time-- date when the file was created, preferably in ISO 8601.
* date -- date when the work was created, preferably in ISO 8601.
* disc -- number of a subset, e.g. disc in a multi-disc collection.
* encoder -- name/settings of the software/hardware that produced the file.
* encoded_by -- person/group who created the file.
* filename -- original name of the file.
* genre -- <self-evident>.
* language -- main language in which the work is performed, preferably
* in ISO 639-2 format. Multiple languages can be specified by
* separating them with commas.
* performer -- artist who performed the work, if different from artist.
* E.g for "Also sprach Zarathustra", artist would be "Richard
* Strauss" and performer "London Philharmonic Orchestra".
* publisher -- name of the label/publisher.
* service_name -- name of the service in broadcasting (channel name).
* service_provider -- name of the service provider in broadcasting.
* title -- name of the work.
* track -- number of this work in the set, can be in form current/total.
* variant_bitrate -- the total bitrate of the bitrate variant that the current stream is part of
@verbatim
album -- name of the set this work belongs to
album_artist -- main creator of the set/album, if different from artist.
e.g. "Various Artists" for compilation albums.
artist -- main creator of the work
comment -- any additional description of the file.
composer -- who composed the work, if different from artist.
copyright -- name of copyright holder.
creation_time-- date when the file was created, preferably in ISO 8601.
date -- date when the work was created, preferably in ISO 8601.
disc -- number of a subset, e.g. disc in a multi-disc collection.
encoder -- name/settings of the software/hardware that produced the file.
encoded_by -- person/group who created the file.
filename -- original name of the file.
genre -- <self-evident>.
language -- main language in which the work is performed, preferably
in ISO 639-2 format. Multiple languages can be specified by
separating them with commas.
performer -- artist who performed the work, if different from artist.
E.g for "Also sprach Zarathustra", artist would be "Richard
Strauss" and performer "London Philharmonic Orchestra".
publisher -- name of the label/publisher.
service_name -- name of the service in broadcasting (channel name).
service_provider -- name of the service provider in broadcasting.
title -- name of the work.
track -- number of this work in the set, can be in form current/total.
variant_bitrate -- the total bitrate of the bitrate variant that the current stream is part of
@endverbatim
*
* Look in the examples section for an application example how to use the Metadata API.
*
* @}
*/
#if FF_API_OLD_METADATA2

View File

@ -861,7 +861,7 @@ static int get_stream_idx(int *d){
}
}
static int avi_sync(AVFormatContext *s)
static int avi_sync(AVFormatContext *s, int exit_early)
{
AVIContext *avi = s->priv_data;
AVIOContext *pb = s->pb;
@ -941,7 +941,9 @@ start_sync:
if( (st->discard >= AVDISCARD_DEFAULT && size==0)
/*|| (st->discard >= AVDISCARD_NONKEY && !(pkt->flags & AV_PKT_FLAG_KEY))*/ //FIXME needs a little reordering
|| st->discard >= AVDISCARD_ALL){
ast->frame_offset += get_duration(ast, size);
if (!exit_early) {
ast->frame_offset += get_duration(ast, size);
}
avio_skip(pb, size);
goto start_sync;
}
@ -961,6 +963,8 @@ start_sync:
(d[2] == 'd' && d[3] == 'c') ||
(d[2] == 'w' && d[3] == 'b')*/) {
if (exit_early)
return 0;
//av_log(s, AV_LOG_DEBUG, "OK\n");
if(d[2]*256+d[3] == ast->prefix)
ast->prefix_count++;
@ -1165,7 +1169,7 @@ resync:
return size;
}
if ((err = avi_sync(s)) < 0)
if ((err = avi_sync(s, 0)) < 0)
return err;
goto resync;
}
@ -1179,13 +1183,22 @@ static int avi_read_idx1(AVFormatContext *s, int size)
int nb_index_entries, i;
AVStream *st;
AVIStream *ast;
unsigned int index, tag, flags, pos, len;
unsigned int index, tag, flags, pos, len, first_packet = 1;
unsigned last_pos= -1;
int64_t idx1_pos, first_packet_pos = 0, data_offset = 0;
nb_index_entries = size / 16;
if (nb_index_entries <= 0)
return -1;
idx1_pos = avio_tell(pb);
avio_seek(pb, avi->movi_list+4, SEEK_SET);
if (avi_sync(s, 1) == 0) {
first_packet_pos = avio_tell(pb) - 8;
}
avi->stream_index = -1;
avio_seek(pb, idx1_pos, SEEK_SET);
/* Read the entries and sort them in each stream component. */
for(i = 0; i < nb_index_entries; i++) {
tag = avio_rl32(pb);
@ -1194,9 +1207,6 @@ static int avi_read_idx1(AVFormatContext *s, int size)
len = avio_rl32(pb);
av_dlog(s, "%d: tag=0x%x flags=0x%x pos=0x%x len=%d/",
i, tag, flags, pos, len);
if(i==0 && pos > avi->movi_list)
avi->movi_list= 0; //FIXME better check
pos += avi->movi_list;
index = ((tag & 0xff) - '0') * 10;
index += ((tag >> 8) & 0xff) - '0';
@ -1205,9 +1215,14 @@ static int avi_read_idx1(AVFormatContext *s, int size)
st = s->streams[index];
ast = st->priv_data;
#if defined(DEBUG_SEEK)
av_log(s, AV_LOG_DEBUG, "%d cum_len=%"PRId64"\n", len, ast->cum_len);
#endif
if(first_packet && first_packet_pos && len) {
data_offset = first_packet_pos - pos;
first_packet = 0;
}
pos += data_offset;
av_dlog(s, "%d cum_len=%"PRId64"\n", len, ast->cum_len);
if(url_feof(pb))
return -1;

View File

@ -145,7 +145,7 @@ typedef struct URLPollEntry {
attribute_deprecated int url_poll(URLPollEntry *poll_table, int n, int timeout);
/**
* @defgroup open_modes URL open modes
* @name URL open modes
* The flags argument to url_open and cosins must be one of the following
* constants, optionally ORed with other flags.
* @{
@ -176,7 +176,7 @@ extern URLInterruptCB *url_interrupt_cb;
/**
* @defgroup old_url_funcs Old url_* functions
* @deprecated use the buffered API based on AVIOContext instead
* The following functions are deprecated. Use the buffered API based on #AVIOContext instead.
* @{
*/
attribute_deprecated int url_open_protocol (URLContext **puc, struct URLProtocol *up,
@ -236,7 +236,7 @@ attribute_deprecated AVIOContext *av_alloc_put_byte(
/**
* @defgroup old_avio_funcs Old put_/get_*() functions
* @deprecated use the avio_ -prefixed functions instead.
* The following functions are deprecated. Use the "avio_"-prefixed functions instead.
* @{
*/
attribute_deprecated int get_buffer(AVIOContext *s, unsigned char *buf, int size);
@ -273,7 +273,7 @@ attribute_deprecated int64_t av_url_read_fseek (AVIOContext *h, int stream_in
/**
* @defgroup old_url_f_funcs Old url_f* functions
* @deprecated use the avio_ -prefixed functions instead.
* The following functions are deprecated, use the "avio_"-prefixed functions instead.
* @{
*/
attribute_deprecated int url_fopen( AVIOContext **s, const char *url, int flags);
@ -471,7 +471,7 @@ void avio_flush(AVIOContext *s);
int avio_read(AVIOContext *s, unsigned char *buf, int size);
/**
* @defgroup avio_read Functions for reading from AVIOContext.
* @name Functions for reading from AVIOContext
* @{
*
* @note return 0 if EOF, so you cannot use it if EOF handling is
@ -515,7 +515,7 @@ int avio_get_str16be(AVIOContext *pb, int maxlen, char *buf, int buflen);
/**
* @defgroup open_modes URL open modes
* @name URL open modes
* The flags argument to avio_open must be one of the following
* constants, optionally ORed with other flags.
* @{

View File

@ -0,0 +1,56 @@
/*
* Copyright (c) 2011 Reinhard Tartler
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* @file
* @example libavformat/metadata-example.c
* Shows how the metadata API can be used in application programs.
*/
#include <stdio.h>
#include <libavformat/avformat.h>
#include <libavutil/dict.h>
int main (int argc, char **argv)
{
AVFormatContext *fmt_ctx = NULL;
AVDictionaryEntry *tag = NULL;
int ret;
if (argc != 2) {
printf("usage: %s <input_file>\n"
"example program to demonstrate the use of the libavformat metadata API.\n"
"\n", argv[0]);
return 1;
}
av_register_all();
if ((ret = avformat_open_input(&fmt_ctx, argv[1], NULL, NULL)))
return ret;
while ((tag = av_dict_get(fmt_ctx->metadata, "", tag, AV_DICT_IGNORE_SUFFIX)))
printf("%s=%s\n", tag->key, tag->value);
avformat_free_context(fmt_ctx);
return 0;
}

View File

@ -138,7 +138,7 @@ int ff_rtmp_packet_write(URLContext *h, RTMPPacket *p,
void ff_rtmp_packet_dump(void *ctx, RTMPPacket *p);
/**
* @defgroup amffuncs functions used to work with AMF format (which is also used in .flv)
* @name Functions used to work with the AMF format (which is also used in .flv)
* @see amf_* funcs in libavformat/flvdec.c
* @{
*/

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@ -464,10 +464,16 @@ int av_open_input_stream(AVFormatContext **ic_ptr,
err = AVERROR(ENOMEM);
goto fail;
}
ic->pb = pb;
if (pb && fmt && fmt->flags & AVFMT_NOFILE)
av_log(ic, AV_LOG_WARNING, "Custom AVIOContext makes no sense and "
"will be ignored with AVFMT_NOFILE format.\n");
else
ic->pb = pb;
err = avformat_open_input(ic_ptr, filename, fmt, &opts);
err = avformat_open_input(&ic, filename, fmt, &opts);
ic->pb = ic->pb ? ic->pb : pb; // don't leak custom pb if it wasn't set above
*ic_ptr = ic;
fail:
av_dict_free(&opts);
return err;

View File

@ -24,7 +24,7 @@
#include <stdint.h>
/** @defgroup errflags Error flags returned by av_lzo1x_decode
/** @name Error flags returned by av_lzo1x_decode
* \{ */
//! end of the input buffer reached before decoding finished
#define AV_LZO_INPUT_DEPLETED 1