X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=modules%2Fpacketizer%2Fmpeg4video.c;h=82bcd5d10befb35acf2e0ab65c830f69cada764e;hb=724c4e4a7df2aee1d37c9f6ac59f32b64ac70f7b;hp=453e7b63e473b379cea4640e219a98a2e4706143;hpb=b876d12e0e0cd09278ba26a25094644c07130a24;p=vlc diff --git a/modules/packetizer/mpeg4video.c b/modules/packetizer/mpeg4video.c index 453e7b63e4..82bcd5d10b 100644 --- a/modules/packetizer/mpeg4video.c +++ b/modules/packetizer/mpeg4video.c @@ -26,15 +26,20 @@ /***************************************************************************** * Preamble *****************************************************************************/ -#include /* malloc(), free() */ -#include -#include -#include -#include /* hmmm, just for INPUT_RATE_DEFAULT */ +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include +#include +#include +#include +#include -#include "vlc_bits.h" -#include "vlc_block_helper.h" +#include +#include +#include "packetizer_helper.h" /***************************************************************************** * Module descriptor @@ -42,28 +47,23 @@ static int Open ( vlc_object_t * ); static void Close( vlc_object_t * ); -vlc_module_begin(); - set_category( CAT_SOUT ); - set_subcategory( SUBCAT_SOUT_PACKETIZER ); - set_description( _("MPEG4 video packetizer") ); - set_capability( "packetizer", 50 ); - set_callbacks( Open, Close ); -vlc_module_end(); +vlc_module_begin () + set_category( CAT_SOUT ) + set_subcategory( SUBCAT_SOUT_PACKETIZER ) + set_description( N_("MPEG4 video packetizer") ) + set_capability( "packetizer", 50 ) + set_callbacks( Open, Close ) +vlc_module_end () /**************************************************************************** * Local prototypes ****************************************************************************/ -static block_t *Packetize( decoder_t *, block_t ** ); - struct decoder_sys_t { /* * Input properties */ - block_bytestream_t bytestream; - int i_state; - int i_offset; - uint8_t p_startcode[3]; + packetizer_t packetizer; /* * Common properties @@ -83,17 +83,18 @@ struct decoder_sys_t int i_last_incr; int i_last_incr_diff; - vlc_bool_t b_frame; + bool b_frame; /* Current frame being built */ block_t *p_frame; block_t **pp_last; }; -enum { - STATE_NOSYNC, - STATE_NEXT_SYNC -}; +static block_t *Packetize( decoder_t *, block_t ** ); + +static void PacketizeReset( void *p_private, bool b_broken ); +static block_t *PacketizeParse( void *p_private, bool *pb_ts_used, block_t * ); +static int PacketizeValidate( void *p_private, block_t * ); static block_t *ParseMPEGBlock( decoder_t *, block_t * ); static int ParseVOL( decoder_t *, es_format_t *, uint8_t *, int ); @@ -120,6 +121,8 @@ static int vlc_log2( unsigned int ); #define TEXTURE_SPATIAL_LAYER_START_CODE 0x1bf #define TEXTURE_SNR_LAYER_START_CODE 0x1c0 +static const uint8_t p_mp4v_startcode[3] = { 0x00, 0x00, 0x01 }; + /***************************************************************************** * Open: probe the packetizer and return score *****************************************************************************/ @@ -128,58 +131,32 @@ static int Open( vlc_object_t *p_this ) decoder_t *p_dec = (decoder_t*)p_this; decoder_sys_t *p_sys; - switch( p_dec->fmt_in.i_codec ) - { - case VLC_FOURCC( 'm', '4', 's', '2'): - case VLC_FOURCC( 'M', '4', 'S', '2'): - case VLC_FOURCC( 'm', 'p', '4', 's'): - case VLC_FOURCC( 'M', 'P', '4', 'S'): - case VLC_FOURCC( 'm', 'p', '4', 'v'): - case VLC_FOURCC( 'M', 'P', '4', 'V'): - case VLC_FOURCC( 'D', 'I', 'V', 'X'): - case VLC_FOURCC( 'd', 'i', 'v', 'x'): - case VLC_FOURCC( 'X', 'V', 'I', 'D'): - case VLC_FOURCC( 'X', 'v', 'i', 'D'): - case VLC_FOURCC( 'x', 'v', 'i', 'd'): - case VLC_FOURCC( 'D', 'X', '5', '0'): - case VLC_FOURCC( 'd', 'x', '5', '0'): - case VLC_FOURCC( 0x04, 0, 0, 0): - case VLC_FOURCC( '3', 'I', 'V', '2'): - case VLC_FOURCC( 'm', '4', 'c', 'c'): - case VLC_FOURCC( 'M', '4', 'C', 'C'): - break; - - default: - return VLC_EGENERIC; - } + if( p_dec->fmt_in.i_codec != VLC_CODEC_MP4V ) + return VLC_EGENERIC; /* Allocate the memory needed to store the decoder's structure */ if( ( p_dec->p_sys = p_sys = malloc( sizeof(decoder_sys_t) ) ) == NULL ) - { - msg_Err( p_dec, "out of memory" ); - return VLC_EGENERIC; - } + return VLC_ENOMEM; memset( p_sys, 0, sizeof(decoder_sys_t) ); /* Misc init */ - p_sys->i_state = STATE_NOSYNC; - p_sys->bytestream = block_BytestreamInit( p_dec ); - p_sys->p_startcode[0] = 0; - p_sys->p_startcode[1] = 0; - p_sys->p_startcode[2] = 1; - p_sys->i_offset = 0; + packetizer_Init( &p_sys->packetizer, + p_mp4v_startcode, sizeof(p_mp4v_startcode), + NULL, 0, + PacketizeReset, PacketizeParse, PacketizeValidate, p_dec ); + p_sys->p_frame = NULL; p_sys->pp_last = &p_sys->p_frame; /* Setup properties */ es_format_Copy( &p_dec->fmt_out, &p_dec->fmt_in ); - p_dec->fmt_out.i_codec = VLC_FOURCC( 'm', 'p', '4', 'v' ); + p_dec->fmt_out.i_codec = VLC_CODEC_MP4V; if( p_dec->fmt_in.i_extra ) { /* We have a vol */ p_dec->fmt_out.i_extra = p_dec->fmt_in.i_extra; - p_dec->fmt_out.p_extra = malloc( p_dec->fmt_in.i_extra ); + p_dec->fmt_out.p_extra = xmalloc( p_dec->fmt_in.i_extra ); memcpy( p_dec->fmt_out.p_extra, p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra ); @@ -206,10 +183,12 @@ static int Open( vlc_object_t *p_this ) static void Close( vlc_object_t *p_this ) { decoder_t *p_dec = (decoder_t*)p_this; + decoder_sys_t *p_sys = p_dec->p_sys; - block_BytestreamRelease( &p_dec->p_sys->bytestream ); - if( p_dec->p_sys->p_frame ) block_ChainRelease( p_dec->p_sys->p_frame ); - free( p_dec->p_sys ); + packetizer_Clean( &p_sys->packetizer ); + if( p_sys->p_frame ) + block_ChainRelease( p_sys->p_frame ); + free( p_sys ); } /**************************************************************************** @@ -218,112 +197,68 @@ static void Close( vlc_object_t *p_this ) static block_t *Packetize( decoder_t *p_dec, block_t **pp_block ) { decoder_sys_t *p_sys = p_dec->p_sys; - block_t *p_pic; - mtime_t i_pts, i_dts; - if( pp_block == NULL || *pp_block == NULL ) return NULL; + return packetizer_Packetize( &p_sys->packetizer, pp_block ); +} + +/***************************************************************************** + * Helpers: + *****************************************************************************/ +static void PacketizeReset( void *p_private, bool b_broken ) +{ + decoder_t *p_dec = p_private; + decoder_sys_t *p_sys = p_dec->p_sys; - if( (*pp_block)->i_flags & BLOCK_FLAG_DISCONTINUITY ) + if( b_broken ) { - p_sys->i_state = STATE_NOSYNC; - if( p_sys->p_frame ) block_ChainRelease( p_sys->p_frame ); + if( p_sys->p_frame ) + block_ChainRelease( p_sys->p_frame ); p_sys->p_frame = NULL; p_sys->pp_last = &p_sys->p_frame; - block_Release( *pp_block ); - return NULL; } - block_BytestreamPush( &p_sys->bytestream, *pp_block ); + p_sys->i_interpolated_pts = + p_sys->i_interpolated_dts = + p_sys->i_last_ref_pts = + p_sys->i_last_time_ref = + p_sys->i_time_ref = + p_sys->i_last_time = + p_sys->i_last_timeincr = 0; +} - while( 1 ) - { - switch( p_sys->i_state ) - { +static block_t *PacketizeParse( void *p_private, bool *pb_ts_used, block_t *p_block ) +{ + decoder_t *p_dec = p_private; + const mtime_t i_dts = p_block->i_dts; + const mtime_t i_pts = p_block->i_pts; - case STATE_NOSYNC: - if( block_FindStartcodeFromOffset( &p_sys->bytestream, - &p_sys->i_offset, p_sys->p_startcode, 3 ) == VLC_SUCCESS ) - { - p_sys->i_state = STATE_NEXT_SYNC; - } - - if( p_sys->i_offset ) - { - block_SkipBytes( &p_sys->bytestream, p_sys->i_offset ); - p_sys->i_offset = 0; - block_BytestreamFlush( &p_sys->bytestream ); - } - - if( p_sys->i_state != STATE_NEXT_SYNC ) - { - /* Need more data */ - return NULL; - } - - p_sys->i_offset = 1; /* To find next startcode */ - - case STATE_NEXT_SYNC: - /* TODO: If p_block == NULL, flush the buffer without checking the - * next sync word */ - - /* Find the next startcode */ - if( block_FindStartcodeFromOffset( &p_sys->bytestream, - &p_sys->i_offset, p_sys->p_startcode, 3 ) != VLC_SUCCESS ) - { - /* Need more data */ - return NULL; - } - - /* Get the new fragment and set the pts/dts */ - p_pic = block_New( p_dec, p_sys->i_offset ); - block_BytestreamFlush( &p_sys->bytestream ); - p_pic->i_pts = i_pts = p_sys->bytestream.p_block->i_pts; - p_pic->i_dts = i_dts = p_sys->bytestream.p_block->i_dts; - p_pic->i_rate = p_sys->bytestream.p_block->i_rate; - - block_GetBytes( &p_sys->bytestream, p_pic->p_buffer, - p_pic->i_buffer ); - - p_sys->i_offset = 0; - - /* Get picture if any */ - if( !( p_pic = ParseMPEGBlock( p_dec, p_pic ) ) ) - { - p_sys->i_state = STATE_NOSYNC; - break; - } - - /* don't reuse the same timestamps several times */ - if( i_pts == p_sys->bytestream.p_block->i_pts && - i_dts == p_sys->bytestream.p_block->i_dts ) - { - p_sys->bytestream.p_block->i_pts = 0; - p_sys->bytestream.p_block->i_dts = 0; - } - - /* We've just started the stream, wait for the first PTS. - * We discard here so we can still get the sequence header. */ - if( p_sys->i_interpolated_pts <= 0 && - p_sys->i_interpolated_dts <= 0 ) - { - msg_Dbg( p_dec, "need a starting pts/dts" ); - p_sys->i_state = STATE_NOSYNC; - block_Release( p_pic ); - break; - } - - /* When starting the stream we can have the first frame with - * a null DTS (i_interpolated_pts is initialized to 0) */ - if( !p_pic->i_dts ) p_pic->i_dts = p_pic->i_pts; - - /* So p_block doesn't get re-added several times */ - *pp_block = block_BytestreamPop( &p_sys->bytestream ); - - p_sys->i_state = STATE_NOSYNC; - - return p_pic; - } + block_t *p_au = ParseMPEGBlock( p_dec, p_block ); + + *pb_ts_used = p_au && p_au->i_dts == i_dts && p_au->i_pts == i_pts; + + return p_au; +} + + +static int PacketizeValidate( void *p_private, block_t *p_au ) +{ + decoder_t *p_dec = p_private; + decoder_sys_t *p_sys = p_dec->p_sys; + + /* We've just started the stream, wait for the first PTS. + * We discard here so we can still get the sequence header. */ + if( p_sys->i_interpolated_pts <= 0 && + p_sys->i_interpolated_dts <= 0 ) + { + msg_Dbg( p_dec, "need a starting pts/dts" ); + return VLC_EGENERIC; } + + /* When starting the stream we can have the first frame with + * a null DTS (i_interpolated_pts is initialized to 0) */ + if( !p_au->i_dts ) + p_au->i_dts = p_au->i_pts; + return VLC_SUCCESS; } /***************************************************************************** @@ -349,10 +284,10 @@ static block_t *ParseMPEGBlock( decoder_t *p_dec, block_t *p_frag ) if( p_frag->p_buffer[3] >= 0x20 && p_frag->p_buffer[3] <= 0x2f ) { /* Copy the complete VOL */ - if( p_dec->fmt_out.i_extra != p_frag->i_buffer ) + if( (size_t)p_dec->fmt_out.i_extra != p_frag->i_buffer ) { p_dec->fmt_out.p_extra = - realloc( p_dec->fmt_out.p_extra, p_frag->i_buffer ); + xrealloc( p_dec->fmt_out.p_extra, p_frag->i_buffer ); p_dec->fmt_out.i_extra = p_frag->i_buffer; } memcpy( p_dec->fmt_out.p_extra, p_frag->p_buffer, p_frag->i_buffer ); @@ -387,6 +322,7 @@ static block_t *ParseMPEGBlock( decoder_t *p_dec, block_t *p_frag ) { /* We are dealing with a VOP */ p_pic = block_ChainGather( p_sys->p_frame ); + p_pic->i_flags = p_sys->i_flags; p_pic->i_pts = p_sys->i_interpolated_pts; p_pic->i_dts = p_sys->i_interpolated_dts; @@ -512,7 +448,7 @@ static int ParseVOP( decoder_t *p_dec, block_t *p_vop ) break; case 2: p_sys->i_flags = BLOCK_FLAG_TYPE_B; - p_sys->b_frame = VLC_TRUE; + p_sys->b_frame = true; break; case 3: /* gni ? */ p_sys->i_flags = BLOCK_FLAG_TYPE_PB; @@ -551,16 +487,14 @@ static int ParseVOP( decoder_t *p_dec, block_t *p_vop ) p_dec->fmt_in.video.i_frame_rate > 0 && p_dec->fmt_in.video.i_frame_rate_base > 0 ) { - p_sys->i_interpolated_pts += I64C(1000000) * - p_dec->fmt_in.video.i_frame_rate_base * - p_vop->i_rate / INPUT_RATE_DEFAULT / + p_sys->i_interpolated_pts += INT64_C(1000000) * + p_dec->fmt_in.video.i_frame_rate_base / p_dec->fmt_in.video.i_frame_rate; } else if( p_dec->p_sys->i_fps_num ) p_sys->i_interpolated_pts += - ( I64C(1000000) * (i_time_ref + i_time_increment - - p_sys->i_last_time - p_sys->i_last_timeincr) * - p_vop->i_rate / INPUT_RATE_DEFAULT / + ( INT64_C(1000000) * (i_time_ref + i_time_increment - + p_sys->i_last_time - p_sys->i_last_timeincr) / p_dec->p_sys->i_fps_num ); p_sys->i_last_time = i_time_ref;