--- /dev/null
+/*****************************************************************************
+ * mp4_lsmash.c: mp4 muxer using L-SMASH
+ *****************************************************************************
+ * Copyright (C) 2003-2013 x264 project
+ *
+ * Authors: Laurent Aimar <fenrir@via.ecp.fr>
+ * Loren Merritt <lorenm@u.washington.edu>
+ * Yusuke Nakamura <muken.the.vfrmaniac@gmail.com>
+ * Takashi Hirata <silverfilain@gmail.com>
+ * golgol7777 <golgol7777@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
+ *
+ * This program is also available under a commercial proprietary license.
+ * For more information, contact us at licensing@x264.com.
+ *****************************************************************************/
+
+#include "output.h"
+#include <lsmash.h>
+
+#define H264_NALU_LENGTH_SIZE 4
+
+/*******************/
+
+#define MP4_LOG_ERROR( ... ) x264_cli_log( "mp4", X264_LOG_ERROR, __VA_ARGS__ )
+#define MP4_LOG_WARNING( ... ) x264_cli_log( "mp4", X264_LOG_WARNING, __VA_ARGS__ )
+#define MP4_LOG_INFO( ... ) x264_cli_log( "mp4", X264_LOG_INFO, __VA_ARGS__ )
+#define MP4_FAIL_IF_ERR( cond, ... ) FAIL_IF_ERR( cond, "mp4", __VA_ARGS__ )
+
+/* For close_file() */
+#define MP4_LOG_IF_ERR( cond, ... )\
+if( cond )\
+{\
+ MP4_LOG_ERROR( __VA_ARGS__ );\
+}
+
+/* For open_file() */
+#define MP4_FAIL_IF_ERR_EX( cond, ... )\
+if( cond )\
+{\
+ remove_mp4_hnd( p_mp4 );\
+ MP4_LOG_ERROR( __VA_ARGS__ );\
+ return -1;\
+}
+
+/*******************/
+
+typedef struct
+{
+ lsmash_root_t *p_root;
+ lsmash_video_summary_t *summary;
+ int b_stdout;
+ uint32_t i_movie_timescale;
+ uint32_t i_video_timescale;
+ uint32_t i_track;
+ uint32_t i_sample_entry;
+ uint64_t i_time_inc;
+ int64_t i_start_offset;
+ uint64_t i_first_cts;
+ uint64_t i_prev_dts;
+ uint32_t i_sei_size;
+ uint8_t *p_sei_buffer;
+ int i_numframe;
+ int64_t i_init_delta;
+ int i_delay_frames;
+ int b_dts_compress;
+ int i_dts_compress_multiplier;
+ int b_use_recovery;
+ int b_fragments;
+} mp4_hnd_t;
+
+/*******************/
+
+static void remove_mp4_hnd( hnd_t handle )
+{
+ mp4_hnd_t *p_mp4 = handle;
+ if( !p_mp4 )
+ return;
+ if( p_mp4->p_sei_buffer )
+ {
+ free( p_mp4->p_sei_buffer );
+ p_mp4->p_sei_buffer = NULL;
+ }
+ if( p_mp4->p_root )
+ {
+ lsmash_destroy_root( p_mp4->p_root );
+ p_mp4->p_root = NULL;
+ }
+ free( p_mp4 );
+}
+
+/*******************/
+
+static int close_file( hnd_t handle, int64_t largest_pts, int64_t second_largest_pts )
+{
+ mp4_hnd_t *p_mp4 = handle;
+
+ if( !p_mp4 )
+ return 0;
+
+ if( p_mp4->p_root )
+ {
+ double actual_duration = 0;
+ if( p_mp4->i_track )
+ {
+ /* Flush the rest of samples and add the last sample_delta. */
+ uint32_t last_delta = largest_pts - second_largest_pts;
+ MP4_LOG_IF_ERR( lsmash_flush_pooled_samples( p_mp4->p_root, p_mp4->i_track, (last_delta ? last_delta : 1) * p_mp4->i_time_inc ),
+ "failed to flush the rest of samples.\n" );
+
+ if( p_mp4->i_movie_timescale != 0 && p_mp4->i_video_timescale != 0 ) /* avoid zero division */
+ actual_duration = ((double)((largest_pts + last_delta) * p_mp4->i_time_inc) / p_mp4->i_video_timescale) * p_mp4->i_movie_timescale;
+ else
+ MP4_LOG_ERROR( "timescale is broken.\n" );
+
+ /*
+ * Declare the explicit time-line mapping.
+ * A segment_duration is given by movie timescale, while a media_time that is the start time of this segment
+ * is given by not the movie timescale but rather the media timescale.
+ * The reason is that ISO media have two time-lines, presentation and media time-line,
+ * and an edit maps the presentation time-line to the media time-line.
+ * According to QuickTime file format specification and the actual playback in QuickTime Player,
+ * if the Edit Box doesn't exist in the track, the ratio of the summation of sample durations and track's duration becomes
+ * the track's media_rate so that the entire media can be used by the track.
+ * So, we add Edit Box here to avoid this implicit media_rate could distort track's presentation timestamps slightly.
+ * Note: Any demuxers should follow the Edit List Box if it exists.
+ */
+ lsmash_edit_t edit;
+ edit.duration = actual_duration;
+ edit.start_time = p_mp4->i_first_cts;
+ edit.rate = ISOM_EDIT_MODE_NORMAL;
+ if( !p_mp4->b_fragments )
+ {
+ MP4_LOG_IF_ERR( lsmash_create_explicit_timeline_map( p_mp4->p_root, p_mp4->i_track, edit ),
+ "failed to set timeline map for video.\n" );
+ }
+ else if( !p_mp4->b_stdout )
+ MP4_LOG_IF_ERR( lsmash_modify_explicit_timeline_map( p_mp4->p_root, p_mp4->i_track, 1, edit ),
+ "failed to update timeline map for video.\n" );
+ }
+
+ MP4_LOG_IF_ERR( lsmash_finish_movie( p_mp4->p_root, NULL ), "failed to finish movie.\n" );
+ }
+
+ remove_mp4_hnd( p_mp4 ); /* including lsmash_destroy_root( p_mp4->p_root ); */
+
+ return 0;
+}
+
+static int open_file( char *psz_filename, hnd_t *p_handle, cli_output_opt_t *opt )
+{
+ *p_handle = NULL;
+
+ int b_regular = strcmp( psz_filename, "-" );
+ b_regular = b_regular && x264_is_regular_file_path( psz_filename );
+ if( b_regular )
+ {
+ FILE *fh = x264_fopen( psz_filename, "wb" );
+ MP4_FAIL_IF_ERR( !fh, "cannot open output file `%s'.\n", psz_filename );
+ b_regular = x264_is_regular_file( fh );
+ fclose( fh );
+ }
+
+ mp4_hnd_t *p_mp4 = calloc( 1, sizeof(mp4_hnd_t) );
+ MP4_FAIL_IF_ERR( !p_mp4, "failed to allocate memory for muxer information.\n" );
+
+ p_mp4->b_dts_compress = opt->use_dts_compress;
+ p_mp4->b_use_recovery = 0; // we don't really support recovery
+ p_mp4->b_fragments = !b_regular;
+ p_mp4->b_stdout = !strcmp( psz_filename, "-" );
+
+ p_mp4->p_root = lsmash_open_movie( psz_filename, p_mp4->b_fragments ? LSMASH_FILE_MODE_WRITE_FRAGMENTED : LSMASH_FILE_MODE_WRITE );
+ MP4_FAIL_IF_ERR_EX( !p_mp4->p_root, "failed to create root.\n" );
+
+ p_mp4->summary = (lsmash_video_summary_t *)lsmash_create_summary( LSMASH_SUMMARY_TYPE_VIDEO );
+ MP4_FAIL_IF_ERR_EX( !p_mp4->summary,
+ "failed to allocate memory for summary information of video.\n" );
+ p_mp4->summary->sample_type = ISOM_CODEC_TYPE_AVC1_VIDEO;
+
+ *p_handle = p_mp4;
+
+ return 0;
+}
+
+static int set_param( hnd_t handle, x264_param_t *p_param )
+{
+ mp4_hnd_t *p_mp4 = handle;
+ uint64_t i_media_timescale;
+
+ p_mp4->i_delay_frames = p_param->i_bframe ? (p_param->i_bframe_pyramid ? 2 : 1) : 0;
+ p_mp4->i_dts_compress_multiplier = p_mp4->b_dts_compress * p_mp4->i_delay_frames + 1;
+
+ i_media_timescale = (uint64_t)p_param->i_timebase_den * p_mp4->i_dts_compress_multiplier;
+ p_mp4->i_time_inc = (uint64_t)p_param->i_timebase_num * p_mp4->i_dts_compress_multiplier;
+ MP4_FAIL_IF_ERR( i_media_timescale > UINT32_MAX, "MP4 media timescale %"PRIu64" exceeds maximum\n", i_media_timescale );
+
+ /* Select brands. */
+ lsmash_brand_type brands[6] = { 0 };
+ uint32_t brand_count = 0;
+ brands[brand_count++] = ISOM_BRAND_TYPE_MP42;
+ brands[brand_count++] = ISOM_BRAND_TYPE_MP41;
+ brands[brand_count++] = ISOM_BRAND_TYPE_ISOM;
+ if( p_mp4->b_use_recovery )
+ {
+ brands[brand_count++] = ISOM_BRAND_TYPE_AVC1; /* sdtp, sgpd, sbgp and visual roll recovery grouping */
+ if( p_param->b_open_gop )
+ brands[brand_count++] = ISOM_BRAND_TYPE_ISO6; /* cslg and visual random access grouping */
+ }
+
+ /* Set movie parameters. */
+ lsmash_movie_parameters_t movie_param;
+ lsmash_initialize_movie_parameters( &movie_param );
+ movie_param.major_brand = ISOM_BRAND_TYPE_MP42;
+ movie_param.brands = brands;
+ movie_param.number_of_brands = brand_count;
+ MP4_FAIL_IF_ERR( lsmash_set_movie_parameters( p_mp4->p_root, &movie_param ),
+ "failed to set movie parameters.\n" );
+ p_mp4->i_movie_timescale = lsmash_get_movie_timescale( p_mp4->p_root );
+ MP4_FAIL_IF_ERR( !p_mp4->i_movie_timescale, "movie timescale is broken.\n" );
+
+ /* Create a video track. */
+ p_mp4->i_track = lsmash_create_track( p_mp4->p_root, ISOM_MEDIA_HANDLER_TYPE_VIDEO_TRACK );
+ MP4_FAIL_IF_ERR( !p_mp4->i_track, "failed to create a video track.\n" );
+
+ p_mp4->summary->width = p_param->i_width;
+ p_mp4->summary->height = p_param->i_height;
+ uint32_t i_display_width = p_param->i_width << 16;
+ uint32_t i_display_height = p_param->i_height << 16;
+ if( p_param->vui.i_sar_width && p_param->vui.i_sar_height )
+ {
+ double sar = (double)p_param->vui.i_sar_width / p_param->vui.i_sar_height;
+ if( sar > 1.0 )
+ i_display_width *= sar;
+ else
+ i_display_height /= sar;
+ p_mp4->summary->par_h = p_param->vui.i_sar_width;
+ p_mp4->summary->par_v = p_param->vui.i_sar_height;
+ }
+ p_mp4->summary->color.primaries_index = p_param->vui.i_colorprim;
+ p_mp4->summary->color.transfer_index = p_param->vui.i_transfer;
+ p_mp4->summary->color.matrix_index = p_param->vui.i_colmatrix >= 0 ? p_param->vui.i_colmatrix : ISOM_MATRIX_INDEX_UNSPECIFIED;
+ p_mp4->summary->color.full_range = p_param->vui.b_fullrange >= 0 ? p_param->vui.b_fullrange : 0;
+
+ /* Set video track parameters. */
+ lsmash_track_parameters_t track_param;
+ lsmash_initialize_track_parameters( &track_param );
+ lsmash_track_mode track_mode = ISOM_TRACK_ENABLED | ISOM_TRACK_IN_MOVIE | ISOM_TRACK_IN_PREVIEW;
+ track_param.mode = track_mode;
+ track_param.display_width = i_display_width;
+ track_param.display_height = i_display_height;
+ MP4_FAIL_IF_ERR( lsmash_set_track_parameters( p_mp4->p_root, p_mp4->i_track, &track_param ),
+ "failed to set track parameters for video.\n" );
+
+ /* Set video media parameters. */
+ lsmash_media_parameters_t media_param;
+ lsmash_initialize_media_parameters( &media_param );
+ media_param.timescale = i_media_timescale;
+ media_param.media_handler_name = "L-SMASH Video Media Handler";
+ if( p_mp4->b_use_recovery )
+ {
+ media_param.roll_grouping = p_param->b_intra_refresh;
+ media_param.rap_grouping = p_param->b_open_gop;
+ }
+ MP4_FAIL_IF_ERR( lsmash_set_media_parameters( p_mp4->p_root, p_mp4->i_track, &media_param ),
+ "failed to set media parameters for video.\n" );
+ p_mp4->i_video_timescale = lsmash_get_media_timescale( p_mp4->p_root, p_mp4->i_track );
+ MP4_FAIL_IF_ERR( !p_mp4->i_video_timescale, "media timescale for video is broken.\n" );
+
+ return 0;
+}
+
+static int write_headers( hnd_t handle, x264_nal_t *p_nal )
+{
+ mp4_hnd_t *p_mp4 = handle;
+
+ uint32_t sps_size = p_nal[0].i_payload - H264_NALU_LENGTH_SIZE;
+ uint32_t pps_size = p_nal[1].i_payload - H264_NALU_LENGTH_SIZE;
+ uint32_t sei_size = p_nal[2].i_payload;
+
+ uint8_t *sps = p_nal[0].p_payload + H264_NALU_LENGTH_SIZE;
+ uint8_t *pps = p_nal[1].p_payload + H264_NALU_LENGTH_SIZE;
+ uint8_t *sei = p_nal[2].p_payload;
+
+ lsmash_codec_specific_t *cs = lsmash_create_codec_specific_data( LSMASH_CODEC_SPECIFIC_DATA_TYPE_ISOM_VIDEO_H264,
+ LSMASH_CODEC_SPECIFIC_FORMAT_STRUCTURED );
+
+ lsmash_h264_specific_parameters_t *param = (lsmash_h264_specific_parameters_t *)cs->data.structured;
+ param->lengthSizeMinusOne = H264_NALU_LENGTH_SIZE - 1;
+
+ /* SPS
+ * The remaining parameters are automatically set by SPS. */
+ if( lsmash_append_h264_parameter_set( param, H264_PARAMETER_SET_TYPE_SPS, sps, sps_size ) )
+ {
+ MP4_LOG_ERROR( "failed to append SPS.\n" );
+ return -1;
+ }
+
+ /* PPS */
+ if( lsmash_append_h264_parameter_set( param, H264_PARAMETER_SET_TYPE_PPS, pps, pps_size ) )
+ {
+ MP4_LOG_ERROR( "failed to append PPS.\n" );
+ return -1;
+ }
+
+ if( lsmash_add_codec_specific_data( (lsmash_summary_t *)p_mp4->summary, cs ) )
+ {
+ MP4_LOG_ERROR( "failed to add H.264 specific info.\n" );
+ return -1;
+ }
+
+ lsmash_destroy_codec_specific_data( cs );
+
+ /* Additional extensions */
+ /* Bitrate info */
+ cs = lsmash_create_codec_specific_data( LSMASH_CODEC_SPECIFIC_DATA_TYPE_ISOM_VIDEO_H264_BITRATE,
+ LSMASH_CODEC_SPECIFIC_FORMAT_STRUCTURED );
+ if( cs )
+ lsmash_add_codec_specific_data( (lsmash_summary_t *)p_mp4->summary, cs );
+ lsmash_destroy_codec_specific_data( cs );
+
+ p_mp4->i_sample_entry = lsmash_add_sample_entry( p_mp4->p_root, p_mp4->i_track, p_mp4->summary );
+ MP4_FAIL_IF_ERR( !p_mp4->i_sample_entry,
+ "failed to add sample entry for video.\n" );
+
+ /* SEI */
+ p_mp4->p_sei_buffer = malloc( sei_size );
+ MP4_FAIL_IF_ERR( !p_mp4->p_sei_buffer,
+ "failed to allocate sei transition buffer.\n" );
+ memcpy( p_mp4->p_sei_buffer, sei, sei_size );
+ p_mp4->i_sei_size = sei_size;
+
+ return sei_size + sps_size + pps_size;
+}
+
+static int write_frame( hnd_t handle, uint8_t *p_nalu, int i_size, x264_picture_t *p_picture )
+{
+ mp4_hnd_t *p_mp4 = handle;
+ uint64_t dts, cts;
+
+ if( !p_mp4->i_numframe )
+ {
+ p_mp4->i_start_offset = p_picture->i_dts * -1;
+ p_mp4->i_first_cts = p_mp4->b_dts_compress ? 0 : p_mp4->i_start_offset * p_mp4->i_time_inc;
+ if( p_mp4->b_fragments )
+ {
+ lsmash_edit_t edit;
+ edit.duration = ISOM_EDIT_DURATION_UNKNOWN32; /* QuickTime doesn't support 64bit duration. */
+ edit.start_time = p_mp4->i_first_cts;
+ edit.rate = ISOM_EDIT_MODE_NORMAL;
+ MP4_LOG_IF_ERR( lsmash_create_explicit_timeline_map( p_mp4->p_root, p_mp4->i_track, edit ),
+ "failed to set timeline map for video.\n" );
+ }
+ }
+
+ lsmash_sample_t *p_sample = lsmash_create_sample( i_size + p_mp4->i_sei_size );
+ MP4_FAIL_IF_ERR( !p_sample,
+ "failed to create a video sample data.\n" );
+
+ if( p_mp4->p_sei_buffer )
+ {
+ memcpy( p_sample->data, p_mp4->p_sei_buffer, p_mp4->i_sei_size );
+ free( p_mp4->p_sei_buffer );
+ p_mp4->p_sei_buffer = NULL;
+ }
+
+ memcpy( p_sample->data + p_mp4->i_sei_size, p_nalu, i_size );
+ p_mp4->i_sei_size = 0;
+
+ if( p_mp4->b_dts_compress )
+ {
+ if( p_mp4->i_numframe == 1 )
+ p_mp4->i_init_delta = (p_picture->i_dts + p_mp4->i_start_offset) * p_mp4->i_time_inc;
+ dts = p_mp4->i_numframe > p_mp4->i_delay_frames
+ ? p_picture->i_dts * p_mp4->i_time_inc
+ : p_mp4->i_numframe * (p_mp4->i_init_delta / p_mp4->i_dts_compress_multiplier);
+ cts = p_picture->i_pts * p_mp4->i_time_inc;
+ }
+ else
+ {
+ dts = (p_picture->i_dts + p_mp4->i_start_offset) * p_mp4->i_time_inc;
+ cts = (p_picture->i_pts + p_mp4->i_start_offset) * p_mp4->i_time_inc;
+ }
+
+ p_sample->dts = dts;
+ p_sample->cts = cts;
+ p_sample->index = p_mp4->i_sample_entry;
+ p_sample->prop.ra_flags = p_picture->b_keyframe ? ISOM_SAMPLE_RANDOM_ACCESS_FLAG_SYNC : ISOM_SAMPLE_RANDOM_ACCESS_FLAG_NONE;
+
+ if( p_mp4->b_fragments && p_mp4->i_numframe && p_sample->prop.ra_flags != ISOM_SAMPLE_RANDOM_ACCESS_FLAG_NONE )
+ {
+ MP4_FAIL_IF_ERR( lsmash_flush_pooled_samples( p_mp4->p_root, p_mp4->i_track, p_sample->dts - p_mp4->i_prev_dts ),
+ "failed to flush the rest of samples.\n" );
+ MP4_FAIL_IF_ERR( lsmash_create_fragment_movie( p_mp4->p_root ),
+ "failed to create a movie fragment.\n" );
+ }
+
+ /* Append data per sample. */
+ MP4_FAIL_IF_ERR( lsmash_append_sample( p_mp4->p_root, p_mp4->i_track, p_sample ),
+ "failed to append a video frame.\n" );
+
+ p_mp4->i_prev_dts = dts;
+ p_mp4->i_numframe++;
+
+ return i_size;
+}
+
+const cli_output_t mp4_output = { open_file, set_param, write_headers, write_frame, close_file };
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