November 2009 - FFmpeg-soc - lists.ffmpeg.org

[PATCH] updated! vf_overlay alpha patch and watermarking using PNG with alpha
by Artur Bodera 15 May '10

15 May '10

For those that have given up on ffmpeg and +libavfilter -vhook debacle. Here's a "just add water" solution to all your trouble: transparent PNG's and watermarks in recent ffmpeg compilations. I'm attaching a working patch that will enable alpha-transparency in overlay filter. This, on the other hand, will let you use overlay filter to superimpose a video clip or transparent png watermark on another video. This has been tested with recent revisions of svn:// svn.ffmpeg.org/soc/libavfilter rev. 5387 and ffmpeg rev. 19868 (16 Sep 2009). Compiled and running under both x86 and x86_64 on linux. Example 1 - insert transparent PNG watermark in bottom left corner of the video: -vfilters "movie=0:png:logo.png [wm];[in][wm] overlay=10:mainH-overlayH-10:1 [out]" Notice the last parameter to overlay ":1" - this enables alpha blending. Example 2 - insert 2 different transparent PNG watermarks (second watermark on bottom right corner): -vfilters "movie=0:png:logo.png [wm];movie=0:png:logo2.png [awm];[in][wm] overlay=10:mainH-overlayH-10:1 [int];[int][awm] overlay=mainW-overlayW-10:mainH-overlayH-10:1 [out]" You could chain and add more overlays this way but the efficiency of such approach is yet to be tested. This should save you a lot of time and you can continue to use your favorite transcoder for web video publishing! With best regards. -- __ /.)\ +48 695 600 936 \(./ abodera(a)gmail.com

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[soc]: r5474 - aac-sbr/aacsbr.c
by alexc 30 Nov '09

30 Nov '09

Author: alexc Date: Mon Nov 30 20:14:48 2009 New Revision: 5474 Log: Return at the end of non-void function sbr_time_freq_grid. Modified: aac-sbr/aacsbr.c Modified: aac-sbr/aacsbr.c ============================================================================== --- aac-sbr/aacsbr.c Mon Nov 30 20:12:11 2009 (r5473) +++ aac-sbr/aacsbr.c Mon Nov 30 20:14:48 2009 (r5474) @@ -902,6 +902,8 @@ static int sbr_time_freq_grid(AACContext sbr->t_q[ch][2] = sbr->t_env[ch][ch_data->bs_num_env[1]]; } else sbr->t_q[ch][1] = sbr->t_env[ch][ch_data->bs_num_env[1]]; + + return 0; } // SBR Envelope and Noise Floor Decoding (14496-3 sp04 p201)

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[soc]: r5473 - aac-sbr/aacsbr.c
by alexc 30 Nov '09

30 Nov '09

Author: alexc Date: Mon Nov 30 20:12:11 2009 New Revision: 5473 Log: Change array_min_int to array_min_int16. Modified: aac-sbr/aacsbr.c Modified: aac-sbr/aacsbr.c ============================================================================== --- aac-sbr/aacsbr.c Sun Nov 29 19:14:47 2009 (r5472) +++ aac-sbr/aacsbr.c Mon Nov 30 20:12:11 2009 (r5473) @@ -124,7 +124,7 @@ static unsigned int sbr_header(SpectralB return get_bits_count(gb) - cnt; } -static int array_min_int(int *array, int nel) +static int array_min_int16(int16_t *array, int nel) { int i, min = array[0]; for (i = 1; i < nel; i++) @@ -295,7 +295,7 @@ static int sbr_make_f_master(AACContext lroundf(sbr->k[1] * powf(sbr->k[2] / (float)sbr->k[1], k / (float)num_bands_1)); } - vdk1_min = array_min_int(vk1 + 1, num_bands_1); + vdk1_min = array_min_int16(vk1 + 1, num_bands_1); if (vdk1_min < vdk0_max) { int change;

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[soc]: r5472 - in libavfilter: checkout.sh diffs/01_ffplay_filters.diff diffs/02_ffmpeg_filters.diff diffs/03_libavfilter_doc.diff
by stefano 29 Nov '09

29 Nov '09

Author: stefano Date: Sun Nov 29 19:14:47 2009 New Revision: 5472 Log: Update to FFmpeg r20660. Modified: libavfilter/checkout.sh libavfilter/diffs/01_ffplay_filters.diff libavfilter/diffs/02_ffmpeg_filters.diff libavfilter/diffs/03_libavfilter_doc.diff Modified: libavfilter/checkout.sh ============================================================================== --- libavfilter/checkout.sh Sat Nov 28 04:28:03 2009 (r5471) +++ libavfilter/checkout.sh Sun Nov 29 19:14:47 2009 (r5472) @@ -1,11 +1,11 @@ #! /bin/sh echo "checking out pristine ffmpeg" -svn checkout svn://svn.ffmpeg.org/ffmpeg/trunk/ ffmpeg -r20520 +svn checkout svn://svn.ffmpeg.org/ffmpeg/trunk/ ffmpeg -r20660 echo "downloading the corresponding version of swscale" cd ffmpeg/libswscale -svn up -r29885 +svn up -r29968 cd ../.. echo "patching ffmpeg" Modified: libavfilter/diffs/01_ffplay_filters.diff ============================================================================== --- libavfilter/diffs/01_ffplay_filters.diff Sat Nov 28 04:28:03 2009 (r5471) +++ libavfilter/diffs/01_ffplay_filters.diff Sun Nov 29 19:14:47 2009 (r5472) @@ -1,6 +1,6 @@ Index: ffplay.c =================================================================== ---- ffplay.c (revision 20520) +--- ffplay.c (revision 20660) +++ ffplay.c (working copy) @@ -30,6 +30,12 @@ #include "libavcodec/colorspace.h" @@ -547,7 +547,7 @@ Index: ffplay.c if (show_status) printf("\n"); SDL_Quit(); -@@ -2487,6 +2788,9 @@ +@@ -2490,6 +2791,9 @@ { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options", "bit_mask" }, { "sync", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" }, { "threads", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" }, @@ -557,7 +557,7 @@ Index: ffplay.c { "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" }, { "loglevel", HAS_ARG | OPT_FUNC2, {(void*)opt_loglevel}, "set libav* logging level", "loglevel" }, { NULL, }, -@@ -2536,7 +2840,9 @@ +@@ -2539,7 +2843,9 @@ avcodec_opts[i]= avcodec_alloc_context2(i); } avformat_opts = avformat_alloc_context(); Modified: libavfilter/diffs/02_ffmpeg_filters.diff ============================================================================== --- libavfilter/diffs/02_ffmpeg_filters.diff Sat Nov 28 04:28:03 2009 (r5471) +++ libavfilter/diffs/02_ffmpeg_filters.diff Sun Nov 29 19:14:47 2009 (r5472) @@ -1,6 +1,6 @@ Index: ffmpeg.c =================================================================== ---- ffmpeg.c (revision 20520) +--- ffmpeg.c (revision 20660) +++ ffmpeg.c (working copy) @@ -41,6 +41,13 @@ #include "libavutil/avstring.h" @@ -399,7 +399,7 @@ Index: ffmpeg.c /* finished ! */ ret = 0; -@@ -3899,6 +4160,9 @@ +@@ -3898,6 +4159,9 @@ { "psnr", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {(void*)&do_psnr}, "calculate PSNR of compressed frames" }, { "vstats", OPT_EXPERT | OPT_VIDEO, {(void*)&opt_vstats}, "dump video coding statistics to file" }, { "vstats_file", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_vstats_file}, "dump video coding statistics to file", "file" }, Modified: libavfilter/diffs/03_libavfilter_doc.diff ============================================================================== --- libavfilter/diffs/03_libavfilter_doc.diff Sat Nov 28 04:28:03 2009 (r5471) +++ libavfilter/diffs/03_libavfilter_doc.diff Sun Nov 29 19:14:47 2009 (r5472) @@ -1,6 +1,6 @@ Index: doc/libavfilter.texi =================================================================== ---- doc/libavfilter.texi (revision 20520) +--- doc/libavfilter.texi (revision 20660) +++ doc/libavfilter.texi (working copy) @@ -111,6 +111,20 @@

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[soc]: r5470 - in aac-sbr: aacsbr.c aacsbr.h
by alexc 28 Nov '09

28 Nov '09

Author: alexc Date: Sat Nov 28 03:31:20 2009 New Revision: 5470 Log: Move bs_amp_res from the SBR context to the SBRData context since it is set per channel in sbr_grid. Modified: aac-sbr/aacsbr.c aac-sbr/aacsbr.h Modified: aac-sbr/aacsbr.c ============================================================================== --- aac-sbr/aacsbr.c Sat Nov 28 03:31:18 2009 (r5469) +++ aac-sbr/aacsbr.c Sat Nov 28 03:31:20 2009 (r5470) @@ -504,13 +504,13 @@ static int sbr_grid(AACContext *ac, Spec int i; ch_data->bs_num_env[0] = ch_data->bs_num_env[1]; - sbr->bs_amp_res = sbr->bs_amp_res_header; + ch_data->bs_amp_res = sbr->bs_amp_res_header; switch (ch_data->bs_frame_class = get_bits(gb, 2)) { case FIXFIX: ch_data->bs_num_env[1] = 1 << get_bits(gb, 2); if (ch_data->bs_num_env[1] == 1) - sbr->bs_amp_res = 0; + ch_data->bs_amp_res = 0; ch_data->bs_freq_res[0] = get_bits1(gb); for (i = 1; i < ch_data->bs_num_env[1]; i++) @@ -609,7 +609,7 @@ static void sbr_envelope(SpectralBandRep if (sbr->bs_coupling && ch) { max_depth = 2; - if (sbr->bs_amp_res) { + if (ch_data->bs_amp_res) { bits = 5; t_huff = vlc_sbr[T_HUFFMAN_ENV_BAL_3_0DB].table; f_huff = vlc_sbr[F_HUFFMAN_ENV_BAL_3_0DB].table; @@ -620,7 +620,7 @@ static void sbr_envelope(SpectralBandRep } } else { max_depth = 3; - if (sbr->bs_amp_res) { + if (ch_data->bs_amp_res) { bits = 6; t_huff = vlc_sbr[T_HUFFMAN_ENV_3_0DB].table; f_huff = vlc_sbr[F_HUFFMAN_ENV_3_0DB].table; @@ -966,10 +966,10 @@ static void sbr_env_noise_floors(Spectra static void sbr_dequant(SpectralBandReplication *sbr, int id_aac, int ch) { int k, l; - float alpha = sbr->bs_amp_res ? 1.0f : 0.5f; + float alpha = sbr->data[ch].bs_amp_res ? 1.0f : 0.5f; if (id_aac == TYPE_CCE && sbr->bs_coupling) { - float pan_offset = sbr->bs_amp_res ? 12.0f : 24.0f; + float pan_offset = sbr->data[ch].bs_amp_res ? 12.0f : 24.0f; for (l = 1; l <= sbr->data[ch].bs_num_env[1]; l++) { for (k = 0; k < sbr->n[sbr->data[ch].bs_freq_res[l + 1]]; k++) { float temp1 = powf(2.0f, sbr->env_facs[0][l][k] * alpha + 7.0f); Modified: aac-sbr/aacsbr.h ============================================================================== --- aac-sbr/aacsbr.h Sat Nov 28 03:31:18 2009 (r5469) +++ aac-sbr/aacsbr.h Sat Nov 28 03:31:20 2009 (r5470) @@ -100,6 +100,7 @@ typedef struct { uint32_t bs_data_env[7][32]; uint32_t bs_data_noise[2][5]; uint8_t bs_add_harmonic[32]; + uint8_t bs_amp_res; } SBRData; /** @@ -109,7 +110,6 @@ typedef struct { uint8_t start; int32_t sample_rate; // SBR header bitstream variables - uint8_t bs_amp_res; uint8_t bs_amp_res_header; SpectrumParameters spectrum_params[2]; // if (bs_header_extra_2)

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[soc]: r5471 - aac-sbr/checkout.sh
by alexc 28 Nov '09

28 Nov '09

Author: alexc Date: Sat Nov 28 04:28:03 2009 New Revision: 5471 Log: Keep ffmpeg and libswscale synchronized Modified: aac-sbr/checkout.sh Modified: aac-sbr/checkout.sh ============================================================================== --- aac-sbr/checkout.sh Sat Nov 28 03:31:20 2009 (r5470) +++ aac-sbr/checkout.sh Sat Nov 28 04:28:03 2009 (r5471) @@ -1,7 +1,8 @@ #!/bin/sh echo "Checking out FFmpeg..." -svn co svn://svn.ffmpeg.org/ffmpeg/trunk ffmpeg -r 20564 +svn co svn://svn.ffmpeg.org/ffmpeg/trunk ffmpeg -r 20564 --ignore-externals +(cd ffmpeg && svn co svn://svn.ffmpeg.org/mplayer/trunk/libswscale libswscale -r 29932) echo "Copying SBR files into FFmpeg tree..." cp aacsbr*.[ch] ffmpeg/libavcodec echo "Applying SBR and build system patch"

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[soc]: r5469 - aac-sbr/aacsbr.c
by alexc 28 Nov '09

28 Nov '09

Author: alexc Date: Sat Nov 28 03:31:18 2009 New Revision: 5469 Log: Prevent a size mismatch when copying from patch_borders to f_tablelim. Modified: aac-sbr/aacsbr.c Modified: aac-sbr/aacsbr.c ============================================================================== --- aac-sbr/aacsbr.c Sat Nov 28 03:31:16 2009 (r5468) +++ aac-sbr/aacsbr.c Sat Nov 28 03:31:18 2009 (r5469) @@ -458,7 +458,7 @@ static int sbr_make_f_derived(AACContext // Limiter Frequency Band Table (14496-3 sp04 p198) if (sbr->bs_limiter_bands > 0) { const float lim_bands_per_octave[3] = {1.2, 2, 3}; - int patch_borders[sbr->num_patches + 1]; + int16_t patch_borders[sbr->num_patches + 1]; patch_borders[0] = sbr->k[3]; for (k=1; k <= sbr->num_patches; k++)

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[soc]: r5468 - aac-sbr/aacsbr.c
by alexc 28 Nov '09

28 Nov '09

Author: alexc Date: Sat Nov 28 03:31:16 2009 New Revision: 5468 Log: Use qsort comparison functions that dereference elements of the appropriate size. Modified: aac-sbr/aacsbr.c Modified: aac-sbr/aacsbr.c ============================================================================== --- aac-sbr/aacsbr.c Sat Nov 28 03:31:15 2009 (r5467) +++ aac-sbr/aacsbr.c Sat Nov 28 03:31:16 2009 (r5468) @@ -133,11 +133,16 @@ static int array_min_int(int *array, int return min; } -static int qsort_comparison_function(const void *a, const void *b) +static int qsort_comparison_function_int(const void *a, const void *b) { return *(const int *)a - *(const int *)b; } +static int qsort_comparison_function_int16(const void *a, const void *b) +{ + return *(const int16_t *)a - *(const int16_t *)b; +} + // Master Frequency Band Table (14496-3 sp04 p194) static int sbr_make_f_master(AACContext *ac, SpectralBandReplication *sbr, SpectrumParameters *spectrum) @@ -184,7 +189,7 @@ static int sbr_make_f_master(AACContext stop_dk[k] = lroundf(stop_min * powf(64.0f / (float)stop_min, (k + 1) / 13.0f)) - lroundf(stop_min * powf(64.0f / (float)stop_min, k / 13.0f)); } - qsort(stop_dk, 13, sizeof(stop_dk[0]), qsort_comparison_function); + qsort(stop_dk, 13, sizeof(stop_dk[0]), qsort_comparison_function_int); for (k = 0; k < spectrum->bs_stop_freq; k++) sbr->k[2] += stop_dk[k]; } else if (spectrum->bs_stop_freq == 14) { @@ -268,7 +273,7 @@ static int sbr_make_f_master(AACContext lroundf(sbr->k[0] * powf(sbr->k[1] / (float)sbr->k[0], k / (float)num_bands_0)); } - qsort(vk0 + 1, num_bands_0, sizeof(vk0[1]), qsort_comparison_function); + qsort(vk0 + 1, num_bands_0, sizeof(vk0[1]), qsort_comparison_function_int16); vdk0_max = vk0[num_bands_0]; vk0[0] = sbr->k[0]; @@ -294,13 +299,13 @@ static int sbr_make_f_master(AACContext if (vdk1_min < vdk0_max) { int change; - qsort(vk1 + 1, num_bands_1, sizeof(vk1[1]), qsort_comparison_function); + qsort(vk1 + 1, num_bands_1, sizeof(vk1[1]), qsort_comparison_function_int16); change = FFMIN(vdk0_max - vk1[1], (vk1[num_bands_1] - vk1[1]) >> 1); vk1[1] += change; vk1[num_bands_1] -= change; } - qsort(vk1 + 1, num_bands_1, sizeof(vk1[1]), qsort_comparison_function); + qsort(vk1 + 1, num_bands_1, sizeof(vk1[1]), qsort_comparison_function_int16); vk1[0] = sbr->k[1]; for (k = 1; k <= num_bands_1; k++) { @@ -462,7 +467,7 @@ static int sbr_make_f_derived(AACContext memcpy( sbr->f_tablelim, sbr->f_tablelow, (sbr->n[0] + 1) * sizeof(sbr->f_tablelow[0])); memcpy(&sbr->f_tablelim[sbr->n[0] + 1], &patch_borders[1], (sbr->num_patches - 1) * sizeof(patch_borders[0])); - qsort(sbr->f_tablelim, sbr->num_patches + sbr->n[0], sizeof(sbr->f_tablelim[0]), qsort_comparison_function); + qsort(sbr->f_tablelim, sbr->num_patches + sbr->n[0], sizeof(sbr->f_tablelim[0]), qsort_comparison_function_int16); k = 1; sbr->n_lim = sbr->n[0] + sbr->num_patches - 1;

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[soc]: r5467 - aac-sbr/aacsbr.c
by alexc 28 Nov '09

28 Nov '09

Author: alexc Date: Sat Nov 28 03:31:15 2009 New Revision: 5467 Log: Copy grid and inverse filtering information from the left channel to the right in the case of SBR coupling. Modified: aac-sbr/aacsbr.c Modified: aac-sbr/aacsbr.c ============================================================================== --- aac-sbr/aacsbr.c Sat Nov 28 03:31:13 2009 (r5466) +++ aac-sbr/aacsbr.c Sat Nov 28 03:31:15 2009 (r5467) @@ -719,9 +719,11 @@ static void sbr_channel_pair_element(AAC if ((sbr->bs_coupling = get_bits1(gb))) { sbr_grid(ac, sbr, gb, &sbr->data[0]); + memcpy(&sbr->data[1], &sbr->data[0], sizeof(sbr->data[1])); sbr_dtdf(sbr, gb, &sbr->data[0]); sbr_dtdf(sbr, gb, &sbr->data[1]); sbr_invf(sbr, gb, &sbr->data[0]); + memcpy(sbr->data[1].bs_invf_mode, sbr->data[0].bs_invf_mode, sizeof(sbr->data[1].bs_invf_mode)); sbr_envelope(sbr, gb, &sbr->data[0], 0); sbr_noise(sbr, gb, &sbr->data[0], 0); sbr_envelope(sbr, gb, &sbr->data[1], 1);

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[soc]: r5466 - in aac-sbr: aacsbr.c aacsbr.h
by alexc 28 Nov '09

28 Nov '09

Author: alexc Date: Sat Nov 28 03:31:13 2009 New Revision: 5466 Log: Fs_SBR as defined by the specification is the SBR internal sample rate and defined to be twice the core coder nominal sample rate. ExtensionSamplingFrequency is the SBR output sample rate. Modified: aac-sbr/aacsbr.c aac-sbr/aacsbr.h Modified: aac-sbr/aacsbr.c ============================================================================== --- aac-sbr/aacsbr.c Fri Nov 27 03:22:19 2009 (r5465) +++ aac-sbr/aacsbr.c Sat Nov 28 03:31:13 2009 (r5466) @@ -148,31 +148,31 @@ static int sbr_make_f_master(AACContext const uint8_t *sbr_offset_ptr; int stop_dk[13]; - if (ac->m4ac.ext_sample_rate < 32000) { + if (sbr->sample_rate < 32000) { temp = 3000; - } else if (ac->m4ac.ext_sample_rate < 64000) { + } else if (sbr->sample_rate < 64000) { temp = 4000; } else temp = 5000; - start_min = (unsigned int)lroundf((temp << 7) / (float)ac->m4ac.ext_sample_rate); - stop_min = (unsigned int)lroundf((temp << 8) / (float)ac->m4ac.ext_sample_rate); + start_min = (unsigned int)lroundf((temp << 7) / (float)sbr->sample_rate); + stop_min = (unsigned int)lroundf((temp << 8) / (float)sbr->sample_rate); - if (ac->m4ac.ext_sample_rate == 16000) { + if (sbr->sample_rate == 16000) { sbr_offset_ptr = sbr_offset[0]; - } else if (ac->m4ac.ext_sample_rate == 22050) { + } else if (sbr->sample_rate == 22050) { sbr_offset_ptr = sbr_offset[1]; - } else if (ac->m4ac.ext_sample_rate == 24000) { + } else if (sbr->sample_rate == 24000) { sbr_offset_ptr = sbr_offset[2]; - } else if (ac->m4ac.ext_sample_rate == 32000) { + } else if (sbr->sample_rate == 32000) { sbr_offset_ptr = sbr_offset[3]; - } else if ((ac->m4ac.ext_sample_rate >= 44100) && - (ac->m4ac.ext_sample_rate <= 64000)) { + } else if ((sbr->sample_rate >= 44100) && + (sbr->sample_rate <= 64000)) { sbr_offset_ptr = sbr_offset[4]; - } else if (ac->m4ac.ext_sample_rate > 64000) { + } else if (sbr->sample_rate > 64000) { sbr_offset_ptr = sbr_offset[5]; } else { - av_log(ac->avccontext, AV_LOG_ERROR, "Unsupported sample rate for SBR: %d\n", ac->m4ac.ext_sample_rate); + av_log(ac->avccontext, AV_LOG_ERROR, "Unsupported sample rate for SBR: %d\n", sbr->sample_rate); return -1; } @@ -328,11 +328,11 @@ static int sbr_make_f_master(AACContext return -1; } // temp == max number of QMF subbands - if (ac->m4ac.ext_sample_rate <= 32000) { + if (sbr->sample_rate <= 32000) { temp = 48; - } else if (ac->m4ac.ext_sample_rate == 44100) { + } else if (sbr->sample_rate == 44100) { temp = 35; - } else if (ac->m4ac.ext_sample_rate >= 48000) + } else if (sbr->sample_rate >= 48000) temp = 32; if (sbr->k[2] - sbr->k[0] > temp) { @@ -349,7 +349,7 @@ static int sbr_hf_calc_npatches(AACConte int i, k, sb = 0; int msb = sbr->k[0]; int usb = sbr->k[3]; - int goal_sb = lroundf((1 << 11) * 1000 / (float)ac->m4ac.sample_rate); + int goal_sb = lroundf((1 << 11) * 1000 / (float)sbr->sample_rate); sbr->num_patches = 0; @@ -804,8 +804,8 @@ int ff_decode_sbr_extension(AACContext * GetBitContext *gb = &gbc; skip_bits_long(gb_host, cnt*8 - 4); - if (!ac->m4ac.ext_sample_rate) - ac->m4ac.ext_sample_rate = 2 * ac->m4ac.sample_rate; + if (!sbr->sample_rate) + sbr->sample_rate = 2 * ac->m4ac.sample_rate; //TODO use the nominal sample rate for arbitrary sample rate support if (crc) { skip_bits(gb, 10); // bs_sbr_crc_bits; FIXME - implement CRC check Modified: aac-sbr/aacsbr.h ============================================================================== --- aac-sbr/aacsbr.h Fri Nov 27 03:22:19 2009 (r5465) +++ aac-sbr/aacsbr.h Sat Nov 28 03:31:13 2009 (r5466) @@ -107,6 +107,7 @@ typedef struct { */ typedef struct { uint8_t start; + int32_t sample_rate; // SBR header bitstream variables uint8_t bs_amp_res; uint8_t bs_amp_res_header;

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